ZSSC3123 Overview
The ZSSC3123 is a CMOS integrated circuit for accurate capacitance-to-digital conversion and sensor-specific correction of capacitive sensor signals. Digital pensation of sensor offset, sensitivity, and temperature drift is acplished via an internal digital signal processor running a correction algorithm with calibration coefficients stored in a non-volatile EEPROM. The ZSSC3123 is configurable for capacitive...
ZSSC3123 Key Features
- Maximum target input capacitance: 260pF
- Sampling rates as fast as 0.7ms at 8-bit resolution; 1.6ms at
- Digital pensation of sensor: piece-wise 1st and 2nd order
- Digital pensation of 1st and 2nd order temperature gain and offset drift
- Internal temperature pensation reference (no external ponents)
- Programmable capacitance span and offset
- Layout customized for die-die bonding with sensor for lowcost, high-density chip-on-board assembly
- Accuracy as high as ±0.25% FSO at -40°C to 125°C, 3V, 5V, Vsupply ±10% (see data sheet section 5 for restrictions)
- Minimized calibration costs: no laser trimming, one-pass calibration using a digital interface
- Wide capacitance range to support a broad portfolio of different sensor elements
