VOLTAGE TRANSMITTER IC

AM411

analog microelectronics

April 99

Analog Microelectronics GmbH

Phone:

+49 (0)6131/91 073 – 0

1/6

An der Fahrt 13, D – 55124 Mainz

Fax:

+49 (0)6131/91 073 – 30

Rev. 2.1

Internet: www.analogmicro.de

E–Mail:

info@analogmicro.de

FEATURES

• Wide Supply Voltage Range: 6...35V

• Wide Operating Temperature Range:

–40°C...+85°C

• Voltage Reference: 5V

• Instrumentation Amplifier Input

(Reversible Polarity)

• Operational Amplifier Input

• Adjustable Gain and Offset

• Adjustable Output Voltage Range:

0.5...4.5V, 0...5/10V, other

• Protection Against Reverse Polarity

• Output Current Limitation

APPLICATIONS

• Industrial Process Control

• Sensor Transmitter (e.g. pressure)

• Programmable Voltage Source

GENERAL DESCRIPTION

The AM411 is a monolithic voltage transmitter,

designed for flexible bridge input signal condi-

tioning. The integrated circuit is ideally suited

for a wide variety of transducers with an differ-

ential output signal. It contains a high accuracy

instrumentation amplifier for differential input

signals, an operational amplifier output stage,

and a 5V reference. Output range and gain are

adjustable by external resistors. Using the inter-

nal instrumentation amplifier the AM411 is a

standard sensor transmitter with the possibility

to indicate an over range signal. With the inter-

nal connected operational amplifier input this

IC can be used as an adjustable voltage–to–

voltage transmitter.

DELIVERY

• DIL8 packages (samples)

• SOP8 packages

• Dice on 5“ blue foil

BLOCK DIAGRAM

Reference Voltage

IA

GAIN

VOUT

VREF

IN+

IN

−

1

2

8

4

3

AM411

7

GND

VCC

5

ZA

6

Output

Stage

Figure 1