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Renesas ZSSC3241DI5C
- Part No.:
- ZSSC3241DI5C
- Manufacturer:
- Renesas
- Category:
- Sensor and Detector Interfaces
- Package:
- Die
- Datasheet:
-
ZSSC3241DI5C.pdf
- Description:
- WAFER (SAWN) - FRAME
- Quantity:
- Payment:
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Product details
Overview
ZSSC3241DI5C 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. Used in industrial pressure/flow sensing with analog voltage or 4–20mA current-loop output.
For engineers reviewing the ZSSC3241DI5C datasheet, ZSSC3241DI5C pinout, ZSSC3241DI5C application, or ZSSC3241DI5C equivalent, key selection criteria include supported sensor configurations (ratiometric vs. current-mode), programmable measurement scheduling, dual-domain (analog + digital) output capability, OWI/SPI/I²C interface flexibility, and on-chip diagnostics for sensor connection and memory integrity.
Technical Context
The ZSSC3241DI5C implements a two-stage programmable-gain amplifier (PGA) with 120 gain steps (1.32–540 V/V) and supports differential sensor inputs up to ±1.2 V. Its analog front-end includes internal voltage regulators for VDDB (1.68–1.80 V) and optional external LDO control via LDOctrl pin for supply extension up to 48 V.
Digital signal processing uses a 26-bit math core for full sensor correction (offset, sensitivity, temperature drift, nonlinearity) and a separate 16-bit core for independent analog-output compensation. Calibration coefficients are stored in reprogrammable NVM, enabling field updates without hardware change.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 12–24 bit; selectable resolution directly impacts noise floor and update rate-24-bit mode enables <16 LSB ENOB at low gain for precision bridge sensing. |
| DAC Resolution | 13–16 bit; supports absolute (0–1 V / 0–5 V), ratiometric (2.5–97.5% VDD), or 4–20 mA loop outputs with programmable clipping. |
| Supply Voltage | 2.7–5.5 V (internal regulation); extended to 5–48 V using external JFET + LDOctrl pin-enables direct integration into industrial 24 V loop-powered systems. |
| Operating Temp | –40°C to +125°C; qualified for under-hood automotive and factory automation environments with on-chip temperature sensor and external diode support. |
| Sensor Range | 0.5 kΩ to 60 kΩ; accommodates Pt100, NTC/PTC thermistors, and strain-gauge bridges with signal spans from 1 mV/V to 500 mV/V. |
| Digital Interfaces | SPI (≤10 MHz), I²C (Standard/Fast/HS), OWI (≤100 kbit/s); all support calibration, configuration, and real-time readout-OWI enables single-wire communication alongside analog output. |
| Diagnosis Coverage | On-chip diagnostics include sensor open/short detection, broken-chip check, memory integrity verification, and EOC interrupt signaling-reduces need for external safety monitoring circuitry. |
Pinout & Package
Package: 4 × 4 mm² 24-QFN with wettable flanks (RoHS-compliant, JEDEC MO-220). 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 analog input | Accepts bridge/half-bridge sensor signals; common-mode range 0.7–1.0 V with internal VDDB regulator-supports ratiometric or current-source excitation. |
| VDDB / VSSB | Sensor supply rails | VDDB = regulated analog supply (1.68–1.80 V) for bridge; VSSB = sensor ground reference-enables true ratiometric measurement stability. |
| AOUT / OWI1 | Multi-function terminal | Primary analog output (voltage/current) or OWI bidirectional data line-short-circuit protected (10–12 mA max), allowing concurrent analog + OWI operation. |
| LDOctrl | Analog control output | Drives external JFET for >5.5 V supply regulation; sets target VDD level (4.6–5.5 V) with feedback via FB pin-enables 24 V loop-powered designs. |
| EOC | Digital output | End-of-conversion pulse or configurable interrupt signal-synchronizes host MCU polling or triggers wake-up in low-power cyclic mode. |
| MOSI/SDA, SCLK/SCL, MISO, SS | Digital interface pins | Shared SPI/I²C functionality; pull-ups required on MOSI/SDA and SCLK/SCL-allows flexible host interface selection without PCB redesign. |
Key Features
| Feature | Design Value |
|---|---|
| Dual math cores | 26-bit primary core for full SSC correction + 16-bit secondary core for independent analog-output compensation-enables simultaneous high-fidelity digital output and calibrated analog output. |
