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Home > Products > Integrated Circuits (ICs) > Interface > Sensor and Detector Interfaces

Renesas ZSSC3240CI5C

Name: ZSSC3240CI5C
Brand: Renesas
SKU: ZSSC3240CI5C
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZSSC3240CI5C

Manufacturer:: Renesas

Category:: Sensor and Detector Interfaces

Package:: Die

Datasheet:: ZSSC3240CI5C.pdf

Description:: WAFER (SAWN) - FRAME

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Product details

Overview

ZSSC3240CI5C 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-featuring 24-bit ADC resolution, 16-bit DAC output, I²C/SPI/OWI interfaces, and -40°C to +125°C operation. It delivers calibrated digital outputs and absolute/ratiometric voltage or 4–20 mA current-loop analog outputs for industrial pressure, flow, and medical sensing systems.

For engineers reviewing the ZSSC3240CI5C datasheet, ZSSC3240CI5C pinout, ZSSC3240CI5C application, or ZSSC3240CI5C equivalent, this page provides verified technical context, real-world interface configurations, confirmed analog output ranges, validated diagnostic capabilities, and precise package-level design meaning for smart sensor module integration.

Technical Context

The ZSSC3240CI5C integrates a programmable 24-bit math core executing sensor-specific correction algorithms using coefficients stored in reprogrammable NVM, enabling full digital compensation of offset, sensitivity, temperature drift, and non-linearity. Its analog front-end supports ratiometric or current-mode sensor excitation across 0.5 kΩ–60 kΩ sensor impedances with PGA gain configurable from 1.32× to 540×.

Digital interface flexibility includes SPI (up to 10 MHz), I²C (Standard/Fast/High-Speed modes), and OWI (up to 100 kbit/s), all usable concurrently with analog outputs. Three operational modes-wake-up-on-request, continuous/fast-response, and automatic cyclic measurement-enable optimized trade-offs among energy consumption, update rate (up to 2.91 kHz), accuracy, and self-diagnostic coverage.

Key Specifications

Parameter	Value and Actual Design Meaning
ADC Resolution	12–24 bit; selectable resolution directly impacts noise performance and conversion time (e.g., 24-bit mode yields 15.8–18.1 ENOB at 0.21 kHz sampling).
DAC Resolution	13–16 bit; enables precise analog output scaling-0–1 V, 0–5 V, or VDD-ratiometric (2.5%–97.5% of VDD) voltage outputs, or 4–20 mA current loop.
Supply Voltage	2.7–5.5 V (IC core); extended to 5–48 V via external transistor control through LDOctrl pin for high-voltage industrial applications.
Operating Temperature	-40°C to +125°C; qualified for under-hood automotive, factory automation, and medical monitoring environments without derating.
Sensor Support	Resistive bridges, half-bridges, Pt100 RTDs, and external diodes; accommodates 0.5 kΩ–60 kΩ sensor elements with on-chip bias current (5–500 µA) or ratiometric VDDB supply (1.68–1.80 V).
Digital Interfaces	I²C, SPI (10 MHz max), and OWI (100 kbit/s); all support calibration, configuration, and real-time data readout-SPI and I²C share pins (MOSI/SDA, SCLK/SCL) for footprint efficiency.
On-Chip Diagnostics	Real-time sensor connection check, broken-chip detection, memory integrity verification, and configurable interrupt signaling via EOC pin for system-level safety compliance.

Pinout & Package

Package: 4 × 4 mm² 24-QFN with wettable flanks (exposed thermal pad connected to VSS), supporting visual solder-joint inspection and enhanced thermal dissipation in compact sensor modules.

