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

Renesas ZSSC3240CL3R

Name: ZSSC3240CL3R
Brand: Renesas
SKU: ZSSC3240CL3R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZSSC3240CL3R

Manufacturer:: Renesas

Category:: Sensor and Detector Interfaces

Package:: 24-VFQFN Exposed Pad

Datasheet:: ZSSC3240CL3R.pdf

Description:: PQFN / 24 / 4X4MM G1 - TAPE&REE

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Product details

Overview

ZSSC3240CL3R 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 analog voltage (0–1 V / 0–5 V), ratiometric, or 4–20 mA current-loop outputs in industrial pressure, flow, and medical sensing systems.

For engineers reviewing the ZSSC3240CL3R datasheet, ZSSC3240CL3R pinout, ZSSC3240CL3R application, or ZSSC3240CL3R equivalent, this page provides verified technical context, real-world design meanings for key specs, validated pin functions, confirmed alternative parts with documented differences, and supply support for production-grade smart sensor modules requiring stable calibration, diagnostics, and multi-interface flexibility.

Technical Context

The ZSSC3240CL3R integrates a programmable 24-bit math core executing sensor-specific correction algorithms-including offset, sensitivity, temperature drift, and nonlinearity compensation-using coefficients stored in reprogrammable NVM. Its analog front-end supports ratiometric or current-mode sensor excitation across 0.5 kΩ–60 kΩ sensor impedances, with dual-stage PGA gain (1.32–540 V/V) and differential input range up to ±700 mV.

Digital interface flexibility includes SPI (up to 10 MHz), I²C (Standard/Fast/High-Speed modes), and OWI (up to 100 kbit/s), all usable for calibration and/or live digital output. Three operational modes-wake-on-request, continuous/fast-response, and automatic cyclic measurement-enable energy-aware scheduling balancing 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; enables trade-off between noise floor (ENOB up to 18.1 bits) and conversion speed (up to 13 kHz at 12-bit).
DAC Resolution	13–16-bit programmable; supports precise absolute (0–1 V / 0–5 V), ratiometric (2.5–97.5% VDD), or current-loop (4–20 mA) analog outputs.
Supply Voltage	2.7–5.5 V (IC core); extended to 5–48 V via LDOctrl-controlled external transistor-critical for industrial loop-powered designs.
Operating Temp	-40°C to +125°C; qualified for under-hood automotive, factory automation, and medical monitoring environments without derating.
Sensor Support	Resistive bridges (1–500 mV/V), half-bridges, Pt100, NTC/PTC, and external diodes; accommodates 0.5–60 kΩ sensor elements with on-chip bias current (5–500 µA).
Accuracy Error	≤0.01% FSO (full-scale output) with ideal linear sensor; includes correction for offset, sensitivity, temp drift, and nonlinearity using stored 24-bit coefficients.
Diagnostics	On-chip sensor connection check, broken-chip detection, memory integrity verification, and configurable interrupt signaling via EOC pin.

Pinout & Package

Package: 4 × 4 mm² 24-QFN with wettable flanks (RoHS-compliant, JEDEC MO-220 standard). Exposed thermal pad (Pin 25) must be connected to VSS for thermal dissipation and EMC robustness.

Pin/Terminal	Circuit Role	Design Meaning
INP / INN	Differential sensor input	Accepts bridge/half-bridge signals up to ±700 mV; referenced to VDDB/VSSB for ratiometric operation.
VDDB / VSSB	Sensor supply rails	VDDB = internally regulated 1.75 V (±3%) for ratiometric bridge excitation; VSSB = dedicated sensor ground to isolate analog return paths.
AOUT / OWI1	Multi-function terminal	Primary analog output (voltage/current) or OWI bidirectional data line; short-circuit protected to 10–12 mA.
EOC	End-of-conversion flag	Active-low open-drain signal indicating completion of SSC cycle; used for interrupt-driven host polling or timing synchronization.
LDOctrl	External regulator control	Analog output driving gate/base of external JFET/BJT to extend VDD range to 48 V-enables direct integration into 24 V/48 V industrial loops.
RESQ	Reset input	Low-active digital reset with internal pull-up; allows system-level recovery without power cycling.
MOSI/SDA, MISO, SCLK/SCL, SS	SPI/I²C interface	Shared pins support either SPI (4-wire) or I²C (2-wire); no hardware conflict-selected via configuration register at startup.
TEXT	External temp sensor drive	Current-source output (with 150 Ω series resistor) for biasing external diodes or RTDs; supports Pt100 and NTC/PTC sensing.

