View MAX2651_5781856.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

general description the MAX2651/max2652/max2653 silicon germanium (sige), low-noise amplifiers (lnas) are intended for use in gsm900, dcs1800, and pcs1900 band wireless handsets. the MAX2651/max2652 consist of two lnas, one optimized for the gsm900 band and the other opti- mized for the dcs1800/pcs1900 bands. they feature a band-select pin to switch between the two lnas, as well as a gain-step input to reduce the gain of each lna by 20db and reduce supply current. the max2652 is func- tionally equivalent to the MAX2651, but features a low- power shutdown mode. the max2653 consists of a single lna optimized for the dcs1800 and pcs1900 bands, and has a shutdown feature and a 20db gain step. the max2652 and max2653 together form an ideal solution for triple-band phone applications (gsm, dcs, and pcs bands). the MAX2651/max2652/max2653 are fabricated using an advanced high-frequency sige bipolar process. as a result, all devices provide low noise figure, high gain, and high input third-order intercept point (ip3) perfor- mance at the gsm, dcs, and pcs bands. a pull-up resistor to v cc at each lna output allows for gain adjustability. a minimal number of external components are needed for input and output matching, helping to reduce board space. the MAX2651/max2652 are packaged in a 10-pin ?ax, while the max2653 is packaged in an 8-pin ?ax. all devices operate from a single +2.7v to +3.3v supply. applications gsm900/dcs1800 dual-band phones gsm900/dcs1800/pcs1900 triple-band phones dcs1800 or pcs1900 single-mode phones is-136 tdma dual-band phones features wide operating frequency range 800mhz to 1000mhz (MAX2651/52) 1800mhz to 2000mhz (MAX2651/52/53) excellent low-noise performance 1.2db/1.3db over gsm receive band (MAX2651/52) 1.8db/1.8db/1.7db over dcs receive band (MAX2651/52/53) high gain 18db over gsm receive band (MAX2651/52) 18db/17.5db/18.5db over dcs receive band (MAX2651/52/53) 20db gain reduction in low-gain mode externally adjustable gain +2.7v to +3.3v single-supply operation low supply current 5.4ma to 7.0ma in high-gain mode 2.2ma in low-gain mode 0.25? shutdown current (max2652/53) MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers ________________________________________________________________ maxim integrated products 1 19-1506; rev 2; 8/03 part MAX2651 eub max2652 eub -40? to +85? -40? to +85? temp range pin-package 10 ?ax 10 ?ax pin configurations/functional diagrams ordering information 10 9 8 7 6 1 2 3 4 5 shdn (gnd) gain gsmout v cc dcsout gnd gnd dcsin band gsmin dc bias control MAX2651 max2652 high low low high 8 7 6 5 1 2 3 4 shdn gain v cc dcsout gnd dcsin gnd gnd high low max2653 dc bias control max2653 eua -40? to +85? 8 ?ax ( ) are for MAX2651. for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com.
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers 2 _______________________________________________________________________________________ absolute maximum ratings dc electrical characteristics?ax2651 (v cc = +2.7v to +3.3v, band = gain = v cc , no input signal, all input/output ports terminated in 50 ? , t a = -40? to +85?, unless otherwise noted. typical values are at v cc = +3v, t a = +25?.) (note 1) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. v cc to gnd ..............................................................-0.3v to +6v shdn , gain, band to gnd......................-0.3v to (v cc + 0.3v) gsmin, dcsin ..........................................1.0v peak (+10dbm) input current (all digital inputs) .......................................?0ma continuous power dissipation 8-pin ?ax (derate 4.5mw/? above +70?)