Pin/Terminal	Circuit Role	Design Meaning
INP / INN	Differential sensor input	Accepts bridge/half-bridge differential signals up to ±700 mV; common-mode range 0.5–1.2 V referenced to VDDB.
VDDB / VSSB	Sensor supply rails	VDDB provides regulated 1.68–1.80 V ratiometric bridge supply; VSSB serves as dedicated sensor ground-separated from digital ground (VSS) to minimize coupling noise.
AOUT / OWI1	Analog output / OWI bidirectional line	Delivers calibrated voltage or current-loop output; doubles as OWI data line-short-circuit protected to 10–12 mA for robust field deployment.
EOC	End-of-conversion interrupt	Active-low open-drain signal indicating completion of SSC cycle; used for low-latency host synchronization without polling overhead.
LDOctrl	External regulator control	Generates reference signal to drive external JFET or transistor for >5.5 V VDD regulation-enables single-supply operation in 7–48 V current-loop systems.
TEXT	External temperature sensor drive	Provides current source (with internal 150 Ω series resistor) for biasing external diodes or RTDs-supports dual-sensing (measurand + temperature) with shared analog path.

Key Features

Feature	Design Value
Programmable 24-bit math core	Executes full sensor correction (offset, sensitivity, temp drift, nonlinearity) using user-loaded NVM coefficients-eliminates need for external microcontroller-based compensation.
Multi-interface digital communication	I²C, SPI, and OWI coexist on shared pins (MOSI/SDA, SCLK/SCL) and AOUT/OWI1-reduces BOM count and PCB routing complexity in space-constrained modules.
Configurable analog output options	Single pin (AOUT) supports absolute (0–1 V / 0–5 V), ratiometric (2.5–97.5% VDD), or 4–20 mA outputs-enables drop-in replacement of legacy analog transmitters.
Integrated diagnostics engine	Automatically verifies sensor connectivity, chip integrity, and memory validity-outputs status via CHECK_DIAG command and EOC pin for ASIL-B–compatible system monitoring.
Measurement scheduler	Enables cyclic, low-power sensing with programmable update rates (0.07–2.91 kHz); balances power (as low as 3.5 µA avg), latency, and accuracy per application requirements.

Applications

Industrial Pressure Sensing	Medical Blood Pressure Monitoring
Use Scenario: High-stability pressure transducer in hydraulic control valves operating continuously at 125°C ambient. IC Role / Device Role / Timing Role: Primary signal conditioner performing real-time bridge excitation, 24-bit digitization, temperature-compensated linearization, and 4–20 mA loop output generation. Use Value: Achieves ≤0.01% FSO total error over temperature without external calibration hardware-reducing field maintenance and enabling predictive maintenance analytics.	Use Scenario: Portable sphygmomanometer requiring battery life >100 hours and clinical-grade accuracy per ANSI/AAMI SP10. IC Role / Device Role / Timing Role: Sensor front-end managing Pt100 temperature compensation, low-noise PGA gain, and wake-up-on-demand measurement to minimize idle current. Use Value: Delivers 1.5 µA typical idle current and <3.5 µA average active current-extending coin-cell battery life while maintaining 16-bit corrected digital output fidelity.
Smart HVAC Flow Measurement	White Goods Level Sensing
Use Scenario: Differential airflow sensor in commercial HVAC ducts with wide dynamic range (1–1000 Pa) and EMC exposure. IC Role / Device Role / Timing Role: Dual-role signal conditioner: digitizes bridge output via 16-bit ADC and drives ratiometric analog output (2.5–97.5% VDD) for PLC analog inputs. Use Value: Built-in CAOUT,EMC capacitance recommendation (22–33 nF) and exposed QFN pad provide Class B EMC immunity-eliminating external filtering components.	Use Scenario: Tank level detection in washing machines using resistive string sensors exposed to moisture and vibration. IC Role / Device Role / Timing Role: Robust front-end providing short-circuit protected AOUT, chipping-check diagnostics, and RESQ reset for fault recovery after power glitches. Use Value: On-chip broken-chip detection and memory integrity checks prevent false readings during mechanical shock-meeting IEC 60730 Class B safety requirements.

Industrial Pressure Sensing

Medical Blood Pressure Monitoring

Use Scenario: High-stability pressure transducer in hydraulic control valves operating continuously at 125°C ambient.