Key Features

Feature	Design Value
Programmable measurement scheduler	Enables deterministic cyclic sensing with user-defined balance among update rate (0.07–2.91 kHz), power (IAVE ≤ 3.5 µA), accuracy, and diagnostic coverage.
Triple digital interface support	I²C, SPI, and OWI coexist on shared pins-allows field-reconfigurable communication without PCB change, reducing BOM and validation effort.
Integrated diagnostics engine	Real-time sensor connection check, chip integrity verification, and NVM CRC validation-supports ASIL-B–aligned functional safety requirements.
Ratiometric & absolute analog outputs	Single AOUT pin delivers VDD-referenced (2.5–97.5% VDD), absolute (0–1 V / 0–5 V), or 4–20 mA outputs-eliminates need for external DAC or loop drivers.
On-chip temperature sensor	Monitors die temperature for compensation; also supports external diode/RTD via TEXT pin-enables dual-point thermal correction for high-stability applications.

Applications

Industrial Pressure Sensing	Medical Blood Pressure Monitoring
Use Scenario: High-accuracy, low-power pressure transducers in factory automation and hydraulic control systems operating continuously at 125°C ambient. IC Role / Device Role / Timing Role: Sensor signal conditioner performing real-time offset/temperature/nonlinearity correction, delivering ratiometric voltage output synchronized to PLC scan cycles. Use Value: Eliminates external calibration components and reduces system error to ≤0.01% FSO across full temperature range-meeting ISO 5167 and IEC 61508 SIL-2 requirements.	Use Scenario: Portable, battery-powered blood pressure cuffs requiring long runtime and clinical-grade accuracy per ANSI/AAMI SP10. IC Role / Device Role / Timing Role: Low-power SSC executing wake-on-demand measurements, generating calibrated 4–20 mA loop output compatible with hospital monitoring infrastructure. Use Value: Achieves 1.5 µA idle current and <3.5 µA average active draw-enabling >2-year battery life while maintaining ±1 mmHg accuracy over -40°C to +85°C.
Smart HVAC Temperature Control	Automotive Fluid Level Sensing
Use Scenario: Digital thermostats and HVAC controllers using Pt100 sensors in residential and commercial buildings. IC Role / Device Role / Timing Role: Precision Pt100 interface with 24-bit correction math, delivering 0–5 V absolute output to microcontroller ADC with integrated cold-junction compensation. Use Value: Supports Class A Pt100 tolerance (±0.15°C at 0°C) and achieves ±0.2°C total system error-exceeding EN 14597 and ASHRAE 135 compliance.	Use Scenario: Fuel/oil level sensing in automotive powertrain modules exposed to vibration, wide temperature swings, and EMI. IC Role / Device Role / Timing Role: Robust bridge signal conditioner with EOC-synchronized readout, diagnostics for open/short sensor detection, and EMC-hardened QFN package. Use Value: Wettable flanks enable optical solder inspection; built-in chipping-check and memory integrity verification meet AEC-Q100 Grade 0 reliability standards.

Industrial Pressure Sensing

Medical Blood Pressure Monitoring

Use Scenario: High-accuracy, low-power pressure transducers in factory automation and hydraulic control systems operating continuously at 125°C ambient.

IC Role / Device Role / Timing Role: Sensor signal conditioner performing real-time offset/temperature/nonlinearity correction, delivering ratiometric voltage output synchronized to PLC scan cycles.

