Datasheet > LT1462

LT1462

更新时间： 2023-12-20 18:44:07

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
12页	280K
描述
双通道、微功率、260μW C-Load 微微安培偏置电流 JFET 输入运算放大器

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LT1462 数据手册

LT1462/LT1463

Dual/Quad Micropower,

260µW C-Load Picoampere

Bias Current JFET Input Op Amps

FEATURES

DESCRIPTION

The LT ^®1462 (dual) and LT1463 (quad) are the first

micropower op amps (45µA max per amp) to offer

picoampere input bias currents (1pA typ) and unity gain

stability for capacitive loads up to 10nF. The output can

swing a 10k load to within 1.5V of either supply, just like

■

Input Bias Current:

2pA Max (LT1462A)

20pA Max (LT1462, LT1463)

■

Supply Current per Amplifier: 45µA Max

Unity-Gain Stable for C-Load^TMUp to 10nF

■

Input Common Mode Range Includes Positive Rail

Guaranteed Specs with ±5V, ±15V Supplies

Gain Bandwidth Product: 175kHz Typ

Slew Rate: 0.13V/µs Typ

Guaranteed Matching Specifications

Standard Pinout: SO-8, SO-14 Package

op amps that require an order of magnitude more supply

current. This unique combination of performance makes

the LT1462/LT1463 ideal over a wide range of input and

output impedances.

In the design and testing of the LT1462/LT1463, particular

emphasis has been placed on optimizing performance in

thelowcostSO-8(dual)and14-leadSOpackage(quad)for

±15V and ±5V supplies. The input common mode range

includesthepositiverail. Slewrate(0.08V/µsmin)andgain

bandwidthproduct(125kHzmin)are100%tested.Afullset

of matching specifications is also provided.

APPLICATIONS

■

Battery-Powered Systems

Photocurrent Amplifiers

Low Frequency, Micropower Active Filters

Low Droop Track-and-Hold Circuits

■

, LTC and LT are registered trademarks of Linear Technology Corporation.

C-Load is a trademark of Linear Technology Corporation.

■

TYPICAL APPLICATION

Low Power Logging Amplifier

100k

2N3904

1µF

1N4148

Small-Signal Response, C_L= 10nF

1nF

OUT

24k

0.47µF

AMP 3

200pF

1/4 LT1463

100Ω

–

10µF

10M

R10

50k

1/4 LT1463

OUT

1/4 LT1463

1N4148

10k

–

–5V

R11

PHOTODIODE

100k

1462 • TA01

24k

R12

10k

1462 • TA02

A_V= 1

INPUT

DC OUTPUT

V_S= ±5V, ±15V

200pF

1/4 LT1463

CURRENT VOLTAGE OF AMP 3

C_L= 10nF

10pA

100pA

1nA

10nA

100nA

µ1A

1µ0A

10µ0A

1mA

–0.145V

–0.341V

–0.518V

–0.684V

–0.846V

–0.995V

–1.13V

–

10M

1N4148

–1.25V

–1.37V

100k

12 3 4 5 6 7...12

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