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ZMD31015AIFT Datasheet(PDF) 1 Page - Zentrum Mikroelektronik Dresden AG |
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ZMD31015AIFT Datasheet(HTML) 1 Page - Zentrum Mikroelektronik Dresden AG |
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1 / 2 page  Features • Digital compensation of sensor offset, sensitivity, temperature drift and non-linearity • Programmable analog gain and digital gain; accommodates bridges with spans < 1mV/V and high offset • Many diagnostic features on chip (e.g., EEPROM signature, bridge connection checks, bridge short detection, power loss detection) • Independently programmable high and low clipping levels • 24-bit customer ID field for module traceability • Digital calibration and configuration via one-wire interface – quick and precise • Internal temperature compensation reference (no external components) • Option for external temperature compensation with addition of single diode • Output options: rail-to-rail ratiometric analog voltage (12-bit resolution), absolute analog voltage, digital one-wire-interface • Supply voltage 2.7 to 5.5V; with external JFET, 5.5 to 30V • Fast power-up to data out response; output available 5ms after power up • Current consumption depends on programmed sample rate; 1mA down to 250µA (typical) • Operation temperature: –50°C to +150°C • Fast response time: 1ms (typical) • High voltage protection up to 30V with external JFET • No external trimming components required • High accuracy (±0.1% FSO @ -25 to 85°C; ±0.25% FSO @ -50 to 150°C) Application Circuit Brief Description The RBicdLiteTM is a CMOS integrated circuit for highly accurate amplification and sensor-specific correction of bridge sensor signals. Digital compensation of sensor offset, sensitivity, temperature drift and non-linearity is accomplished via an internal digital signal processor running a correction algorithm with calibration coefficients stored in a non-volatile EEPROM. The Analog Mixed Signal Company ZMD31015 RBicdLite™ Low-Cost Sensor Signal Conditioner with Diagnostics P R E L I M I N A RY The RBicdLiteTM is adjustable to nearly all piezo-resistive bridge sensors. Measured and corrected bridge values are provided at the SIGTM pin, which can be configured as an analog voltage output or as a one-wire serial digital output. The digital one-wire interface can be used for a simple PC- controlled calibration procedure to program a set of calibration coefficients into an on-chip EEPROM. The calibrated RBicdLiteTM and a specific sensor are mated digitally: fast, precise, and without the cost overhead associated with trimming by external devices or laser. Integrated diagnostics functions make the RBicdLiteTM particularly well suited for automotive applications. • The RBicdLiteTM Development Kit is available – includes the Development Board, SOP8 samples, software, and documentation. • Support for industrial mass calibration is available • Quick circuit customization possible for large production volumes Typical RBicdLiteTM Application Circuit |
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