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Renesas ZSSC3241DI1C
- Part No.:
- ZSSC3241DI1C
- Manufacturer:
- Renesas
- Category:
- Sensor and Detector Interfaces
- Package:
- Die
- Datasheet:
-
ZSSC3241DI1C.pdf
- Description:
- WAFER (SAWN) - FRAME
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ZSSC3241DI1C from Renesas is a sensor signal conditioning IC (SSC) for high-accuracy amplification, digitization, and digital correction of resistive sensor signals-including bridge, half-bridge, Pt100, and external diode sensors. It features a 24-bit ADC, 16-bit DAC, dual math cores (26-bit main + 16-bit support), nonvolatile memory for calibration coefficients, and operates from 2.7V to 5.5V across –40°C to 125°C. It enables calibrated smart sensors in industrial pressure and medical blood pressure monitoring.
For engineers reviewing the ZSSC3241DI1C datasheet, ZSSC3241DI1C pinout, ZSSC3241DI1C application, or ZSSC3241DI1C equivalent, key selection considerations include its programmable analog output modes (0–1V/0–5V absolute, ratiometric, 4–20mA), triple digital interface support (I²C/SPI/OWI), cyclic measurement scheduler, on-chip diagnostics, and 24-QFN wettable-flank package for automated optical inspection.
Technical Context
The ZSSC3241DI1C implements a two-stage programmable-gain amplifier (PGA) with 120 gain steps (1.32–540 V/V) and supports both ratiometric and current-mode sensor excitation. Its 24-bit ADC delivers up to 18.1 ENOB at 24-bit resolution with auto-zeroing, while the 16-bit DAC provides configurable voltage or current-loop outputs with <150 µs settling time.
Digital signal conditioning is performed by a dedicated 26-bit math core executing sensor-specific correction algorithms (offset, sensitivity, temperature drift, nonlinearity) using coefficients stored in reprogrammable NVM. A secondary 16-bit math core enables independent analog-output correction-critical for dual-domain (analog + digital) smart sensor modules requiring simultaneous calibrated outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 12–24 bit; selectable resolution directly impacts update rate (up to 5.81 kHz at 12-bit) and noise performance (18.1 ENOB at 24-bit). |
| DAC Resolution | 13–16 bit; enables precise analog output scaling-e.g., 0–1 V (±25 mV offset), 0–5 V, or ratiometric (0.1–100% VDD). |
| Supply Voltage | 2.7 V to 5.5 V (IC core); supports extended 5–48 V operation via external JFET/LDOctrl regulation. |
| Operating Temperature | –40°C to +125°C; qualified for harsh industrial and automotive under-hood environments. |
| Sensor Impedance Range | 0.5 kΩ to 60 kΩ; accommodates full-scale bridge sensors from 1 mV/V to 500 mV/V. |
| Digital Interfaces | I²C (up to 3.4 Mbps), SPI (up to 10 MHz), OWI (up to 100 kbps); all support calibration, configuration, and real-time data readout. |
| On-Chip Diagnostics | Real-time sensor connection check, broken-chip detection, memory integrity verification, and EOC interrupt signaling. |
Pinout & Package
Package: 4 × 4 mm², 24-pin QFN with wettable flanks (exposed thermal pad). Designed for AOI-compatible reflow and enhanced EMC robustness.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INP / INN | Differential analog input | Accepts bridge/half-bridge sensor signals; common-mode range 0.7–1.0 V with internal VDDB = 1.75 V. |
| VDDB / VSSB | Bridge supply and return | Provides ratiometric excitation (VDDB = 1.68–1.80 V) or accepts external voltage/current source for sensor bias. |
| AOUT / OWI1 | Multi-function terminal | Delivers calibrated analog output (voltage or current loop) or serves as OWI bidirectional data line-short-circuit protected to 10–12 mA. |
| EOC | Digital output | End-of-conversion/interrupt signal; asserts after SSC result ready or user-defined threshold crossing. |
| LDOctrl | Analog control output | Drives external transistor (e.g., JFET) to regulate VDD up to 48 V-enables high-voltage industrial sensor modules. |
| MOSI/SDA, SCLK/SCL, MISO, SS | Digital interface I/O | Shared pins for SPI (MOSI/MISO/SCLK/SS) or I²C (SDA/SCL); pull-up required on SDA/SCL/MOSI. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-domain correction | Independent 26-bit main math core (digital output) + 16-bit support core (analog output) enable simultaneous high-fidelity digital and analog outputs without cross-interference. |
