AM457

www.DataSheet.co.kr 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 VCC = 5V ± 5% Differential input voltages ( 5... 100mV FS) Diagnostic unit AM457 e.g. VOUT = 0.2...VCC-0.2V (adjustable) e.g. 0.5...4.5V ratiometric Iout = 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 [email protected] May 2005 1/10 Rev. 2.2 Datasheet pdf - http://www.DataSheet4U.net/ www.DataSheet.co.kr Precision amplifier for bridge circuits TABLE OF CONTENTS Features Block diagram General description Electrical specifications Circuit Description of functions Example application Block diagram and pinout Delivery options Further reading AM457 3 3 3 4 5 6 7 9 10 10 TABLE OF FIGURES AND TABLES Table 1: Specifications Table 2: Circuit Table 3: Pin configuration Figure 1: Block diagram Figure 2: Schematic circuit diagram for resistance bridges with low sensitivity Figure 3: Block diagram of AM457 Figure 4: AM457 Pin out Figure 5 : SOP 8 Package dimensions 4 5...