Precision amplifier for bridge circuits
AM457
PRINCIPLE FUNCTION
Adjustable amplification of differential voltage signals (±5 to
±100mV
FS)
to an adjustable, ratiometric output voltage of between
0.2 and Vcc-0.2Volt with a diagnostic unit
V
CC
= 5V
±
5%
Differential input
voltages
( 5... 100mV FS)
Diagnostic unit
AM457
e.g. V
OUT
= 0.2...V
CC
-0.2V
(adjustable)
e.g. 0.5...4.5V
ratiometric
I
out
= 2mA
TYPICAL APPLICATIONS
•
Precision amplifiers for bridge circuits with
low sensitivity:
for ceramic measurement cells
for DMS sensing elements
for GMR sensing elements
•
Sensor amplification with functional control
analog microelectronics
Analog Microelectronics GmbH
An der Fahrt 13, D – 55124 Mainz
Internet: www.analogmicro.de
Phone:
Fax:
Email:
+49 (0)6131/91 073 – 0
+49 (0)6131/91 073 – 30
info@analogmicro.de
May 2005
1/10
Rev. 2.2
AME [ ANALOG MICROELECTRONICS ]
