特長
- Digital compensation of sensor offset, sensitivity, temperature drift, and nonlinearity
- Programmable analog gain and digital gain; accommodates bridges with spans <1mV/V and high offset
- Many diagnostic features on-chip (e.g., EEPROM signature, bridge connection checks, bridge short detection, power loss detection)
- Independently programmable high and low clipping levels
- 24-bit customer ID field for module traceability
- Internal temperature compensation reference (no external components)
- Option for external temperature compensation with the addition of a single diode
- Output options: rail-to-rail ratiometric analog voltage (12-bit resolution), absolute analog voltage, ZACwire™ digital one-wire interface
- Fast power-up to data out response, output available 5ms after power-up
- Current consumption depends on programmed sample rate and mode: 1mA down to 300μA (typ.)
- Fast response time: 1.4ms typical
- High voltage protection: ≤30V with external JFET
- AEC-Q100 qualified
ZSSC3015 - Application Circuit
説明
The ZSSC3015 RBicdLite-Auto™ sensor signal conditioner IC is adjustable to nearly all piezoresistive bridge sensors. Measured and corrected bridge values are provided at the Sig™ pin, which can be configured as an analog voltage output or as a one-wire serial digital output. The ZACwire™ digital one-wire interface (OWI) can be used for a simple PC-controlled calibration procedure to program a set of calibration coefficients into an on-chip EEPROM. The calibrated ZSSC3015 and a specific sensor are mated digitally: fast, precise, and without the cost overhead associated with trimming by external devices or laser. Integrated diagnostics functions make the ZSSC3015 particularly well-suited for automotive applications.
