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1 lt1259/LT1260 low cost dual and triple 130mhz current feedback amplifiers with shutdown square wave response 2-input video mux cable driver cable output r l = 150 w f = 30mhz lt1259/50 ? ta02 the lt ? 1259 contains two independent 130mhz current feedback amplifiers, each with a shutdown pin. these amplifiers are designed for excellent linearity while driving cables and other low impedance loads. the LT1260 is a triple version especially suited to rgb video applications. these amplifiers operate on all supplies from single 5v to 15v and draw only 5ma per amplifier when active. when shut down, the lt1259/LT1260 amplifiers draw zero supply current and their outputs become high impedance. only two LT1260s are required to make a complete 2-input rgb mux and cable driver. these amplifiers turn on in only 100ns and turn off in 40ns, making them ideal in spread spectrum and portable equipment applications. the lt1259/LT1260 amplifiers are manufactured on linear technologys proprietary complementary bipolar process. n 90mhz bandwidth on 5v n 0.1db gain flatness > 30mhz n completely off in shutdown, 0 m a supply current n high slew rate: 1600v/ m s n wide supply range: 2v(4v) to 15v(30v) n 60ma output current n low supply current: 5ma/amplifier n differential gain: 0.016% n differential phase: 0.075 n fast turn-on time: 100ns n fast turn-off time: 40ns n 14-pin and 16-pin narrow so packages n rgb cable drivers n spread spectrum amplifiers n mux amplifiers n composite video cable drivers n portable equipment , ltc and lt are registered trademarks of linear technology corporation. + 1/2 lt1259 r g 1.6k r f 1.6k a en a v in a + 1/2 lt1259 r g 1.6k r f 1.6k en b v in b b channel select 75 w 75 w 75 w v out 75 w cable lt1259/60 ?ta01 features descriptio u applicatio s u typical applicatio u
2 lt1259/LT1260 supply voltage ..................................................... 18v input current ..................................................... 15ma output short-circuit duration (note 1) ......... continuous specified temperature range (note 2) ....... 0 c to 70 c operating temperature range ............... C 40 c to 85 c storage temperature range ................ C 65 c to 150 c junction temperature (note 4) ............................ 150 c lead temperature (soldering, 10 sec).................. 300 c order part number order part number lt1259cn lt1259cs lt1259in lt1259is LT1260cn LT1260cs LT1260in LT1260is symbol parameter conditions min typ max units v os input offset voltage t a = 25 c212mv l 16 mv input offset voltage drift l 30 m v/ c i in + noninverting input current t a = 25 c 0.5 3 m a l 6 m a i in C inverting input current t a = 25 c2090 m a l 120 m a e n input noise voltage density f = 1khz, r f = 1k, r g = 10 w , r s = 0 w 3.6 nv/ ? hz +i n noninverting input noise current density f = 1khz 1.3 pa/ ? hz Ci n inverting input noise current density f = 1khz 45 pa/ ? hz r in input resistance v in = 13v, v s = 15v l 217 m w v in = 3v, v s = 5v l 225 m w c in input capacitance enabled 2 pf disabled 4 pf c out output capacitance disabled 4.4 pf v in input voltage range v s = 15v, t a = 25 c 13 13.5 v l 12 v v s = 5v, t a = 25 c 3 3.5 v l 2v 0 c t a 70 c, each amplifier v cm = 0v, 5v v s 15v, en pins = 0v, pulse tested, unless otherwise noted. consult factory for military grade parts. t jmax = 150 c, q ja = 70 c/w (n) t jmax = 150 c, q ja = 100 c/w (s) 1 2 3 4 5 6 7 8 top view n package 16-lead plastic dip 16 15 14 13 12 11 10 9 in r +in r gnd in g +in g gnd +in b in b en r out r v + en g out g v out b en b r s package 16-lead plastic soic g b t jmax = 150 c, q ja = 70 c/w (n) t jmax = 150 c, q ja = 110 c/w (s) 1 2 3 4 5 6 7 top view s package 14-lead plastic soic n package 14-lead plastic dip 14 13 12 11 10 9 8 in a +in a gnd gnd gnd +in b in b en a out a v + gnd v out b en b a b absolute axi u rati gs w ww u package/order i for atio uu w electrical characteristics
