NJM2729 Просмотр технического описания (PDF) - Japan Radio Corporation

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NJM2729

Precision Operational Amplifier

Japan Radio Corporation  

NJM2729

●Differential Amplifier

Differential amplifier (see below Fig.3) is used in high accuracy circuit to improve common mode rejection ratio (CMR).

A matching between the ratio R1/R2 = R3/R4 and R1=R3 makes the high CMR.

For example, acceptable error range to obtain CMR of 130dB or more is about 0.1ppm.

R2

R1

R3

R4

V+

2

7

−

NJM2729

6

3+

4

V-

Fig.3 Differential Amplifier

- 18 -

[CAUTION]

The specifications on this data book are only given for

information, without any guarantee as regards either

mistakes or omissions. The application circuits in this

data book are described only to show representative

usages of the product and not intended for the

guarantee or permission of any right including the

industrial rights.

E1

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