Brief Description
The ZMD31012 consists of two ZMD31010 dies in a standard SSOP14 packages. ZMD31012 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 compensation can be enabled for temperature coefficients of gain or offset or bridge linearity. ZMD31012 communicates via ZMD’s ZACwireTM serial interface to the host computer and is easily mass calibrated in a Windows® environment.

FEATUREs two ZMD31010
• Separate digital compensation of sensor offset, sensitivity,
   temperature coefficient and non-linearity
• Accommodates differential sensor signal spans from 1.2mV/V
   to 60mV/V for two inputs
• Dual ZACwireTM one-wire interface
• Internal temperature compensation reference
   via bandgap PTAT*
• Optional sequential output of both temperature and bridge
   readings two ZACwireTM digital output
• Output options: ratiometric analog voltage, absolute analog
   voltage, digital one-wire-interface
• Supply voltage 2.7V to 5.5V, with external JFET 5.5V to 30V
• Current consumption 2mA
• Operation temperature -50°C to +150°C
• Fast response time: 1ms
• High voltage protection up to 30V with external JFET
• Chopper stabilized true differential ADC
• Buffered and chopper stabilize output DAC
*Proportional to absolute temperature