3 lt1259/LT1260 e lectr ic al c c hara terist ics symbol parameter conditions min typ max units v out maximum output voltage swing v s = 15v, r l = 1k l 12.0 14.0 v v s = 5v, r l = 150 w , t a = 25 c 3.0 3.7 v l 2.5 v cmrr common-mode rejection ratio v s = 15v, v cm = 13v, t a = 25 c5569 db v s = 15v, v cm = 12v l 55 db v s = 5v, v cm = 3v, t a = 25 c5263db v s = 5v, v cm = 2v l 52 db inverting input current v s = 15v, v cm = 13v, t a = 25 c 3.5 10 m a/v common-mode rejection v s = 15v, v cm = 12v l 10 m a/v v s = 5v, v cm = 3v, t a = 25 c 4.5 15 m a/v v s = 5v, v cm = 2v l 15 m a/v psrr power supply rejection ratio v s = 2v to 15v, en pins at v C , t a = 25 c6080 db v s = 3v to 15v, en pins at v C l 60 db noninverting input current v s = 3v to 15v, en pins at v C , t a = 25 c1565na/v power supply rejection v s = 3v to 15v, en pins at v C l 75 na/v inverting input current v s = 2v to 15v, en pins at v C , t a = 25 c 0.1 5 m a/v power supply rejection v s = 3v to 15v, en pins at v C l 5 m a/v a v large-signal voltage gain v s = 15v, v out = 10v, r l = 1k l 57 72 db v s = 5v, v out = 2v, r l = 150 w l 57 69 db r ol transresistance, d v out / d i in C v s = 15v, v out = 10v, r l = 1k l 120 300 k w v s = 5v, v out = 2v, r l = 150 w l 100 200 k w i out maximum output current r l = 0 w , t a = 25 c3060ma i s supply current per amplifier v s = 15v, v out = 0v, t a = 25 c 5.0 7.5 ma (note 5) l 7.9 ma v s = 5v, v out = 0v, t a = 25 c 4.5 6.7 ma disable supply current per amplifier v s = 15v, en pin voltage = 14.5v, r l = 150 w l 3 16.7 m a v s = 15v, sink 1 m a from en pin l 1 2.7 m a enable pin current v s = 15v, en pin voltage = 0v, t a = 25 c 60 200 m a l 300 m a sr slew rate (note 6) t a = 25 c 900 1600 v/ m s t on turn-on delay time (note 7) a v = 10, t a = 25 c 100 400 ns t off turn-off delay time (note 7) a v = 10, t a = 25 c 40 150 ns t r , t f small-signal rise and fall time v s = 12v, r f = r g = 1.5k, r l = 150 w 4.2 ns propagation delay v s = 12v, r f = r g = 1.5k, r l = 150 w 4.7 ns small-signal overshoot v s = 12v, r f = r g = 1.5k, r l = 150 w 5% t s settling time 0.1%, v out = 10v, r f = r g = 1.5k, r l = 1k 75 ns differential gain (note 8) v s = 12v, r f = r g = 1.5k, r l = 150 w 0.016 % differential phase (note 8) v s = 12v, r f = r g = 1.5k, r l = 150 w 0.075 deg 0 c t a 70 c, each amplifier v cm = 0v, 5v v s 15v, en pins = 0v, pulse tested, unless otherwise noted. C40 c t a 85 c, each amplifier v cm = 0v, 5v v s 15v, en pins = 0v, pulse tested, unless otherwise noted. symbol parameter conditions min typ max units v os input offset voltage l 18 mv i in + noninverting input current l 7 m a i in C inverting input current l 130 m a r in input resistance v in = 3v, v s = 5v l 1m w a v large-signal gain l 55 db i s disable supply current per amplifier v s = 15v, en pin voltage = 14.5v, r l = 150 w l 19 m a enable pin current v s = 15v, en pin voltage = 0v l 350 m a
