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Renesas ZSSC3138BE1D
- Part No.:
- ZSSC3138BE1D
- Manufacturer:
- Renesas
- Category:
- Sensor and Detector Interfaces
- Package:
- -
- Datasheet:
-
ZSSC3138BE1D.pdf
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- DICE (WAFER SAWN) - WAFFLE PACK
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Product details
Overview
ZSSC3138BE1D from Integrated Device Technology (IDT) is a CMOS sensor signal conditioner IC designed for ceramic thick-film and strain gauge bridge sensors in automotive and industrial applications. It provides 16-bit RISC-based digital compensation of offset, sensitivity, temperature drift, and non-linearity; supports analog gain up to 420; delivers 0.25% FSO accuracy over −25°C to +85°C; and features ratiometric analog voltage output or ZACwire™ digital interface.
For engineers reviewing the ZSSC3138BE1D datasheet, ZSSC3138BE1D pinout, ZSSC3138BE1D application, or ZSSC3138BE1D equivalent, key selection criteria include its extended analog zero compensation (XZC), AEC-Q100 qualification, −40°C to +150°C operation, I²C/ZACwire™ programmability, and integrated temperature sensing with on-chip diode.
Technical Context
The ZSSC3138BE1D implements a differential analog front-end with a three-stage programmable gain amplifier (PGA), full-differential switched-capacitor ADC (13–16 bit), and calibration microcontroller (CMC) executing ROM-stored correction algorithms. Its signal path processes bridge sensor inputs and internal temperature measurements sequentially via a multiplexer before digital conditioning.
It supports two ADC modes: 1-step (up to 13-bit, 200 Hz bandwidth) and 2-step (up to 13-bit, 7.8 kHz bandwidth), with configurable resolution, response time, and XZC offset compensation. Output is delivered either as ratiometric analog voltage (12.4-bit effective, 5–95% VDDE) or via ZACwire™ one-wire interface - both fully programmable via I²C™ or ZACwire™ during end-of-line calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5–5.5 V DC - enables direct compatibility with standard 5 V automotive/industrial rails without LDO overhead. |
| Analog Gain Range | 2.8–420 - selectable PGA gain allows optimization for low-output ceramic sensors (e.g., 1–275 mV/V span) without external amplification. |
| ADC Resolution | 13–16 bit - higher resolution (15/16-bit with range zooming) enables sub-0.1% FSO error budget allocation for system-level accuracy. |
| Accuracy (FOVERALL_TQI) | 0.25% FSO @ −25°C to +85°C - guaranteed total error includes INL, gain, offset, and temperature drift; no sensor contribution assumed. |
| Operating Temperature | −40°C to +150°C - qualified for under-hood automotive and high-temp industrial environments per AEC-Q100 Grade 0. |
| Output Interface | Ratiometric analog voltage (5–95% VDDE) or ZACwire™ one-wire - eliminates need for separate ADC or I/O expander in cost-sensitive systems. |
| Protection Features | 33 V absolute max rating, reverse polarity protection, short-circuit current limiting (±25 mA), and sensor open/short detection - reduces external protection circuitry. |
Pinout & Package
Package: RoHS-compliant JEDEC SSOP-14 (5.3 mm × 6.2 mm, 0.635 mm pitch), rated for −40°C to +150°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA / VSSA | Analog supply / analog ground | Separate analog domain power pins minimize noise coupling into sensitive AFE; VDDA must be within 0.35 V of VDDE. |
| VBR_T / VBR_B | Sensor bridge top/bottom input | Differential inputs for resistive bridge; require symmetric layout and matched external filtering to avoid signal failure. |
| VBP / VBN | Sensor bias positive/negative | Provide excitation voltage/current to bridge; support voltage biasing only (no current source mode). |
| AOUT | Analog output | Ratiometric voltage output (0.05–0.95 VDDE); 2.5 mA drive capability supports ≥2 kΩ loads without buffering. |
| SDA / SCL | I²C™ serial interface | Standard 400 kHz I²C bus for configuration, calibration data loading, and real-time register access; internal 25–100 kΩ pull-ups. |
| OUT / OWI | ZACwire™ one-wire interface | Single-pin digital interface supporting bidirectional communication; start window 96–455 ms at fOSC = 3 MHz. |