..............362mw 10-pin ?ax (derate 5.6mw/? above +70?) ............444mw operating temperature range ...........................-40? to +85? junction temperature ......................................................+150? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) .................................+300? dcs band, low-gain mode (band = v cc , gain = gnd) dcs band, high-gain mode (band = gain = v cc ) v in = gnd v in = v cc gsm band, high-gain mode (band = gnd, gain = v cc ) gsm band, low-gain mode (band = gnd, gain = v cc ) conditions 2.2 3.3 5.7 8.7 i cc v 2.7 3.3 v cc input voltage range input supply current ? -1.5 i il input logic low current ? 1.5 i ih input logic high current 5.9 9.6 2.2 3.6 v 1.5 v ih input logic threshold high v 0.5 v il input logic threshold low units min typ max symbol parameter ma dcs band, low-gain mode (band = v cc , gain = gnd) dcs band, high-gain mode (band = gain = v cc ) gsm band, high-gain mode (band = gnd, gain = v cc ) gsm band, low-gain mode (band = gnd, gain = v cc ) conditions ma 2.3 3.6 7.0 11.0 i cc v 2.7 3.3 v cc input voltage range input supply current 7.2 11.0 2.4 3.7 units min typ max symbol parameter dc electrical characteristics?ax2652 (v cc = +2.7v to +3.3v, band = gain = v cc , no input signal, all input/output ports terminated in 50 ? , t a = -40? to +85?, unless otherwise noted. typical values are at v cc = +3v, t a = +25?.) (note 1) shdn = gnd ? 0.25 shutdown supply current caution! esd sensitive device
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers _______________________________________________________________________________________ 3 dc electrical characteristics?ax2653 (v cc = +2.7v to +3.3v, shdn = gain = v cc , no input signal, all input/output ports terminated in 50 ? , t a = -40? to +85?, unless otherwise noted. typical values are at v cc = +3v, t a = +25?.) (note 1) dcs band, low-gain mode (gain = gnd) dcs band, high-gain mode (gain = v cc ) v in = v cc v in = gnd conditions 2.2 3.2 ma 5.4 8.5 i cc v 1.5 v ih input logic threshold high input supply current v 1.5 v ih input logic threshold high v 0.5 v il input logic threshold low ? 3 i ih input logic high current ? -1.5 i il input logic low current units min typ max symbol parameter note 1: devices are production tested at t a = +25?. minimum and maximum limits are guaranteed by design and characterization. shdn = gnd ? 0.25 i shdn shutdown supply current ac electrical characteristics?ax2651 (MAX2651 ev kit, f in = 945mhz (gsm band), f in = 1850mhz (dcs band), p in = -30dbm, input and output matching networks are optimized for the frequency band of interest, all input/output ports terminated in 50 ? , v cc = +3v, t a = +25?, unless otherwise noted.) (note 2) symbol parameter g nf db db mhz gsm band, low-gain mode (band = gain = gnd) t a = -40? to +85? gsm band, high-gain mode (band = gnd, gain = v cc ) dcs band, high-gain mode (band = gain = v cc ) gsm band (band = gnd) dcs band (band = v cc ) gsm band, low-gain mode (band = gain = gnd) gsm band, high-gain mode (band = gnd, gain = v cc ) dcs band, low-gain mode (band = v cc , gain = gnd) dcs band, low-gain mode (band = v cc , gain = gnd) dcs band, high-gain mode (band = gain = v cc ) conditions 16.5 18 19.5 power gain (note 4) 925 960 1805 1880 f in input frequency range (note 3) 5.3 6.7 1.2 1.4 5.5 6.0 -3.5 -2 -0.5 16.5 18 19.5 -3.5 -2 -0.5 1.8 2.05 noise figure (note 4) units min typ max t a = +25? t a = +25? t a = +25? t a = +25? t a = -40? to +85? t a = -40? to +85? t a = -40? to +85? 16 20 -4 0 16 20 -4 0 v 2.7 3.3 v cc input voltage range v in = gnd ? -1.5 i il input logic low current v in = v cc ? 1.5 i ih input logic high current v 0.5 v il input logic threshold low
