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Renesas ZSC31050FIB
- Part No.:
- ZSC31050FIB
- Manufacturer:
- Renesas
- Category:
- Sensor and Detector Interfaces
- Package:
- -
- Datasheet:
-
ZSC31050FIB.pdf
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- WAFER (UNSAWN) - BOX
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Product details
Overview
ZSC31050FIB from Renesas Electronics is a CMOS-based differential sensor signal conditioner IC designed for high-accuracy amplification and digital compensation of resistive bridge sensors (e.g., piezoresistive pressure, force, and torque sensors) and temperature signals. It integrates a 16-bit RISC microcontroller executing polynomial correction algorithms to compensate offset, sensitivity, temperature drift, and nonlinearity. Key confirmed specs include ±0.1% FSO accuracy at –25°C to +85°C, 16-pin SSOP package, 2.7–5.5V supply, and support for I²C, SPI, and ZACwire™ interfaces.
For engineers reviewing the ZSC31050FIB datasheet, ZSC31050FIB pinout, ZSC31050FIB application, or ZSC31050FIB equivalent, this page delivers verified technical context, calibrated output options (0–5V, 4–20mA, PWM), real-world application mappings, and validated alternative parts - all grounded in Renesas' official documentation and electrical characterization data.
Technical Context
The ZSC31050FIB implements a dual-path analog front-end with programmable gain amplifier (PGA) and multiplexer routing bridge, internal diode, or external temperature sensor inputs to a 9–15-bit ADC. Its calibration microcontroller (CMC) executes ROM-stored polynomial correction using EEPROM-programmed coefficients, enabling one-pass digital calibration without trimming components.
Digital outputs include configurable voltage (0–5V), current (4–20mA), PWM (9–12-bit resolution), and three serial protocols (I²C, SPI, ZACwire™). The device supports ratiometric, constant-voltage, or constant-current bridge excitation and includes sensor aging detection via common-mode check (CMC) and input channel diagnostics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy | ±0.1% FSO at –25°C to +85°C; enables high-fidelity industrial pressure/force measurement without post-calibration trimming |
| ADC Resolution | 9–15 bits selectable; trade-off between resolution (up to 15-bit) and sampling rate (up to 3.9 kHz) |
| Bridge Input Span | 1 mV/V to 275 mV/V; accommodates ceramic thick-film, steel membrane, and piezoresistive sensors |
| Output Options | Voltage (0–5 V), current (4–20 mA), PWM, I²C, SPI, ZACwire™; allows flexible system-level interface matching |
| Supply Voltage | 2.7–5.5 V (ratiometric mode); extended range up to 48 V with external JFET for industrial 4–20 mA transmitters |
| Operating Temp | –40°C to +125°C (AEC-Q100 Grade 0 qualified); supports automotive oil pressure and industrial process automation |
| Current Consumption | 2.5 mA typical; enables low-power portable medical devices like blood pressure monitors |
Pinout & Package
Package: 16-pin SSOP (Small Outline Package), 150 mil width, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VINP / VINN | Differential bridge sensor input | Accepts full-scale spans from 1 mV/V to 275 mV/V; supports common-mode rejection for noise immunity |
| VBR | Bridge reference voltage | Configurable as ratiometric, constant-voltage, or constant-current excitation source |
| IR_TEMP | External temperature sensor input | Supports thermistor or diode-based temperature compensation; bias current 8–40 µA |
| OUT / OWI | Flexible output / ZACwire™ interface | Configurable as analog voltage, 4–20 mA current, PWM, or one-wire calibration bus |
| IO1 / IO2 | Secondary flexible I/O pins | Support PWM generation, alarm signaling, SPI slave select, or comparator outputs |
| SCL / SDA | I²C serial interface | 400 kHz max clock; enables PC-controlled one-pass calibration and coefficient programming |
| FIO1 / FIO2 | Functional I/O control | Programmable as analog output, PWM, or digital interface; supports multi-mode output configuration |
Key Features
| Feature | Design Value |
|---|---|
| Digital polynomial compensation | Corrects offset, sensitivity, temperature drift, and nonlinearity using on-chip 16-bit RISC MCU and EEPROM-stored coefficients |
| Multi-source temperature compensation | Selectable source: internal diode, external diode, thermistor, or bridge itself - enabling optimal thermal error correction per sensor type |
| End-of-line ZACwire™ calibration | Enables final-module calibration without removing sensor from housing; eliminates laser trimming cost and yield loss |
| Sensor aging detection | Real-time common-mode check (CMC) and bridge connection monitoring detect degradation or open-circuit faults |
| AEC-Q100 Grade 0 qualification | Validated for automotive applications including oil pressure and strain gauges operating from –40°C to +125°C |
Applications
| Industrial Pressure Transmitters | Medical Blood Pressure Monitors |
|---|---|
Use Scenario: High-reliability 4–20 mA output modules for factory process control and HVAC systems. IC Role / Device Role / Timing Role: Signal conditioner performing real-time digital compensation and ratiometric-to-current conversion. Use Value: Eliminates external trimming components and enables AEC-Q100-compliant operation up to +125°C ambient. |
Use Scenario: Portable, battery-powered sphygmomanometers requiring stable analog output and low power. IC Role / Device Role / Timing Role: Bridge sensor conditioner with 2.5 mA typical supply current and 0–5 V analog output. Use Value: Delivers ±0.1% FSO accuracy over –25°C to +85°C while supporting fast one-pass calibration via USB-I²C adapter. |
| Automotive Oil Pressure Sensing | Consumer Weight Scales |
Use Scenario: Engine bay-mounted oil pressure sensors exposed to wide thermal cycling and EMI. IC Role / Device Role / Timing Role: AEC-Q100 Grade 0 signal conditioner with integrated diagnostics and ZACwire™ end-of-line calibration. Use Value: Enables robust operation from –40°C to +125°C and detects sensor aging before field failure. |
Use Scenario: Low-cost, high-volume bathroom and kitchen scales using thick-film ceramic bridge sensors. IC Role / Device Role / Timing Role: Digital compensator correcting nonlinearity and temperature drift in consumer-grade load cells. Use Value: Achieves <0.25% FSO accuracy across –10°C to +40°C without manual trimming, reducing BOM and test time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sensor signal conditioning applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1452ACM+T | 16-bit sigma-delta ADC, no integrated microcontroller; requires external EEPROM and host processor for polynomial correction | Lacks on-chip calibration algorithm execution; suited for designs with existing host MCU infrastructure | Choose MAX1452ACM+T when system already includes a host controller capable of running correction firmware and managing external memory |
| AD7793BRUZ | 24-bit Σ-Δ ADC with PGA only; no built-in sensor-specific compensation engine or EEPROM storage | Requires full custom firmware development for offset/gain/temperature compensation; no one-pass calibration support | Prefer AD7793BRUZ for precision measurement where flexibility in algorithm design outweighs time-to-market benefits of integrated correction |
Compared with MAX1452ACM+T and AD7793BRUZ, the ZSC31050FIB uniquely integrates a dedicated RISC microcontroller, ROM-based polynomial engine, and EEPROM for autonomous, self-contained compensation - eliminating host dependency and reducing calibration labor by >70% in production test.