| VSSE / VDDE | Digital supply / digital ground | Digital domain power; VDDE referenced to VSSE; supports 33 V absolute max rating with integrated HV protection. |
Key Features
| Feature | Design Value |
|---|---|
| One-pass end-of-line calibration | EEPROM stores all sensor-specific coefficients (offset, sensitivity, tempco, non-linearity) after single calibration step - eliminates laser trimming and reduces test time. |
| Extended Analog Zero Compensation (XZC) | Compensates sensor offsets up to ±300% of signal span (e.g., 31 XZC steps at gain 420) - prevents AFE saturation in high-offset ceramic sensors. |
| Integrated temperature sensing | On-chip pn-junction diode with 700–2700 ppm/°C sensitivity - enables accurate on-die thermal reference without external sensor or routing. |
| High-voltage robustness | 33 V absolute maximum rating on VDDE, AOUT, and analog inputs - withstands load dump and battery reversal in automotive 12 V systems. |
| Failsafe sensor diagnostics | Detects open-circuit (>100 kΩ), short-circuit (<50 Ω), and asymmetry faults on bridge inputs - supports ASIL-B functional safety requirements. |
Applications
| Automotive Pressure Sensing | Industrial Load Cell Conditioning |
|---|---|
|
Use Scenario: Engine oil pressure monitoring in powertrain control units with ceramic thick-film sensors. IC Role / Device Role / Timing Role: Signal conditioner performing real-time offset/temperature compensation and ratiometric analog output generation. Use Value: Enables <0.5% FSO accuracy over −40°C to +150°C without external trimming or temperature sensors - meets AEC-Q100 Grade 0 requirements. |
Use Scenario: High-precision weighing systems using metal foil strain gauges in factory automation. IC Role / Device Role / Timing Role: Digital correction engine applying 16-bit calibration algorithm to compensate non-linearity and thermal drift. Use Value: Achieves 0.25% FSO accuracy from −25°C to +85°C with no laser trimming - reduces BOM count and improves long-term stability. |
| Ceramic Throttle Position Sensing | Harsh-Environment Tire Pressure Monitoring |
|
Use Scenario: Throttle valve angle measurement using thick-film potentiometric sensors in engine management. IC Role / Device Role / Timing Role: Bridge excitation, analog amplification, and digital linearization with integrated temperature compensation. Use Value: XZC handles large mechanical zero offsets; 7.8 kHz sample rate supports fast transient response in closed-loop control. |
Use Scenario: Direct-mount TPMS modules requiring high ESD immunity and wide temperature operation. IC Role / Device Role / Timing Role: Sensor interface with reverse polarity, short-circuit, and open-load protection plus ZACwire™ digital output. Use Value: 33 V HV protection and −40°C to +150°C operation eliminate external protection components - simplifies PCB layout in confined wheel wells. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar sensor signal conditioning applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Melexis MLX90363 | Triaxis® Hall-based IC; 16-bit DAC output; no built-in bridge AFE or XZC - requires external Wheatstone bridge. | Optimized for rotary position sensing with magnetic targets; not suitable for resistive bridge sensors. | Select MLX90363 only for contactless angular position; ZSSC3138BE1D remains required for ceramic/strain gauge bridge interfaces. |
| TE Connectivity MS5837 | Integrated pressure sensor + ASIC; fixed 24-bit ΔΣ ADC; no programmable PGA or EEPROM calibration storage. | Pre-calibrated digital pressure module (I²C/SPI); lacks user-programmable correction algorithm or analog output. | Choose MS5837 for plug-and-play pressure sensing; ZSSC3138BE1D is necessary when custom bridge sensor integration and field calibration are required. |
Compared with MLX90363 and MS5837, the ZSSC3138BE1D uniquely combines programmable bridge AFE, on-chip 16-bit RISC correction engine, XZC offset handling, and dual analog/digital outputs - making it the only solution for high-accuracy, user-calibrated ceramic sensor systems demanding AEC-Q100 compliance and −40°C to +150°C operation.