IC Role / Device Role / Timing Role: Primary signal conditioner performing real-time bridge excitation, 24-bit digitization, temperature-compensated linearization, and 4–20 mA loop output generation.

Use Value: Achieves ≤0.01% FSO total error over temperature without external calibration hardware-reducing field maintenance and enabling predictive maintenance analytics.

Use Scenario: Portable sphygmomanometer requiring battery life >100 hours and clinical-grade accuracy per ANSI/AAMI SP10.

IC Role / Device Role / Timing Role: Sensor front-end managing Pt100 temperature compensation, low-noise PGA gain, and wake-up-on-demand measurement to minimize idle current.

Use Value: Delivers 1.5 µA typical idle current and <3.5 µA average active current-extending coin-cell battery life while maintaining 16-bit corrected digital output fidelity.

Smart HVAC Flow Measurement

White Goods Level Sensing

Use Scenario: Differential airflow sensor in commercial HVAC ducts with wide dynamic range (1–1000 Pa) and EMC exposure.

IC Role / Device Role / Timing Role: Dual-role signal conditioner: digitizes bridge output via 16-bit ADC and drives ratiometric analog output (2.5–97.5% VDD) for PLC analog inputs.

Use Value: Built-in CAOUT,EMC capacitance recommendation (22–33 nF) and exposed QFN pad provide Class B EMC immunity-eliminating external filtering components.

Use Scenario: Tank level detection in washing machines using resistive string sensors exposed to moisture and vibration.

IC Role / Device Role / Timing Role: Robust front-end providing short-circuit protected AOUT, chipping-check diagnostics, and RESQ reset for fault recovery after power glitches.

Use Value: On-chip broken-chip detection and memory integrity checks prevent false readings during mechanical shock-meeting IEC 60730 Class B safety requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TDK InvenSense ICM-20948	9-axis MEMS IMU with integrated DMP; lacks dedicated resistive sensor front-end, PGA, or analog output drivers.	Targets motion sensing-not bridge/Pt100 signal conditioning; requires external ADC and analog output circuitry.	Select only if motion fusion (accel/gyro/mag) is primary requirement; not a functional substitute for ZSSC3240CI5C's resistive sensor pipeline.
Analog Devices AD7798	24-bit ΣΔ ADC with PGA and reference-but no integrated math core, NVM, DAC, or digital interfaces beyond SPI.	Requires external microcontroller for sensor correction, calibration storage, and analog output generation-increasing BOM and firmware effort.	Choose when ultra-low-noise ADC performance is critical and system already includes processing capability; adds design complexity vs. ZSSC3240CI5C's single-chip solution.

Compared with ICM-20948 and AD7798, the ZSSC3240CI5C uniquely integrates sensor-specific correction math, reprogrammable NVM, multi-format analog outputs, and triple digital interfaces in one 4×4 mm QFN-reducing system component count, firmware development, and calibration overhead for resistive sensor applications.

Availability

ZSSC3240CI5C is available at Aetrix Electronics and suitable for industrial pressure transducers, medical blood pressure monitors, HVAC airflow controllers, and white goods level sensors requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ZSSC3240CI5C 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-with emphasis on functional safety and reliability.

The ZSSC3240CI5C belongs to Renesas' Smart Sensor Signal Conditioning product line, designed specifically to replace discrete op-amp/ADC/microcontroller signal chains in high-accuracy resistive sensor applications-from factory floor to patient bedside.

FAQ

What sensor types does the ZSSC3240CI5C support?

The ZSSC3240CI5C supports resistive bridge sensors (full/half-bridge), Pt100 RTDs, external temperature diodes, and resistive divider strings. It accommodates sensor impedances from 0.5 kΩ to 60 kΩ and differential input spans from 1 mV/V to 500 mV/V. The device uses either ratiometric VDDB supply (1.68–1.80 V) or programmable current-source excitation (5–500 µA) to match sensor requirements-making ZSSC3240CI5C suitable for pressure, flow, level, and temperature sensing across industrial and medical domains.

Does the ZSSC3240CI5C support both digital and analog outputs simultaneously?

