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Renesas ZSSC3240CI3R
- Part No.:
- ZSSC3240CI3R
- Manufacturer:
- Renesas
- Category:
- Sensor and Detector Interfaces
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
ZSSC3240CI3R.pdf
- Description:
- IC SENSOR SIGNAL COND 24VFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:2,788
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Product details
Overview
ZSSC3240CI3R 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 enables smart analog/digital sensor modules in industrial pressure, flow, and medical blood pressure sensing.
For engineers reviewing the ZSSC3240CI3R datasheet, ZSSC3240CI3R pinout, ZSSC3240CI3R application, or ZSSC3240CI3R equivalent, key selection criteria include supported sensor configurations (ratiometric/current-mode), programmable measurement scheduling, on-chip diagnostics (sensor connection, memory integrity), and analog output flexibility (0–1V, 0–5V, ratiometric, 4–20mA).
Technical Context
The ZSSC3240CI3R integrates a 24-bit math core executing sensor-specific correction algorithms using calibration coefficients stored in reprogrammable NVM. Its analog front-end includes a programmable-gain amplifier (1.32–540 V/V gain), dual-stage PGA, and configurable ADC with 12–24-bit resolution selectable per application.
Digital interface support includes SPI up to 10 MHz, I²C (Standard/Fast/High-Speed modes), and OWI up to 100 kbit/s. Three operating modes-wake-up-on-request, continuous/fast-response, and automatic cyclic measurement-enable optimization across energy consumption, update rate, accuracy, and self-diagnostic coverage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | Configurable 12/16/24-bit; determines raw conversion precision and noise floor for sensor signal digitization. |
| DAC Resolution | 13–16-bit; enables precise analog output scaling for voltage (0–1V, 0–5V) or ratiometric (2.5–97.5% VDD) outputs. |
| Supply Voltage (VDD) | 2.7–5.5 V; supports direct battery or rail-powered systems; extended range (5–48 V) possible with external JFET regulation via LDOctrl. |
| Sensor Resistance Range | 0.5 kΩ to 60 kΩ; accommodates standard Pt100, strain gauges, and custom bridge elements without external biasing. |
| Operating Temperature | -40°C to +125°C; qualified for harsh industrial and automotive under-hood environments. |
| Interface Options | I²C, SPI (up to 10 MHz), and One-Wire Interface (OWI); allows flexible host integration with minimal pin count or legacy bus compatibility. |
| Total Accuracy Error | ≤0.01% FSO (Full Scale Output); includes offset, gain, temperature drift, and nonlinearity correction applied in real time. |
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 span ±700 mV. |
| VDDB / VSSB | Ratiometric sensor supply rails | Provides regulated 1.68–1.80 V analog supply for bridge excitation; enables ratiometric measurement immunity to supply variation. |
| AOUT / OWI1 | Multi-function terminal | Delivers corrected analog output (voltage or current-loop) or serves as bidirectional OWI data line; includes short-circuit protection (10–12 mA limit). |
| MOSI/SDA, SCLK/SCL, MISO, SS | Digital interface pins | Support concurrent SPI/I²C operation; SCLK/SCL referenced to VDD; internal pull-ups on MOSI/SDA and SS simplify host connection. |
| RESQ | Active-low reset input | Hardware reset with internal pull-up; enables deterministic initialization independent of power-on-reset timing. |
| LDOctrl | Analog control output | Drives external transistor (e.g., JFET) to regulate VDD beyond 5.5 V; supports 4.6–5.5 V target level with programmable feedback. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable measurement scheduler | Enables cyclic sensing with user-defined trade-offs between update rate (up to 2.91 kHz), power (as low as 3.5 µA avg), and diagnostic coverage. |
| On-chip diagnostics | Detects open/short sensor connections, memory corruption, and chip integrity faults-critical for functional safety in industrial and medical systems. |
| External temperature sensing | Supports Pt100, NTC/PTC thermistors, or diode-based sensors via TEXT pin with built-in 150 Ω series resistor for ESD protection. |
| Flexible analog output configuration | Single pin (AOUT/OWI1) delivers absolute voltage (0–1V/0–5V), ratiometric output, or 4–20 mA current loop-reducing BOM count and PCB footprint. |
| Reprogrammable NVM | Stores calibration coefficients, device configuration, and correction algorithms; field-upgradable without hardware change. |
Applications
| Industrial Pressure Sensing | Medical Blood Pressure Monitoring |
|---|---|
Use Scenario: High-stability pressure transducers in factory automation and hydraulic control systems requiring long-term drift compensation and EMC robustness. IC Role / Device Role / Timing Role: Primary signal conditioner performing real-time offset, sensitivity, and temperature drift correction on bridge sensor outputs. Use Value: Achieves ≤0.01% FSO total error over -40°C to +125°C, eliminating need for external calibration hardware or firmware compensation routines. |
Use Scenario: Portable and wearable blood pressure monitors needing ultra-low-power cyclic measurements and analog output compatibility with analog front-end ADCs. IC Role / Device Role / Timing Role: Smart sensor hub delivering calibrated digital (I²C/SPI) and analog (0–5V ratiometric) outputs synchronized to host system timing. Use Value: Enables <3.5 µA average current draw in cyclic mode while maintaining 16-bit corrected output resolution-extending battery life in Class II medical devices. |
| Smart HVAC Temperature Control | Consumer Weight Scales |
Use Scenario: Precision RTD (Pt100) or thermistor-based room/duct temperature sensing in energy-efficient HVAC controllers with analog 4–20 mA loop integration. IC Role / Device Role / Timing Role: Sensor interface IC providing current-loop output with built-in diagnostics for open-sensor detection and memory integrity verification. Use Value: Eliminates external current-loop driver IC and discrete diagnostics circuitry-reducing bill-of-materials and enabling single-chip loop-powered sensor nodes. |
Use Scenario: High-resolution load-cell interfaces in digital kitchen or bathroom scales requiring fast wake-up response and stable ratiometric analog output. IC Role / Device Role / Timing Role: Low-latency signal conditioner supporting wake-up-on-request mode with sub-100 µs DAC settling for immediate display update after button press. Use Value: Delivers 16-bit DAC output with ≤150 µs settling time and integrated PGA gain control-enabling <1 mg resolution without external op-amps or reference buffers. |
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 DSP; no dedicated resistive sensor front-end, no programmable DAC, no NVM for sensor calibration. | Targets motion sensing (accelerometer/gyro), not bridge/Pt100 conditioning; lacks analog output and ratiometric support. | Choose only if motion fusion-not resistive sensor correction-is the primary requirement. |
| 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; no autonomous cyclic operation or diagnostics. | Select when full system-level control of correction logic is preferred and analog output is handled externally. |
Compared with the ZSSC3240CI3R, the ICM-20948 lacks resistive sensor signal conditioning capability entirely, while the AD7798 provides raw ADC functionality but requires external processing and output circuitry-making the ZSSC3240CI3R uniquely suited for self-contained, calibrated smart sensor modules with analog/digital dual outputs.