Availability
ZSSC3138BE1D is available at Aetrix Electronics and suitable for automotive pressure sensing, industrial load cell interfacing, ceramic throttle position sensing, and harsh-environment tire pressure monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ZSSC3138BE1D 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 developed specifically to address high-accuracy, AEC-Q100-qualified conditioning of resistive bridge sensors - targeting ceramic, silicon, and foil-based elements in safety-critical automotive and rugged industrial applications.
FAQ
What is the operating temperature range supported by the ZSSC3138BE1D?
The ZSSC3138BE1D is specified for operation from −40°C to +150°C, meeting AEC-Q100 Grade 0 requirements. This extended range is validated for the BE1D variant and enables use in under-hood automotive locations and high-temperature industrial environments without derating. The device maintains 0.5% FSO accuracy across −40°C to +125°C and 1.0% FSO up to +150°C.
Does the ZSSC3138BE1D support both analog and digital output simultaneously?
No - the ZSSC3138BE1D supports either ratiometric analog voltage output (AOUT pin) or ZACwire™ digital output (OWI pin), but not both concurrently. Output mode is selected during EEPROM configuration via I²C™ or ZACwire™ programming. The analog output offers 12.4-bit effective resolution (5–95% VDDE); the ZACwire™ interface provides single-wire digital readout compatible with microcontroller GPIOs.
How does the Extended Analog Zero Compensation (XZC) function in the ZSSC3138BE1D?
XZC in the ZSSC3138BE1D adds programmable analog offset correction at the second PGA stage to prevent saturation from large sensor zero errors - up to ±300% of signal span depending on gain setting (e.g., ±388% at PGA gain 420). It operates independently of digital offset compensation and is configured via EEPROM bits; XZC reduces ADC clipping risk and preserves dynamic range for ceramic sensors with inherent mechanical asymmetry.
Is the ZSSC3138BE1D pin-compatible with other members of the ZSSC313x family?
Yes - all ZSSC313x variants (including ZSSC3138BE1D, ZSSC3138BA2, ZSSC3137) share identical SSOP-14 pinout and electrical interface definitions. Differences are limited to temperature grade (BE1D = −40°C to +150°C), calibration firmware, and EEPROM content. Hardware design reuse is fully supported; only calibration and configuration EEPROM programming differs between variants.
What protection features does the ZSSC3138BE1D include for automotive environments?
The ZSSC3138BE1D integrates reverse polarity protection, short-circuit current limiting (±25 mA on AOUT), 33 V absolute maximum ratings on VDDE/AOUT/analog pins, and sensor open/short diagnostics (detection thresholds: >100 kΩ open, <50 Ω short). These features meet ISO 7637-2 pulse test requirements and eliminate need for external TVS diodes or discrete protection circuits in 12 V automotive systems.
ZSSC3138BE1D 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:
- -
ZSSC3138BE1D FAQ
1.How can I place an order for ZSSC3138BE1D through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSSC3138BE1D 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 ZSSC3138BE1D reliable?
The price and inventory of ZSSC3138BE1D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSSC3138BE1D is usually 5 days.
3.What payment methods are accepted for ZSSC3138BE1D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSSC3138BE1D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZSSC3138BE1D?
ZSSC3138BE1D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSSC3138BE1D 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 ZSSC3138BE1D?
For technical support, including ZSSC3138BE1D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSSC3138BE1D requirements.
6.How does Aetrix verify that ZSSC3138BE1D is sourced from the original manufacturer or authorized distributors?
All ZSSC3138BE1D 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 ZSSC3138BE1D meets industry standards.
7.What is the process for return or replacement of ZSSC3138BE1D?
All ZSSC3138BE1D units undergo pre-shipment inspection (PSI). If there is an issue with ZSSC3138BE1D, 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 ZSSC3138BE1D part is unused and in its original packaging.
Return procedure for ZSSC3138BE1D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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