| Programmable measurement scheduler | Configurable cyclic operation balances energy use (<3.5 µA avg), update rate (up to 2.5 kHz), and self-diagnostic coverage for functional safety compliance. |
| Triple-interface flexibility | I²C, SPI, and OWI interfaces coexist-allowing field calibration via I²C, high-speed streaming via SPI, and low-pin-count communication via OWI in space-constrained designs. |
| Integrated diagnostics | On-chip sensor connection, chipping-check, and NVM integrity verification reduce need for external BIST circuitry and simplify ASIL-B–level system validation. |
| Current-loop compatibility | FB pin (negative feedback below VSS) and OWI2in enable 4–20 mA loop integration with external bipolar transistor-no additional op-amps or isolators required. |
Applications
| Industrial Pressure Sensing | Medical Blood Pressure Monitoring |
|---|---|
|
Use Scenario: High-stability differential pressure transducer in factory automation systems measuring compressed air or hydraulic fluid. IC Role / Device Role / Timing Role: Primary signal conditioner performing PGA amplification, 24-bit digitization, and 5th-order polynomial temperature-compensated correction of silicon piezoresistive bridge output. Use Value: Delivers ±0.05% FS total error over –25°C to 85°C using on-chip calibration coefficients-eliminating manual trim and enabling single-point factory calibration. |
Use Scenario: Disposable cuff-based sphygmomanometer with integrated analog voltage output for microcontroller ADC sampling. IC Role / Device Role / Timing Role: Smart sensor front-end converting Wheatstone bridge output into ratiometric 0.1–100% VDD analog signal synchronized to MCU clock via EOC interrupt. Use Value: Enables ultra-low-power operation (<6 µA idle) with wake-on-demand and sub-100 µs DAC settling-critical for battery-powered wearable health devices. |
| Smart HVAC Temperature Sensing | White Goods Flow Measurement |
|
Use Scenario: Pt100-based ambient temperature sensor in commercial HVAC controllers requiring long cable runs and EMI immunity. IC Role / Device Role / Timing Role: Excites Pt100 with programmable current source (5–500 µA), digitizes resistance via 24-bit ADC, and applies NIST-traceable linearization in firmware. Use Value: Achieves ±0.1°C accuracy from –40°C to +125°C using built-in Pt100 lookup tables and external diode temperature compensation-reducing BOM cost vs. discrete solutions. |
Use Scenario: Differential flow sensor in washing machine water inlet system detecting low-flow clogs and leak conditions. IC Role / Device Role / Timing Role: Processes half-bridge output with automatic zero-offset cancellation, generates 4–20 mA analog output for PLC interface, and triggers EOC interrupt on flow threshold breach. Use Value: Supports fail-safe diagnostics (sensor disconnect, open-circuit, short-circuit) and delivers calibrated current output immune to supply rail variations-meeting IEC 61000-4-5 surge immunity 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 IMU with integrated DMP; no resistive sensor front-end, no DAC, no NVM calibration storage. | Targets motion sensing only; lacks bridge excitation, temperature compensation math, and analog output capability. | Choose ZSSC3241DI1C for resistive sensor signal chains requiring calibrated analog/digital outputs-not for inertial measurement. |
| Analog Devices AD7798 | 24-bit ΣΔ ADC with PGA and reference; no on-chip math core, no NVM, no DAC, no digital interfaces beyond SPI. | Requires external microcontroller for sensor correction algorithms and output formatting-increasing firmware complexity and latency. | Choose ZSSC3241DI1C when autonomous, self-contained signal conditioning with factory-programmable coefficients is required-avoiding host MCU dependency. |
Compared with the AD7798 and ICM-20948, the ZSSC3241DI1C uniquely integrates sensor-specific correction math, dual-domain outputs, and triple-interface support in a single chip-enabling drop-in replacement of discrete signal chains while reducing calibration effort and system-level timing uncertainty.
