LT1125CSW-TRPBF Ver la hoja de datos (PDF) - Linear Technology

Número de pieza

componentes Descripción

Fabricante

LT1125CSW-TRPBF

Dual/Quad Low Noise, High Speed Precision Op Amps

Linear Technology 

LT1124/LT1125

Typical Application

Strain Gauge Signal Conditioner with Bridge Excitation

15V

5k

3+

2.5V

1/4

1

LT1009

2

LT1125

–

–15V

350Ω

BRIDGE

15V

13 –

1/4

14

12

LT1125

+

1k

THE LT1124/LT1125 IS CAPABLE OF PROVIDING EXCITATION CURRENT DIRECTLY

TO BIAS THE 350Ω BRIDGE AT 5V WITH ONLY 5V ACROSS THE BRIDGE (AS OPPOSED

TO THE USUAL 10V) TOTAL POWER DISSIPATION AND BRIDGE WARM-UP DRIFT IS

REDUCED. THE BRIDGE OUTPUT SIGNAL IS HALVED, BUT THE LT1124/LT1125 CAN

AMPLIFY THE REDUCED SIGNAL ACCURATELY.

REFERENCE

OUTPUT

15V

5+

4

1/4

7

301k*

10k

ZERO

6

LT1125

–

13

1µF

TRIM

–15V

0V TO 10V

OUTPUT

301k*

50k

GAIN

TRIM

1k

*RN60C FILM RESISTORS

499Ω*

–15V

1124/25 TA05

Related Parts

PART NUMBER

LT1007

LT1028/LT1128

LT1112/LT1114

LT1113

LT1126/LT1127

LT1169

LT1792

LT1793

DESCRIPTION

Single Low Noise, Precision Op Amp

Single Low Noise, Precision Op Amps

Dual/Quad Precision Picoamp Input

Dual Low Noise JFET Op Amp

Decompensated LT1124/LT1125

Dual Low Noise JFET Op Amp

Single LT1113

Single LT1169

COMMENTS

2.5nV/√Hz 1kHz Voltage Noise

0.85nV/√Hz Voltage Noise

250pA Max IB

4.5nV/√Hz Voltage Noise, 10fA/√Hz Current Noise

11V/µs Slew Rate

6nV/√Hz Voltage Noise, 1fA/√Hz Current Noise, 10pA Max IB

4.2nV/√Hz Voltage Noise, 10fA/√Hz Current Noise

6nV/√Hz Voltage Noise, 1fA/√Hz Current Noise, 10pA Max IB

20 Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 950F3o5r -m7o4r1e7information www.linear.com/LT1124

(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com/LT1124

11245ff

LT 0114 REV F • PRINTED IN USA

 LINEAR TECHNOLOGY CORPORATION 1992

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