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Part: LT1252CS8
Category:
Analog & Mixed-Signal Processing
-> Amplifiers
-> Operational Amplifiers
-> High Speed
Description: LT1252, Low Cost Video Amplifier
Company: Linear Technology Corporation
Datasheet: Download LT1252CS8 datasheet File size : 467 kB
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Datasheet text preview:
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 + LT1252 5V 6 RF 20 6G R 20
Transient Response
75
C 75 ABLE
VOUT 75
AV = 1 +
RF
G
BW = 100MHz
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 ....... 65°C to 150°C Junction Temperature (Note 2).... 150°C Lead Temperature (Soldering, 10 sec)........ 300°C Total Supply Voltage (V + to V ) ..... 28V Input Current ..... ±15mA Output Short-Circuit Duration (Note 1) ........ Continuous Operating Temperature Range ........... 0°C to 70°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW 2 NC 1 +IN 3 VN 4 I
ORDER PART NUMBER
7 8 6 5 V NC O+ NUT C
C 1 2 3 4
LT1252CS8
S8 PACKAGE 8-LEAD PLASTIC SO
TJMAX = 150°C, JA = 150°C/ W
S8 PART MARKING
N
1252
ELECTRICAL CHARACTERISTICS
SYMBOL VOS +IB IB AVOL PSRR CMRR VOUT I OUT 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
0°C TA 70°C, VS = ±5V to ±12V, unless otherwise noted.
MIN TYP 5 1 20 MAX 15 15 100 UNITS mV µA µA V/ V dB dB V V mA 18 mA M pF ± 12 24 125 250 V V V/µs V/µs
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 = 150°C, JA = 100°C/ 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 0°C TA 70°C, 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 × 100°C/W) LT1252CS8: TJ = TA + (PD × 150°C/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
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