Availability
ZSSC3241DI1C is available at Aetrix Electronics and suitable for industrial pressure sensing, medical blood pressure monitoring, and HVAC temperature measurement requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ZSSC3241DI1C 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, infrastructure, and IoT applications.
The ZSSC3241DI1C belongs to Renesas' Sensor Signal Conditioning product line-designed specifically to replace discrete analog front-ends and microcontroller-based correction firmware with a single, calibrated, programmable IC for resistive sensors.
FAQ
What is the primary function of the ZSSC3241DI1C in a sensor system?
The ZSSC3241DI1C serves as a complete sensor signal conditioner for resistive elements-performing precision amplification, 24-bit digitization, and digital correction (offset, sensitivity, temperature drift, nonlinearity) using on-chip 26-bit math and NVM-stored coefficients. It eliminates the need for external ADCs, DACs, and microcontroller-based compensation logic in smart sensor modules.
Does the ZSSC3241DI1C support both analog and digital outputs simultaneously?
Yes, the ZSSC3241DI1C supports concurrent analog and digital outputs via its dual math core architecture: the 26-bit main core computes corrected digital results (S/T values) for I²C/SPI/OWI readout, while the independent 16-bit support core drives the 16-bit DAC for calibrated analog voltage or current-loop output-enabling true dual-domain smart sensors.
What sensor types are compatible with the ZSSC3241DI1C?
The ZSSC3241DI1C supports bridge and half-bridge sensors (1–500 mV/V), resistive divider strings, voltage-source elements, Pt100 RTDs, and external temperature diodes. Its programmable PGA (1.32–540 V/V), 0.5–60 kΩ impedance range, and dual excitation modes (ratiometric voltage or current source) ensure broad resistive sensor adaptability.
How does the ZSSC3241DI1C handle temperature compensation?
The ZSSC3241DI1C performs full digital temperature compensation using its 26-bit math core and factory-programmed NVM coefficients. It supports internal temperature sensing, external diode sensing via TEXT pin, and bridge-as-thermistor configurations-applying multi-order polynomial correction to sensor output across –40°C to +125°C without external components.
Can the ZSSC3241DI1C operate with supply voltages above 5.5 V?
Yes-the ZSSC3241DI1C supports extended supply operation up to 48 V using its LDOctrl pin to drive an external JFET or transistor. This allows direct integration into high-voltage industrial sensor nodes (e.g., 24 V or 48 V loop-powered systems) while maintaining internal 2.7–5.5 V regulation for core functionality.
ZSSC3241DI1C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- Die
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Type:
- Signal Conditioner
- Input Type:
- Analog, Digital
- Output Type:
- 1-Wire®, I2C, SPI
- Current - Supply:
- 18 mA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Wafer
ZSSC3241DI1C FAQ
1.How can I place an order for ZSSC3241DI1C through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSSC3241DI1C 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 ZSSC3241DI1C reliable?
The price and inventory of ZSSC3241DI1C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSSC3241DI1C is usually 5 days.
3.What payment methods are accepted for ZSSC3241DI1C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSSC3241DI1C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZSSC3241DI1C?
ZSSC3241DI1C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSSC3241DI1C 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 ZSSC3241DI1C?
For technical support, including ZSSC3241DI1C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSSC3241DI1C requirements.
6.How does Aetrix verify that ZSSC3241DI1C is sourced from the original manufacturer or authorized distributors?
All ZSSC3241DI1C 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 ZSSC3241DI1C meets industry standards.
7.What is the process for return or replacement of ZSSC3241DI1C?
All ZSSC3241DI1C units undergo pre-shipment inspection (PSI). If there is an issue with ZSSC3241DI1C, 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 ZSSC3241DI1C part is unused and in its original packaging.
Return procedure for ZSSC3241DI1C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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