Renesas ZSSC3170EA3R

Overview

ZSSC3170EA3R from Integrated Device Technology (IDT) is an AEC-Q100-qualified automotive sensor signal conditioner IC for resistive bridge sensors, featuring 14-bit ADC resolution, ±0.50% FSO accuracy over −40°C to +125°C, LIN 2.1/PWM dual digital output, and on-chip EEPROM for calibration coefficients. It performs digital compensation of offset, gain, temperature drift (2nd order), and nonlinearity (3rd order) in pressure, load, or force sensing systems.

For engineers reviewing the ZSSC3170EA3R datasheet, ZSSC3170EA3R pinout, ZSSC3170EA3R application, or ZSSC3170EA3R equivalent, this page delivers verified technical context, DFN20 package mapping, LIN/PWM interface timing constraints, bridge input span (1.8–267 mV/V), and calibrated accuracy specifications required for automotive sensor module design and end-of-line calibration validation.

Technical Context

The ZSSC3170EA3R implements a two-stage programmable gain amplifier (PGA) with selectable gains from 2× to 420×, enabling full-scale bridge input spans from 1.8 to 267 mV/V while maintaining common-mode input range between 29–65% of VDDA. Its 16-bit RISC microcontroller executes ROM-resident conditioning algorithms using EEPROM-stored coefficients for real-time correction of offset, sensitivity, temperature effects, and nonlinearity.

Dual output paths are supported: LIN 2.1-compliant frames at up to 430 Hz (20 kbit/s channel utilization), and PWM outputs with configurable high-side/low-side switching, 11-bit full-scale resolution, and 1–99% duty cycle control. Internal diagnostics include sensor connection loss detection (20–100 kΩ threshold), short-circuit check, and load-dump protection (±40 V on LIN pin).

Key Specifications

Pinout & Package

Package: RoHS-compliant 20-pin DFN (4 mm × 4 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad (EP). Pin assignment matches ZSSC3170 DFN20 footprint per datasheet Section 4.3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX1452ACM+T and AD8555ARZ, the ZSSC3170EA3R delivers complete automotive-qualified signal chain integration-including LIN PHY, EEPROM, diagnostics, and 3rd-order compensation-in a single DFN20 package, reducing bill-of-materials, validation effort, and PCB footprint for Tier-1 pressure and force sensor modules.

Availability

ZSSC3170EA3R is available at Aetrix Electronics and suitable for automotive pressure sensing, industrial load cell interfaces, brake fluid monitoring, and tire pressure measurement requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for ZSSC3170EA3R 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

Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning solutions for automotive, industrial, and communications markets.

The ZSSC3170 product line was designed specifically for AEC-Q100-compliant automotive bridge sensor applications-delivering integrated LIN/PWM output, on-chip calibration, and robust diagnostics to replace multi-component discrete signal chains in pressure, force, and position sensing modules.

FAQ

What is the maximum bridge input voltage span supported by the ZSSC3170EA3R?

The ZSSC3170EA3R supports a bridge input span from 1.8 mV/V to 267 mV/V, enabled by its programmable gain amplifier with selectable gains from 2× to 420×. This range accommodates low-output strain gauges and high-sensitivity pressure sensors without external amplification. The actual usable span depends on PGA configuration and XZC setting, as defined in Table 2.2 of the ZSSC3170EA3R datasheet.

Does the ZSSC3170EA3R require an external LIN transceiver?

No, the ZSSC3170EA3R integrates a fully compliant LIN 2.1 physical layer, including driver/receiver circuitry, load-dump protection (±40 V), and recessive/dominant level thresholds. No external transceiver is needed-only a single 20 kΩ pull-up resistor to VB is required on the LIN bus. This integration reduces component count and improves EMC robustness in automotive applications using the ZSSC3170EA3R.

What temperature ranges does the ZSSC3170EA3R support, and what is its AEC-Q100 grade?

The ZSSC3170EA3R operates from −40°C to +125°C and is qualified to AEC-Q100 Grade 1. It also supports extended operation up to +150°C for limited duration (1000 hours), as specified in ordering code ZSSC3170EA3R. This makes it suitable for under-hood automotive applications such as intake manifold pressure sensing and brake fluid monitoring where sustained high-temperature reliability is critical for the ZSSC3170EA3R.

How many calibration coefficients can be stored in the ZSSC3170EA3R's EEPROM?

Three EEPROM words are allocated for sensor-specific calibration coefficients-covering offset, sensitivity, temperature drift (2nd order), and nonlinearity (3rd order) correction parameters. Additionally, three more EEPROM words are reserved for optional user data storage. All EEPROM is certified for automotive use with 100 write cycles at +150°C and 15-year data retention, ensuring long-term stability of calibrated performance for the ZSSC3170EA3R.

Can the ZSSC3170EA3R perform temperature compensation using an external diode sensor?

Yes, the ZSSC3170EA3R supports external temperature sensing via diode or RTD inputs on pins VTN1 and VTN2. It provides programmable bias current (10–40 µA) and gain (300–1300 ppm/FS/mV for diodes), enabling accurate media temperature measurement for compensation of bridge sensor drift. This capability is configured via EEPROM and used directly in the on-chip conditioning algorithm-no external circuitry is needed for diode-based temperature compensation in the ZSSC3170EA3R.