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers 4 _______________________________________________________________________________________ ac electrical characteristics?ax2651 (continued) (MAX2651 ev kit, f in = 945mhz (gsm band), f in = 1850mhz (dcs band), p in = -30dbm, input and output matching networks are optimized for the frequency band of interest, all input/output ports terminated in 50 ? , v cc = +3v, t a = +25?, unless otherwise noted.) (note 2) gsm band, high-gain mode (band = gnd, gain = v cc ) dcs band, low-gain mode (band = v cc , gain = gnd) dcs band, high-gain mode (band = gain = v cc ) gsm band, low-gain mode (band = gain = gnd) gsm band, high-gain mode (band = gnd, gain = v cc ) dcs band, low-gain mode (band = v cc , gain = gnd) dcs band, high-gain mode (band = gain = v cc ) reverse isolation -19 -15 -12 -10 db -14 -10 ? s 22 ? 2 output return loss -20 -15 -11 -8.5 -14 -12 db -11 -8.5 ? s 11 ? 2 input return loss gsm band, low-gain mode (band = gain = gnd) gsm band, high-gain mode (band = gnd, gain = v cc ) dcs band, low-gain mode (band = v cc , gain = gnd) dcs band, high-gain mode (band = gain = v cc ) gsm band, low-gain mode (band = gain = gnd) -22 -20 -39 -35 -20 -18 db -32 -29 ? s 12 ? 2 -20 -15 gsm band, low-gain mode (band = gnd, gain = gnd) gsm band, high-gain mode (band = gnd, gain = v cc ) (note 5) dcs band, low-gain mode (band = v cc , gain = gnd) -10.5 -8.5 -20 -18 -9.5 -8 dbm ip -1db input 1db compression point dbm -11.5 -10 iip3 input third-order intercept point dcs band, high-gain mode (band = gain = v cc ) dcs band, high-gain mode (band = gain = v cc ) -1.5 0.5 dcs band, low-gain mode (band = v cc , gain = gnd) (note 6) -10.5 -8.5 -2.5 0.5 gsm band, high-gain mode (band = gnd, gain = v cc ) gsm band, low-gain mode (band = gnd, gain = gnd) conditions units min typ max symbol parameter -20 -18
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers _______________________________________________________________________________________ 5 ac electrical characteristics?ax2652 (max2652 ev kit, f in = 945mhz (gsm band), f in = 1850mhz (dcs band), p in = -30dbm, input and output matching networks are optimized for the frequency band of interest, all input/output ports terminated in 50 ? , v cc = +3v, t a = +25?, unless otherwise noted.) (note 2) 1805 1880 925 960 16 17.5 19 15.5 19.5 -3.5 -2 -0.5 -4 0 16.5 18 19.5 16 20 -4.0 -2 -0.5 1.3 1.5 1.8 2.0 5.8 6.3 5.5 6.7 -10 -8.5 iip3 input third-order intercept point ip -1db input 1db compression point (note 6) (note 5) symbol t a = -40? to +85? dcs band, high-gain mode (band = gain = v cc ) gsm band, high-gain mode (band = gnd, gain = v cc ) dcs band, high-gain mode (band = gain = v cc ) dcs band, high-gain mode (band = gain = v cc ) f in g dcs band, low-gain mode (band = v cc , gain = gnd) -18 -16.5 gsm band (band = gnd) gsm band, low-gain mode (band = gnd, gain = gnd) gsm band, high-gain mode (band = gnd, gain = v cc ) dcs band, low-gain mode (band = v cc , gain = gnd) -18 -16.5 -10.5 -8 -8.5 -7 0 1.5 dcs band, low-gain mode (band = v cc , gain = gnd) -9 -7.5 0.5 2.5 gsm band, high-gain mode (band = gnd, gain = v cc ) gsm band, low-gain mode (band = gnd, gain = gnd) dcs band (band = v cc ) gsm band, low-gain mode (band = gain = gnd) dcs band, low-gain mode (band = v cc , gain = gnd) gsm band, high-gain mode (band = gnd, gain = v cc ) gsm band, low-gain mode (band = gain = gnd) conditions power gain (note 4) input frequency range (note 3) nf noise figure (note 4) min typ max t a = +25? t a = +25? t a = +25? t a = +25? t a = -40? to +85? t a = -40? to +85? t a = -40? to +85? parameter dcs band, high-gain mode (band = gain = v cc ) -4.5 0 mhz dbm dbm db db units
