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AM467 Datasheet(PDF) 3 Page - Analog Devices |
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AM467 Datasheet(HTML) 3 Page - Analog Devices |
3 / 9 page Precision amplifier for bridge circuits AM467 analog microelectronics February 2011 Analog Microelectronics GmbH Phone: +49 (0)6131/91 073 – 0 3/9 An der Fahrt 13, D – 55124 Mainz Fax: +49 (0)6131/91 073 – 30 Rev. 1.1 Internet: http://www.analogmicro.de Email: info@analogmicro.de FEATURES • Wide differential input voltage range ( ±5 mV FS...±100 mV FS) • Low offset • Low offset drift • Low input noise • High CMRR: > 120 dB • Wide operating temperature range: – 40 °C... +125 °C • Adjustable span of output signal • Adjustable offset of output signal • Rail-to-rail output stage: VOUT = 0.2 V ... VCC – 0.2 V • Sink/source output • Single ratiometric supply: V CC = 5 V • Integrated EMV protective functions • Overvoltage protection 12 V • Integrated ESD protective functions • Short-circuit-proofing • Small-scale design • Low cost circuit GENERAL DESCRIPTION AM467 is a high-precision integrated amplifier which has been developed as signal condition circuit for small differential input voltages within a range of a few millivolts ( ±5 to ±100 mV FS). The chief component of the IC is a highly accurate, low-noise amplifier circuit which can be adjusted to the sensing elements using an external network of resistors. Offset and span of the output signal are adjustable in the range of 0.2 to Vcc-0.2Volt. The rail-to-rail output makes the IC suitable for the amplification of DMS and piezoceramic sensing elements and GMR measuring cells with respect to the specific calibration network. BLOCK DIAGRAM Figure 1: Block diagram for AM467 AM467 Input- amplifier Biasing Unit Output stage Short circuit protection Current limitation VCC OUT GND 1 4 8 IN+ 3 IN- 2 |
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