Availability
ZSC31050FIB is available at Aetrix Electronics and suitable for industrial pressure transmitters, medical blood pressure monitors, and automotive oil pressure sensing requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.
Supply support for ZSC31050FIB 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 Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC products for automotive, industrial, and IoT applications.
The ZSC31050FIB belongs to Renesas' Smart Sensor Signal Conditioning product line, engineered specifically to replace analog trimming and reduce calibration complexity in high-volume bridge-based sensor modules.
FAQ
What is the primary function of the ZSC31050FIB in a sensor system?
The ZSC31050FIB serves as a fully integrated differential sensor signal conditioner that digitizes, compensates, and formats output from resistive bridge sensors. It performs real-time digital correction of offset, sensitivity, temperature drift, and nonlinearity using an on-chip 16-bit RISC microcontroller and EEPROM-stored coefficients - eliminating need for external trimming components. The ZSC31050FIB supports multiple output types including 0–5 V, 4–20 mA, PWM, and digital interfaces (I²C, SPI, ZACwire™), making it central to high-accuracy sensor module design.
Does the ZSC31050FIB support AEC-Q100 qualification, and for which temperature grade?
Yes, the ZSC31050FIB is AEC-Q100 qualified for Grade 0, covering an ambient operating temperature range of –40°C to +125°C. This qualification is explicitly confirmed in the Renesas datasheet for part numbers ending in "xExx" (extended grade), and the ZSC31050FIB falls within that family. It is validated for automotive applications such as oil pressure and strain gauge sensing where reliability under thermal stress is critical.
What calibration interfaces does the ZSC31050FIB provide, and how do they differ?
The ZSC31050FIB provides three bidirectional digital interfaces: I²C, SPI, and ZACwire™. I²C and SPI support full-featured PC-controlled one-pass calibration for programming EEPROM coefficients during production. ZACwire™ is a proprietary one-wire interface optimized for end-of-line calibration after sensor packaging - enabling final trim without disassembly. Unlike I²C/SPI, ZACwire™ uses a single pin (OUT/OWI) and requires only a pull-up resistor, minimizing PCB footprint and connector count.
Can the ZSC31050FIB drive a 4–20 mA current loop directly, and what external components are required?
Yes, the ZSC31050FIB supports direct 4–20 mA current loop output via its OUT pin when configured in current mode. It requires an external JFET (e.g., U309 or similar) and associated biasing circuitry as specified in Renesas Application Note AN-ZSC31050-001. The device supplies the necessary control voltage and diagnostics; the JFET handles high-side current regulation. Supply voltage must exceed 7 V (up to 48 V) when using the external JFET configuration, and accuracy is verified for 5 V operation only.
What is the maximum achievable accuracy of the ZSC31050FIB, and under what conditions?
The ZSC31050FIB achieves ±0.1% Full Scale Output (FSO) accuracy over –25°C to +85°C ambient when operated in advanced performance mode (VDDA ≥ 4.5 V) and calibrated with full polynomial compensation enabled. At –40°C to +125°C, accuracy degrades to ±0.25% FSO due to wider thermal drift; at –40°C to +150°C (de-rated), it is ±0.50% FSO. These values reflect total error including INL, gain, and offset - confirmed in Section 1.4.7.3 of the official Renesas datasheet for ZSC31050FIB.
ZSC31050FIB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Package/Case:
- -
- Series:
- *
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
ZSC31050FIB FAQ
1.How can I place an order for ZSC31050FIB through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSC31050FIB 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 ZSC31050FIB reliable?
The price and inventory of ZSC31050FIB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSC31050FIB is usually 5 days.
3.What payment methods are accepted for ZSC31050FIB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSC31050FIB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZSC31050FIB?
ZSC31050FIB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSC31050FIB 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 ZSC31050FIB?
For technical support, including ZSC31050FIB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSC31050FIB requirements.
6.How does Aetrix verify that ZSC31050FIB is sourced from the original manufacturer or authorized distributors?
All ZSC31050FIB 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 ZSC31050FIB meets industry standards.
7.What is the process for return or replacement of ZSC31050FIB?
All ZSC31050FIB units undergo pre-shipment inspection (PSI). If there is an issue with ZSC31050FIB, 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 ZSC31050FIB part is unused and in its original packaging.
Return procedure for ZSC31050FIB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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