Datasheet > LT1122DM

LT1122DM

更新时间： 2024-11-22 22:34:23

品牌	Logo	应用领域
凌特 - Linear		运算放大器
页数	文件大小	规格书
8页	251K
描述
Fast Settling, JFET Input Operational Amplifier

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LT1122DM 数据手册

LT1122

Fast Settling, JFET Input

Operational Amplifier

EATURE

DESCRIPTIO

■

100% Tested Settling Time

to 1mV at Sum Node, 10V Step

Tested with Fixed Feedback Capacitor

Slew Rate

340ns Typ

540ns Max

The LT1122 JFET input operational amplifier combines

high speed and precision performance.

A unique poly-gate JFET process minimizes gate series

resistance and gate-to-drain capacitance, facilitating wide

bandwidth performance, without degrading JFET transis-

tor matching.

■

60V/µs Min

14MHz

Gain Bandwidth Product

Power Bandwidth (20Vp-p)

Unity Gain Stable; Phase Margin

Input Offset Voltage

Input Bias Current

Input Offset Current

Low Distortion

1.2 MHz

60°

600µV Max

75pA Max

600pA Max

40pA Max

150pA Max

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.

25°C

70°C

25°C

70°C

■

The LT1122 offset voltage of 120µV, and voltage gain of

500,000 also support the 12-bit accurate applications.

O U

PPLICATI

The input bias current of 10pA and offset current of 4pA

combined with its speed allow the LT1122 to be used in

such applications as high speed sample and hold amplifi-

ers, peak detectors, and integrators.

■

Fast 12-Bit D/A Output Amplifiers

High Speed Buffers

Fast Sample and Hold Amplifiers

High Speed Integrators

Voltage to Frequency Converters

Active Filters

Log Amplifiers

Peak Detectors

TYPICAL APPLICATI

Large-Signal Response

12-Bit Voltage Output D/A Converter

–

OUT

0mA TO 2mA

OR 4mA

LT1122

0V TO 10V

12-BIT CURRENT OUTPUT D/A CONVERTER

C = 5pF TO 17pF

200ns/DIV

AV = –1

LT1122•TA01

(DEPENDING ON D/A CONVERTER USED)

1122 TA07

12 3 4 5 6 7 8

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