Renesas ZSC31050FID

Overview

ZSC31050FID from Renesas Electronics is a CMOS-based differential sensor signal conditioner IC designed for high-accuracy amplification and digital compensation of resistive bridge sensors (e.g., pressure, force, torque) and temperature signals. It integrates a 16-bit RISC microcontroller executing polynomial correction algorithms to compensate offset, sensitivity, temperature drift, and nonlinearity. Key confirmed specs: ±0.1% FSO accuracy at –25°C to 85°C, 16-SSOP package, 2.7–5.5V supply, 2.5mA typical current consumption, and support for I²C/SPI/ZACwire™ interfaces.

For engineers reviewing the ZSC31050FID datasheet, ZSC31050FID pinout, ZSC31050FID application, or ZSC31050FID equivalent, this page delivers verified technical context, calibrated output options (0–5V, 4–20mA, PWM), real-world application mappings, and validated alternative parts - all grounded in Renesas' official documentation and electrical specifications.

Technical Context

The ZSC31050FID implements a dual-path analog front-end with programmable gain amplifier (PGA) and multiplexer routing bridge, internal diode, or external temperature sensor inputs to a 9–15-bit ADC. Its calibration microcontroller (CMC) executes ROM-stored polynomial correction using EEPROM-programmed coefficients, enabling one-pass PC-controlled calibration without trimming components.

Digital outputs include configurable voltage (0–5V), current (4–20mA), PWM (9–12-bit resolution), and three serial protocols (I²C, SPI, ZACwire™). Sensor excitation is selectable as ratiometric voltage, constant voltage, or constant current, and the device supports AEC-Q100 Grade 0 qualification (–40°C to +125°C).

Key Specifications

Pinout & Package

Package: 16-pin SSOP (Small Outline Package), surface-mount, 5.3mm × 6.2mm footprint, 0.65mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar sensor signal conditioning applications.

Compared with MAX1452ACM+T and AD8422ARZ, the ZSC31050FID delivers full turnkey bridge conditioning - integrating PGA, ADC, correction engine, EEPROM, and multiple output drivers - reducing total solution size by >60% and eliminating firmware development for basic compensation tasks.

Availability

ZSC31050FID is available at Aetrix Electronics and suitable for industrial pressure transmitters, medical blood pressure monitors, and automotive oil pressure sensors requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.

Supply support for ZSC31050FID includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for industrial, automotive, and IoT markets.

The ZSC31050FID belongs to Renesas' ZSC family of highly integrated sensor signal conditioners - engineered specifically to replace discrete analog chains in resistive bridge sensor systems while delivering factory-calibrated accuracy and digital configurability.

FAQ

What is the primary function of the ZSC31050FID in a sensor system?

The ZSC31050FID serves as a complete differential bridge sensor signal conditioner, performing analog amplification, 9–15-bit digitization, and real-time digital compensation of offset, sensitivity, temperature drift, and nonlinearity using an embedded 16-bit RISC microcontroller. The ZSC31050FID eliminates the need for external trimming components and enables one-pass PC calibration via I²C, SPI, or ZACwire™ interfaces - making it ideal for pressure, force, and torque sensing applications.

Does the ZSC31050FID support AEC-Q100 qualification, and what grade applies?

Yes, the ZSC31050FID is AEC-Q100 qualified for Grade 0 (–40°C to +125°C), with de-rated operation up to +150°C depending on product version. This qualification is explicitly documented in the official Renesas datasheet and confirms suitability for automotive under-hood applications such as oil pressure and temperature sensing. The ZSC31050FID meets stress testing requirements including HTOL, TCT, and ESD per AEC-Q100 Rev G.

What output configurations does the ZSC31050FID support, and how are they selected?

The ZSC31050FID supports voltage (0–5V), current (4–20mA), PWM (9–12-bit), I²C, SPI, and ZACwire™ outputs. Configuration is performed by writing to on-chip EEPROM registers via any supported digital interface - no hardware changes required. Output mode, resolution, and timing parameters (e.g., PWM frequency) are fully software-defined. The ZSC31050FID's flexible I/O architecture allows simultaneous use of multiple outputs (e.g., analog voltage + PWM alarm) within a single device.

Can the ZSC31050FID interface with external temperature sensors, and which types are supported?

Yes, the ZSC31050FID supports external temperature compensation via its IR_TEMP pin, accepting silicon diodes (bias current 8–40µA), thermistors, or RTDs. It also offers selectable internal temperature sources: on-chip pn-junction diode or bridge self-heating. The ZSC31050FID's compensation engine uses the chosen temperature source to correct bridge sensitivity and offset drift - a capability confirmed in Section 2.3.5 and Table 1.4.5.1 of the Renesas datasheet.

What is the accuracy specification of the ZSC31050FID, and under what conditions is it guaranteed?

The ZSC31050FID guarantees ±0.1% FSO accuracy over –25°C to +85°C and ±0.25% FSO over –40°C to +125°C, measured with advanced performance supply (VDDA ≥ 4.5V) and ratiometric excitation. These values represent total error including INL, gain, and offset - confirmed in Section 1.4.7.3 of the Renesas datasheet. Accuracy better than 0.5% requires analog output stage calibration; the ZSC31050FID's digital output inherently achieves this without additional steps.