Copyright

© Cirrus Logic, Inc. 2007

(All Rights Reserved)

Cirrus Logic, Inc.

http://www.cirrus.com

8/27/07

CS3014

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

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 CS3004 dual amplifier is designed for precision am-

plification of low-level signals. These amplifiers achieve

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 amplifiers operate with any supply voltage

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

Pin Configurations

CS3014

Exposed

Thermal

Die Pad

V+

OUT B

-IN B

+IN B

OUT A

-IN A

+IN A

V-

8

7

6

5

1

2

3

4

– +

A

–

+

B

Out A

-In A

+In A

V-

V+

Out B

-In B

+In B

1

2

3

4

8

7

6

5

A

B

-

-

+

+

8-Lead SOIC

QFN-8

(Top View)

Exposed

Thermal

1. Must not be connected.

2. Connect thermal die pad to V-.

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

DS711F1