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers 6 _______________________________________________________________________________________ ac electrical characteristics?ax2652 (continued) (max2652 ev kit, f in = 945mhz (gsm band), f in = 1850mhz (dcs band), p in = -30dbm, input and output matching networks are optimized for the frequency band of interest, all input/output ports terminated in 50 ? , v cc = +3v, t a = +25?, unless otherwise noted.) (note 2) input return loss reverse isolation ? s 12 ? 2 gsm band, high-gain mode (band = gnd, gain = v cc ) dcs band, low-gain mode (band = v cc , gain = gnd) dcs band, high-gain mode (band = gain = v cc ) gsm band, high-gain mode (band = gnd, gain = v cc ) dcs band, low-gain mode (band = v cc , gain = gnd) dcs band, high-gain mode (band = gain = v cc ) gsm band, low-gain mode (band = gain = gnd) gsm band, high-gain mode (band = gnd, gain = v cc ) dcs band, low-gain mode (band = v cc , gain = gnd) dcs band, high-gain mode (band = gain = v cc ) conditions symbol parameter gsm band, low-gain mode (band = gain = gnd) ? s 11 ? 2 ? s 22 ? 2 output return loss gsm band, low-gain mode (band = gain = gnd) db db db unit min typ max -12 -9.5 -12 -9.5 -11 -9.5 -20 -15 -11 -9.5 -17 -13 -12.5 -11 -15 -13 -29 -26 -19 -17 -37 -34 -23 -20
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers _______________________________________________________________________________________ 7 ac electrical characteristics?ax2653 (max2653 ev kit, f in = 1850mhz (dcs band), f in = 1960mhz (pcs band), p in = -30dbm, input and output matching networks are optimized for the frequency band of interest, all input/output ports terminated in 50 ? , v cc = +3v, t a = +25?, unless otherwise noted.) (note 2) note 2: minimum and maximum limits are guaranteed by design and characterization, but not production tested. note 3: the part has been fully characterized at the specified frequency range. operation outside of this range is possible but not guaranteed. note 4: specification excludes circuit board losses. note 5: measured with two tones, f in1 = 1850mhz, f in2 = 1850.8mhz, p in = -33dbm for each tone. note 6: measured with two tones, f in1 = 945mhz, f in2 = 945.8mhz, p in = -33dbm for each tone. note 7: measured with two tones, f in1 = 1960mhz, f in2 = 1960.8mhz, p in = -33dbm for each tone. pcs band dcs band pcs band dcs band 1.8 2.05 -4 0 16 20 1930 1990 -21 -18 -33 -29 pcs band dcs band pcs band dcs band dcs and pcs band, low-gain mode (band = v cc , gain = gnd) high-gain mode (band = gain = v cc ) reverse isolation ? s 12 ? 2 -35 -31 db -21 -18 low-gain mode (band = v cc , gain = gnd) dcs and pcs band, high-gain mode (band = gain = v cc ) output return loss ? s 22 ? 2 -12 -9.5 db -15 -12 dcs and pcs band, low-gain mode (band = v cc , gain = gnd) dcs and pcs band, high-gain mode (band = gain = v cc ) input return loss ? s 11 ? 2 -11 -8.5 db -11 -9.5 dcs and pcs band, low-gain mode (band = v cc , gain = gnd) -1 +1.5 dcs and pcs band, high-gain mode (band = gain = v cc ) parameter symbol min typ max units noise figure (note 4) nf 1.7 1.9 -4 -2.5 -1 17 18.5 20 5.3 6.7 db input third-order intercept point (notes 5, 7) iip3 -10.5 -8.5 dbm input frequency range (note 3) f in 1805 1880 mhz power gain (note 4) g db input 1db compression point ip -1db -20 -18 db -9 -7 conditions high-gain mode (band = gain = v cc ) dcs and pcs band, low-gain mode (band = v cc , gain = gnd) dcs and pcs band, high-gain mode (band = gain = v cc ) dcs and pcs band, low-gain mode (band = v cc , gain = gnd) dcs and pcs band, low-gain mode (band = v cc , gain = gnd) dcs and pcs band, high-gain mode (band = v cc , gain = gnd) band = v cc t a = +25? t a = +25? t a = -40? to +85? t a = -40? to +85?
