INDUSTRIAL VOLTAGE AMPLIFIER IC

AM401

analog microelectronics

Mars 2006

Analog Microelectronics GmbH

Phone:

+49 (0)6131/91 073 – 0

An der Fahrt 13, D – 55124 Mainz

Fax:

+49 (0)6131/91 073 – 30

Rev. 2.3

Internet: http://www.analogmicro.de

Email:

info@analogmicro.de

APPLICATIONS

Application 1 – Differential input signal, voltage output signal of 0...5/10V

With applications which require an output voltage of 0...5/10V the pin used to configure the

instrumentation amplifier offset (ZA) is connected to the IC’s Ground. Gain G is set using the two

()

2

1

1

R

R

G

G

G

G

IA

OP

IA

+

=

=

(2)

If no offset voltage is present, the transfer function of the output voltage (Gl.1) is:

R

R

V

GV

OUT

IA

IN

1

2

1

=−

Example 1:

Input voltage (differential) of 0...50mV and output voltage range of 0...10V

Example 2:

Input voltage (differential) of 0...100mV and output voltage range of 0...5V