Copyright

© Cirrus Logic, Inc. 2007

(All Rights Reserved)

Cirrus Logic, Inc.

http://www.cirrus.com

8/27/07

CS3013

Low-power / Low-voltage Precision Amplifier

Low Offset:

–10

µV Typ.

Low Drift:

–0.05

µV/°C Max.

Low Noise:

– 22 nV/

√Hz

Open-loop Voltage Gain:

– 135 dB Typ.

Rail-to-Rail Inputs

Rail-to-Rail Output Swing

– to within 20 mV of supply voltage

0.5 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 CS3013 single amplifier is designed for precision

amplification of low-level signals. These amplifiers

achieve excellent offset stability, high open loop gain,

and low noise. The device also exhibits excellent CMRR

and PSRR. The common mode input range includes the

supply rails. The amplifiers operate with any supply volt-

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

Pin Configurations

NC

-IN

+IN

V-

NC

V+

Output

NC

1

2

3

4

8

7

6

5

-

+

1

1

1

8-Lead SOIC

QFN-8

CS3013

(Top View)

Exposed

Thermal

Die Pad

NC

V+

Output

NC

NC

-IN

+IN

V-

8

7

6

5

1

2

3

4

–

+

1

1

1

2

1. Must not be connected.

2. Connect thermal die pad to V-.

Exposed

Thermal

Noise vs. Frequency (Measured)

0.01 Hz to 10 Hz Noise Performance

1

10

100

1000

0.01

0.1

1

10

Frequency (Hz)

-300

-200

-100

0

100

200

300

012

34

567

89

10

Time (sec)

AUG ‘07

DS736F1