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Renesas ZSSC3135BA2R
- Part No.:
- ZSSC3135BA2R
- Manufacturer:
- Renesas
- Category:
- Specialized
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- -
- Datasheet:
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ZSSC3135BA2R.pdf
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- IC INTFACE SPECIALIZED SGNL COND
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Product details
Overview
ZSSC3135BA2R from Integrated Device Technology (IDT) is a CMOS sensor signal conditioner IC designed specifically for piezoresistive bridge sensors in automotive and industrial applications. It provides 13/14-bit ADC resolution, analog gain up to 105, ratiometric analog voltage output (12.4-bit effective), and digital compensation of offset, sensitivity, temperature drift, and non-linearity. It operates from 4.5–5.5 V and supports -40°C to +125°C ambient range in JEDEC-SSOP14 package.
For engineers reviewing the ZSSC3135BA2R datasheet, ZSSC3135BA2R pinout, ZSSC3135BA2R application, or ZSSC3135BA2R equivalent, key selection criteria include its integrated 16-bit RISC microcontroller for on-chip correction, dual output options (ratiometric analog or ZACwire™ One-Wire), external temperature sensor interface, high-voltage protection (±33 V), and AEC-Q100 qualification for harsh environments.
Technical Context
The ZSSC3135BA2R implements a fully differential analog front-end with programmable gain amplifier (PGA), multiplexer, and full-differential switched-capacitor ADC. Its internal 16-bit RISC microcontroller executes sensor-specific correction algorithms stored in ROM, using calibration coefficients written to on-chip EEPROM during one-pass end-of-line calibration.
Signal conditioning includes digital compensation of sensor offset, sensitivity, temperature drift, and non-linearity across -40°C to +125°C. Output is configurable as ratiometric analog voltage (5–95% VDDE, 12-bit DAC) or digital via I²C™ or ZACwire™ One-Wire interface - both supporting EEPROM programming and real-time readout of conditioned sensor data.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ADC Resolution | 13 or 14 bit - determines raw digitization fidelity before digital correction; selectable per application noise/speed trade-off |
| Analog Gain Range | Up to 105 - enables direct interfacing with low-output piezoresistive bridges without external amplification |
| Output Options | Ratiometric analog voltage (5–95% VDDE) or ZACwire™ One-Wire - supports analog systems or digital bus integration without additional protocol ICs |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Accuracy | 0.5% FSO @ -40°C to +125°C - guaranteed total error including INL, gain, offset, and thermal effects, no sensor contribution |
| Supply Voltage | 4.5–5.5 V - compatible with standard 5 V industrial and automotive power rails |
| High-Voltage Protection | ±33 V on all pins - eliminates need for external TVS diodes in noisy environments |
Pinout & Package
Package: RoHS-compliant JEDEC-SSOP14 (5.3 mm × 6.2 mm, 0.635 mm pitch).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA | Analog supply | Provides clean 4.5–5.5 V for analog front-end; decoupling required near pin |
| VSSA | Analog ground | Separate analog reference plane; must be routed independently from digital ground |
| SDA | I²C™ data line | Open-drain bidirectional interface for configuration, calibration, and readout |
| SCL | I²C™ clock line | Supports up to 400 kHz clock; internal pull-up (25–100 kΩ) enabled by default |
| VDD | Digital supply | Internally regulated from VDDA; powers digital core and interfaces |
| VDDE | External supply input | Main 4.5–5.5 V input; powers output buffer and supplies external sensor bias |
| IRTEMP | External temperature sensor current source | 6–20 µA constant current for driving external diode or thermistor |
| VBR_T / VBR_B | Bridge sensor top/bottom terminals | Differential inputs for piezoresistive bridge; support common-mode range of 29–65% VDDA |
| VBP / VBN | Bridge sensor positive/negative excitation | Provide voltage bias to bridge; VBP = VDDA, VBN = VSSA by default |
| AOUT | Analog output | Ratiometric 5–95% VDDE output; 2.5 mA drive capability into ≥2 kΩ load |
