LF257N

更新时间： 2024-11-08 22:47:11

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		运算放大器
页数	文件大小	规格书
14页	251K
描述
WIDE BANDWIDTH SINGLE J-FET OPERATIONAL AMPLIFIERS

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中文翻译

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数据手册

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LF257N 数据手册

LF155-LF255-LF355

LF156-LF256-LF356

LF157-LF257-LF357

WIDE BANDWIDTH

SINGLE J-FET OPERATIONAL AMPLIFIERS

HIGH INPUT IMPEDANCE J-FET INPUT

STAGE

HIGH SPEED J-FET OP-AMPs : up to 20MHz,

50V/µs

OFFSETVOLTAGEADJUSTMENTDOESNOT

DEGRADE DRIFT OR COMMON-MODE

REJECTION AS IN MOST OF MONOLITHIC

AMPLIFIERS

INTERNAL COMPENSATION AND LARGE

DIP8

(Plastic Package)

SO8

DIFFERENTIALINPUTVOLTAGECAPABILITY

(UP TO V_CC

)

(Plastic Micropackage)

TYPICAL APPLICATIONS

PRECISION HIGH SPEED INTEGRATORS

FAST D/A AND CONVERTERS

HIGH IMPEDANCE BUFFERS

WIDEBAND, LOW NOISE, LOW DRIFT

AMPLIFIERS

LOGARITHIMIC AMPLIFIERS

PHOTOCELL AMPLIFIERS

SAMPLE AND HOLD CIRCUITS

ORDER CODES

Package

Temperature

Range

Part Number

•

LF355, LF356, LF357

LF255, LF256, LF257

LF155, LF156, LF157

Example : LF355N

0^oC, +70^oC

–40^oC, +105^oC

–55^oC, +125^oC

•

PIN CONNECTIONS (top view)

DESCRIPTION

These circuits are monolithic J-FET input operational

amplifiers incorporating well matched, high voltage

J-FET on the same chip with standardbipolar transis-

tors.

This amplifiers feature low input bias and offset cur-

rents, low input offset voltage and input offset voltage

drift,coupledwith offsetadjustwhichdoesnotdegrade

driftor common-mode rejection.

5 - Offset Null 2

6 - Output

7 - V_CC

1 - Offset Null 1

2 - Inverting input

3 - Non-inverting input

The devicesarealso designedforhigh slew rate, wide

bandwidth,extremelyfastsettlingtime,lowvoltageand

current noise and a low 1/f noise level.

8 - N.C.

4 - V_CC

July 1998

1/14

12 3 4 5 6 7...14

中文翻译

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