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Renesas ZSSC3240CI1B
- Part No.:
- ZSSC3240CI1B
- Manufacturer:
- Renesas
- Category:
- Sensor and Detector Interfaces
- Package:
- Die
- Datasheet:
-
ZSSC3240CI1B.pdf
- Description:
- IC SENSOR SIGNAL CONDITIONER
- Quantity:
- Payment:
- Shipping:
Inventory:1,247
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Product details
Overview
ZSSC3240CI1B from Renesas is a sensor signal conditioning IC (SSC) for resistive bridge, half-bridge, Pt100, and external diode sensors, featuring 24-bit ADC resolution, 16-bit DAC output, programmable PGA gain (1.32–540 V/V), on-chip temperature sensing, and digital correction of offset, sensitivity, temperature drift, and non-linearity. It enables calibrated smart sensor modules in industrial pressure and flow measurement systems.
For engineers reviewing the ZSSC3240CI1B datasheet, ZSSC3240CI1B pinout, ZSSC3240CI1B application, or ZSSC3240CI1B equivalent, this page delivers verified technical context, real-world interface configurations (I²C/SPI/OWI), analog output options (0–1V, 0–5V, ratiometric, 4–20mA), and validated alternative parts for sensor front-end design.
Technical Context
The ZSSC3240CI1B integrates a 24-bit sensor-signal-conditioning math core executing calibration algorithms using coefficients stored in reprogrammable NVM. Its analog front-end supports ratiometric or current-mode sensor excitation with VDDB = 1.68–1.80 V and ISUP = 5–500 µA, enabling precise biasing of 0.5–60 kΩ resistive elements.
Digital interfaces include SPI (up to 10 MHz), I²C (Standard/Fast/High-Speed modes), and OWI (up to 100 kbit/s), each supporting full read/write access to raw ADC data, corrected SSC results (S/T), diagnostics registers, and configuration memory. Three operational modes-wake-up-on-request, continuous/fast-response, and automatic cyclic measurement-optimize energy use versus update rate and accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 12–24-bit selectable; determines raw sensor digitization fidelity and noise floor (ENOB up to 18.1 bits at 24-bit mode). |
| DAC Resolution | 13–16-bit programmable; enables high-precision analog outputs including 0–1V, 0–5V, ratiometric (0.1–100% VDD), and 4–20mA loop. |
| PGA Gain Range | 1.32–540 V/V in 120 steps; accommodates sensor spans from 1 mV/V to 500 mV/V without external amplification. |
| Supply Voltage | VDD = 2.7–5.5 V; supports external JFET regulation for extended range (5–48 V) via LDOctrl pin. |
| Operating Temp | -40°C to +125°C; qualified for industrial and automotive under-hood environments with on-chip diagnostics. |
| Sensor Resistance | 0.5–60 kΩ; covers Pt100, NTC/PTC thermistors, strain gauges, and pressure bridge sensors. |
| Interface Options | I²C, SPI, OWI - all support full calibration coefficient programming, real-time measurement readout, and diagnostic register access. |
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 common-mode input up to 1.2 V and differential range ±700 mV. |
| VDDB / VSSB | Sensor supply rails | VDDB provides regulated 1.68–1.80 V ratiometric bridge supply; VSSB serves as dedicated sensor ground reference. |
| AOUT / OWI1 | Multi-function terminal | Delivers analog output (voltage/current) or functions as OWI bidirectional data line; includes short-circuit protection (10–12 mA limit). |
| MOSI/SDA, SCLK/SCL, MISO, SS | Digital interface pins | Support SPI (4-wire) or I²C (2-wire) communication; SCLK/SCL referenced to VDD; internal pull-ups on MOSI/SDA and SS. |
| EOC | Digital interrupt output | Active-low end-of-conversion signal; indicates completion of SSC cycle and triggers host processor wake-up or polling. |
| LDOctrl | Analog control output | Drives external JFET or transistor for >5.5 V VDD regulation; sets target VDD_ldoctrl_target between 4.6–5.5 V. |
| TEXT | External temp. drive | Current-source output (150 Ω series resistor built-in) for biasing external diodes or RTDs; supports VTEXT = 0.5–1.25 V range. |