4 lt1259/LT1260 t he l denotes specifications which apply over the specified operating temperature range. note 1: a heat sink may be required depending on the power supply voltage and how many amplifiers have their outputs short circuited. note 2: commercial grade parts are designed to operate over the temperature range of C 40 c to 85 c but are neither tested nor guaranteed beyond 0 c to 70 c. industrial grade parts specified and tested over C40 c to 85 c are available on special request. consult factory. note 3: ground pins are not internally connected. for best performance, connect to ground. note 4: t j is calculated from the ambient temperature t a and the power dissipation p d according to the following formulas: lt1259cn/lt1259in: t j = t a + (p d ? 70 c/w) lt1259cs/lt1259is: t j = t a + (p d ? 110 c/w) LT1260cnLT1260in/: t j = t a + (p d ? 70 c/w) LT1260cs/LT1260is: t j = t a + (p d ? 100 c/w) note 5: the supply current of the lt1259/LT1260 has a negative temperature coefficient. see typical performance characteristics. note 6: slew rate is measured at 5v on a 10v output signal while operating on 15v supplies with r f = 1k, r g = 110 w and r l = 1k. note 7: turn-on delay time is measured while operating on 5v supplies with r f = 1k, r g = 110 w and r l = 150 w . the t on is measured from control input to appearance of 0.5v at the output, for v in = 0.1v. likewise, turn-off delay time is measured from control input to appearance of 0.5v on the output for v in = 0.1v. note 8: differential gain and phase are measured using a tektronix tsg120yc/ntsc signal generator and a tektronix 1780r video measurement set. the resolution of this equipment is 0.1% and 0.1 . six identical amplifier stages were cascaded giving an effective resolution of 0.016% and 0.016 . small signal small signal small signal v s (v) a v r l ( w )r f ( w )r g ( w ) C 3db bw (mhz) 0.1db bw (mhz) peaking (db) 12 2 150 1.5k 1.5k 130 53 0.1 5 2 150 1.1k 1.1k 93 40 0 12 10 150 1.1k 121 69 20 0.13 5 10 150 825 90.9 61 16 0 12v frequency response, a v = 2 frequency (mhz) 1 2 gain (db) 4 6 8 10 10 100 lt1259/60 ?tpc01 3 5 7 9 11 12 200 160 120 ?0 ?0 180 140 100 ?0 0 phase (deg) phase gain v s = 12v r l = 150 w r f = r g = 1.5k ?0 frequency (mhz) 1 16 gain (db) 18 20 22 24 10 100 lt1259/60 ?tpc01 17 19 21 23 25 26 200 160 120 ?0 ?0 180 140 100 ?0 0 phase (deg) phase gain v s = 12v r l = 150 w r f = 1.1k r g = 121 w ?0 12v frequency response, a v = 10 electrical characteristics w u typical ac perfor a ce typical perfor a ce characteristics uw
5 lt1259/LT1260 5v frequency response, a v = 2 frequency (mhz) 1 2 gain (db) 4 6 8 10 10 100 lt1259/60 ?tpc03 3 5 7 9 11 12 200 160 120 ?0 ?0 180 140 100 ?0 0 phase (deg) phase gain v s = 5v r l = 150 w r f = r g = 1.1k ?0 frequency (mhz) 1 16 gain (db) 18 20 22 24 10 100 lt1259/60 ?tpc04 17 19 21 23 25 26 200 160 120 ?0 ?0 180 140 100 ?0 0 phase (deg) phase gain v s = 5v r l = 150 w r f = 825 w r g = 90.9 w ?0 total harmonic distortion vs frequency frequency (hz) 10 0.001 total harmonic distortion (%) 0.01 0.1 1k 100k lt1259/60 ?tpc05 100 10k v s = ?2v r l = 400 w r f = r g = 1.5k v o = 6v rms v o = 1v rms 2nd and 3rd harmonic distortion vs frequency frequency (mhz) 1 ?0 distortion (dbc) ?0 ?0 ?0 ?0 10 100 lt12359/60 ?tpc06 ?0 2nd 3rd v s = 12v v o = 2v p-p a v = 10db r l = 100 w r f = 1.5k maximum undistorted output vs frequency frequency (mhz) 1 0 output voltage (v p-p ) 5 10 15 20 10 100 lt12359/60 ?tpc07 25 v s = 15v r l = 1k r f = 2k a v = 1 a v = 2 a v = 10 power supply rejection vs frequency frequency (hz) 20 power supply rejection (db) 40 50 70 80 100k 1m 10m ltc1259/60 ?tpc08 0 10k 60 30 10 100m v s = 15v r l = 1oo w r f = r g = 1k positive negative spot noise voltage and current vs frequency output impedance vs frequency 5v frequency response, a v = 10 frequency (hz) 10k output impedance ( w ) 1 100 1m 100m lt1259/60 ?tpc10 0.1 10 100k 10m v s = 15v r f = r g = 2k frequency (hz) 10 1 spot noise (nv/ ? hz or pa/ ? hz) 10 100 1k 100k lt1259/60 ?tpc09 100 10k ? n e n +i n typical perfor a ce characteristics uw
6 lt1259/LT1260 output impedance in shutdown vs frequency maximum capacitive load vs feedback resistor output saturation voltage vs temperature frequency (hz) 100k 0.1 output impedance (k w ) 1 10 100 1m 10m 100m lt1259/60 ?tpc11 v s = 15 a v = 1 r f = 1.5k supply current vs supply voltage supply voltage (v) 0 0 supply current (ma) 1 2 3 4 12 7 lt1259/60 ?tpc13 218 5 6 46810 14 16 55? 25? 125? temperature (?) ?0 ?.0 v + 25 75 lt 1259/60 ?tpc14 1.0 ?5 0 50 100 125 0.5 v 0.5 output saturation voltage (v) r l = 2v v s ?8v input common-mode limit vs temperature temperature (?) ?0 v common-mode range (v) 0.5 1.5 2.0 v + 1.5 0 50 75 lt1259/60 ?tpc16 1.0 1.0 0.5 2.0 ?5 25 100 125 v + = 2v to 18v v = ?v to ?8v output short-circuit current vs junction temperature temperature (?) ?0 output short-circuit current (ma) 60 70 150 lt1259/60 ?tpc15 50 40 0 50 100 80 ?5 25 75 125 settling time to 10mv vs output step settling time (ns) 0 ?0 output step (v) ? ? ? 0 10 4 200 400 500 lt1259/60 ?tpc17 ? 6 8 2 100 300 600 700 800 noninverting inverting v s = ?2v r f = 1.5k small-signal rise time feedback resistor (k w ) load capacitance (pf) 1000 lt1259/60 ?tpc12 10 100 26 5 4 3 1 a v = 2 r l = 150 w peaking 5db v s = 5v v s = 15v lt1259/60 g19 v s = 15v a v = 2 r f = r g = 1.6k r l = 150 w typical perfor a ce characteristics uw
7 lt1259/LT1260 feedback resistor selection the small-signal bandwidth of the lt1259/ LT1260 are set by the external feedback resistors and the internal junction capacitors. as a result, the bandwidth is a function of the supply voltage, the value of the feedback resistor, the closed-loop gain and the load resistor. the lt1259/LT1260 have been optimized for 5v supply operation and have a C 3db bandwidth of 90mhz. see resistor selection guide in typical ac performance table. capacitance on the inverting input current feedback amplifiers require resistive feedback from the output to the inverting input for stable operation. take care to minimize the stray capacitance between the output and the inverting input. capacitance on the invert- ing input to ground will cause peaking in the frequency response (and overshoot in the transient response). see the section on demo board information. capacitive loads the lt1259/LT1260 can drive capacitive loads directly when the proper value of feedback resistor is used. the graph of maximum capacitive load vs feedback resistor should be used to select the appropriate value. the value shown is for 5db peaking when driving a 150 w load at a gain of 2. this is a worst case condition. the amplifier is more stable at higher gains. alternatively, a small resistor (10 w to 20 w ) can be put in series with the output to isolate the capacitive load from the amplifier output. this has the advantage that the amplifier bandwidth is only reduced when the capacitive load is present. the disadvantage