Renesas ZSSC3240CC6B

Overview

ZSSC3240CC6B from Renesas is a sensor signal conditioning IC (SSC) for resistive sensors, providing 24-bit ADC digitization, 26-bit math-based correction of offset, sensitivity, temperature drift, and non-linearity, and programmable analog outputs including 0–1 V, 0–5 V, ratiometric voltage, and 4–20 mA current loop. It supports bridge, half-bridge, Pt100, and external diode sensors with on-chip current source and internal temperature sensing, used in industrial pressure/flow sensing and medical blood pressure monitors.

For engineers reviewing the ZSSC3240CC6B datasheet, ZSSC3240CC6B pinout, ZSSC3240CC6B application, or ZSSC3240CC6B equivalent, key selection criteria include supported sensor resistance range (0.5 kΩ to 60 kΩ), operating temperature (−40°C to +125°C), supply voltage (2.7 V to 5.5 V), digital interface options (I²C, SPI, OWI), and configurable analog output modes (voltage or current-loop).

Technical Context

The ZSSC3240CC6B integrates a programmable-gain amplifier (PGA) with 120 gain steps (1.32–540 V/V), a 12–24-bit ADC, and a 13–16-bit DAC. Its 26-bit math core executes sensor-specific correction algorithms using calibration coefficients stored in reprogrammable NVM, enabling high-accuracy compensation across temperature and measurand ranges.

Digital interfaces include I²C (Standard/Fast/High-Speed), SPI (up to 10 MHz), and One-Wire Interface (OWI, up to 100 kbit/s). Three operation modes-wake-up-on-request, continuous/fast-response, and automatic/cyclic measurement-support energy-efficient smart sensor designs with diagnostics for sensor connection, memory integrity, and chip health.

Key Specifications

Pinout & Package

Package: 4 × 4 mm² 24-QFN with wettable flanks (exposed thermal pad connected to VSS).

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 ZSSC3240CC6B uniquely integrates correction math, reprogrammable NVM, multi-interface support, and configurable analog outputs - enabling true single-chip smart sensor implementation without host processor dependency.

Availability

ZSSC3240CC6B is available at Aetrix Electronics and suitable for industrial pressure sensing, medical blood pressure monitoring, and smart flow metering requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ZSSC3240CC6B 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 specializing in microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and IoT markets.

The ZSSC3240CC6B belongs to Renesas' Smart Sensor Signal Conditioning product line, designed to enable compact, high-accuracy, self-contained smart sensors for harsh-environment industrial and certified medical applications.

FAQ

What sensor types does the ZSSC3240CC6B support?

The ZSSC3240CC6B supports resistive bridge and half-bridge sensors, Pt100 RTDs, external temperature diodes, and resistive divider strings. It accommodates sensor resistances from 0.5 kΩ to 60 kΩ and signal spans from 1 mV/V to 500 mV/V. The ZSSC3240CC6B uses its on-chip current source to power external elements and includes dedicated TEXT and VDDB/VSSB pins for flexible biasing configurations.

Does the ZSSC3240CC6B require external calibration components?

No, the ZSSC3240CC6B does not require external calibration components. It contains reprogrammable non-volatile memory (NVM) that stores factory- or user-programmed correction coefficients for offset, sensitivity, temperature drift, and non-linearity. Its 26-bit math core applies these coefficients autonomously, enabling full sensor correction without external hardware or host MCU computation.

Can the ZSSC3240CC6B generate a 4–20 mA current-loop output?

Yes, the ZSSC3240CC6B supports 4–20 mA current-loop output using its AOUT/OWI1 pin in conjunction with the FB pin and an external bipolar transistor. The device provides dedicated current-loop configuration registers and diagnostic flags. The ZSSC3240CC6B's LDOctrl pin can also drive an external JFET to regulate higher supply voltages (up to 48 V) required for compliant current-loop operation.

What digital interfaces are available on the ZSSC3240CC6B?

The ZSSC3240CC6B offers three concurrent digital interfaces: SPI (up to 10 MHz), I²C (Standard, Fast, and High-Speed Mode), and One-Wire Interface (OWI, up to 100 kbit/s). Pins are shared functionally (e.g., MOSI/SDA, SCLK/SCL, AOUT/OWI1), allowing interface selection via configuration registers. The ZSSC3240CC6B supports simultaneous use of digital interface and analog output, including concurrent OWI communication and voltage output.

How does the ZSSC3240CC6B handle temperature compensation?

The ZSSC3240CC6B performs full temperature compensation using its on-chip temperature sensor and optional external sensing paths (e.g., bridge-as-thermometer, external diode via TEXT pin). Its 26-bit math core applies NVM-stored coefficients to correct sensitivity and offset drift across −40°C to +125°C. The ZSSC3240CC6B supports dual-temperature measurement (sensor and ambient) and allows independent coefficient sets for primary and secondary temperature channels.