View LT1252_152490.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

LT1252 Low Cost Video Amplifier
FEATURES
s s s s s s s s
DESCRIPTIO
Low Cost Current Feedback Amplifier Differential Gain: 0.01%, RL = 150, VS = 5V Differential Phase: 0.09, RL = 150, VS = 5V Flat to 30MHz, 0.1dB 100MHz Bandwidth on 5V Wide Supply Range: 2V(4V) to 14V(28V) Low Power: 85mW at 5V
The LT1252 is a low cost current feedback amplifier for video applications. The LT1252 is ideal for driving low impedance loads such as cables and filters. The wide bandwidth and high slew rate of this amplifier make driving RGB signals between PCs and workstations easy. The linearity of the LT1252 is outstanding; it is unsurpassed for driving composite video. The LT1252 is available in the 8-pin DIP and the S8 surface mount package. For higher performance and shutdown operation, see the LT1227. For dual and quad amplifiers with similar performance see the LT1253/LT1254.
APPLICATI
s s s
S
RGB Cable Drivers Composite Video Cable Drivers Gain Blocks in IF Stages
TYPICAL APPLICATI
5V VIN +
Transient Response
75 LT1252 - -5V RF 620 VOUT RG 620 75 75 CABLE
AV = 1 +
RF BW = 100MHz RG AT AMPLIFIER OUTPUT. 6dB LESS AT VOUT.
LT1252 * TA01
VS = 5V AV = 2 RL = 150 VO = 1V
U
LT1252 * TA02
UO
UO
1
LT1252 ABSOLUTE AXI U RATI GS
Storage Temperature Range ................ - 65C to 150C Junction Temperature (Note 2)............................ 150C Lead Temperature (Soldering, 10 sec)................. 300C Total Supply Voltage (V + to V -) ............................. 28V Input Current ..................................................... 15mA Output Short-Circuit Duration (Note 1) ........ Continuous Operating Temperature Range .................... 0C to 70C
PACKAGE/ORDER I FOR ATIO
TOP VIEW NC 1 - IN 2 +IN 3 V- 4 8 7 6 5 NC V+ OUT NC
ORDER PART NUMBER
NC 1 2 3 4
LT1252CS8
S8 PACKAGE 8-LEAD PLASTIC SO
TJMAX = 150C, JA = 150C/ W
S8 PART MARKING 1252
ELECTRICAL CHARACTERISTICS
SYMBOL VOS +IB - IB AVOL PSRR CMRR VOUT IOUT IS RIN CIN PARAMETER Input Offset Voltage Noninverting Bias Current Inverting Bias Current Large-Signal Voltage Gain Power Supply Rejection Ratio Common-Mode Rejection Ratio Maximum Output Voltage Swing Maximum Output Current Supply Current Input Resistance Input Capacitance Power Supply Range SR Input Slew Rate Output Slew Rate Dual Single
0C TA 70C, VS = 5V to 12V, unless otherwise noted.
MIN TYP 5 1 20 MAX 15 15 100 UNITS mV A A V/V dB dB V V mA 18 mA M pF 12 24 125 250 V V V/s V/s
CONDITIONS
VS = 5V, VO = 2V, RL = 150 VS = 3V to 12V VS = 5V, VCM = 2V VS = 12V, RL = 500 VS = 5V, RL = 150
AV = 1 AV = 2
2
U
U
W
WW
U
W
TOP VIEW 8 7 6 5 NC V+ OUT NC
ORDER PART NUMBER LT1252CN8
-IN +IN V-
N8 PACKAGE 8-LEAD PLASTIC DIP
TJMAX = 150C, JA = 100C/ W
560 60 55 7.0 2.5 30 1 2 4
1500 70 65 10.5 3.7 55 8.5 10 3
LT1252
ELECTRICAL CHARACTERISTICS 0C TA 70C, VS = 5V to 12V, unless otherwise noted.
