Copyright

 Cirrus Logic, Inc. 2009

(All Rights Reserved)

Cirrus Logic, Inc.

http://www.cirrus.com

CS3003

Precision Low-voltage Amplifier



Low Offset:

–10

μV Max.



Low Drift:

–0.05

μV/°C Max.



Low Noise:

– 17 nV/

√Hz



Open-loop Voltage Gain:

– 150 dB Typ.



Rail-to-Rail Inputs



Rail-to-Rail Output Swing

– to within 10 mV of supply voltage



1.0 mA Supply Current



Slew rate:

–0.25 V/

μs

Applications



Thermocouple/Thermopile Amplifiers



Load Cell and Bridge Transducer Amplifiers



Precision Instrumentation



Battery-powered Systems

Description

The CS3003 single amplifier is designed for precision

amplification of low-level signals. This amplifier achieves

excellent offset stability, high open loop gain, and low

noise. The devices also exhibit excellent CMRR and

PSRR. The common mode input range includes the sup-

ply rails. The amplifier operates with any supply voltage

from 2.7 V to 5 V (±1.35 V to ±2.50 V).

Pin Configuration

8-Lead SOIC

CS3003

(Top View)

1. Must not be connected.

NC

-IN

+IN

V-

NC

V+

Output

NC

-

+

1

1

1

1

2

3

4

8

7

6

5

1

10

100

1000

0.01

0.1

1

10

Frequency (Hz)

-200

-150

-100

-50

0

50

100

150

200

0

1

23

4

5

67

89

10

Time (sec)

Noise vs. Frequency (Measured)

0.01 Hz to 10 Hz Noise Performance

OCT ‘09

DS735F3