Renesas ZSSC3241DL5C

Overview

ZSSC3241DL5C from Renesas is a sensor signal conditioning IC (SSC) for resistive sensors, providing 24-bit ADC digitization, 26-bit math-based digital compensation of offset, sensitivity, temperature drift, and non-linearity, and dual-domain analog/digital output support. It interfaces with bridge, half-bridge, Pt100, and external diode sensors via programmable front-end, and delivers calibrated outputs via I²C, SPI, or OWI. Used in industrial pressure/flow sensing and medical blood pressure monitors.

For engineers reviewing the ZSSC3241DL5C datasheet, ZSSC3241DL5C pinout, ZSSC3241DL5C application, or ZSSC3241DL5C equivalent, key selection criteria include its 24-QFN package with wettable flanks, dual 16-bit/24-bit math cores, ratiometric or 0–5 V absolute analog output, 4–20 mA current-loop capability, and -40°C to +125°C operating range.

Technical Context

The ZSSC3241DL5C implements a two-stage programmable-gain amplifier (PGA) with 120 gain steps (1.32–540 V/V), supporting sensor input spans from 1 mV/V to 500 mV/V across 0.5 kΩ–60 kΩ elements. Its analog front-end includes internal voltage regulators (VDDB = 1.75 V ±0.07 V), on-chip temperature sensor, and configurable sensor bias current (5–500 µA) for current-mode or ratiometric supply.

Digital processing uses a primary 24-bit sensor-signal-conditioning math core and a secondary 16-bit support core for independent analog-output correction. Calibration coefficients are stored in reprogrammable NVM, enabling field updates. Measurement scheduling supports wake-up-on-request, continuous fast-response, and cyclic modes with programmable update rates up to 2.5 kHz.

Key Specifications

Pinout & Package

Package: 4 × 4 mm² 24-pin QFN with wettable flanks (exposed thermal pad). Enables visual solder-joint inspection and improved thermal dissipation in compact sensor modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX1452ACM+T and AD8422ARZ, the ZSSC3241DL5C delivers higher integration (on-chip 24-bit ADC, dual math cores, 4–20 mA driver), broader sensor compatibility (Pt100, diodes, bridges), and field-programmable calibration - reducing total system BOM count by up to 7 components and accelerating time-to-market for certified smart sensors.

Availability

ZSSC3241DL5C is available at Aetrix Electronics and suitable for industrial pressure sensing, medical blood pressure monitoring, and smart flow metering requiring stable component supply and long-term lifecycle assurance.

Supply support for ZSSC3241DL5C 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 markets.

The ZSSC3241DL5C belongs to Renesas' Smart Sensor Signal Conditioning product line, designed specifically to replace discrete analog signal chains in high-accuracy resistive sensor applications with a single-chip, field-calibratable solution.

FAQ

What sensor types does the ZSSC3241DL5C support?

The ZSSC3241DL5C supports resistive bridge and half-bridge sensors, Pt100 RTDs, NTC/PTC thermistors, and external temperature diodes. It accommodates sensor impedances from 0.5 kΩ to 60 kΩ and signal spans from 1 mV/V to 500 mV/V. The ZSSC3241DL5C provides dedicated bias current sources and ratiometric supply configurations to match each sensor type's excitation requirements without external components.

Does the ZSSC3241DL5C support both analog and digital outputs simultaneously?

Yes, the ZSSC3241DL5C supports concurrent analog and digital outputs. Its dual-domain architecture includes separate 24-bit and 16-bit math cores, allowing independent calibration of the digital output (via I²C/SPI/OWI) and analog output (0–1 V, 0–5 V, ratiometric, or 4–20 mA). This enables simultaneous transmission of raw corrected data and a hardwired analog signal for legacy system integration or redundancy.

How does the ZSSC3241DL5C handle temperature compensation?

The ZSSC3241DL5C performs full digital temperature compensation using a 26-bit math core executing sensor-specific algorithms. It leverages its on-chip temperature sensor and supports external temperature sensing via TEXT pin (for diodes) or bridge-as-thermometer configurations. Calibration coefficients for offset, sensitivity, and non-linearity vs. temperature are stored in reprogrammable NVM, enabling post-assembly characterization and field updates - all implemented within the ZSSC3241DL5C without host processor involvement.

What is the purpose of the LDOctrl pin on the ZSSC3241DL5C?

The LDOctrl pin on the ZSSC3241DL5C is an analog output that drives the gate of an external JFET or MOSFET to regulate VDD beyond the internal 5.5 V limit. When used with an external transistor, the ZSSC3241DL5C supports supply voltages up to 48 V - enabling direct integration into 24 V or 48 V industrial current-loop systems without intermediate DC-DC conversion, thereby improving efficiency and reducing component count.

Can the ZSSC3241DL5C operate in low-power modes for battery-powered applications?

Yes, the ZSSC3241DL5C features three programmable operation modes including wake-up-on-request and cyclic measurement scheduling. In idle state with OWI and LDOctrl disabled, it draws only 1.5 µA typical (6 µA max at 85°C). Its average current consumption is 3.5 µA for one complete SSC measurement per second - making the ZSSC3241DL5C suitable for multi-year battery life in wireless sensor nodes and portable medical devices.