UNIVERSAL AMPLIFIER IC

AM400

analog microelectronics

October 2005

Analog Microelectronics GmbH

Phone:

+49 (0)6131/91 073 – 0

20/21

An der Fahrt 13, D – 55124 Mainz

Fax:

+49 (0)6131/91 073 – 30

Rev.: 4.2

Internet: http://www.analogmicro.de

Email:

info@analogmicro.de

EXAMPLE APPLICATIONS

• Signal conditioning for ceramic and piezoresistive pressure sensing elements with an optional

external processor for error compensation

• Application as a converter IC

• Conditioning of signals referenced to ground (protected output stage, impedance converter, etc.)

V

AM400

Sensor supply

Voltage or current

µP

0/4...20mA

0...5/10V

Figure 13:

Application for ceramic and piezoresistive pressure sensors and an external

microcontroller

5V

AM400

6...35V

0/4...20mA

CAV424

0...5/10V

C

X1

C

X2

Figure 14:

Application as a converter IC together with CAV424 for the measurement of capacitive

V424 signals

AM400

6...35V

0/4...20mA

V

Others

Protection against

short-circuiting and

reverse polarity

Figure 15:

Application for input signals referenced to ground (protected output stage,

impedance converter, etc.)