Datasheet > LT1457

LT1457

更新时间： 2023-12-20 18:45:35

品牌	Logo	应用领域
亚德诺 - ADI		放大器运算放大器
页数	文件大小	规格书
8页	220K
描述
双通道、精准型 JFET 输入运算放大器

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LT1457 数据手册

LT1457

Dual, Precision

JFET Input Op Amp

FEATURES

DESCRIPTION

■

Handles 10,000pF Capacitive Load

450µV Max Offset Voltage

1200µV Max Offset Voltage in S8 Package

50pA Bias Current at 70°C

13nV/√Hz Voltage Noise

4V/µs Slew Rate

4µV/°C Drift

The LT1457 is a dual, JFET input op amp optimized for

handling large capacitive loads in combination with preci-

sion performance.

■

Precision specifications include 220µV offset voltage in

plastic and surface mount packages. At 70°C input bias

current is 50pA, input offset current is 20pA. Channel

separation is 130dB.

■

130dB Channel Separation

Other dual JFET input op amps from Linear Technology

include the LT1057, which is three times faster than the

LT1457butattheexpenseofsignificantlylowercapacitive

load handling capability; and the LT1113 with 4.5nV/√Hz

voltage noise.

APPLICATIONS

■

Sample-and-Hold (Drives Large Hold Capacitors)

A/D and D/A Converters

Photodiode Amplifiers

■

Voltage-to-Frequency Converters

U W

TYPICAL PERFORMANCE CHARACTERISTICS

Capacitive Load Handling

Input Offset Voltage Distribution

S8 Package

100

400 DUALS

= ±15V

= 25°C

= +1

= ±15V

= 25°C

(800 OP AMPS)

TESTED FROM

3 RUNS

0.1

100

–1.0–0.8 –0.6–0.4 –0.2

0.2 0.4 0.6 0.8 1.0

CAPACITIVE LOAD (nF)

INPUT OFFSET VOLTAGE (mV)

LT11457• TA01

LT1457 • TA02

12 3 4 5 6 7 8

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