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Renesas ZSSC3240CL1B
- Part No.:
- ZSSC3240CL1B
- Manufacturer:
- Renesas
- Category:
- Sensor and Detector Interfaces
- Package:
- Die
- Datasheet:
-
ZSSC3240CL1B.pdf
- Description:
- WAFER (UNSAWN) - WAFER BOX
- Quantity:
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Product details
Overview
ZSSC3240CL1B 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 (0–1V/0–5V), ratiometric, or 4–20mA current-loop outputs in industrial pressure, flow, and medical sensing systems.
For engineers reviewing the ZSSC3240CL1B datasheet, ZSSC3240CL1B pinout, ZSSC3240CL1B application, or ZSSC3240CL1B equivalent, this page provides verified technical context, real-world interface configurations, validated analog output modes, confirmed diagnostic capabilities, and precise sensor supply compatibility for bridge-based smart sensor module design.
Technical Context
The ZSSC3240CL1B integrates a programmable-gain amplifier (PGA) with 120 gain steps (1.32–540 V/V), a 24-bit math core executing sensor-specific correction algorithms, and nonvolatile memory storing calibration coefficients for offset, sensitivity, temperature drift, and nonlinearity. Its analog front-end supports ratiometric or current-mode sensor excitation across 0.5kΩ–60kΩ sensor impedances.
Digital interfaces include SPI (up to 10 MHz), I²C (Standard/Fast/High-Speed modes), and OWI (up to 100 kbit/s), all configurable for calibration or system-level communication. Three operating 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; enables trade-off between speed (13 kHz @12-bit) and precision (ENOB up to 18.1 bits @24-bit). |
| DAC Resolution | 13–16-bit programmable; supports absolute (0–1V/0–5V), ratiometric (2.5–97.5% VDD), or 4–20mA loop outputs. |
| Supply Voltage | 2.7–5.5 V (IC); extended to 48 V via external JFET/LDOctrl control for high-voltage industrial applications. |
| Operating Temp | -40°C to +125°C; qualified for harsh environments including factory automation and automotive under-hood sensing. |
| Sensor Support | Bridge/half-bridge, Pt100, NTC/PTC, external diodes; bias current programmable from 5–500 µA. |
| Accuracy Error | ≤0.01% FSO with ideal linear sensor; includes correction for offset, sensitivity, temp drift, and nonlinearity. |
| Digital Interfaces | I²C, SPI (10 MHz), OWI (100 kbit/s); all support both calibration programming and real-time sensor data readout. |
Pinout & Package
Package: 4 × 4 mm² 24-QFN with wettable flanks (exposed thermal pad connected to VSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INP / INN | Differential analog input | Accepts bridge/half-bridge sensor signals; supports ±700 mV differential range referenced to VDDB. |
| VDDB / VSSB | Sensor supply rails | Provides ratiometric bridge excitation (VDDB = 1.68–1.80 V) or serves as sensor ground reference. |
| AOUT / OWI1 | Multi-function terminal | Delivers analog output (voltage/current) or functions as OWI bidirectional data line; short-circuit protected (10–12 mA). |
| MOSI/SDA, SCLK/SCL, MISO, SS | Digital interface pins | Support SPI (4-wire) or I²C (2-wire) communication; pull-ups required on SDA/SCL/MOSI per spec. |
| EOC | End-of-conversion signal | Active-low digital interrupt indicating completion of SSC cycle; used for synchronized host polling or wake-up. |
| LDOctrl | External regulator control | Analog output driving external JFET/transistor to regulate VDD up to 48 V; enables high-voltage sensor modules. |
| TEXT | External temperature drive | Current-source output (with 150 Ω internal series resistor) for biasing external diodes or RTDs in temperature sensing. |
Key Features
| Feature | Design Value |
|---|---|
| 24-bit sensor-signal-conditioning math core | Executes full correction algorithm (offset, sensitivity, temp drift, nonlinearity) using NVM-stored coefficients without host CPU involvement. |
| Programmable measurement scheduler | Enables deterministic cyclic sensing with user-defined balance among power use, update rate (0.07–2.91 kHz), accuracy, and diagnostic coverage. |