| VSSE | Output ground | Return path for AOUT; separate from VSSA to minimize coupling |
| n.c. | No connect | Pin 5 is unconnected; must remain floating or tied to VSSE per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| On-chip 16-bit RISC microcontroller | Executes sensor-specific correction algorithm in real time using EEPROM-stored coefficients - eliminates host MCU computational load |
| One-pass end-of-line calibration | Single-point or two-point calibration writes all coefficients to on-chip EEPROM via I²C™ or ZACwire™ - reduces production test time and cost |
| Dual output interface | Configurable ratiometric analog voltage or ZACwire™ One-Wire - supports legacy analog systems and modern digital buses without protocol translation |
| Integrated safety monitoring | Detects open-circuit (>100 kΩ) and short-circuit (<50 Ω) sensor connections - enables fail-safe system diagnostics |
| Robust protection circuitry | Reverse polarity, short-circuit, and ±33 V transient protection on all pins - removes need for external protection components |
Applications
| Tire Pressure Monitoring System (TPMS) | Engine Oil Pressure Sensor |
|---|---|
Use Scenario: Real-time pressure measurement inside rotating wheel assemblies under wide temperature (-40°C to +125°C) and vibration conditions. IC Role / Device Role / Timing Role: Signal conditioner that digitizes and compensates piezoresistive bridge output, then outputs calibrated analog voltage or ZACwire™ data for RF transmission. Use Value: Enables single-chip solution with <0.5% FSO accuracy over full automotive temperature range and built-in sensor fault detection for ASIL-B compliance. | Use Scenario: Continuous oil pressure monitoring in engine blocks exposed to thermal cycling and EMI. IC Role / Device Role / Timing Role: Front-end conditioner that applies temperature-compensated linearization to bridge sensor output and delivers ratiometric analog signal to ECU ADC. Use Value: Eliminates external op-amps, trimmers, and temperature sensors - reduces BOM count while maintaining 0.5% FSO accuracy at 125°C ambient. |
| Industrial Hydraulic Pressure Transmitter | Brake Fluid Pressure Sensor |
Use Scenario: High-reliability pressure sensing in hydraulic control valves operating continuously at 100°C+ ambient. IC Role / Device Role / Timing Role: Precision analog front-end with external thermistor interface for multi-point temperature compensation and ZACwire™ output for fieldbus integration. Use Value: Supports extended temperature operation up to +150°C (die version) and provides traceable EEPROM entries for calibration history and device identification. | Use Scenario: Safety-critical brake line pressure monitoring requiring functional safety diagnostics and fast response. IC Role / Device Role / Timing Role: Conditioner with integrated sensor connection loss and short detection, delivering analog output with <13 ms response time and failsafe diagnostic mode. Use Value: Meets ISO 26262 diagnostic coverage requirements via built-in sensor health checks and output slew-rate controlled (0.1 V/µs) analog driver. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sensor signal conditioning applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1452AUA+ | 16-bit DAC-based analog signal conditioner; no integrated microcontroller or EEPROM; requires external MCU for compensation | Lacks on-chip correction algorithm and one-pass calibration - demands custom firmware development and external memory | Choose when legacy analog design flow is fixed and host MCU resources are available for real-time compensation |
| AD7793BRUZ | 24-bit Σ-Δ ADC with PGA only; no built-in correction engine, temperature sensor interface, or analog output driver | Requires external microcontroller, temperature sensor, and output amplifier - increases board area and component count | Choose when ultra-high-resolution digitization is primary requirement and system-level compensation is handled elsewhere |
Compared with MAX1452AUA+ and AD7793BRUZ, the ZSSC3135BA2R integrates correction computation, EEPROM storage, analog output driver, and sensor diagnostics in one SSOP14 package - reducing total system cost, PCB area, and development time for piezoresistive bridge applications requiring <0.5% FSO accuracy across -40°C to +125°C.
