Brief Description
ZMD31020 is a CMOS integrated circuit for highlyaccurate amplification and sensor-specific correction of bridge sensor signals. The device provides digital compensation of sensor offset, sensitivity, temperature drift and non-linearity by a 16-bit RISC micro controller running a correction algorithm.
ZMD31020 accommodates nearly all piezo-resistive bridge sensor types.
The bi-directional digital I2C interface can be used for a simple PC-controlled one-shot calibration procedure, in order to program a set of calibration coefficients into an on-chip EEPROM. Thus a specific sensor and a ZMD31020 are mated digitally: fast, precise and without the cost overhead associated with trimming by external devices or laser.
ZMD31020 has been designed for industrial and consumer applications and is specifically suited for most pressure sensors.

FEATUREs
• Digital compensation of sensor offset, sensitivity,
   temperature drift and non-linearity
• Adjustable to nearly all piezo-resistive bridge
   sensor types
• Digital one-shot calibration: quick and precise
• Selectable temperature compensation reference:
   internal or external diode
• Output options: 0...5V analog ratiometric voltage
   or 12 bit digital I2C interface
• Product traceability by user-defined EEPROM
   entries
• Operation temperature range, depending on
   product version, up to –40...+125°C
• Supply voltage +4.5...+5.5V
• Sampling rate ≥100Hz
• Available in SSOP14 or as die