| Programmable scheduler | Configurable measurement cycle timing balances energy use, update rate (0.09–2.5 kHz), and self-diagnostic coverage-critical for battery-powered smart sensors. |
| Multi-supply sensor support | Supports ratiometric bridge, current-mode (5–500 µA), and external voltage-source excitation-eliminates need for external bias circuitry across diverse sensor types. |
| Triple interface compatibility | I²C, SPI, and OWI share same physical pins (MOSI/SDA, SCLK/SCL, AOUT/OWI1)-reduces BOM count and enables firmware-selectable communication in production variants. |
| Integrated diagnostics | Detects sensor disconnection, chip integrity faults, and NVM corruption-replaces discrete fault-monitoring components in ASIL-B–capable industrial modules. |
Applications
| Industrial Pressure Sensing | Smart HVAC Temperature Monitoring |
|---|---|
|
Use Scenario: High-stability pressure transducer in compressed air systems with 4–20 mA loop output and I²C calibration interface. IC Role / Device Role / Timing Role: Primary signal conditioner performing PGA amplification, 24-bit ADC conversion, 26-bit polynomial correction, and 4–20 mA DAC output generation. Use Value: Enables single-chip solution replacing discrete op-amps, ADCs, and current-loop drivers-reducing board area by >40% and eliminating manual trim components. |
Use Scenario: Pt100-based room temperature sensor with ratiometric voltage output and OWI configuration port for field recalibration. IC Role / Device Role / Timing Role: Sensor front-end providing current-source excitation, cold-junction compensation, and dual-domain (analog + OWI) output for OEM HVAC controllers. Use Value: Eliminates external RTD bias resistor and reference voltage-improves long-term drift performance to <±0.1°C over 10 years. |
| Medical Blood Pressure Module | Factory Automation Flow Meter |
|
Use Scenario: Disposable blood pressure cuff with integrated half-bridge strain gauge, powered from 3.3 V MCU rail, delivering corrected digital readings via SPI. IC Role / Device Role / Timing Role: Low-power SSC executing cyclic measurements (1.22 kHz update), on-chip temperature compensation, and SPI readout with diagnostic status register access. Use Value: Achieves <0.5% FS total error over –20°C to +50°C-meets ISO 81060-2 clinical accuracy requirements without external calibration hardware. |
Use Scenario: Coriolis flow meter with dual-bridge sensor, requiring synchronized analog voltage output and continuous I²C health monitoring in hazardous-area enclosures. IC Role / Device Role / Timing Role: Dual-domain conditioner generating 0–5 V ratiometric output while streaming real-time diagnostics (sensor connection, memory CRC) over I²C to PLC controller. Use Value: Reduces system-level validation effort by integrating functional safety checks (IEC 61508 SIL2) into signal path-no additional watchdog circuit needed. |
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; no programmable PGA, fixed 16-bit ADC, no analog output or NVM calibration storage. | Targeted at motion sensing only; lacks support for resistive bridges, Pt100, or current-loop outputs. | Choose only for 6-axis inertial sensing-not a functional substitute for ZSSC3241DI5C in resistive sensor applications. |
| Analog Devices AD7798 | 24-bit ΣΔ ADC with PGA and reference; no built-in math core, NVM, or analog output-requires external microcontroller for correction and DAC. | Requires full custom firmware stack for sensor linearization and output generation-increases development time and BOM cost. | Select when full architectural control is needed and system already includes capable MCU; not drop-in for smart sensor modules. |
Compared with ICM-42688-P and AD7798, the ZSSC3241DI5C uniquely integrates correction math, dual-domain outputs, and field-programmable NVM in a single package-enabling certified smart sensor modules with zero external computation and minimal layout footprint.
Availability
ZSSC3241DI5C is available at Aetrix Electronics and suitable for industrial pressure sensing, HVAC temperature monitoring, medical blood pressure modules, and factory automation flow meters requiring stable component supply, long-lifecycle assurance, and RoHS-compliant QFN packaging.