Availability
ZSSC3240CI3R is available at Aetrix Electronics and suitable for industrial pressure sensing, medical blood pressure monitoring, and HVAC temperature control requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for ZSSC3240CI3R 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, and power solutions for industrial, automotive, and IoT applications.
The ZSSC3240CI3R belongs to Renesas' Sensor Signal Conditioner product line, designed specifically to enable high-accuracy, low-power, and functionally safe smart sensors for demanding industrial and medical instrumentation.
FAQ
What sensor types does the ZSSC3240CI3R support?
The ZSSC3240CI3R supports resistive bridge and half-bridge sensors, Pt100 RTDs, NTC/PTC thermistors, and external temperature diodes. It accepts sensor resistances from 0.5 kΩ to 60 kΩ and provides both ratiometric and current-mode excitation via VDDB/VSSB and TEXT pins. The ZSSC3240CI3R's programmable front-end eliminates need for external biasing components in most configurations.
Does the ZSSC3240CI3R support true 4–20 mA current-loop output?
Yes, the ZSSC3240CI3R supports 4–20 mA current-loop output using its AOUT/OWI1 pin combined with the FB pin and an external bipolar transistor. The internal LDOctrl output drives the external regulator to maintain stable loop voltage, and the ZSSC3240CI3R handles full digital correction before DAC conversion-ensuring calibrated current output without external op-amps or DACs.
How is calibration performed on the ZSSC3240CI3R?
Calibration coefficients for offset, sensitivity, temperature drift, and nonlinearity are stored in the ZSSC3240CI3R's reprogrammable nonvolatile memory (NVM) and applied in real time by its 24-bit math core. Calibration is performed externally using Renesas-provided software tools and executed via I²C, SPI, or OWI-no special programming hardware is required, and coefficients can be updated in-system or in-field.
Can the ZSSC3240CI3R operate with supply voltages above 5.5 V?
Yes, the ZSSC3240CI3R supports extended supply operation from 5 V to 48 V using its LDOctrl pin to drive an external transistor (e.g., JFET). The ZSSC3240CI3R regulates its internal VDD target between 4.6 V and 5.5 V, enabling robust operation in high-voltage industrial loops while maintaining full functionality of all analog and digital peripherals.
What diagnostics does the ZSSC3240CI3R provide for functional safety compliance?
The ZSSC3240CI3R includes on-chip diagnostics for sensor connection (open/short detection), memory integrity (NVM CRC check), and chip-level integrity (broken-chip/chipping-check). These diagnostics are accessible via status registers and interrupt signaling (EOC pin), supporting ASIL-B readiness in industrial and medical applications without requiring external monitoring circuitry.
ZSSC3240CI3R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- 24-VFQFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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, Wettable Flank
- Supplier Device Package:
- 24-VFQFPN (4x4)
ZSSC3240CI3R FAQ
1.How can I place an order for ZSSC3240CI3R through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSSC3240CI3R 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 ZSSC3240CI3R reliable?
The price and inventory of ZSSC3240CI3R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSSC3240CI3R is usually 5 days.
3.What payment methods are accepted for ZSSC3240CI3R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSSC3240CI3R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZSSC3240CI3R?
ZSSC3240CI3R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSSC3240CI3R 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 ZSSC3240CI3R?
For technical support, including ZSSC3240CI3R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSSC3240CI3R requirements.
6.How does Aetrix verify that ZSSC3240CI3R is sourced from the original manufacturer or authorized distributors?
All ZSSC3240CI3R 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 ZSSC3240CI3R meets industry standards.
7.What is the process for return or replacement of ZSSC3240CI3R?
All ZSSC3240CI3R units undergo pre-shipment inspection (PSI). If there is an issue with ZSSC3240CI3R, 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 ZSSC3240CI3R part is unused and in its original packaging.
Return procedure for ZSSC3240CI3R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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