SYMBOL tr tp PARAMETER Small-Signal Rise Time Rise and Fall Time Propagation Delay CONDITIONS VS = 12V, AV = 2 VS = 5V, AV = 2, VOUT = 1VP-P VS = 5V, AV = 2 LT1252CN8: TJ = TA + (PD x 100C/W) LT1252CS8: TJ = TA + (PD x 150C/W) MIN TYP 3.5 5.2 3.5 MAX UNITS ns ns ns
Note 1: A heat sink may be required to keep the junction temperature below absolute maximum when the output is shorted indefinitely. Note 2: TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formulas:
TYPICAL AC PERFOR A CE
BANDWIDTH
VS 12 12 12 12 12 12 12 12 12 5 5 5 5 5 5 5 5 5 5 AV 1 -1 -1 2 2 5 5 10 10 1 1 -1 -1 2 2 5 5 10 10 RL 150 1000 150 1000 150 1000 150 1000 150 1000 150 1000 150 1000 150 1000 150 1000 150 RF 2370 1100 909 1210 909 1000 866 909 768 2210 1300 1000 732 909 787 825 698 750 619 RG None 1100 909 1210 909 249 215 100 84.5 None None 1000 732 909 787 205 174 82.5 68.1 SMALL SIGNAL - 3dB BW (MHz) 282 58 73 253 142 73 75 67 69 260 232 50 69 133 100 62 66 58 60 SMALL SIGNAL - 0.1dB BW (MHz) 45 17 34 20 38 25 31 26 32 10 50 11 34 24 30 21 30 22 30 SMALL SIGNAL PEAKING (dB) 1.9 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 2.4 0.8 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
NTSC VIDEO (Note 1)
VS 12 12 5 5 AV 2 2 2 2 RL 1000 150 1000 150 RF 1000 1000 1000 1000 RG 1000 1000 1000 1000 DIFFERENTIAL GAIN 0.02% 0.03% 0.02% 0.01% DIFFERENTIAL PHASE 0.02 0.04 0.08 0.09
Note 1: Differential Gain and Phase are measured using a Tektronix TSG 120 YC/NTSC signal generator and a Tektronix 1780R Video Measurement Set. The resolution of this equipment is 0.1% and 0.1. Ten identical
UW
amplifier stages were cascaded giving an effective resolution of 0.01% and 0.01.
3
LT1252
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current vs Supply Voltage
14 13
SUPPLY CURRENT (mA)
OUTPUT SATURATION VOLTAGE (V)
11 10 9 8 7 6 5 4 0 2 4
-55C
COMMON-MODE RANGE (V)
12
25C
125C 175C
6 8 10 12 14 SUPPLY VOLTAGE (V)
Settling Time to 10mV vs Output Step
10 8 6 NONINVERTING INVERTING VS = 12V RF = RG = 1k
-30
POWER SUPPLY REJECTION (dB)
DISTORTION (dBc)
OUTPUT STEP (V)
4 2 0 -2 -4 -6 -8 -10
0
20
60 40 SETTLING TIME (ns)
Spot Noise Voltage and Current vs Frequency
100
100
-in
OUTPUT IMPEDANCE ()
10 RF = RG = 2k RF = RG = 1k 0.1
OUTPUT SHORT-CIRCUIT CURRENT (mA)
SPOT NOISE (nV/Hz OR pA/Hz)
10
en +in 1 10
100
1k 10k FREQUENCY (Hz)
4
UW
16 18
LT1252 * TPC01
Input Common-Mode Limit vs Temperature
V+ -0.5 -1.0 -1.5 -2.0 V + = 2V TO 12V
V+ -0.5 -1.0
Output Saturation Voltage vs Temperature
RL = 2V VS 12V
2.0 1.5 1.0 0.5 V- -50 -25 50 25 0 75 TEMPERATURE (C) 100 125 V - = -2V TO -12V
1.0 0.5 V- -50 -25
50 25 75 0 TEMPERATURE (C)
100
125
LT1252 * TPC02
LT1252 * TPC03
2nd and 3rd Harmonic Distortion vs Frequency
-20 VS = 12V VO = 2VP-P RL = 100 RF = 820 AV = 10dB 2ND 3RD
80
Power Supply Rejection vs Frequency
VS = 12V RL = 100 RF = RG = 1k 60 POSITIVE NEGATIVE 40