Key Features
| Feature | Design Value |
|---|---|
| 24-bit math core with NVM | Executes sensor-specific correction algorithms using factory- or field-programmed coefficients; enables one-time or reprogrammable calibration. |
| Triple analog output modes | Configurable 0–1V / 0–5V absolute, VDD-ratiometric (0.1–100%), or 4–20mA current loop - all supported simultaneously with digital interface. |
| On-chip diagnostics | Detects sensor open/short, chip integrity (chipping-check), memory corruption, and supply anomalies - reported via CHECK_DIAG command. |
| Programmable measurement scheduler | Optimizes trade-offs among power consumption (IAVE down to 3.5 µA avg), update rate (up to 2.91 kHz), accuracy, and self-test coverage. |
| Multi-supply topology | Separate VDD (digital core), VDDB (analog sensor front-end), and TEXT (external temp. bias) supplies isolate noise paths and improve PSRR (50 dB @ DC–10 MHz). |
Applications
| Industrial Pressure Sensing | Smart HVAC Temperature Monitoring |
|---|---|
|
Use Scenario: High-accuracy differential pressure measurement in process automation using silicon piezoresistive bridges. IC Role / Device Role / Timing Role: Signal conditioner performing PGA amplification, 24-bit digitization, temperature-compensated linearization, and 4–20mA analog output generation. Use Value: Eliminates external compensation circuitry; achieves ≤0.01% FSO total error over -40°C to 125°C with single-chip calibration. |
Use Scenario: Compact, low-power room temperature sensing using Pt100 RTD in residential HVAC control units. IC Role / Device Role / Timing Role: Provides constant-current excitation (5–500 µA), cold-junction compensation via on-chip sensor, and ratiometric voltage output referenced to VDD. Use Value: Enables direct Pt100 interface without external bias resistors or op-amps; supports wake-up-on-request mode for <6 µA idle current. |
| Medical Blood Pressure Monitoring | White Goods Weight Scales |
|
Use Scenario: Disposable or reusable cuff-based blood pressure transducers requiring clinical-grade accuracy and EMC robustness. IC Role / Device Role / Timing Role: Digitally corrects non-linearity and thermal drift of thin-film bridge sensors; delivers calibrated digital (SPI/I²C) and analog (0–5V) outputs. Use Value: Meets IEC 60601-1 safety requirements via isolated diagnostics and failsafe EOC signaling; CAOUT,EMC capacitor support improves EMI immunity. |
Use Scenario: High-resolution load cell interface in smart washing machines and kitchen scales with auto-zero and overload detection. IC Role / Device Role / Timing Role: Configures PGA gain and ADC oversampling dynamically per load range; uses RESQ pin for hardware reset during power cycling. Use Value: Achieves >100,000-count resolution with integrated offset/temperature compensation; reduces BOM by replacing discrete instrumentation amp + ADC + DAC + MCU. |
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 IMU with integrated ASIC; lacks programmable PGA, NVM calibration storage, and analog output capability. | Targeted at motion sensing (accel/gyro); not suitable for resistive bridge or Pt100 interfacing. | Choose ZSSC3240CI1B for precision resistive sensor conditioning; select ICM-42688-P only for inertial measurement with digital-only output. |
| Analog Devices AD7798 | 24-bit ΣΔ ADC with PGA and reference; no on-chip math core, NVM, DAC, or digital interfaces beyond SPI. | Requires external MCU for sensor correction algorithms and output formatting; no native I²C/OWI or 4–20mA support. | ZSSC3240CI1B provides complete smart sensor solution in one die; AD7798 suits designs where host MCU handles all compensation logic. |
Compared with AD7798 and ICM-42688-P, the ZSSC3240CI1B uniquely integrates sensor-specific correction math, reprogrammable NVM, multi-interface connectivity, and configurable analog outputs - eliminating need for external processing or signal conditioning components in resistive sensor applications.
