Renesas ZSSC3027AI1D ES

Overview

ZSSC3027AI1D ES from Integrated Device Technology (IDT) is a low-power, 16-bit sensor signal conditioner IC designed for high-accuracy amplification and digital correction of resistive bridge sensor outputs. It delivers ±0.10% FSO accuracy from –40°C to +85°C, supports I²C (≤3.4 MHz) or SPI (≤20 MHz) digital output, and integrates an 18-bit DSP for 1st/2nd-order temperature and nonlinearity compensation - enabling precision barometric altitude measurement in portable navigation systems.

For engineers reviewing the ZSSC3027AI1D ES datasheet, ZSSC3027AI1D ES pinout, ZSSC3027AI1D ES application, or ZSSC3027AI1D ES equivalent, key selection considerations include its die-level delivery format, 20 nA sleep current, programmable 13.2–72 gain amplifier, on-chip MTP memory for calibration coefficients, and support for calibrated resistive sensor modules without external trimming components.

Technical Context

The ZSSC3027AI1D ES implements a two-stage programmable gain amplifier with auto-zero and chopper stabilization to suppress 1/f noise and offset drift. Its 16-bit charge-balancing ADC uses VDDB (1.67 V typical) as reference and supports configurable resolution from 10 to 16 bits, with conversion rates up to 355 Hz for raw measurements and 175 Hz for fully corrected outputs.

Digital signal conditioning is executed by an 18-bit internal DSP core that applies offset, span, and 1st/2nd-order temperature compensation using coefficients stored in on-chip multiple-time programmable (MTP) memory. The IC features dual operational modes (Normal and Command), automatic wake-up from 20 nA sleep state in ≤2 ms, and a ring oscillator delivering 4 MHz clocking for timing-critical sensing loops.

Key Specifications

Pinout & Package

Package: Die form factor for wafer-level bonding; delivered unsawn on 304 µm wafer (ZSSC3027AC1B variant). Not packaged in leaded or surface-mount IC housing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MLX90393 and AD7798, the ZSSC3027AI1D ES uniquely integrates bridge excitation, 18-bit DSP-based 2nd-order compensation, and one-time programmable memory - enabling drop-in deployment in calibrated altimeter modules without host CPU involvement or external passive components.

Availability

ZSSC3027AI1D ES is available at Aetrix Electronics and suitable for barometric altitude measurement, industrial pressure monitoring, and weather station sensor nodes requiring stable component supply across extended product lifecycles.

Supply support for ZSSC3027AI1D ES 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, designs high-performance timing, memory interface, and sensor signal conditioning solutions for communications, computing, and industrial markets.

The ZSSC3027AI1D ES belongs to IDT's ZSSC30x6 family of sensor signal conditioners, engineered specifically for high-resolution, low-power correction of resistive bridge sensors in altimeter, pressure, and temperature modules.

FAQ

What is the package type of ZSSC3027AI1D ES?

ZSSC3027AI1D ES is supplied as a bare die on a 304 µm-thick unsawn wafer, intended for chip-on-board (COB) or stacked-die bonding assembly. It does not have a molded plastic or ceramic IC package and requires wire bonding or flip-chip integration into the target module substrate.

Does ZSSC3027AI1D ES support both I²C and SPI interfaces simultaneously?

No - ZSSC3027AI1D ES supports either I²C or SPI, selected at power-up via the SEL pin (high = I²C, low = SPI). Both protocols share the same physical pins (SCLK/SCL, MOSI/SDA, MISO, SS), but only one interface is active per configuration; concurrent use is not supported.

How is calibration performed for ZSSC3027AI1D ES?

Calibration of ZSSC3027AI1D ES is performed externally using a PC-controlled procedure that writes sensor-specific coefficients into its on-chip MTP memory via the serial interface. The process collects raw bridge and temperature data across temperature and pressure points, computes correction parameters, and stores them - enabling fully autonomous compensation during operation.

What is the role of the VDDB pin on ZSSC3027AI1D ES?

The VDDB pin on ZSSC3027AI1D ES outputs a regulated 1.67 V supply used to excite the connected resistive bridge sensor. This internally generated voltage serves as both bridge bias and ADC reference, ensuring matched thermal drift and high PSRR - critical for maintaining ±0.10% FSO accuracy across temperature.

Can ZSSC3027AI1D ES operate from a 1.8 V supply?

Yes - ZSSC3027AI1D ES operates across 1.7 V to 3.6 V, making 1.8 V fully compliant. At 1.8 V, it delivers 930 µA typical active current and maintains full functionality including 20 MHz SPI, 3.4 MHz I²C, and 16-bit corrected output at 175 Hz, with PSRR improved to 32 dB.