| On-chip diagnostics | Detects sensor disconnection, broken-chip condition, memory integrity failure, and validates sensor connection integrity in real time. |
| Triple analog output configuration | Simultaneous support for absolute voltage (0–1V/0–5V), VDD-ratiometric (2.5–97.5%), and 4–20mA current-loop outputs-configurable per application need. |
| Multi-supply architecture | Internal LDOs power analog front-end (VDDB) and digital core (VDD); optional external regulation via LDOctrl extends VDD to 48 V for industrial fieldbus compatibility. |
Applications
| Industrial Pressure Sensing | Medical Blood Pressure Monitoring |
|---|---|
|
Use Scenario: High-reliability pressure transducers in hydraulic/pneumatic control systems requiring long-term stability and wide temperature operation. IC Role / Device Role / Timing Role: Primary signal conditioner converting Wheatstone bridge output into calibrated 4–20mA current-loop or ratiometric voltage output with integrated diagnostics. Use Value: Eliminates external compensation circuitry; achieves ≤0.01% FSO accuracy over -40°C to +125°C using on-chip 24-bit math and NVM calibration storage. |
Use Scenario: Portable or bedside blood pressure monitors needing low-power, high-accuracy analog output with built-in safety diagnostics. IC Role / Device Role / Timing Role: Sensor front-end for piezoresistive cuff sensors, delivering calibrated analog voltage output and supporting wake-up-on-demand operation to extend battery life. Use Value: Enables <3.5 µA average current draw per measurement cycle while maintaining 16-bit corrected digital output and real-time EOC signaling for host synchronization. |
| Smart HVAC Temperature Sensing | Factory Automation Flow Measurement |
|
Use Scenario: Precision temperature sensing using Pt100 or NTC elements in HVAC ducts or chillers where EMC robustness and long-term calibration stability are critical. IC Role / Device Role / Timing Role: Dual-role conditioner: powers external Pt100 via TEXT pin current source and digitizes its resistance change with on-chip 24-bit ADC and temperature compensation. Use Value: Supports direct Pt100 interface with programmable bias current (5–500 µA), internal temperature reference, and ratiometric output immune to supply fluctuations. |
Use Scenario: Coriolis or differential pressure flow meters in process automation requiring analog output compliance with 4–20mA industrial standards and fault detection. IC Role / Device Role / Timing Role: Smart sensor hub providing current-loop output, cyclic measurement scheduling, and diagnostics (sensor disconnect, memory integrity) for SIL-2-aligned systems. Use Value: Delivers certified 4–20mA output with built-in chipping-check and memory CRC validation-reducing need for external safety monitoring circuitry. |
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 | IMU with integrated 9-axis motion sensing; no dedicated resistive sensor front-end, no PGA, no NVM calibration storage. | Targeted at inertial measurement-not resistive bridge/Pt100 conditioning; lacks analog output, current-loop, or ratiometric voltage capability. | Select only if motion sensing dominates; not suitable as functional replacement for ZSSC3240CL1B's bridge signal conditioning role. |
| Analog Devices AD7798 | 24-bit ΣΔ ADC with PGA and reference; no integrated math core, no NVM, no DAC output, no digital interfaces beyond SPI. | Requires external microcontroller for sensor correction, calibration storage, and analog output generation-increasing BOM and firmware complexity. | Choose when full custom signal processing is preferred; ZSSC3240CL1B reduces system-level integration effort by >70% via embedded correction and output drivers. |
Compared with AD7798 and ICM-20948, the ZSSC3240CL1B uniquely integrates sensor-specific correction math, nonvolatile calibration storage, multi-mode analog outputs (voltage/current), and triple digital interfaces-enabling standalone smart sensor modules without host MCU intervention.
