LT1457 Datasheet | Linear Technology

LT1457 Dual, Precision JFET Input Op Amp Features s s s s s s s s DESCRIPTION The LT1457 is a dual, JFET input op amp optimized for handling large capacitive loads in bination with precision performance. Precision specifications include 220µV offset voltage in plastic and surface mount packages. At 70°C input bias current is 50p A, input offset current is 20p A. Channel separation is 130d B. Other dual JFET input op amps from Linear Technology include the LT1057, which is three times faster than the LT1457 but at the expense of significantly lower capacitive load handling capability; and the LT1113 with 4.5n V/√Hz voltage noise. Handles 10,000p F Capacitive Load 450µV Max Offset Voltage 1200µV Max Offset Voltage in S8 Package 50p A Bias Current at 70°C 13n V/√Hz Voltage Noise 4V/µs Slew Rate 4µV/°C Drift 130d B Channel Separation U APPLICATIONS s s s s Sample-and-Hold (Drives Large Hold Capacitors) A/D and D/A Converters Photodiode Amplifiers Voltage-to-Frequency Converters TYPICAL PERFORMANCE CHARACTERISTICS Capacitive Load Handling 100 VS = ±15V TA = 25°C AV = +1 PERCENT OF UNITS 21 18 15 12 9 6 3 0 0.1 0 - 1.0 - 0.8 - 0.6 - 0.4 - 0.2 0 0.2 0.4 0.6 0.8 1.0 INPUT OFFSET VOLTAGE (m V) - TA02 Input Offset Voltage Distribution S8 Package VS = ±15V TA = 25°C 400 DUALS (800 OP AMPS) TESTED FROM 3 RUNS 80 OVERSHOOT (%) 1 10 CAPACITIVE LOAD (n F) LT11457-...