-40
-50
-60
20
-70
80 100
1
10 FREQUENCY (MHz)
100
LT1252 * TPC05
0 10k
100k
1M 10M FREQUENCY (Hz)
100M
LT1252 * TPC06
LT1252 * TPC04
Output Impedance vs Frequency
70
VS = 12V
Output Short-Circuit Current vs Junction Temperature
60
1
50
40
0.01
100k
LT1252 * TPC07
0.001 10k
100k
1M 10M FREQUENCY (Hz)
100M
30 -50 -25
0
25 50 75 100 125 150 175 TEMPERATURE (C)
LT1252 * TPC09
LT1252 * TPC08
LT1252
TYPICAL PERFOR A CE CHARACTERISTICS
12V Frequency Response
5 4 3 2 PHASE 0 -20 -40 -60
GAIN (dB)
GAIN (dB)
1 0 -1 -2 -3 -4 -5 1M VS = 12V AV = 1 RL = 150 RF = 2.37k 10M 100M FREQUENCY (Hz) 1G
LT1252 * TPC10
12V Frequency Response
12 11 10 9 PHASE 0 -20 -40 -60
GAIN (dB)
7 6 5 4 3 2 1M VS = 12V AV = 2 RL = 150 RF = 909 RG = 909
-100 -120 -140 -160 GAIN -180 -200 10M 100M FREQUENCY (Hz) 1G
LT1252 * TPC12
GAIN (dB)
8
12V Frequency Response
26 25 24 23
GAIN (dB)
GAIN (dB)
22 21 20 19 18 17 16 1M VS = 12V AV = 10 RL = 150 RF = 768 RG = 84.5 GAIN
10M 100M FREQUENCY (Hz)
UW
5V Frequency Response
5 4 3 2
PHASE (DEG)
0 -20 -40 PHASE -60
PHASE (DEG)
-80 GAIN -100 -120 -140 -160 -180 -200
1 0 -1 -2 -3 -4 -5 1M VS = 5V AV = 1 RL = 150 RF = 1.3k 10M 100M FREQUENCY (Hz) 1G
LT1252 * TPC11
-80 GAIN -100 -120 -140 -160 -180 -200
5V Frequency Response
12 11 10 9
PHASE (DEG)
0 -20 -40 PHASE -60
PHASE (DEG)
-80
8 7 6 5 4 3 2 1M VS = 5V AV = 2 RL = 150 RF = 787 RG = 787 GAIN
-80 -100 -120 -140 -160 -180 -200 10M 100M FREQUENCY (Hz) 1G
LT1252 * TPC13
5V Frequency Response
0 -20 -40
26 25 24 23 PHASE (DEG) 22 21 20 19 18 17 16 1M VS = 5V AV = 10 RL = 150 RF = 619 RG = 68.1 GAIN PHASE 0 -20 -40 -60 PHASE (DEG) -80 -100 -120 -140 -160 -180 -200 10M 100M FREQUENCY (Hz) 1G
LT1252 * TPC15
PHASE
-60 -80 -100 -120 -140 -160 -180 -200 1G
LT1252 * TPC14
5
LT1252
TYPICAL PERFOR A CE CHARACTERISTICS
Transient Response Transient Response
VS = 5V AV = 1 RL = 150 RF = 619 VO = 1V
TYPICAL APPLICATIO S
Single Supply AC-Coupled Amplifier Noninverting
5V 4.7F
+
AV =
22F
10k
VIN
+
10k LT1252 VOUT
2.2F
-
220F
RS VIN 220F
+
51
510 AV = 11 BW = 14Hz to 60MHz
6
+
VI
-
U
UW
LT1252 * TPC16
VS = 5V AV = 10 RL = 150
RF = 619 RG = 68.1 VO = 1.5V
LT1252 * TPC17
Single Supply AC-Coupled Amplifier Inverting
5V 4.7F 510 10 RS + 51 10k
+
BW = 14Hz to 60MHz
+
+
10k
+
LT1252 VOUT
-
+
51
510
LT1252 * TA04
LT1252 * TA03
Half Wave Rectifier
750
750
1N5712
750
1N5712 LT1252 VOUT
LT1252 * TA05
LT1252
SI PLIFIED SCHE ATIC
V+
+IN
PACKAGE DESCRIPTIO
0.300 - 0.320 (7.620 - 8.128)
0.009 - 0.015 (0.229 - 0.381)
0.065 (1.651) TYP 0.125 (3.175) MIN 0.020 (0.508) MIN
(
+0.025 0.325 -0.015 8.255 +0.635 -0.381
)
0.045 0.015 (1.143 0.381) 0.100 0.010 (2.540 0.254)
0.010 - 0.020 x 45 (0.254 - 0.508) 0.008 - 0.010 (0.203 - 0.254) 0.016 - 0.050 0.406 - 1.270
0.053 - 0.069 (1.346 - 1.752)
0- 8 TYP
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 representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
