LF357 STMICROELECTRONICS [STMicroelectronics], LF357 Datasheet

LF357

Manufacturer Part Number

LF357

Description

WIDE BANDWIDTH SINGLE J-FET OPERATIONAL AMPLIFIERS

Manufacturer

STMICROELECTRONICS [STMicroelectronics]

Datasheets

1.LF357.pdf (14 pages)

2.LF357.pdf (14 pages)

3.LF155N.pdf (14 pages)

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Current page: 1 of 14
Download datasheet (252Kb)

TYPICAL APPLICATIONS

DESCRIPTION

These circuits are monolithic J-FET input operational

amplifiers incorporating well matched, high voltage

J-FET on the same chip with standard bipolar transis-

tors.

This amplifiers feature low input bias and offset cur-

rents, low input offset voltage and input offset voltage

drift,coupledwith offsetadjust which doesnot degrade

drift or common-mode rejection.

The devices are also designed for high slew rate, wide

bandwidth,extremelyfastsettlingtime, lowvoltageand

current noise and a low 1/f noise level.

July 1998

HIGH INPUT IMPEDANCE J-FET INPUT

STAGE

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

50V/ s

OFFSET VOLTAGE ADJUSTMENT DOES NOT

DEGRADE DRIFT OR COMMON-MODE

REJECTION AS IN MOST OF MONOLITHIC

AMPLIFIERS

INTERNAL COMPENSATION AND LARGE

DIFFERENTIAL INPUT VOLTAGECAPABILITY

(UP TO V

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

)

SINGLE J-FET OPERATIONAL AMPLIFIERS

ORDER CODES

PIN CONNECTIONS (top view)

LF355, LF356, LF357

LF255, LF256, LF257

LF155, LF156, LF157

Example : LF355N

Part Number

(Plastic Package)

1 - Offset Null 1

2 - Inverting input

3 - Non-inverting input

4 - V

DIP8

LF155-LF255-LF355

LF156-LF256-LF356

LF157-LF257-LF357

WIDE BANDWIDTH

–40

–55

Temperature

(Plastic Micropackage)

Range

C, +70

C, +105

C, +125

5 - Offset Null 2

6 - Output

7 - V

8 - N.C.

SO8

Package

1/14

Related parts for LF357

LF357 Summary of contents

Page 1

... July 1998 LF155-LF255-LF355 LF156-LF256-LF356 LF157-LF257-LF357 WIDE BANDWIDTH N DIP8 SO8 (Plastic Package) (Plastic Micropackage) ORDER CODES Temperature Part Number Range o o LF355, LF356, LF357 LF255, LF256, LF257 –40 C, +105 LF155, LF156, LF157 –55 C, +125 C Example : LF355N ...

Page 2

... Input Voltage - (note Differential Input Voltage id P Power Dissipation tot Output Short-circuit Duration T Operating Free Air Temperature Range oper T Storage Temperature Range stg 2/14 Parameter LF155-LF156-LF157 LF255-LF256-LF257 LF355-LF356-LF357 Value Unit 570 mW Infinite o -55 to +125 C –40 to +105 –65 to 150 ...

Page 3

ELECTRICAL CHARACTERISTICS LF155, LF156, LF157 -55 LF255, LF256, LF257 -40 (unless otherwise specified) Symbol Parameter V Input Offset Voltage ( amb min. amb max. I Input Offset ...

Page 4

... S LF355 LF356, LF357 LF355 LF356, LF357 LF355 LF356, LF357 is the thermal resistance from junction to ambient. Use of a heatsink is recommended h(j-a) = -5, the feedback resistor from output to input (unless otherwise specified) LF355 - LF356 - LF357 Unit Min. Typ. Max ...

Page 5

APPLICATION HINTS The LF155, LF156, LF157 series are op amps with J- FETinput transistors. TheseJFETs havelarge reverse breakdown voltagesfromgatetosource or drain elimi- natingtheneed of clamps across the inputs.Therefore large differential input voltages can easily be accom- modatedwithoutalarge increaseof inputcurrents. The ...

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LF357 STMICROELECTRONICS [STMicroelectronics], LF357 Datasheet

LF357

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LF357 Summary of contents

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