Availability
ZSSC3240CI1B is available at Aetrix Electronics and suitable for industrial pressure transmitters, HVAC temperature modules, medical blood pressure monitors, and white goods weight scales requiring stable component supply across long production lifecycles.
Supply support for ZSSC3240CI1B 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 ZSSC3240CI1B belongs to Renesas' Sensor Signal Conditioning IC product line, designed specifically to replace discrete front-end circuits with a single-chip solution for high-accuracy resistive sensor interfacing in harsh environments.
FAQ
What sensor types does the ZSSC3240CI1B support?
The ZSSC3240CI1B supports resistive bridge and half-bridge sensors, Pt100 RTDs, NTC/PTC thermistors, and external temperature diodes. It accommodates sensor resistances from 0.5 kΩ to 60 kΩ and signal spans from 1 mV/V to 500 mV/V using its programmable PGA and dual-supply architecture. The ZSSC3240CI1B also enables current-mode excitation for external elements via the TEXT pin.
Does the ZSSC3240CI1B include on-chip temperature sensing?
Yes, the ZSSC3240CI1B integrates an on-chip temperature sensor used for compensating sensor offset, sensitivity, and non-linearity drift. It also supports external temperature sensing via the TEXT pin for biasing diodes or RTDs, and allows simultaneous use of both internal and external references in correction algorithms. This dual-sensing capability is implemented directly in the ZSSC3240CI1B's 24-bit math core.
Can the ZSSC3240CI1B generate a 4–20mA current loop output?
Yes, the ZSSC3240CI1B supports 4–20mA current-loop output using its AOUT/OWI1 pin in conjunction with the FB pin and an external bipolar transistor. Configuration requires setting Aout_setup = 000BIN and connecting the loop+ (7–48 V) and loop− terminals appropriately. The ZSSC3240CI1B provides IDRloop = 100–160 µA drive capability at FB, enabling precise current regulation within the loop.
What digital interfaces does the ZSSC3240CI1B support?
The ZSSC3240CI1B supports three concurrent digital interfaces: SPI (up to 10 MHz), I²C (Standard/Fast/High-Speed modes), and One-Wire Interface (OWI, up to 100 kbit/s). All interfaces provide full access to calibration memory, raw ADC data, corrected SSC results (S/T), and diagnostic registers. The ZSSC3240CI1B allows mixed-mode operation - e.g., SPI for calibration and OWI for runtime readout - without hardware reconfiguration.
How is sensor calibration handled in the ZSSC3240CI1B?
Sensor calibration coefficients are stored in the ZSSC3240CI1B's reprogrammable non-volatile memory (NVM) and applied by its 24-bit math core during signal processing. Calibration can be performed at factory or in-field using standard I²C/SPI/OWI commands; coefficients include 24-bit offset, sensitivity, temperature, and non-linearity terms. The ZSSC3240CI1B executes correction in real time with no host intervention required after initial programming.
ZSSC3240CI1B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- Die
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Resistive
- 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
ZSSC3240CI1B FAQ
1.How can I place an order for ZSSC3240CI1B through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSSC3240CI1B 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 ZSSC3240CI1B reliable?
The price and inventory of ZSSC3240CI1B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSSC3240CI1B is usually 5 days.
3.What payment methods are accepted for ZSSC3240CI1B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSSC3240CI1B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZSSC3240CI1B?
ZSSC3240CI1B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSSC3240CI1B 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 ZSSC3240CI1B?
For technical support, including ZSSC3240CI1B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSSC3240CI1B requirements.
6.How does Aetrix verify that ZSSC3240CI1B is sourced from the original manufacturer or authorized distributors?
All ZSSC3240CI1B 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 ZSSC3240CI1B meets industry standards.
7.What is the process for return or replacement of ZSSC3240CI1B?
All ZSSC3240CI1B units undergo pre-shipment inspection (PSI). If there is an issue with ZSSC3240CI1B, 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 ZSSC3240CI1B part is unused and in its original packaging.
Return procedure for ZSSC3240CI1B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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