Brief Description
The ZMD21013 is optimized for low-voltage and low-power multiple resistive bridge sensor applications, such as batteryoperated consumer or industrial products. The ZMD21013 provides programmable amplifi cation and analog-to-digital conversion (ADC) of the sensor signal input with an optional temperature measurement output. This standard product is applicable to almost any one, two, or three dimensional detection devices.

FEATUREs
• Programmable analog-to-digital conversion
   of amplifi ed resistive sensor input signals
• Low-power (average 25µW), high-sensitivity,
   multi-channel sensor interface IC
• 3-channel sensor-bridge input multiplexer
• Completely ratiometric systems
• Inherent temperature measurement mode
• Low-noise SC amplifi er with offset compensation
   and adaptive operational amplifi er biasing
• Industrial and consumer temperature range
   (-25°C to +85°C)
• Internal auto-zero mode
• Voltage-driven (switched or static) bridge mode
• On-chip EEPROM and RC oscillator

APPLICATIONs and Examples
• Acceleration measurement
• Compass functions
• Density measurement (differential pressure analysis)
• Altimeter and barometer (watches, mobile devices)
• Flow and velocity measurement
• Pressure measurement (fl uids, gases)
• Temperature measurement