RATIOMETRIC VOLTAGE TRANSMITTER
FEATURES
•
Supply Voltage 5V±5% (Ratio Range)
±
•
Wide Operating Temperature Range:
–40°C...+100°C
•
Ratiometrical Current Source for
Transducer Excitation
•
Instrumentation Amplifier Input
•
Voltage Output Driver
Open Collector:
V
OUT
= 0.5–4.5V
I
OUT
= +10mA
•
Adjustable Gain, Offset, and Output
Voltage Range
•
Small Package Dimensions: SO8
•
Low Cost
AM417
GENERAL DESCRIPTION
The AM417 is a low cost ratiometrical voltage
transmitter, designed for flexible bridge input
signal conditioning. The IC contains a ra-
tiometric current source for transducer excita-
tion, a high accuracy instrumentation amplifier
for differential input signals, and a voltage out-
put driver. Gain, offset, and output voltage
range are adjustable by external resistors. The
voltage output stage is designed as an open col-
lector stage. The output current is +10mA. A
simple current limitation is possible by adding
an external resistor. With its functional blocks
and possibilities to adjust all important pa-
rameters for sensor calibration, the small pack-
age dimensions (SO8), and the low costs the
AM417 is ideally suited for automotive sensor
interface applications.
APPLICATIONS
•
Industrial Process Control
•
Automotive Applications
•
Sensor Transmitter
DELIVERY
•
DIL8 packages (samples)
•
SOP8 packages
•
Dice on 5“ blue foil
BLOCK DIAGRAM
AM417
IB
IN+
IN−
I
BR
9R
V
CC
8
VCC
2
4
IA
5
3
OP
1R
Output
Stage
7
VOUT
RB
6
1
GND
VR
Figure 1
analog microelectronics
Analog Microelectronics GmbH
An der Fahrt 13, D – 55124 Mainz
Internet: www.analogmicro.de
Phone: +49 (0)6131/91 073 – 0
Fax:
+49 (0)6131/91 073 – 30
E–Mail: info@analogmicro.de
April 99
1/6
Rev. 2.1
AME [ ANALOG MICROELECTRONICS ]
