特長
- Adjustable to nearly all resistive bridge sensor types, analog gain of 420, overall gain up to 1680
- Enhanced sample rate up to 7.8 kHz
- High ADC resolution 15/16 bit
- Safety functionality sensor connection
- Internal temperature compensation
- Digital compensation of sensor offset, sensitivity, temperature drift and non-linearity
- Output options: ratiometric analog voltage output (5% to 95% maximum, 12.4 bit resolution) or ZACwire™ (digital one-wire-interface)
- Sensor biasing by voltage
- High voltage protection up to 33V
- Supply current: max. 5.5mA
- Reverse polarity and short circuit protection
- Operation temperature range as wide as -40°C to +150°C
- Traceability by user-defined EEPROM entries
説明
The ZSSC3138 is a member of the ZSSC313x product family of CMOS integrated circuits designed for automotive and industrial sensor applications. All family members are well suited for highly accurate amplification and sensor-specific correction of resistive bridge sensor signals. An internal 16-bit RISC microcontroller running a correction algorithm compensates sensor offset, sensitivity, temperature drift, and non-linearity of the connected sensor element. The required calibration coefficients are stored by the single-pass calibration procedure in an on-chip EEPROM. The ZSSC3138 offers a maximum analog gain of 420 and two offset compensation features. These fit the requirements of ceramic thick-film-based sensor elements as well as strain gauges perfectly. The high amplification in combination with the offset compensation offers the capability to set up ceramic-thick-film-based sensor applications without laser trimming, which leads to better long-term stability.
パラメータ
| 属性 | 値 |
|---|---|
| Function | Resistive SSC |
| Automotive Qual. | Yes |
| Supply Voltage (V) | 4.5 - 5.5 |
| Input Type | Single-bridge |
| Interface | Ratiometric Voltage, ZACwire™, I2C |
| Adj. Analog Gain | 3 - 3, 7 - 7, 9 - 9, 14 - 14, 26 - 26, 35 - 35, 52 - 52, 70 - 70, 105 - 105, 140 - 140, 210 - 210, 280 - 280, 420 - 420 |
| Resolution (bits) | 16 |
| Sample Rate Max (KHz) | 7.8 |
| Temp. Range (°C) | -40 to +150°C, -40 to 125°C, -40 to 150°C |