Features
- Bridge Measurement
- Two full Wheatstone bridges (ZSSC4165D-01)
- One full bridge + one half-bridge branch (ZSSC4165D-05)
- Two independent Wheatstone bridges (ZSSC4165D-06)
- Temperature Compensation
- External P/N junction or internal PTAT (ZSSC4165D-01)
- Internal PTAT only (ZSSC4165D-05)
- External RTDs (PTC) or internal PTAT (ZSSC4165D-06)
- A/D Conversion Resolution
- 14 to 18 bits (ZSSC4165D-01)
- 14 bits (ZSSC4165D-05)
- Up to 18 bits (ZSSC4165D-06)
- Sample Rate
- Up to 0.95kHz (ZSSC4165D-01)
- Up to 1.16kHz (ZSSC4165D-05)
- Up to 1.00kHz (ZSSC4165D-06)
- Functional Safety
- Not specified (ZSSC4165D-01)
- Supports ASIL B (ZSSC4165D-05)
- Not specified (ZSSC4165D-06)
- Temperature Sensor Inputs
- 2 external diodes + internal (ZSSC4165D-01)
- Internal only (ZSSC4165D-05)
- External RTDs + internal (ZSSC4165D-06)
- Bridge Sensor Diagnostics
- Full bridge connection checks (ZSSC4165D-01)
- Full and half-bridge diagnostics (ZSSC4165D-05)
- Full bridge diagnostics (ZSSC4165D-06)
- ADC Features
- Flexible input range, auto-zero compensation (ZSSC4165D-01)
- Optimized for single bridge + branch (ZSSC4165D-05)
- Flexible input range, auto-zero compensation (ZSSC4165D-06)
Description
The ZSSC4165D is a high-performance CMOS IC for precise amplification and correction of Wheatstone bridge sensor signals. With digital compensation for offset, drift, and nonlinearity, it delivers excellent accuracy and reliability. Various self-supervision mechanisms allow monitoring for correct functionality during operation. Integrated non-volatile memory and digital calibration reduce assembly costs and eliminate external trimming. Focused for automotive use, the ZSSC4165D offers robust protection, excellent EMC, and easy calibration via I²C or OWI interface, making it the most efficient, cost-effective solution for sensor signal processing.
An extension to ZSSC4161D and ZSSC4162D, the ZSSC4165D offers measuring up to two independent Wheatstone bridges.
The ZSSC4165D comes with three different product derivatives:
The ZSSC4165D-01 is optimized for SENT output interface and offers measurement of two Wheatstone bridges and temperature compensation with an external P/N junction or internal temperature source. Bridge input signal amplification up to 200, A/D conversion up to 18 bits, and sample rates up to 0.95kHz.
The ZSSC4165D-05 is optimized for SENT output interface and offers measurement of one Wheatstone bridge and additional measurement of one-half bridge branch of the same Wheatstone bridge, and temperature compensation with an internal temperature source. Bridge input signal amplification up to 200, A/D conversion with 14 bits, and sample rates up to 1.16kHz. Operation in functional safety systems up to ASIL B is supported.
The ZSSC4165D-06 is optimized for SENT output interface and offers measurement of two independent Wheatstone bridges and temperature compensation with external RTDs (PTC) or an internal temperature source. Bridge input signal amplification up to 200, A/D conversion up to 18 bits, and sample rates up to 1.00kHz.
Parameters
| Attributes | Value |
|---|---|
| Function | Resistive SSC |
| Automotive Qual. | Yes |
| Supply Voltage (V) | 4.5 - 5.5, 4.75 - 5.25 |
| Input Type | Dual-bridge, Dual-Bridge, Temperature Diode, PTC, NTC |
| Interface | SENT, I2C, SENT, ZACwire™, I2C |
| Adj. Analog Gain | 1 - 200, 2.1 - 200 |
| Resolution (bits) | 14, 18 |
| Sample Rate Max (KHz) | 0.9, 1.16 |
| Temp. Range (°C) | -40 to +150°C, 0 to +70°C |
Application Block Diagrams
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Automotive Sensor with CAN/LIN Interface
Automotive sensor system offers accuracy, flexibility, and reliable performance with SSC, MCU, LIN/CAN support.
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Additional Applications
- Dual single-ended pressure measurement with optional media temperature
- Differential pressure with optional medium temperature (e.g., exhaust systems)
- Flow and temperature measurement for gas or fluids with the differential pressure method