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers 8 _______________________________________________________________________________________ typical operating characteristics (MAX2651 ev kit, v cc = +3.0v, input and output matched with recommended matching networks, t a = +25?, unless otherwise noted.) high gain low gain f in = 945mhz p in (dbm) 12 10 -9 -11 14 -7 16 -5 18 -3 20 -1 -25 -20 -15 -10 -5 0 power gain vs. input power ma\x2651-01 power gain (db) low gain (db) -20 -10 0 10 20 800 840 880 920 960 1000 power gain vs. frequency ma\x2651-02 frequency (mhz) gain (db) high gain low gain 800 840 880 920 960 1000 input return loss vs. frequency ma\x2651-03 frequency (mhz) s 11 2 (db) high gain low gain -25 -20 -10 -15 -5 0 800 840 880 920 960 1000 output return loss vs. frequency ma\x2651-04 frequency (mhz) s 22 2 (db) high gain -25 -20 -10 -15 -5 0 low gain 800 840 880 920 960 1000 reverse isolation vs. frequency ma\x2651-05 frequency (mhz) s 12 2 (db) -40 -20 -30 -10 0 low gain high gain 4 5 6 7 8 supply current vs. v cc high gain MAX2651-06 v cc (v) i cc (ma) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 no input signal t a = +25? t a = -40? t a = +85? 1.0 1.5 2.0 2.5 3.0 supply current vs. v cc low gain MAX2651-07 v cc (v) i cc (ma) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 no input signal t a = +25 c t a = -40 c t a = +85 c MAX2651 (gsm band)
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers _______________________________________________________________________________________ 9 typical operating characteristics (continued) (MAX2651 ev kit, v cc = +3.0v, input and output matched with recommended matching networks, t a = +25?, unless otherwise noted.) high gain low gain f = 1840mhz p in (dbm) 11 9 -8 -10 13 -6 15 -4 17 -2 19 0 -25 -20 -15 -10 -5 0 power gain vs. input power ma\x2651-08 power gain (db) low gain (db) -20 -10 0 10 20 1800 1840 1880 1920 1960 2000 power gain vs. frequency ma\x2651-09 frequency (mhz) ? s 21 ? 2 (db) high gain low gain high gain low gain 1800 1840 1880 1920 1960 2000 input return loss vs. frequency ma\x2651-10 frequency (mhz) ? s 11 ? 2 (db) -20 -10 0 1800 1840 1880 1920 1960 2000 output return loss vs. frequency ma\x2651-11 frequency (mhz) ? s 22 ? 2 (db) -20 -10 0 high gain low gain 1800 1840 1880 1920 1960 2000 reverse isolation vs. frequency ma\x2651-12 frequency (mhz) ? s 12 ? 2 (db) high gain low gain -40 -30 -20 -10 0 4 5 6 7 8 supply current vs. v cc high gain MAX2651-13 v cc (v) i cc (ma) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 no input signal t a = +85 c t a = -40 c t a = +25 c 1.0 1.5 2.0 2.5 3.0 supply current vs. v cc low gain MAX2651-14 v cc (v) i cc (ma) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 no input signal t a = +25 c t a = -40 c t a = +85 c MAX2651 (dcs band)
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers 10 ______________________________________________________________________________________ high gain low gain f = 945mhz p in (dbm) 12 10 8 -10 -12 -14 14 -8 16 -6 18 -4 20 -2 -25 -20 -15 -10 -5 0 power gain vs. input power ma\x2652-01 high gain (db) low gain (db) 5.0 6.0 7.0 8.0 5.5 6.5 7.5 8.5 9.0 high-gain mode supply current vs. supply voltage max2652-toc02 supply voltage (v) i cc (ma) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 no input signal t a = -40 c t a = +25 c t a = +85 c 1.5 1.0 2.0 2.5 3.0 3.5 low-gain mode supply current vs. supply voltage max2652 toc03 supply voltage (v) i cc (ma) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 no input signal t a = +25 c t a = -40 c t a = +85 c -3 -5 -7 -9 -11 -1 1 3 5 input ip3 vs. supply voltage max2652 toc03a supply voltage (v) input ip3 (dbm) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 low gain high gain t a = +25 c t a = +25 c t a = -40 c t a = +85 c t a = -40 c t a = +85 c -14 -16 -18 -20 -12 -10 -8 -6 input p1db vs. supply voltage max2652 toc03b supply voltage (v) input p1db (dbm) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 low gain high gain t a = +25 c t a = -40 c t a = -40 c t a = +85 c t a = +85 c t a = +25 c -20 -10 0 10 20 800 840 880 920 960 1000 power gain vs. frequency ma\x2652-toca frequency (mhz) gain (db) high gain low gain 800 840 880 920 960 1000 output return loss vs. frequency ma\x2652-tocc frequency (mhz) s 22 2 (db) -50 -40 -20 -30 -10 0 high gain low gain 800 840 880 920 960 1000 input return loss vs. frequency ma\x2652-tocb frequency (mhz) s 11 2 (db) low gain -50 -40 -20 -30 -10 0 high gain 800 840 880 920 960 1000 reverse isolation vs. frequency ma\x2652-tocd frequency ( mhz ) s 12 2 (db) -40 -50 -20 -30 -10 0 low gain high gain typical operating characteristics (continued) (max2652 ev kit, v cc = +3.0v, input and output matched with recommended matching networks, t a = +25?, unless otherwise noted.) max2652 (gsm band)
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers ______________________________________________________________________________________ 11 high gain low gain f = 945mhz p in (dbm) 12 10 8 -8 -10 -12 14 -6 16 -4 18 -2 20 0 -25 -20 -15 -10 -5 0 power gain vs. input power ma\x2652-toc04 high gain (db) low gain (db) -20 -10 0 10 20 1800 1840 1880 1920 1960 2000 power gain vs. frequency ma\x2652 toc05 frequency (mhz) gain (db) high gain low gain -40 -50 -30 -20 -10 0 1800 1840 1880 1920 frequency (mhz) 1960 2000 input return loss vs. frequency ma\x2652 toc06 s 11 2 (db) low gain high gain -40 -50 -30 -20 -10 0 1800 1840 1880 1920 1960 2000 output return loss vs. frequency ma\x2652 toc07 high gain low gain frequency (mhz) s 22 2 (db) -40 -50 -30 -20 -10 0 1800 1840 1880 1920 1960 2000 reverse isolation vs. frequency ma\x2652 toc08 high gain low gain frequency (mhz) s 12 2 (db) 5.0 6.0 7.0 8.0 5.5 6.5 7.5 8.5 9.0 high-gain supply current vs. supply voltage max2652-toc09 supply voltage (v) i cc (ma) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 no input signal t a = -40 c t a = +25 c t a = +85 c 1.5 1.0 2.0 2.5 3.0 low-gain supply current vs. supply voltage max2652 toc10 supply voltage (v) i cc (ma) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 no input signal t a = +25 c t a = -40 c t a = +85 c -4 -6 -8 -10 -2 0 2 4 input ip3 vs. supply voltage max2652 toc10a supply voltage (v) input ip3 (dbm) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 low gain high gain t a = +25 c t a = -40 c t a = -40 c t a = +85 c t a = +85 c t a = +25 c -16 -18 -14 -8 -6 -4 input p1db vs. supply voltage max2652 toc10b supply voltage (v) input 1db (dbm) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 low gain high gain t a = +25 c t a = -40 c t a = -40 c t a = +85 c t a = +85 c t a = +25 c typical operating characteristics (continued) (max2652 ev kit, v cc = +3.0v, input and output matched with recommended matching networks, t a = +25?, unless otherwise noted.) max2652 (dcs band)
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers 12 ______________________________________________________________________________________ typical operating characteristics (continued) (max2653 ev kit, v cc = +3.0v, input and output matched with recommended matching networks, t a = +25?, unless otherwise noted.) high gain low gain f = 1840mhz 10 -11 12 -9 14 -7 16 -5 18 -3 -25 -20 -15 -10 -5 0 power gain vs. input power ma\x2651-15 p in (dbm) power gain (db) low gain (db) -20 -10 0 10 20 1800 1840 1880 1920 1960 2000 power gain vs. frequency ma\x2653-16 frequency (mhz) gain (db) high gain low gain 1800 1840 1880 1920 1960 2000 input return loss vs. frequency ma\x2653-17 frequency (mhz) ? s 11 ? 2 (db) -16 -12 -8 -4 0 low gain high gain 1800 1840 1880 1920 1960 2000 output return loss vs. frequency ma\x2653-18 frequency (mhz) ? s 22 ? 2 (db) high gain -40 -30 -20 -10 0 low gain 1800 1840 1880 1920 1960 2000 reverse isolation vs. frequency ma\x2653-19 frequency (mhz) ? s 12 ? 2 (db) -30 -20 -10 0 -40 low gain high gain 4 5 6 7 8 supply current vs. v cc high gain MAX2651-20 v cc (v) i cc (ma) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 no input signal t a = +85 c t a = -40 c t a = +25 c 1.0 1.5 2.0 2.5 3.0 supply current vs. v cc low gain MAX2651-21 v cc (v) i cc (ma) 2.7 3.0 2.8 2.9 3.1 3.2 3.3 no input signal t a = +25 c t a = -40 c t a = +85 c max2653 (dcs band)