Supply support for ZSSC3241DI5C 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 interface solutions for industrial, automotive, and IoT applications.
The ZSSC3241DI5C belongs to Renesas' Smart Sensor Signal Conditioning product line, designed specifically to enable compact, calibrated, and functionally safe smart sensors for harsh-environment industrial and medical instrumentation.
FAQ
What sensor types does the ZSSC3241DI5C support?
The ZSSC3241DI5C supports resistive bridge and half-bridge sensors, Pt100 RTDs, NTC/PTC thermistors, and external temperature-sensing diodes. It accommodates sensor impedances from 0.5 kΩ to 60 kΩ and signal spans from 1 mV/V to 500 mV/V. The ZSSC3241DI5C provides dedicated current-source excitation and ratiometric voltage supply modes, making it compatible with both legacy and next-generation resistive sensing elements without external bias circuitry.
Does the ZSSC3241DI5C support 4–20 mA current-loop output?
Yes, the ZSSC3241DI5C supports 4–20 mA current-loop output using its AOUT/OWI1 pin in conjunction with the FB pin and an external bipolar transistor. The internal driver delivers 100–160 µA to the transistor base, enabling robust loop driving up to 48 V supply. Configuration is fully programmable via NVM registers, and diagnostics monitor loop integrity-making the ZSSC3241DI5C suitable for industrial process control transmitters compliant with NAMUR NE43.
Can the ZSSC3241DI5C operate with supply voltages above 5.5 V?
Yes, the ZSSC3241DI5C supports extended supply operation from 5 V to 48 V using its LDOctrl pin to drive an external JFET or transistor. The internal LDOctrl circuit regulates VDD to a programmable target (4.6–5.5 V), allowing direct integration into standard 24 V industrial loops. This eliminates the need for external DC-DC converters while maintaining full functionality-including analog output, digital interfaces, and diagnostics-throughout the extended range.
How is calibration handled in the ZSSC3241DI5C?
Calibration coefficients for offset, sensitivity, temperature drift, and nonlinearity are stored in reprogrammable nonvolatile memory (NVM) and applied in real time by the 26-bit math core. The ZSSC3241DI5C supports field updates via I²C, SPI, or OWI-enabling post-manufacture recalibration without hardware change. Coefficients are loaded during power-on or via command, and the NVM retains data for >10 years at 125°C, ensuring long-term accuracy in deployed systems.
What diagnostic capabilities does the ZSSC3241DI5C provide?
The ZSSC3241DI5C includes on-chip diagnostics for sensor connection (open/short detection), broken-chip integrity (chipping-check), memory CRC verification, and EOC interrupt signaling. Diagnostic status is accessible via dedicated register reads over any digital interface. These functions reduce or eliminate the need for external monitoring circuitry in safety-critical applications-supporting compliance with IEC 61508 SIL2 and ISO 13849 PLd requirements when implemented per Renesas' functional safety documentation.
ZSSC3241DI5C 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
ZSSC3241DI5C FAQ
1.How can I place an order for ZSSC3241DI5C through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSSC3241DI5C 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 ZSSC3241DI5C reliable?
The price and inventory of ZSSC3241DI5C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSSC3241DI5C is usually 5 days.
3.What payment methods are accepted for ZSSC3241DI5C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSSC3241DI5C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZSSC3241DI5C?
ZSSC3241DI5C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSSC3241DI5C 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 ZSSC3241DI5C?
For technical support, including ZSSC3241DI5C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSSC3241DI5C requirements.
6.How does Aetrix verify that ZSSC3241DI5C is sourced from the original manufacturer or authorized distributors?
All ZSSC3241DI5C 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 ZSSC3241DI5C meets industry standards.
7.What is the process for return or replacement of ZSSC3241DI5C?
All ZSSC3241DI5C units undergo pre-shipment inspection (PSI). If there is an issue with ZSSC3241DI5C, 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 ZSSC3241DI5C part is unused and in its original packaging.
Return procedure for ZSSC3241DI5C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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