U
W
W
-IN
VOUT
V-
LT1252 * SS
Dimensions in inches (millimeters) unless otherwise noted. N8 Package 8-Lead Plastic DIP
0.045 - 0.065 (1.143 - 1.651)
0.130 0.005 (3.302 0.127)
0.400 (10.160) MAX 8 7 6 5
0.250 0.010 (6.350 0.254)
1
2
3
4
0.018 0.003 (0.457 0.076)
N8 0392
S8 Package 8-Lead Plastic SOIC
0.189 - 0.197 (4.801 - 5.004) 0.004 - 0.010 (0.101 - 0.254) 8 7 6 5
0.228 - 0.244 (5.791 - 6.197) 0.014 - 0.019 (0.355 - 0.483) 0.050 (1.270) BSC
0.150 - 0.157 (3.810 - 3.988)
SO8 0392
1
2
3
4
7
LT1252
U.S. Area Sales Offices
NORTHEAST REGION Linear Technology Corporation One Oxford Valley 2300 E. Lincoln Hwy.,Suite 306 Langhorne, PA 19047 Phone: (215) 757-8578 FAX: (215) 757-5631 Linear Technology Corporation 266 Lowell St., Suite B-8 Wilmington, MA 01887 Phone: (508) 658-3881 FAX: (508) 658-2701 SOUTHEAST REGION Linear Technology Corporation 17060 Dallas Parkway Suite 208 Dallas, TX 75248 Phone: (214) 733-3071 FAX: (214) 380-5138 CENTRAL REGION Linear Technology Corporation Chesapeake Square 229 Mitchell Court, Suite A-25 Addison, IL 60101 Phone: (708) 620-6910 FAX: (708) 620-6977 SOUTHWEST REGION Linear Technology Corporation 22141 Ventura Blvd. Suite 206 Woodland Hills, CA 91364 Phone: (818) 703-0835 FAX: (818) 703-0517 NORTHWEST REGION Linear Technology Corporation 782 Sycamore Dr. Milpitas, CA 95035 Phone: (408) 428-2050 FAX: (408) 432-6331
International Sales Offices
FRANCE Linear Technology S.A.R.L. Immeuble "Le Quartz" 58 Chemin de la Justice 92290 Chatenay Malabry France Phone: 33-1-41079555 FAX: 33-1-46314613 GERMANY Linear Techonolgy GmbH Untere Hauptstr. 9 D-85386 Eching Germany Phone: 49-89-3197410 FAX: 49-89-3194821 JAPAN Linear Technology KK 5F YZ Bldg. 4-4-12 Iidabashi, Chiyoda-Ku Tokyo, 102 Japan Phone: 81-3-3237-7891 FAX: 81-3-3237-8010 KOREA Linear Technology Korea Branch Namsong Building, #505 Itaewon-Dong 260-199 Yongsan-Ku, Seoul Korea Phone: 82-2-792-1617 FAX: 82-2-792-1619 SINGAPORE Linear Technology Pte. Ltd. 101 Boon Keng Road #02-15 Kallang Ind. Estates Singapore 1233 Phone: 65-293-5322 FAX: 65-292-0398 TAIWAN Linear Technology Corporation Rm. 801, No. 46, Sec. 2 Chung Shan N. Rd. Taipei, Taiwan, R.O.C. Phone: 886-2-521-7575 FAX: 886-2-562-2285 UNITED KINGDOM Linear Technology (UK) Ltd. The Coliseum, Riverside Way Camberley, Surrey GU15 3YL United Kingdom Phone: 44-276-677676 FAX: 44-276-64851
World Headquarters
Linear Technology Corporation 1630 McCarthy Blvd. Milpitas, CA 95035-7487 Phone: (408) 432-1900 FAX: (408) 434-0507
0294
8
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
(408) 432-1900 q FAX: (408) 434-0507 q TELEX: 499-3977
LT/GP 0694 2K REV A
(c) LINEAR TECHNOLOGY CORPORATION 1994

▲Up To Search▲

Price & Availability of LT1252

	To Download LT1252 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .