LT1252 Low Cost Video Amplifier DESCRIPTIO FEATURES n Low Cost The LT1252 is a low cost current feedback amplifier for n Current Feedback Amplifier video applications. The LT1252 is ideal for driving low n Differential Gain: 0.01%, R = 150, V = 5V impedance loads such as cables and filters. The wide L S n Differential Phase: 0.09, R = 150, V = 5V bandwidth and high slew rate of this amplifier make L S n Flat to 30MHz, 0.1dB driving RGB signals between PCs and workstations easy. n 100MHz Bandwidth on 5V The linearity of the LT1252 is outstanding it is unsur- n Wide Supply Range: 2V(4V) to 14V(28V) passed for driving composite video. n Low Power: 85mW at 5V 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 APPLICATI S with similar performance see the LT1253/LT1254. n RGB Cable Drivers n Composite Video Cable Drivers n Gain Blocks in IF Stages P CA A L AT TY I L PP IC I Transient Response 5V V + IN 75 LT1252 75 5V CABLE R F 620 V OUT R G 75 620 LT1252 TA02 R F V = 5V A = 1 + BW = 100MHz S V R A = 2 G V R = 150 AT AMPLIFIER OUTPUT. L V = 1V 6dB LESS AT V . O OUT LT1252 TA01 1 UO UO ULT1252 ABSOLUTEXAI U RATI GS + Storage Temperature Range ................ 65C to 150C Total Supply Voltage (V to V ) ............................. 28V Junction Temperature (Note 2)............................ 150C Input Current ..................................................... 15mA Lead Temperature (Soldering, 10 sec)................. 300C Output Short-Circuit Duration (Note 1) ........ Continuous Operating Temperature Range .................... 0C to 70C PACKAGE/ORDER I FOR ATIO ORDER PART ORDER PART TOP VIEW TOP VIEW NUMBER NUMBER NC 1 8 NC NC 1 8 NC + + IN 2 7 V IN 2 7 V LT1252CS8 LT1252CN8 +IN 3 6 OUT +IN 3 6 OUT V 4 5 NC V 4 5 NC S8 PACKAGE S8 PART MARKING N8 PACKAGE 8-LEAD PLASTIC SO 8-LEAD PLASTIC DIP T = 150C, = 150C/ W T = 150C, = 100C/ W JMAX JA JMAX JA 1252 ELECTRICAL CHARACTERISTICS 0C T 70C, V = 5V to 12V, unless otherwise noted. A S SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Input Offset Voltage 515 mV OS +I Noninverting Bias Current 115 A B I Inverting Bias Current 20 100 A B A Large-Signal Voltage Gain V = 5V, V = 2V, R = 150 560 1500 V/V VOL S O L PSRR Power Supply Rejection Ratio V = 3V to 12V 60 70 dB S CMRR Common-Mode Rejection Ratio V = 5V, V = 2V 55 65 dB S CM V Maximum Output Voltage Swing V = 12V, R = 5007.0 10.5 V OUT S L V = 5V, R = 1502.5 3.7 V S L I Maximum Output Current 30 55 mA OUT I Supply Current 8.5 18 mA S R Input Resistance 110 M IN C Input Capacitance 3pF IN Power Supply Range Dual 2 12 V Single 4 24 V SR Input Slew Rate A = 1 125 V/s V Output Slew Rate A = 2 250 V/s V 2 U WU U W W W