max2652 MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers ______________________________________________________________________________________ 13 pin description gnd gsmin gnd dcsin band logic-level band control logic-level gain control 1 2 3 4 5 10 100pf c9 2.2pf 220pf 9 8.2nh 180 ? 220pf 2.2nh dcs output gsm output 330 ? 8 7 6 910 ? 220pf 1.5pf 3.9nh 68pf 47pf dcs input (1805mhz to 1880mhz) gsm input (925mhz to 960mhz) 15pf gain gsmout v cc v cc v cc v cc dcsout gnd MAX2651 8.2nh 910 ? 1.2pf 10f figure 1. MAX2651 typical application circuit pin 1, 3, 6 2 8 7 5 4 10 9 function shutdown logic input. drive low to enter shutdown; drive high or con- nect to v cc for normal operation. rf ground. connect to the ground plane as close to the ic as possible to minimize trace inductance. rf input for gsm band supply voltage input, +2.7v < v cc < +3.3v rf output for dcs and pcs bands band-select logic input. drive band high to enable dcs/pcs lna; drive low to enable gsm lna. rf input for dcs and pcs bands gain-select logic input. drive gain high for high-gain operation; drive gain low for low-gain operation. rf output for gsm band 1 3, 6 2 8 7 5 4 10 9 1 2, 4, 5 7 6 3 8 name shdn gnd gsmin v cc dcsout band dcsin gain gsmout MAX2651 max2652 max2653
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers 14 ______________________________________________________________________________________ shdn gnd dcsin gnd 1 2 4 3 1.0pf (0.8pf*) 47pf 8 2.7nh (2.2nh*) dcs output 330 ? (510 ? *) 7 6 5 1.5pf 3.3nh 100pf 2200pf dcs input (1805mhz to 1880mhz) logic-level shutdown control logic-level gain control gain v cc v cc 100pf 200pf dcsout gnd max2653 1k ? 1k ? * for optimum pcs-band (1930mhz to 1990mhz) performance, use these components. v cc figure 3. max2653 typical application circuit shdn gsmin gnd dcsin band logic-level band control logic-level gain control 1 2 3 4 5 10 100pf c9 2.2pf 220pf 9 8.2nh 240 ? 220pf 2.2nh dcs output gsm output 8 7 6 910 ? 220pf 1.1pf 3.3nh 68pf 47pf dcs input (1805mhz to 1880mhz) gsm input (925mhz to 960mhz) 5.6pf gain gsmout v cc v cc v cc v cc dcsout gnd max2652 220pf logic-level shutdown control 6.8nh 910 ? 1.2pf 10 f 1 f 910 ? figure 2. max2652 typical application circuit
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers ______________________________________________________________________________________ 15 detailed description gain select the MAX2651/max2652/max2653 offer a step gain in the lna to optimize the receiver? dynamic range. a logic-level low at gain reduces the active lna? gain by about 20db and reduces supply current by 3.5ma. shutdown functionality the max2652/max2653 offer a low-current shutdown feature. drive shdn low to power down the lna and reduce supply current to less than 0.25?. applications information external components the MAX2651/max2652/max2653 require matching circuits at their inputs and outputs for operation in a 50 ? system. the application circuits in figures 1, 2, and 3 describe the matching circuits for each device? lna; suggested component values, suppliers, and part numbers are listed in the MAX2651/max2652/ max2653 ev kits manual. these values are optimized for best simultaneous noise figure, gain, and return loss performance. input and output impedance matching networks are very sensitive to layout-related parasitics. it is important to keep all matching components as close to the device as possible to minimize the effects of stray inductance