CS3014_07 Datasheet, PDF (1/8 Pages) Cirrus Logic – Low-power / Low-voltage Precision Amplifier

8/27/07
CS3014
Low-power / Low-voltage Precision Amplifier
Features & Description
‰ 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
(Top View)
Out A 1
-In A 2
+In A 3
V- 4
-A+
+B-
8 V+ _{OUT A 1}
7 Out B -IN A 2
6 -In B ^{+IN A 3}
5 +In B
V- 4
8-Lead SOIC
1. Must not be connected.
2. Connect thermal die pad to V-.
Exposed
TDhieerPmaadl₂
A
–+
Exposed
Thermal
Die Pad
+B–
8 V+
7 OUT B
6 -IN B
5 +IN B
QFN-8
1000
100
10
1
0.01
0.1
1
Frequency (Hz)
Noise vs. Frequency (Measured)
300
200
100
0
-100
-200
10 ^-300
0 1 2 3 4 5 6 7 8 9 10
Time (sec)
0.01 Hz to 10 Hz Noise Performance
Cirrus Logic, Inc.
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2007
(All Rights Reserved)
AUG ‘07
DS711F1