特長
- Digital compensation of sensor offset, sensitivity, temperature drift, and non-linearity
- Programmable analog and digital gain settings; accommodates bridge spans <1mV/V and high offset
- On-chip diagnostic features, including EEPROM signature verification, bridge connection checks, bridge short detection, and power-loss detection
- Independently programmable high and low clipping levels
- 24-bit customer ID field for module traceability
- Digital calibration and configuration via the one-wire interface
- Internal temperature compensation reference eliminates the need for external components
- Optional external temperature compensation with a single diode
- Output options: rail-to-rail ratiometric analog voltage (12-bit resolution), absolute analog voltage, or digital one-wire interface
- Supply voltage: 2.7V to 5.5V; 5.5V to 30V with an external JFET
- Fast power-up to data output response; output available 5ms after power-up
- Current consumption depends on the programmed sample rate: 1mA to 250µA (typical)
説明
The ZSC31015 is an RBicdLite™ 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 performed by an internal digital signal processor running a correction algorithm with calibration coefficients stored in nonvolatile EEPROM. The ZSC31015 is compatible with nearly all piezoresistive bridge sensors.
Measured and compensated bridge values are provided through the SIG™ pin, which can be configured as either an analog voltage output or a one-wire digital serial output. The digital one-wire interface enables a simple PC-controlled calibration procedure for programming calibration coefficients into the on-chip EEPROM.
Digital mating of the ZSC31015 and a specific sensor is fast and precise, eliminating the cost and complexity associated with external trimming devices or laser trimming. Integrated diagnostic functions make the ZSC31015 particularly well-suited for automotive applications.
パラメータ
| 属性 | 値 |
|---|---|
| Function | Resistive SSC |
| Automotive Qual. | No |
| Supply Voltage (V) | 2.7 - 30 |
| Input Type | Single-bridge |
| Interface | Ratiometric Voltage, Absolute Voltage, ZACwire™ |
| Adj. Analog Gain | 6 - 6, 24 - 24, 48 - 48, 96 - 96 |
| Resolution (bits) | 14 |
| Sample Rate Max (KHz) | 1 |
| Temp. Range (°C) | -25 to +85°C, -25 to 85°C, -40 to +125°C, -40 to 125°C, -50 to +150°C, -50 to 150°C |
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