Yes, the ZSSC3240CI5C supports concurrent digital and analog outputs. Its AOUT/OWI1 pin delivers calibrated analog voltage (0–1 V, 0–5 V, or VDD-ratiometric) or 4–20 mA current-loop output while simultaneously serving as an OWI data line. SPI and I²C interfaces remain fully operational during analog output generation-enabling real-time calibration updates and diagnostics without interrupting analog transmission. This dual-path capability makes ZSSC3240CI5C ideal for hybrid smart sensor modules requiring both PLC-compatible analog signals and digital configuration.

How is sensor calibration handled in the ZSSC3240CI5C?

Sensor calibration in the ZSSC3240CI5C is performed by loading 24-bit correction coefficients into its reprogrammable nonvolatile memory (NVM) via I²C, SPI, or OWI. These coefficients drive the on-chip 26-bit math core to compensate for offset, sensitivity, temperature drift, and nonlinearity in real time. Calibration occurs off-line using standard equipment, then stored permanently-eliminating need for external EEPROM or microcontroller-based computation. The ZSSC3240CI5C retains full calibration integrity across power cycles and temperature extremes, ensuring ZSSC3240CI5C delivers consistent accuracy without recalibration in field-deployed systems.

What are the power supply options for the ZSSC3240CI5C?

The ZSSC3240CI5C operates from 2.7 V to 5.5 V on VDD for standard applications. For higher-voltage systems (e.g., 7–48 V current loops), it supports external regulation via the LDOctrl pin driving an external JFET or transistor-enabling single-supply operation without auxiliary regulators. Internally, it generates a stable 1.68–1.80 V analog supply (VDDB) for sensor excitation and features separate analog (VSSB) and digital (VSS) grounds to suppress noise coupling. Idle current drops to 1.5 µA (typical), and average active current is as low as 3.5 µA per second-making ZSSC3240CI5C highly efficient for battery-powered smart sensors.

What diagnostics does the ZSSC3240CI5C provide for system safety?

The ZSSC3240CI5C includes on-chip diagnostics for sensor connection integrity, broken-chip detection (chipping-check), and NVM memory integrity verification. Diagnostic status is accessible via the CHECK_DIAG command and signaled through the EOC pin or dedicated register bits. These features enable automated fault detection during startup and runtime-supporting functional safety requirements in industrial (IEC 61508) and medical (IEC 62304) applications. Because ZSSC3240CI5C performs self-checks independently of host firmware, it enhances system reliability without adding software validation burden-critical for ZSSC3240CI5C deployments in safety-critical sensing nodes.

ZSSC3240CI5C Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Package/Case:: Die

Series:: -

Packaging:: Tray

Product Status:: Active

Programmable:: -

Type:: Signal Conditioner

Input Type:: Analog

Output Type:: 1-Wire®, I2C, SPI

Current - Supply:: 2.8 mA

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Die

ZSSC3240CI5C FAQ

1.How can I place an order for ZSSC3240CI5C through Aetrix?

Please submit a Request for Quotation (RFQ) for ZSSC3240CI5C on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ZSSC3240CI5C reliable?

The price and inventory of ZSSC3240CI5C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSSC3240CI5C is usually 5 days.

3.What payment methods are accepted for ZSSC3240CI5C?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSSC3240CI5C transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZSSC3240CI5C?

ZSSC3240CI5C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZSSC3240CI5C order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ZSSC3240CI5C?

For technical support, including ZSSC3240CI5C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSSC3240CI5C requirements.

6.How does Aetrix verify that ZSSC3240CI5C is sourced from the original manufacturer or authorized distributors?

All ZSSC3240CI5C products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ZSSC3240CI5C meets industry standards.

7.What is the process for return or replacement of ZSSC3240CI5C?

All ZSSC3240CI5C units undergo pre-shipment inspection (PSI). If there is an issue with ZSSC3240CI5C, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ZSSC3240CI5C part is unused and in its original packaging.

Return procedure for ZSSC3240CI5C:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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