Renesas ZSC31014EAB

Overview

ZSC31014EAB from Integrated Device Technology (IDT) is a CMOS signal conditioner IC for high-accuracy amplification and 14-bit analog-to-digital conversion of differential and half-bridge sensor signals. It delivers ±0.1% FSO accuracy over -25°C to +85°C, supports I²C™ or SPI digital output, and performs on-chip digital compensation for offset, span, temperature drift (1st/2nd order), and non-linearity - enabling precise calibration of piezoresistive bridge sensors in industrial pressure meters and medical infusion pumps.

For engineers reviewing the ZSC31014EAB datasheet, ZSC31014EAB pinout, ZSC31014EAB application, or ZSC31014EAB equivalent, this device is selected for its integrated diagnostics (EEPROM integrity check, bridge short detection), low-power Sleep Mode (<2 µA), fast 3 ms power-up response at 4 MHz, and support for bridge spans as low as <1 mV/V with eight programmable analog gain settings.

Technical Context

The ZSC31014EAB integrates a chopper-stabilized preamplifier with 8 selectable analog gain settings (1.5–192), a 14-bit charge-balancing ADC, and a digital signal processor executing sensor-specific correction algorithms using coefficients stored in on-chip EEPROM. Its AFE accepts differential inputs (VBP/VBN) and supports half-bridge mode where VBN is internally biased to VDD/2.

Digital interfaces include I²C™ (up to 400 kHz) and SPI, both configurable for measurement readout or calibration programming. Internal diagnostics monitor EEPROM signature, bridge connection continuity, and bridge short conditions - features explicitly validated for safety-critical applications per datasheet Sections 2.4.1–2.4.3.

Key Specifications

Pinout & Package

Package: Die form - unsawn on wafer, intended for hybrid or custom module integration (not surface-mount SOP8). No PCB footprint or thermal pad defined; requires customer-specific die attach and wire bonding.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX1452ACM+T and AD7793BRUZ, the ZSC31014EAB uniquely integrates digital compensation logic, EEPROM, I²C™/SPI, and safety diagnostics in a single die - eliminating external calibration components and reducing firmware development effort for bridge sensor systems.

Availability

ZSC31014EAB is available at Aetrix Electronics and suitable for industrial pressure meters, medical infusion pumps, and white goods refrigerant control systems requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for ZSC31014EAB 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.

The ZSC31014EAB belongs to IDT's RBicilite™ family of digital-output sensor signal conditioners, designed specifically to replace analog trimming components and enable fast, precise, one-pass digital calibration of piezoresistive bridge sensors.

FAQ

What is the package type of ZSC31014EAB?

ZSC31014EAB is supplied as an unsawn die on wafer, not in a molded surface-mount package. It requires custom integration via wire bonding into hybrid modules or specialized substrates. This differs from the SOP8-packaged ZSC31014EAG1 variant and is intended for high-volume, space-constrained applications where die-level assembly is feasible.

Does ZSC31014EAB support both I²C™ and SPI interfaces simultaneously?

No, ZSC31014EAB supports I²C™ and SPI as mutually exclusive interface modes configured at power-up via internal register settings. The same pins (SDA/MISO, SCL/SCLK, INT/SS) serve dual functions, but only one protocol can be active per operational session. I²C™ is used for calibration and configuration; SPI is optimized for high-speed measurement data reads.

What is the minimum bridge sensitivity supported by ZSC31014EAB?

ZSC31014EAB supports bridge sensitivities below 1 mV/V when using the highest analog gain setting (192×) and appropriate A2D offset configuration. Table 1.4 confirms guaranteed ≥10-bit resolution for input spans as low as 6 mV/V at gain=192, enabling use with ultra-low-output MEMS pressure elements.

How does ZSC31014EAB handle temperature compensation?

ZSC31014EAB performs 2nd-order digital compensation for both offset temperature coefficient (Tco) and span temperature coefficient (Tcg) using coefficients stored in on-chip EEPROM. It measures die temperature via an internal reference and applies correction polynomials to the digitized bridge output - all executed autonomously by the integrated DSP without host intervention.

Is ZSC31014EAB qualified for automotive applications?

ZSC31014EAB operates over -40°C to +125°C and includes diagnostics such as EEPROM integrity check and bridge short detection, but it is not AEC-Q200 qualified. It is targeted at industrial, medical, and consumer systems meeting those temperature and safety requirements - not automotive ECUs requiring formal qualification.