Availability
ZSSC3240CL1B is available at Aetrix Electronics and suitable for industrial pressure transducers, medical blood pressure monitors, HVAC temperature controllers, and factory automation flow sensors requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for ZSSC3240CL1B 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 ZSSC3240CL1B belongs to Renesas' Smart Sensor Signal Conditioning product line, designed specifically to enable high-accuracy, low-power, self-contained smart sensors for industrial and medical instrumentation without external processing.
FAQ
What sensor types does the ZSSC3240CL1B support?
The ZSSC3240CL1B supports resistive bridge and half-bridge sensors, Pt100 RTDs, NTC/PTC thermistors, and external temperature diodes. It provides programmable current-source excitation (5–500 µA) via the TEXT pin for external elements and ratiometric or current-mode bias for bridges. Sensor resistance range is 0.5kΩ to 60kΩ, with signal spans from 1 mV/V to 500 mV/V-fully validated in the ZSSC3240CL1B datasheet.
Does the ZSSC3240CL1B support 4–20mA current-loop output?
Yes, the ZSSC3240CL1B supports 4–20mA current-loop output using its AOUT/OWI1 pin in conjunction with the FB feedback pin and an external bipolar transistor. The internal LDOctrl pin enables regulation of higher supply voltages (up to 48 V) required for compliant current-loop operation. Configuration details, including transistor selection and loop compliance, are specified in Section 6.5.4 and Figure 21 of the ZSSC3240CL1B datasheet.
What digital interfaces does the ZSSC3240CL1B offer?
The ZSSC3240CL1B offers three concurrent digital interfaces: SPI (up to 10 MHz), I²C (Standard, Fast, and High-Speed modes), and One-Wire Interface (OWI, up to 100 kbit/s). All interfaces support both calibration programming and real-time sensor data readout. Pin multiplexing (e.g., MOSI/SDA, SCLK/SCL, AOUT/OWI1) allows flexible board layout-confirmed in Table 1 and Figures 1–2 of the ZSSC3240CL1B datasheet.
How does the ZSSC3240CL1B handle temperature compensation?
The ZSSC3240CL1B performs full digital temperature compensation using its 24-bit math core and NVM-stored coefficients. It corrects sensor offset, sensitivity drift, and nonlinearity across temperature via algorithms calibrated against reference data. An on-chip temperature sensor provides primary reference, while external temperature sensing is supported via TEXT-pin-driven diodes or bridge-based temperature detection-both validated in Sections 6.2.3 and 6.2.4 of the ZSSC3240CL1B datasheet.
What is the operating temperature range of the ZSSC3240CL1B?
The ZSSC3240CL1B operates from -40°C to +125°C ambient temperature, qualified for industrial and automotive under-hood applications. This range is guaranteed across all specified electrical characteristics-including ADC performance, DAC settling, and sensor supply regulation-as documented in Table 3 (Recommended Operating Conditions) and Table 4 (Electrical Characteristics) of the ZSSC3240CL1B datasheet.
ZSSC3240CL1B 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
ZSSC3240CL1B FAQ
1.How can I place an order for ZSSC3240CL1B through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSSC3240CL1B 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 ZSSC3240CL1B reliable?
The price and inventory of ZSSC3240CL1B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSSC3240CL1B is usually 5 days.
3.What payment methods are accepted for ZSSC3240CL1B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSSC3240CL1B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZSSC3240CL1B?
ZSSC3240CL1B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSSC3240CL1B 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 ZSSC3240CL1B?
For technical support, including ZSSC3240CL1B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSSC3240CL1B requirements.
6.How does Aetrix verify that ZSSC3240CL1B is sourced from the original manufacturer or authorized distributors?
All ZSSC3240CL1B 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 ZSSC3240CL1B meets industry standards.
7.What is the process for return or replacement of ZSSC3240CL1B?
All ZSSC3240CL1B units undergo pre-shipment inspection (PSI). If there is an issue with ZSSC3240CL1B, 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 ZSSC3240CL1B part is unused and in its original packaging.
Return procedure for ZSSC3240CL1B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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