Datasheet Analog Devices LT1122DS8#PBF — 数据表

LT1122
Fast Settling, JFET Input
Operational Amplifier
FEATURES DESCRIPTION 100% Tested Settling Time 340ns Typ to 1mV at Sum Node, 10V Step 540ns Max Tested with Fixed Feedback Capacitor
n Slew Rate 60V/µs Mi Gain-Bandwidth Product 14MHz
n Power Bandwidth (20V
P-P) 1.2 MHz
n Unity-Gain Stable; Phase Margin 60°
n Input Offset Voltage 600µV Max
n Input Bias Current 25°C
75pA Max 70°C 600pA Max
■ Input Offset Current 25°C
40pA Max 70°C 150pA Max
■ Low Distortion The LT®1122 JFET input operational amplifier combines
high speed and precision performance. n APPLICATIONS n n n n n n A unique poly-gate JFET process minimizes gate series
resistance and gate-to-drain capacitance, facilitating wide
bandwidth performance, without degrading JFET transistor matching.
It slews at 80V/µs and settles in 340ns. The LT1122 is
internally compensated to be unity-gain stable, yet it has
a bandwidth of 14MHz at a supply current of only 7mA. Its
speed makes the LT1122 an ideal choice for fast settling
12-bit data conversion and acquisition systems.
The LT1122 offset voltage of 120µV, and voltage gain of …