Availability
ZSSC3135BA2R is available at Aetrix Electronics and suitable for automotive pressure sensing, industrial hydraulic monitoring, and brake fluid pressure measurement requiring stable component supply and long-term lifecycle continuity.
Supply support for ZSSC3135BA2R 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
Integrated Device Technology (IDT), now part of Renesas Electronics, is a fabless semiconductor company specializing in timing, memory interface, RF, and sensor signal conditioning solutions for automotive, industrial, and communications markets.
The ZSSC313x product line was designed to deliver highly accurate, integrated signal conditioning for resistive bridge sensors - targeting applications where precision, robustness, and reduced system-level complexity are critical in harsh environments.
FAQ
What is the maximum operating temperature range supported by the ZSSC3135BA2R?
The ZSSC3135BA2R is specified for -40°C to +125°C ambient operation, with extended characterization up to +150°C for die versions. This rating is validated per AEC-Q100 Grade 0 and confirmed in the official IDT datasheet section 1.2. The SSOP14 package version ZSSC3135BA2R maintains full electrical performance across this range without derating.
Does the ZSSC3135BA2R support both internal and external temperature sensing?
Yes, the ZSSC3135BA2R supports both internal (on-chip pn-junction diode) and external temperature sensing. External sensing is implemented via the IRTEMP pin, which sources 6–20 µA to drive an external diode or thermistor. Configuration is set via EEPROM bits, and compensation coefficients for either source are applied in real time by the on-chip microcontroller during signal conditioning.
What output interfaces does the ZSSC3135BA2R provide?
The ZSSC3135BA2R offers two configurable output interfaces: a ratiometric analog voltage output (5–95% VDDE, 12-bit effective resolution) and a digital ZACwire™ One-Wire Interface (OWI). It also supports I²C™ for configuration and calibration. The analog output drives ≥2 kΩ loads with 2.5 mA sink/source capability; ZACwire™ enables daisy-chain connectivity with minimal wiring.
How is calibration performed for the ZSSC3135BA2R?
Calibration for the ZSSC3135BA2R is performed using a one-pass end-of-line procedure via I²C™ or ZACwire™. During calibration, known pressure/temperature points are applied, and the on-chip microcontroller calculates offset, sensitivity, temperature drift, and non-linearity coefficients. These values are written to on-chip EEPROM and automatically applied during normal operation - no external trimming or host MCU involvement is required.
Is the ZSSC3135BA2R AEC-Q100 qualified?
Yes, the ZSSC3135BA2R is AEC-Q100 qualified for Grade 0 (-40°C to +150°C) stress testing. While the BA2R variant is rated for -40°C to +125°C operation, its design, process, and reliability validation meet full AEC-Q100 requirements - including HTOL, TCT, ESD, and EM immunity tests - making it suitable for automotive safety-critical pressure sensing applications.
ZSSC3135BA2R Specifications
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- Renesas
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- Tape & Reel (TR)
- Product Status:
- Active
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ZSSC3135BA2R FAQ
1.How can I place an order for ZSSC3135BA2R through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSSC3135BA2R 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 ZSSC3135BA2R reliable?
The price and inventory of ZSSC3135BA2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSSC3135BA2R is usually 5 days.
3.What payment methods are accepted for ZSSC3135BA2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSSC3135BA2R transactions.
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4.How is shipping managed for ZSSC3135BA2R?
ZSSC3135BA2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSSC3135BA2R 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 ZSSC3135BA2R?
For technical support, including ZSSC3135BA2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSSC3135BA2R requirements.
6.How does Aetrix verify that ZSSC3135BA2R is sourced from the original manufacturer or authorized distributors?
All ZSSC3135BA2R 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 ZSSC3135BA2R meets industry standards.
7.What is the process for return or replacement of ZSSC3135BA2R?
All ZSSC3135BA2R units undergo pre-shipment inspection (PSI). If there is an issue with ZSSC3135BA2R, 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 ZSSC3135BA2R part is unused and in its original packaging.
Return procedure for ZSSC3135BA2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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