LTC2440

28

sn2440, 2440fas

Linear Technology Corporation

1630 McCarthy Blvd., Milpitas, CA 95035-7417

©LINEAR TECHNOLOGY CORPORATION 2002

LT/TP 0105 REV A • PRINTED IN USA

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PART NUMBER

DESCRIPTION

COMMENTS

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1.45

LTC2420LTC2424/

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1.2ppm Noise, 8ppm INL, Pin Compatible with LTC2400/

LTC2428

LTC2404/LTC2408

SoftSpan is a trademark of Linear Technology Corporation.

Figure 23. Bridge Reversal Eliminates 1/f Noise and Offset Drift of a Low Noise, Non-autozeroed, Bipolar Amplifier.

Circuit Gives 14nV Noise Level or 19 Effective Bits Over a 10mV Span

0.1

µF

10

µF

4

LTC2440

2440 F22

+7V

LT1461-5

1k 0.1%

10

Ω

100

Ω 0.1%

0.047

µF

1

µF

1k 0.1%

10

Ω

0.047

µF

1

µF

+

–

–

+

2X LT1677

2X SILICONIX SI9801

5,6,7,8

100k

100k

TOP_N

TOP_P

1

3

2

5,6,7,8

4

100k

100k

BOTTOM_N

BOTTOM_P

1

3

2

4

TYPICAL APPLICATIO S