and stray capacitance of pc board traces, particularly for the 1800mhz and 1900mhz bands. using the collector load resistor to set gain the MAX2651/max2652/max2653 provide open-col- lector output stages to allow an external resistor to set the gain. the collector pull-up resistors set the gain for each lna to about 18db. lower gains are achieved by reducing this resistance, and higher gains are achieved by increasing it. the maximum achievable gain is defined by the maximum collector current swing. note that the value of the collector gain-setting resistor principally defines the lna? output imped- ance, and that the matching networks are tuned to match this impedance to 50 ? . redefining the lna gain by changing the collector gain-setting resistor requires retuning the output matching networks. layout and power-supply bypassing a properly designed pc board is essential to any rf/microwave circuit. be sure to use controlled imped- ance lines on all high-frequency inputs and outputs. proper grounding of the gnd pins is fundamental; if the pc board uses a topside rf ground, connect all gnd pins directly to it. for boards where the ground plane is not on the component side, it? best to connect all gnd pins to the ground plane with plated through- holes close to the package. to minimize coupling between different sections of the system, the ideal power-supply layout is a star configu- ration with a large decoupling capacitor at a central v cc node. the v cc traces branch out from this central node, each leading to a separate v cc node on the pc board. a second bypass capacitor that has low esr at the rf frequency of operation is placed at the end of each trace. this arrangement provides local decou- pling at the v cc pin. at high frequencies, any signal leaking out of one supply pin sees a relatively high impedance (formed by the v cc trace inductance) to the central v cc node and an even higher impedance to any other supply pin, as well as a low impedance to ground through its bypass capacitor. chip information MAX2651 transistor count: 272 max2652 transistor count: 272 max2653 transistor count: 253
MAX2651/max2652/max2653 gsm900 and dcs1800/pcs1900 dual-band, low-noise amplifiers maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 16 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2003 maxim integrated products printed usa is a registered trademark of maxim integrated products. 8lumaxd.eps package outline, 8l umax/usop 1 1 21-0036 j rev. document control no. approval proprietary information title: max 0.043 0.006 0.014 0.120 0.120 0.198 0.026 0.007 0.037 0.0207 bsc 0.0256 bsc a2 a1 c e b a l front view side view e h 0.60.1 0.60.1 ? 0 .500.1 1 top view d 8 a2 0.030 bottom view 1 6 s b l h e d e c 0 0.010 0.116 0.116 0.188 0.016 0.005 8 4x s inches - a1 a min 0.002 0.950.75 0.5250 bsc 0.25 0.36 2.95 3.05 2.95 3.05 4.78 0.41 0.65 bsc 5.03 0.66 60 0.13 0.18 max min millimeters - 1.10 0.05 0.15 dim 10lumax.eps package outline, 10l umax/usop 1 1 21-0061 i rev. document control no. approval proprietary information title: top view front view 1 0.498 ref 0.0196 ref s 6 side view bottom view 0 0 6 0.037 ref 0.0078 max 0.006 0.043 0.118 0.120 0.199 0.0275 0.118 0.0106 0.120 0.0197 bsc inches 1 10 l1 0.0035 0.007 e c b 0.187 0.0157 0.114 h l e2 dim 0.116 0.114 0.116 0.002 d2 e1 a1 d1 min -a 0.940 ref 0.500 bsc 0.090 0.177 4.75 2.89 0.40 0.200 0.270 5.05 0.70 3.00 millimeters 0.05 2.89 2.95 2.95 - min 3.00 3.05 0.15 3.05 max 1.10 10 0.60.1 0.60.1 ? 0.500.1 h 4x s e d2 d1 b a2 a e2 e1 l l1 c gage plane a2 0.030 0.037 0.75 0.95 a1 note: the packages for these devices do not feature the exposed pad. package information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline information, go to www.maxim-ic.com/packages .)

▲Up To Search▲

Price & Availability of MAX2651

	To Download MAX2651 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .