Renesas ZSSC3241DL1B

Overview

ZSSC3241DL1B from Renesas is a sensor signal conditioning IC (SSC) for high-accuracy amplification, digitization, and correction of resistive sensor signals-including bridge, half-bridge, Pt100, and external diode sensors. It features 24-bit ADC resolution, 16-bit DAC output, dual math cores (24-bit main + 16-bit support), I²C/SPI/OWI interfaces, and operates from 2.7V to 5.5V across –40°C to 125°C for industrial pressure and flow sensing.

For engineers reviewing the ZSSC3241DL1B datasheet, ZSSC3241DL1B pinout, ZSSC3241DL1B application, or ZSSC3241DL1B equivalent, this page delivers verified technical context, real-world analog/digital output configurations, validated pin functions, and confirmed alternative options for calibrated smart sensor modules requiring ratiometric voltage, 4–20mA loop, or interrupt-driven outputs.

Technical Context

The ZSSC3241DL1B integrates a programmable-gain amplifier (PGA) with 120 gain steps (1.32–540 V/V), a 12–24-bit configurable ADC, and two independent math cores: a 24-bit primary core for full sensor correction (offset, sensitivity, temperature drift, nonlinearity) and a 16-bit secondary core for dual-domain (analog + digital) output optimization. Calibration coefficients are stored in reprogrammable NVM.

It supports three operating modes-wake-up-on-request, continuous/fast-response, and automatic cyclic measurement-with programmable scheduler balancing update rate (up to 2.5 kHz), energy consumption, and self-diagnostic coverage. Analog outputs include absolute (0–1 V / 0–5 V), ratiometric (2.5–97.5% VDD), and 4–20 mA current-loop, all configurable via digital interface without hardware change.

Key Specifications

Pinout & Package

The ZSSC3241DL1B is packaged in a 4 × 4 mm² 24-QFN with wettable flanks for automated optical inspection of solder joints. The exposed thermal pad (Pin 25) must be connected to VSS for thermal dissipation and EMC robustness.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX1452ACM+T and AD7793BRUZ, the ZSSC3241DL1B uniquely integrates dual math cores, reprogrammable NVM, triple analog output domains, and OWI-enabling fully autonomous, calibration-ready smart sensors with no host MCU dependency for correction or output generation.

Availability

ZSSC3241DL1B is available at Aetrix Electronics and suitable for industrial pressure sensing, medical blood pressure monitoring, HVAC flow control, and white goods level detection requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for ZSSC3241DL1B 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

Renesas Electronics is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT applications.

The ZSSC3241DL1B belongs to Renesas' Sensor Signal Conditioning product line, designed specifically for high-accuracy, low-power, autonomous smart sensors in harsh industrial and medical environments where calibration stability and multi-output flexibility are critical.

FAQ

What sensor types does the ZSSC3241DL1B support?

The ZSSC3241DL1B supports resistive bridge and half-bridge sensors, Pt100 RTDs, external temperature diodes, and resistive divider strings. It accommodates sensor impedances from 0.5 kΩ to 60 kΩ and signal spans from 1 mV/V to 500 mV/V. Its programmable front-end allows configuration for voltage-source or current-mode excitation-making ZSSC3241DL1B adaptable across pressure, flow, level, and temperature sensing platforms without hardware redesign.

Does the ZSSC3241DL1B support 4–20 mA current-loop output?

Yes, the ZSSC3241DL1B supports 4–20 mA current-loop output using its AOUT/OWI1 pin, FB feedback pin, and OWI2in control input. An external bipolar transistor or JFET is required for loop drive, with LDOctrl enabling regulation up to 48 V. The IC provides built-in diagnostics for loop integrity and supports concurrent OWI communication and analog output-verified in typical application examples on page 4 of the datasheet.

What digital interfaces are available on the ZSSC3241DL1B?

The ZSSC3241DL1B offers three digital interfaces: SPI (up to 10 MHz), I²C (Standard/Fast/High-Speed modes), and One-Wire Interface (OWI, up to 100 kbps). All interfaces support full read/write access to NVM, real-time readout of raw ADC and corrected S/T values, and configuration of operating modes, PGA gain, DAC output type, and interrupt thresholds-enabling flexible calibration and system integration.

How does the ZSSC3241DL1B handle temperature compensation?

The ZSSC3241DL1B performs full digital temperature compensation using a 26-bit math core executing sensor-specific algorithms with coefficients stored in reprogrammable NVM. It supports on-chip temperature sensing plus external methods-including bridge-as-thermistor, external diodes, and Pt100-each with dedicated bias current and signal routing. Compensation covers offset, sensitivity, and nonlinearity drift across –40°C to 125°C, achieving <±0.1% FS accuracy in calibrated systems.

What is the purpose of the LDOctrl pin on the ZSSC3241DL1B?

The LDOctrl pin on the ZSSC3241DL1B is an analog output that drives the gate of an external JFET or MOSFET to regulate VDD up to 48 V-extending operation beyond the native 5.5 V supply limit. It enables high-voltage current-loop applications while maintaining internal logic at safe voltage levels. The target VDD level (4.6–5.5 V) is programmable via NVM, and the topology is documented in Figure 28 and Section 6.7 of the datasheet.