DESCRIPTION

ZMD31010 , part of the RBicLite™ family, is a CMOS integrated circuit, which enables easy and precise calibration of resistive bridge sensors via EEPROM.  When mated to a resistive bridge sensor, it will digitally correct offset and gain with the option to correct offset and gain coefficients and linearity over temperature.  A second order compensation can be enabled for temperature coefficients of gain and offset or bridge linearity.  RBicLite™ communicates via ZMD's ZACwire™ serial interface to the host computer and is eaily mass calibrated in a Windows® environment.  Once calibrated, the output SIG™ pin can provide selectable 0 to 1V, rail-to-rail ratiometric analog output, or digital serial output of bridge data with optional temperature data.

FEATURES

• Digital compensation of sensor offset, sensitivity, temperature drift and non-linearity
• Accommodates differential sensor signal spans from 1.2mV/V to 60mV/V
• ZACwire™ one-wire interface
• Internal temperature compensation and detection via bandgap PTAT (proportional to absolute temperature)
• Optional sequential output of both temperature and bridge readings on ZACwire™ digital output
• Output options: rail-to-rail analog output voltage, absolute analog voltage, digital one-wire-interface
• Supply voltage 2.7 to 5.5V, with external JFET 5.5V to 30V
• Current consumption, depending on adjusted sample rate: 0.25 mA to 1mA
• Wide operational temperature: -50°C to +150°C
• Fast response time 1ms (typical)
• High voltage protection up to 30V with external JFET
• Chopper-stabilized true differential ADC
• Buffered and chopper-stabilized output DAC

BENEFITS

• No external trimming components required
• PC-controlled configuration and calibration via digital bus interface - simple, low cost
• High accuracy (±0.1% FSO @ -25 to +85°C; ±0.25% FSO @ -40 to +125°C)
• Single pass calibration - quick and precise
• Suitable for battery-powered applications
• Small SOP8 package

DOWNLOAD

• Data sheet:

  Download zmd31010.pdf