Renesas ZSC31010CIG1-T

Overview

ZSC31010CIG1-T from Integrated Device Technology (IDT) is a precision sensor signal conditioner IC for resistive bridge sensors, featuring 14-bit ADC resolution, ±0.1% FSO accuracy over –25°C to +85°C, and digital compensation of offset, gain, temperature drift, and non-linearity. It supports rail-to-rail ratiometric analog output (0–VDD), absolute 0–1 V output, or ZACwire™ one-wire digital interface - deployed in industrial pressure and load cell systems requiring high-accuracy analog conditioning with minimal external components.

For engineers reviewing the ZSC31010CIG1-T datasheet, ZSC31010CIG1-T pinout, ZSC31010CIG1-T application, or ZSC31010CIG1-T equivalent, key selection criteria include its chopper-stabilized differential AFE, EEPROM-based second-order temperature compensation, 1 ms typical response time, and SOP8 package compatibility with high-voltage operation (up to 30 V with external JFET).

Technical Context

The ZSC31010CIG1-T integrates a chopper-stabilized true-differential 14-bit ADC, bandgap-based PTAT temperature sensing, and a programmable DSP core with on-chip EEPROM for storing calibration coefficients. Its analog front-end accepts bridge inputs from 3 mV/V to 105 mV/V and supports configurable analog gain (6/12/24/48) to optimize resolution across sensor sensitivities.

Digital output uses IDT's proprietary ZACwire™ one-wire interface (OWI) for host communication, enabling PC-based mass calibration and sequential readout of bridge and temperature data. The output stage includes a buffered 11-bit DAC supporting ratiometric (0–VDD) or absolute (0–1 V) analog voltage modes, with ≤10 mV absolute error and 2.2 mA max drive capability.

Key Specifications

Pinout & Package

SOP8 (150 mil) package - 5.0 mm × 4.0 mm body, 1.27 mm pitch, gull-wing leads, RoHS-compliant. Pin 1 marked by notch or dot.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX1452AESA+ and AD8422ARZ, the ZSC31010CIG1-T uniquely combines 14-bit precision, on-chip temperature sensing, EEPROM-based second-order compensation, and ZACwire™ one-wire configuration - delivering turnkey bridge calibration in a single SOP8 device without external support circuitry.

Availability

ZSC31010CIG1-T is available at Aetrix Electronics and suitable for industrial pressure transducers, automotive load cells, white goods level sensors, and office automation force sensors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ZSC31010CIG1-T 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 communications, computing, and industrial markets.

The ZSC31010CIG1-T belongs to IDT's RBicLite™ family of sensor signal conditioners - designed specifically to simplify high-accuracy bridge sensor calibration in cost-sensitive, high-volume applications such as building automation and appliance control.

FAQ

What is the maximum operating temperature range supported by the ZSC31010CIG1-T?

The ZSC31010CIG1-T is rated for continuous operation from –50°C to +150°C, validated per its datasheet specifications. This extended range supports deployment in automotive under-hood environments and industrial process equipment where ambient temperatures exceed standard commercial limits. The EEPROM programming limit remains at 85°C, so calibration must occur within that range.

Does the ZSC31010CIG1-T require external components for basic operation?

The ZSC31010CIG1-T operates with only two external capacitors: a 100–470 nF decoupling capacitor between VDD and VSS, and a 10 nF capacitor on the OUT/OWI line for ZACwire™ timing. No external resistors, trimmers, or temperature sensors are needed - all calibration and compensation are handled internally via EEPROM-stored coefficients and the on-chip PTAT sensor.

Can the ZSC31010CIG1-T support both analog and digital outputs simultaneously?

No - the ZSC31010CIG1-T supports only one output mode at a time: either analog (SIG™ pin) or digital (OUT/OWI pin). Mode selection is configured during calibration and stored in EEPROM; switching requires reprogramming via ZACwire™. Simultaneous dual-output operation is not supported by the hardware architecture.

What is the function of the Bsink pin on the ZSC31010CIG1-T?

The Bsink pin on the ZSC31010CIG1-T provides active current sinking for bridge excitation, improving ratiometric accuracy when used with low-resistance bridges (<1 kΩ). Its nominal RDS(ON) is 10 Ω at VDD = 5 V. When unused, Bsink must be left floating or tied to VSS; it is not required for standard bridge configurations with higher resistance.

How does the ZSC31010CIG1-T achieve ±0.1% FSO accuracy without external trimming?

The ZSC31010CIG1-T achieves ±0.1% FSO accuracy through factory-programmed EEPROM coefficients that correct offset, gain, and second-order temperature effects digitally within its DSP core. Its chopper-stabilized AFE minimizes drift, and the 14-bit ADC ensures sufficient resolution - eliminating the need for manual potentiometers or laser trimming during production.