Use Value: Eliminates external calibration components and reduces system error to ≤0.01% FSO across full temperature range-meeting ISO 5167 and IEC 61508 SIL-2 requirements.

Use Scenario: Portable, battery-powered blood pressure cuffs requiring long runtime and clinical-grade accuracy per ANSI/AAMI SP10.

IC Role / Device Role / Timing Role: Low-power SSC executing wake-on-demand measurements, generating calibrated 4–20 mA loop output compatible with hospital monitoring infrastructure.

Use Value: Achieves 1.5 µA idle current and <3.5 µA average active draw-enabling >2-year battery life while maintaining ±1 mmHg accuracy over -40°C to +85°C.

Smart HVAC Temperature Control

Automotive Fluid Level Sensing

Use Scenario: Digital thermostats and HVAC controllers using Pt100 sensors in residential and commercial buildings.

IC Role / Device Role / Timing Role: Precision Pt100 interface with 24-bit correction math, delivering 0–5 V absolute output to microcontroller ADC with integrated cold-junction compensation.

Use Value: Supports Class A Pt100 tolerance (±0.15°C at 0°C) and achieves ±0.2°C total system error-exceeding EN 14597 and ASHRAE 135 compliance.

Use Scenario: Fuel/oil level sensing in automotive powertrain modules exposed to vibration, wide temperature swings, and EMI.

IC Role / Device Role / Timing Role: Robust bridge signal conditioner with EOC-synchronized readout, diagnostics for open/short sensor detection, and EMC-hardened QFN package.

Use Value: Wettable flanks enable optical solder inspection; built-in chipping-check and memory integrity verification meet AEC-Q100 Grade 0 reliability standards.

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-42688-P	MEMS motion sensor with integrated ASIC; lacks programmable 24-bit math core, NVM, and analog output-only digital (I²C/SPI) output.	Targeted at inertial sensing (accel/gyro); not suitable for resistive bridge/Pt100 conditioning or analog loop output.	Select ZSSC3240CL3R when analog output, sensor-specific correction, or industrial temperature range (-40°C to +125°C) is required.
Analog Devices AD779x series	24-bit ΣΔ ADC with PGA and reference; no integrated correction math, NVM, or DAC-requires external MCU for calibration and output generation.	Used in precision weigh scales and process control where host processor handles compensation; no autonomous smart sensor capability.	Choose ZSSC3240CL3R for self-contained smart sensor modules needing zero-host calibration, diagnostics, and analog output without firmware development.

Compared with the AD779x series, ZSSC3240CL3R integrates correction math, NVM, and DAC-reducing BOM count and eliminating host-side calibration code. Versus the ICM-42688-P, it supports resistive sensors and analog outputs but lacks MEMS functionality-making it purpose-built for bridge-based industrial and medical sensing.

Availability

ZSSC3240CL3R is available at Aetrix Electronics and suitable for industrial pressure transducers, medical blood pressure monitors, HVAC temperature controllers, and automotive fluid level sensors requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for ZSSC3240CL3R 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 sensor solutions for industrial, automotive, and IoT applications.

The ZSSC3240CL3R belongs to Renesas' Smart Sensor Signal Conditioning product line, designed to enable autonomous, calibrated, and diagnostics-enabled smart sensors for harsh-environment industrial and safety-critical medical systems.

FAQ

What sensor types does the ZSSC3240CL3R support?

The ZSSC3240CL3R supports resistive bridge sensors (full/half-bridge), 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 device uses its on-chip current source or ratiometric supply to excite these elements, and its 24-bit math core applies sensor-specific correction coefficients stored in NVM-ensuring accurate output across temperature and time without external calibration hardware. This makes ZSSC3240CL3R ideal for high-stability pressure, flow, and temperature modules.

Does the ZSSC3240CL3R provide analog output options beyond voltage?

