
Zentrum Mikroelektronik Dresden AG
Brief Description
ZMD31150 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 a 16-bit RISC micro-controller running a correction algorithm with calibration coefficients stored in an EEPROM.
FEATUREs
• Digital compensation of sensor offset,
sensitivity, temperature drift and non-linearity
• Adjustable to nearly all bridge sensor types,
analog gain: 420, over all gain: up to 2000
• Output options: ratiometric analog voltage
output (5-95% in maximum, 12.4bit resolution)
or ZACwireTM (digital one-wire-interface)
• Temperature compensation: internal or
external diode, bridge resistance, thermistor
• Sensor biasing by voltage or constant current
• Sample rate up to 7.8kHz
• High voltage protection up to 33V
• Reverse polarity and short circuit protection
• Wide operation temperature –40...+150°C
• Supply voltage 4.5...5.5V
• Traceability by user-defined EEP entries
• Several safety- and diagnostic functions