Renesas ZSSC4175BE2R

Overview

ZSSC4175BE2R from Renesas Electronics is a dual-channel sensor signal conditioner IC designed for high-accuracy conditioning of thermocouple inputs in automotive and industrial environments. It supports N-type thermocouples, provides cold-junction compensation via internal temperature sensing, delivers ±0.25% FSO accuracy from −40°C to 125°C, operates from 4.75V to 5.25V, and outputs calibrated data via SENT or I²C™ interface.

For engineers reviewing the ZSSC4175BE2R datasheet, ZSSC4175BE2R pinout, ZSSC4175BE2R application, or ZSSC4175BE2R equivalent, key selection criteria include dual thermocouple support, SENT fast/SDM channel capability, 12–16-bit configurable ADC resolution, −40°C to 150°C operating range, and integrated diagnostics for open-circuit and short-circuit detection.

Technical Context

The ZSSC4175BE2R implements a 16-bit RISC microcontroller core for digital compensation of offset, sensitivity, temperature drift, and nonlinearity across two independent voltage-source sensor channels. Its analog frontend includes programmable gain amplification (150–200×), 12–16-bit ADC resolution, and digital zooming for large sensor offset correction (14–18-bit effective resolution).

Dual thermocouple inputs are conditioned with dedicated diagnostics including open/short detection and thermocouple fault reporting. Cold-junction compensation uses an internal temperature sensor, and calibration coefficients-including user-configurable measurement functions-are stored in on-chip NVM rated for automotive reliability.

Key Specifications

Pinout & Package

Package: 4 mm × 4 mm QFN-24, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX1452ACM+T and AD8420ARZ, the ZSSC4175BE2R integrates dual-channel thermocouple conditioning, SENT/I²C™ output, cold-junction compensation, and automotive-qualified NVM in one QFN24 package-reducing PCB area, component count, and calibration overhead by eliminating external processors and trimming components.

Availability

ZSSC4175BE2R is available at Aetrix Electronics and suitable for automotive exhaust monitoring, industrial furnace control, and aerospace hydraulic thermal sensing requiring stable component supply, long-term calibration retention, and SENT-compliant digital output.

Supply support for ZSSC4175BE2R 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 Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC products for automotive, industrial, and IoT applications.

The ZSSC4175BE2R belongs to Renesas' Sensor Signal Conditioner (SSC) product line, engineered specifically for high-accuracy, automotive-qualified conditioning of resistive bridge and voltage-source sensors-including thermocouples-in harsh ECU-embedded environments.

FAQ

What sensor types does the ZSSC4175BE2R support?

The ZSSC4175BE2R supports dual N-type thermocouples as primary inputs, with optional external RTD/NTC connections via TS1/TS2 pins. It uses its internal temperature sensor for cold-junction compensation and includes diagnostics for open-circuit and short-circuit faults on both thermocouple channels. The ZSSC4175BE2R does not support bridge sensors-those are handled by the ZSSC416x series.

Does the ZSSC4175BE2R require external components for basic operation?

No, the ZSSC4175BE2R operates with minimal external components: only decoupling capacitors on VDDA/VDDE and a pull-up resistor on the SENT line (RSENT). It integrates PGA, ADC, 16-bit RISC core, NVM, SENT driver, and I²C™ interface-eliminating need for external op-amps, trimmers, EEPROM, or microcontrollers in typical thermocouple applications.

How is calibration performed for the ZSSC4175BE2R?

Calibration for the ZSSC4175BE2R is performed end-of-line using either the I²C™ interface (SCL/SDA pins) or the One-Wire Interface (OWI) through the DOUT pin. The device executes a one-pass algorithm that writes full 16-bit offset, gain, and nonlinearity coefficients into on-chip NVM. No laser trimming or external DACs are required-the ZSSC4175BE2R handles all compensation digitally.

What is the SENT frame structure supported by the ZSSC4175BE2R?

The ZSSC4175BE2R implements SAE J2716 Rev 3.0 SENT protocol with a 12-bit fast channel for primary thermocouple data and a configurable Serial Data Message (SDM) channel for auxiliary data-such as second thermocouple reading, internal die temperature, or diagnostic status. Frame timing and pulse width modulation comply with automotive EMI requirements.

Is the ZSSC4175BE2R pin-compatible with other devices in the ZSSC416x/ZSSC417x family?

The ZSSC4175BE2R shares the same QFN24 package and core pinout (VDDA, VSSA, VDDE, VSSE, DOUT, SCL, SDA, BR1P/N, BR2P/N, TS1/2, TOP/BOT) with ZSSC4165BE2 and ZSSC4171BE2. However, functional differences-such as dual thermocouple vs. dual bridge input-mean firmware and external sensor connections must be redesigned; it is not a drop-in replacement without system-level validation.