Renesas ZSSC5101BE1B

Overview

ZSSC5101BE1B from Integrated Device Technology is a CMOS xMR sensor signal conditioner IC that converts differential sine/cosine outputs from AMR/GMR/TMR bridge sensors into a ratiometric analog voltage output. It delivers ±0.15° integral nonlinearity after calibration, supports up to 360° mechanical travel range, operates from -40°C to +160°C, and features in-line one-wire programming via the VOUT pin for fully assembled 3-wire sensors.

For engineers reviewing the ZSSC5101BE1B datasheet, ZSSC5101BE1B pinout, ZSSC5101BE1B application, or ZSSC5101BE1B equivalent, key selection considerations include its 12-bit input ADC resolution, 16-bit CORDIC-based angular calculation, programmable zero/angle/clamp parameters, loss-of-magnet detection, and AEC-Q100 Grade 0 qualification for automotive position sensing.

Technical Context

The ZSSC5101BE1B implements a dedicated CORDIC algorithm to convert digitized sine/cosine inputs (from VSINP/VSINN/VCOSP/VCOSN) into phase and magnitude outputs, with 13-bit angular accuracy and 10-bit magnitude resolution. Its analog front end includes a programmable-gain amplifier (17.8–36.4×), 12-bit ADC, and offset/temperature compensation circuitry.

Digital processing is executed on an internal 1.5–1.8 MHz clock; output updates occur at 2–3.125 kHz. The device uses EEPROM-stored parameters-including zero position, angular range (5–360° mech), rising/falling slope, and upper/lower clamping levels (5–95% VDDE)-to configure the DAC-driven ratiometric VOUT.

Key Specifications

Pinout & Package

Package: Bare die (unsawn 8" wafer, thickness = 390 ±15 µm); no leadframe or molded body. Designed for direct die bonding or flip-chip integration into custom sensor packages.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HAL3900 and MLX90393, the ZSSC5101BE1B uniquely combines differential xMR bridge support, on-chip CORDIC angle computation, ratiometric analog output, and in-line one-wire programming-making it the only solution optimized for high-accuracy, self-contained, automotive-grade absolute position sensing with AMR/GMR/TMR bridges.

Availability

ZSSC5101BE1B is available at Aetrix Electronics and suitable for automotive steering systems, brake-by-wire modules, and industrial linear position sensing requiring stable component supply across extended temperature ranges and long lifecycle commitments.

Supply support for ZSSC5101BE1B 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 ICs for automotive, industrial, and communications markets.

The ZSSC5101BE1B belongs to IDT's xMR sensor signal conditioner product line, designed specifically to enable high-accuracy, programmable, and diagnostics-rich absolute position sensing in harsh automotive environments using magnetoresistive technology.

FAQ

What is the operating temperature range for the ZSSC5101BE1B?

The ZSSC5101BE1B is specified for operation from -40°C to +160°C ambient temperature as a bare die. This extended range meets AEC-Q100 Grade 0 requirements and supports under-hood automotive applications such as steering angle and throttle position sensing where thermal robustness is critical. The die form factor enables direct thermal coupling to heat sinks or metal substrates for optimal thermal management.

How does the ZSSC5101BE1B achieve angular position calculation?

The ZSSC5101BE1B performs angular position calculation using an on-chip CORDIC (Coordinate Rotation Digital Computer) algorithm. It digitizes differential sine and cosine inputs from xMR bridges via a 12-bit ADC, then computes phase (0–2π) with 13-bit accuracy and magnitude with 10-bit resolution. The resulting phase is mapped to a user-programmable angular range (5–360° mech) and converted to a ratiometric analog output voltage through a 16-bit-equivalent DAC.

Can the ZSSC5101BE1B be programmed after assembly into a sensor module?

Yes, the ZSSC5101BE1B supports in-line programming after full sensor module assembly via its one-wire interface on the VOUT pin. This eliminates the need for additional programming pins or test fixtures. Programming requires a driver capable of overdriving the VOUT buffer (>20 mA), and all configuration parameters-including zero position, angular range, clamping levels, and slope-are stored in EEPROM with ≥200 write cycles and 17-year data retention.

What diagnostic capabilities does the ZSSC5101BE1B provide?

The ZSSC5101BE1B integrates multiple diagnostics: broken-wire detection on VDDE/VSSE, loss-of-magnet indication via magnitude monitoring, EEPROM CRC and error correction, power-supply monitoring (VPW-ON/OFF thresholds), and output-stage fault reporting. In failure modes, VOUT drives outside the normal 5–95% VDDE range (<4% or >96% VDDE) to signal faults to the host controller without requiring additional communication lines.

Which sensor bridge types are compatible with the ZSSC5101BE1B?

The ZSSC5101BE1B accepts anisotropic (AMR), giant (GMR), and tunnel (TMR) magnetoresistive bridge sensors. It supports both rotational and linear movement configurations, with full-scale travel up to 360° mechanical for GMR/TMR and 180° for AMR. Input stage specifications-including ±23 mV/V differential range, 30–70% VDDE common-mode range, and 60 dB CMRR-ensure compatibility with standard xMR bridge outputs without external signal conditioning.