is that the gain is a function of the load resistance. power supplies the lt1259/LT1260 will operate from single or split supplies from 2v (4v total) to 15v (30v total). it is not necessary to use equal value split supplies, however the offset voltage and inverting input bias current will change. the offset voltage changes about 500 m v per volt of supply mismatch. the inverting bias current can change as much as 5 m a per volt of supply mismatch though typically, the change is about 0.1 m a per volt. slew rate the slew rate of a current feedback amplifier is not independent of the amplifier gain configuration the way slew rate is in a traditional op amp. this is because both the input stage and the output stage have slew rate limitations. in the inverting mode, and for higher gains in the nonin- verting mode, the signal amplitude between the input pins is small and the overall slew rate is that of the output stage. for gains less than ten in the noninverting mode, the overall slew rate is limited by the input stage. en +in ?n out v + v lt1259/60 ?ss , each amplifier si plified sche atic ww applicatio s i for atio wu uu
8 lt1259/LT1260 enable/disable the lt1259/LT1260 amplifiers have a unique high imped- ance, zero supply current mode which is controlled by independent en pins. when disabled, an amplifier output the input slew rate of the lt1259/LT1260 is approxi- mately 270v/ m s and is set by internal currents and capaci- tances. the output slew rate is set by the value of the feedback resistors and internal capacitances. at a gain of 10 with at 1k feedback resistor and 15v supplies, the output slew rate is typically 1600v/ m s. larger feedback resistors will reduce the slew rate as will lower supply voltages, similar to the way the bandwidth is reduced. the graph of maximum undistorted output vs frequency relates the slew rate limitations to sinusoidal input for various gains. looks like a 4.4pf capacitor in parallel with a 75k resistor, excluding feedback resistor effects. these amplifiers are designed to operate with open drain logic: the en pins have internal pullups and the amplifiers draw zero current when these pins are high. to activate an amplifier, its en pin is pulled to ground (or at least 2v below the positive supply). the enable pin current is approximately 60 m a when activated. input referred switching transients with no input signal applied are only 35mv positive and 80mv negative with r l = 100 w . amplifier enable time, a v = 10 v s = 5v v in = 0.1v lt1259/LT1260 ? ai04 r f = 1k r g = 110 w r l = 150 w the enable/disable times are very fast when driven from standard 5v logic. the amplifier enables in about 100ns (50% point to 50% point) while operating on 5v sup- plies. likewise the disable time is approximately 40ns (50% point to 50% point) or 75ns to 90% of the final value. the output decay time is set by the output capaci- tance and load resistor. large-signal transient response, a v = 2 v s = 15v r f = r g = 1.6k lt1259/LT1260 ? ai01 r l = 400 w large-signal transient response, a v = 10 v s = 15v r f = 1k lt1259/LT1260 ? ai02 r g = 110 w r l = 400 w output en v s = 5v v in = 0v output switching transient lt1259/LT1260 ? ai03 r f = r g = 1.6k r l = 100 w output en applicatio s i for atio wu uu