Yes, the ZSSC3240CL3R supports three analog output configurations: absolute voltage (0–1 V or 0–5 V), VDD-ratiometric voltage (2.5–97.5% of VDD), and 4–20 mA current-loop output. The current-loop mode uses the AOUT/OWI1 pin combined with FB and OWI2in for feedback control, and supports external JFET regulation via LDOctrl for operation up to 48 V supply. This eliminates the need for external loop drivers or DACs-reducing bill-of-materials and board space while enabling direct integration into industrial 4–20 mA infrastructure. All outputs are programmable and can be updated dynamically via I²C, SPI, or OWI.

How does the ZSSC3240CL3R handle temperature compensation?

The ZSSC3240CL3R performs comprehensive temperature compensation using both its on-chip temperature sensor and support for external temperature sensing via the TEXT pin (for diodes or RTDs) or VDDB/VSSB (bridge-as-thermometer). Its 26-bit math core executes correction algorithms that apply stored coefficients to compensate for sensor offset, sensitivity drift, and nonlinearity across temperature. Calibration data-including 24-bit SSC coefficients-is stored in reprogrammable NVM, allowing field updates. This dual-path thermal sensing and correction ensures ≤0.01% FSO accuracy over -40°C to +125°C-critical for medical and industrial applications where thermal stability is mandated by ANSI/AAMI SP10 or IEC 61508.

Can the ZSSC3240CL3R operate from a 24 V supply?

Yes, the ZSSC3240CL3R can operate from a 24 V supply using its LDOctrl pin to drive an external JFET or bipolar transistor, extending the effective VDD range from the native 2.7–5.5 V up to 48 V. This configuration regulates the internal VDD rail to 4.6–5.5 V while allowing the device to interface directly with 24 V industrial loops-ideal for current-loop output applications. The external transistor is controlled via analog feedback from the LDOctrl output, and recommended operating conditions specify 80–120 nF capacitance between VDD and VSS for stability. This capability makes ZSSC3240CL3R uniquely suited for loop-powered smart sensors without auxiliary DC-DC converters.

What diagnostics does the ZSSC3240CL3R include for functional safety?

The ZSSC3240CL3R includes on-chip diagnostics covering sensor connection (open/short detection), broken-chip integrity (chipping-check), and NVM memory integrity (CRC validation). These are accessible via the CHECK_DIAG command and reported in the diagnostic register. The EOC pin provides end-of-conversion signaling, and interrupt thresholds (TRSH1/TRSH2) allow configurable event-triggered alerts. While not ASIL-certified out-of-box, these features support ASIL-B–level decomposition in system-level safety architectures-enabling use in medical monitors (IEC 62304) and industrial controllers (IEC 61508). All diagnostics are self-contained and require no host intervention, making ZSSC3240CL3R suitable for fail-safe smart sensor designs.

ZSSC3240CL3R Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Package/Case:: 24-VFQFN Exposed Pad

Series:: -

Packaging:: Tape & Reel (TR)

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:: 24-VFQFPN (4x4)

ZSSC3240CL3R FAQ

1.How can I place an order for ZSSC3240CL3R through Aetrix?

Please submit a Request for Quotation (RFQ) for ZSSC3240CL3R 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 ZSSC3240CL3R reliable?

The price and inventory of ZSSC3240CL3R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSSC3240CL3R is usually 5 days.

3.What payment methods are accepted for ZSSC3240CL3R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSSC3240CL3R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZSSC3240CL3R?

ZSSC3240CL3R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZSSC3240CL3R 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 ZSSC3240CL3R?

For technical support, including ZSSC3240CL3R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSSC3240CL3R requirements.

6.How does Aetrix verify that ZSSC3240CL3R is sourced from the original manufacturer or authorized distributors?

All ZSSC3240CL3R 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 ZSSC3240CL3R meets industry standards.

7.What is the process for return or replacement of ZSSC3240CL3R?

All ZSSC3240CL3R units undergo pre-shipment inspection (PSI). If there is an issue with ZSSC3240CL3R, 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 ZSSC3240CL3R part is unused and in its original packaging.

Return procedure for ZSSC3240CL3R:

1.Submit a request within 90 days.

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

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