9 lt1259/LT1260 v s = 5v v in = 0.1v amplifier disable time, a v = 10 r f = 1k r g = 110 w lt1259/LT1260 ? ai05 en output r l = 150 w amplifier enable/disable time, a v = 2 v s = 5v v in = 2vpp at 2mhz lt1259/LT1260 ? ai06 output r f = r g = 1.6k r l = 100 w differential input signal swing the differential input swing is limited to about 6v by an esd protection device connected between the inputs. in normal operation, the differential voltage between the input pins is small, so this clamp has no effect. in the disabled mode however, the differential swing can be the same as the input swing, and the clamp voltage will set the maximum allowable input voltage. v s = 5v v in a = v in 2 = 2vpp at 2mhz 2-input video mux switching response lt1259/LT1260 ? ta03 en a en b r f = r g = 1.6k r l = 100 w 2-input video mux cable driver the application on the first page shows a low cost, 2- input video mux cable driver. the scope photo displays the cable output of a 30mhz square wave driving 150 w . in this circuit the active amplifier is loaded by r f and r g of the disabled amplifier, but in this case it only causes a 1.2% gain error. the gain error can be eliminated by configuring each amplifier as a unity-gain follower. the switching time between channels is 100ns when both en a and en b are driven. 2-input rgb mux cable driver demonstration board a complete 2-input rgb mux has been fabricated on pc demo board #039a. the board incorporates two LT1260s with outputs summed through 75 w back termination resistors as shown in the schematic. there are several things to note about demo board #039a: 1. the feedback resistors of the disabled LT1260 load the enabled amplifier and cause a small (1% to 2%) gain error depending on the values of r f and r g . configure the amplifiers as unity-gain followers to eliminate this error. 2. the feedback node has minimum trace length connect- ing r f and r g to minimize stray capacitance. 3. ground plane is pulled away from r f and r g on both sides of the board to minimize stray capacitance. en applicatio s i for atio wu uu typical applicatio s u
10 lt1259/LT1260 4. capacitors c1 and c6 are optional and only needed to reduce overshoot when en 1 or en 2 are activated with a long inductive ground wire. 5. the r, g and b amplifiers have slightly different frequency responses due to different output trace routing to r f (between pins 3 and 4). all amplifiers have slightly less bandwidth in pcb #039 than when measured alone as shown in the typical ac perfor- mance table. 6. part-to-part variation can change the peaking by 0.25db. rgb demo board gain vs frequency frequency (mhz) 1 ? gain (db) ? ? 0 2 10 100 lt1259/60 ?ta04 4 v s = ?2v r l = 150 w r f = r g = 1.6k r g b rgb demo board gain vs frequency frequency (mhz) 1 ? gain (db) ? ? 0 2 10 100 lt1259/60 ?ta05 4 v s = 5v r l = 150 w r f = r g = 1.1k r, b g frequency (mhz) 1 100 all hostile crosstalk (db) ?0 ?0 ?0 ?0 10 100 lt1259/60 ?ta06 0 v s = ?2v r l = 100 w r f = r g = 1.6k r s = 10 w g b r rgb demo board all hostile crosstalk p-dip pc board #039 lt1259/60 ?ta07 r18 (408) 432-1900 LT1260 rgb amplifier demonstration board c8 r17 c7 c5 c4 r1 g1 b1 r2 g2 b2 b g r r15 c3 r14 c2 r13 u1 gnd v v+ en1 en2 r1 r2 r3 r4 r5 r6 r7 r8 r9 r10 r11 r12 u2 c6 r16 c1 typical applicatio s u
11 lt1259/LT1260 information furnished by linear technology corporation is believed to be accurate and reliable. however, no responsibility is assumed for its use. linear technology corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. dimensions in inches (millimeters) unless otherwise noted. s16 0695 1 2 3 4 5 6 7 8 0.150 ?0.157** (3.810 ?3.988) 16 15 14 13 0.386 ?0.394* (9.804 ?10.008) 0.228 ?0.244 (5.791 ?6.197) 12 11 10 9 0.053 ?0.069 (1.346 ?1.752) 0.014 ?0.019 (0.355 ?0.483) 0.004 ?0.010 (0.101 ?0.254) 0.050 (1.270) typ 0.016 ?0.050 0.406 ?1.270 0.010 ?0.020 (0.254 ?0.508) 45 0 ?8 typ 0.008 ?0.010 (0.203 ?0.254) dimension does not include mold flash. mold flash shall not exceed 0.006" (0.152mm) per side dimension does not include interlead flash. interlead flash shall not exceed 0.010" (0.254mm) per side * ** s package 16-lead plastic small outline (narrow 0.150) (ltc dwg # 05-08-1610) s package 14-lead plastic small outline (narrow 0.150) (ltc dwg # 05-08-1610) n package 16-lead pdip (narrow 0.300) (ltc dwg # 05-08-1510) n package 14-lead pdip (narrow 0.300) (ltc dwg # 05-08-1510) n14 0695 0.009 ?0.015 (0.229 ?0.381) 0.300 ?0.325 (7.620 ?8.255) 0.325 +0.025 0.015 +0.635 0.381 8.255 () 0.255 0.015* (6.477 0.381) 0.770* (19.558) max 3 1 2 4 5 6 7 8 9 10 11 12 13 14 0.015 (0.380) min 0.125 (3.175) min 0.130 0.005 (3.302 0.127) 0.045 ?0.065 (1.143 ?1.651) 0.065 (1.651) typ 0.018 0.003 (0.457 0.076) 0.100 0.010 (2.540 0.254) 0.005 (0.125) min *these dimensions do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.010 inch (0.254mm) n16 0695 0.255 0.015* (6.477 0.381) 0.770* (19.558) max 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0.015 (0.381) min 0.125 (3.175) min 0.130 0.005 (3.302 0.127) 0.065 (1.651) typ 0.045 ?0.065 (1.143 ?1.651) 0.018 0.003 (0.457 0.076) 0.005 (0.127) min 0.100 0.010 (2.540 0.254) 0.009 ?0.015 (0.229 ?0.381) 0.300 ?0.325 (7.620 ?8.255) 0.325 +0.025 0.015 +0.635 0.381 8.255 () *these dimensions do not include mold flash or protrusions. mold flash or protrusions shall not exceed 0.010 inch (0.254mm) 0.016 ?0.050 0.406 ?1.270 0.010 ?0.020 (0.254 ?0.508) 45 0 ?8 typ 0.008 ?0.010 (0.203 ?0.254) s14 0695 1 2 3 4 0.150 ?0.157** (3.810 ?3.988) 14 13 0.337 ?0.344* (8.560 ?8.738) 0.228 ?0.244 (5.791 ?6.197) 12 11 10 9 5 6 7 8 0.053 ?0.069 (1.346 ?1.752) 0.014 ?0.019 (0.355 ?0.483) 0.004 ?0.010 (0.101 ?0.254) 0.050 (1.270) typ dimension does not include mold flash. mold flash shall not exceed 0.006" (0.152mm) per side dimension does not include interlead flash. interlead flash shall not exceed 0.010" (0.254mm) per side * ** u package descriptio
12 lt1259/LT1260 ? linear technology corporation 1993 125960fas, sn125960 lt/tp 1197 rev a 4k ? printed in usa demonstration pc board schematic #039 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 + r3 gnd LT1260 r1 r5 + g r1 r2 en 1 c1* 0.01 m f en 2 g1 b1 r6 r4 v + v r13 75 w c2 0.1 m f r14 75 w 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 r9 LT1260 r2 r11 + g g2 b2 r12 r10 r16 75 w c7 0.1 m f r17 75 w c3 0.1 m f r15 75 w c6* 0.01 m f c4 4.7 m f + c5 4.7 m f c8 0.1 m f v out red v out green v out blue r18 75 w r7 r8 *optional lt1259/60 ?ta08 r + b b + + + r linear technology corporation 1630 mccarthy blvd., milpitas, ca 95035-7417 l (408) 432-1900 fax: (408) 434-0507 l telex: 499-3977 l www.linear-tech.com part number description comments lt1203/lt1205 150mhz video multiplexers 2:1 and dual 2:1 muxes with 25ns switch time lt1204 4-input video mux with current feedback amplifier cascadable enable 64:1 multiplexing lt1227 140mhz current feedback amplifier 1100v/ m s slew rate, shutdown mode lt1252/lt1253/lt1254 low cost video amplifiers single, dual and quad current feedback amplifiers related parts typical applicatio u

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