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Renesas ZSC31150GAG1-T
- Part No.:
- ZSC31150GAG1-T
- Manufacturer:
- Renesas
- Category:
- Specialized
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
ZSC31150GAG1-T.pdf
- Description:
- IC INTFACE SPECIALIZED SGNL COND
- Quantity:
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Product details
Overview
ZSC31150GAG1-T from Integrated Device Technology (IDT) is an AEC-Q100-qualified automotive sensor signal conditioner IC designed for high-accuracy digital compensation of bridge sensor signals. It integrates a 16-bit RISC microcontroller, EEPROM-stored calibration coefficients, and dual analog/digital output - delivering 0.5% FSO accuracy over −40°C to +125°C, 12.4-bit ratiometric analog voltage output, and ZACwire™/I²C interfaces for PC-controlled calibration.
For engineers reviewing the ZSC31150GAG1-T datasheet, ZSC31150GAG1-T pinout, ZSC31150GAG1-T application, or ZSC31150GAG1-T equivalent, this device supports end-of-line calibration, bridge sensor biasing (voltage or constant current), temperature compensation via internal diode/external thermistor, and failsafe diagnostics - critical for automotive pressure, load cell, and position sensing systems requiring robust EMC/ESD performance and traceable calibration.
Technical Context
The ZSC31150GAG1-T implements a closed-loop digital correction architecture: its analog front end conditions bridge sensor signals through a programmable gain amplifier (PGA) with up to 420× gain, followed by a 13–16-bit ADC; the on-chip RISC microcontroller executes sensor-specific algorithms using EEPROM-stored coefficients to correct offset, sensitivity, temperature drift, and non-linearity in real time.
Dual output paths are supported: a ratiometric analog voltage output (5–95% VDDE, 12-bit DAC resolution) and digital outputs via I²C (400 kHz) or ZACwire™ one-wire interface; temperature compensation sources include internal pn-junction, external diode (6–20 µA bias), or thermistor, with configurable measurement cycles and fail-safe monitoring including sensor open/short detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Accuracy (FSO) | 0.5% over −40°C to +125°C - guarantees calibrated output error bound for automotive-grade sensor systems without external trimming. |
| Analog Output | Ratiometric 5–95% VDDE, 12-bit resolution - enables stable readings across supply variations in vehicle electrical environments. |
| ADC Resolution | 13–16 bits, selectable - balances noise immunity and response time (256–512 µs for 100% step) for dynamic sensor applications. |
| Interface Options | I²C (400 kHz) and ZACwire™ - supports both standard microcontroller integration and minimal-pin-count field calibration. |
| Supply Voltage | 4.5–5.5 V - compatible with automotive 5 V rail systems and tolerant of battery transients. |
| Operating Temp | −40°C to +125°C - qualified per AEC-Q100 Grade 1, enabling under-hood deployment in engine management and braking systems. |
| Protection Features | Reverse polarity, short-circuit, and 33 V high-voltage protection - eliminates need for external TVS or reverse-battery protection circuitry. |
Pinout & Package
Package: 14-pin SSOP (Small Outline Package), 1.27 mm pitch, RoHS-compliant, wettable flanks not applicable (DFN variant only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDDA) | Analog Supply | Separate 4.5–5.5 V analog power input - decouples noise-sensitive analog block from digital supply. |
| 2 (VSSA) | Analog Ground | Dedicated analog reference return - required for precise differential bridge measurement and offset cancellation. |
| 3 (SDA) | I²C Data Line | Open-drain bidirectional interface for coefficient programming and sensor readout; supports 400 kHz operation. |
| 4 (SCL) | I²C Clock Line | Input-only clock for synchronous communication; internal pull-up resistor (25–100 kΩ) reduces external component count. |
| 5 (n.c.) | No Connect | Internally unused pin - must be left floating or tied to ground per layout guidelines to avoid coupling noise. |
| 6 (VDD) | Digital Supply | Shared 4.5–5.5 V supply for digital core and EEPROM; may be tied to VDDA if low-noise separation is not required. |
| 7 (VDDE) | Output Supply Reference | Provides ratiometric reference for AOUT; sets full-scale range (e.g., 5 V → 0.25–4.75 V output span). |
| 8 (IRTEMP) | Temperature Sensor Bias | Current source output (6–20 µA) for external diode temperature sensing - enables accurate thermal compensation without external bias resistors. |
| 9 (VBR_T) | Bridge Top Input | Differential positive input for Wheatstone bridge - accepts common-mode voltages from 0.29×VDDA to 0.65×VDDA. |
| 10 (VBP) | Bridge Positive Input | Primary differential bridge input; paired with VBN to measure mV/V-level sensor outputs with PGA gain up to 420×. |
| 11 (VBR_B) | Bridge Bottom Input | Differential negative reference input - completes bridge sensing path and enables common-mode rejection. |
| 12 (VBN) | Bridge Negative Input | Secondary differential bridge input; matched to VBP for symmetrical signal acquisition and minimized offset drift. |
| 13 (AOUT) | Analog Output | Voltage output (5–95% VDDE) with 2.5 mA drive capability - directly interfaces with ADCs or analog gauges without buffering. |
| 14 (VSSE) | Output Ground | Separate analog output return - isolates AOUT return path from VSSA to prevent ground bounce in high-current loads. |
Key Features
| Feature | Design Value |
|---|---|
| Digital compensation engine | On-chip 16-bit RISC MCU executes real-time correction of offset, sensitivity, tempco, and non-linearity using EEPROM-stored coefficients - eliminates laser trimming and external analog compensation networks. |
| Configurable temperature sensing | Supports internal diode, external diode (6–20 µA bias), or thermistor inputs - enables flexible thermal compensation architecture across diverse sensor packages and mounting conditions. |
| PC-controlled calibration | I²C and ZACwire™ interfaces allow single-pass, end-of-line calibration via host PC - reduces production test time and avoids manual potentiometer adjustments. |
| Failsafe diagnostics | Integrated sensor open/short detection (100 kΩ / 50 Ω thresholds), watchdog timer, and EEPROM CRC validation - meets ASIL-B functional safety requirements for automotive subsystems. |
| High-voltage robustness | Withstands ±33 V on supply and I/O pins - sustains load-dump and jump-start events in 12 V automotive systems without external protection devices. |
Applications
| Automotive Tire Pressure Monitoring (TPMS) | Engine Oil Pressure Sensing |
|---|---|
|
Use Scenario: Real-time monitoring of tire inflation pressure in passenger vehicles using piezoresistive bridge sensors mounted inside wheel assemblies. IC Role / Device Role / Timing Role: Signal conditioner performing offset/temperature compensation and ratiometric analog output generation synchronized to vehicle CAN bus polling intervals. Use Value: Enables <0.5% FSO accuracy at 125°C ambient, eliminating recalibration during seasonal temperature swings and supporting ISO 21848 compliance. |
Use Scenario: Closed-loop oil pressure feedback in engine control units for variable displacement oil pumps and turbocharger lubrication monitoring. IC Role / Device Role / Timing Role: High-speed bridge signal conditioner with 7.8 kHz sample rate and diagnostic-ready digital interface for ECU-triggered burst-mode sampling. Use Value: Delivers 256 µs response time for rapid pressure transients and built-in sensor connection check prevents false fault codes during cold starts. |
| Brake System Master Cylinder Pressure | Electric Power Steering (EPS) Torque Sensing |
|
Use Scenario: Redundant pressure sensing in hydraulic brake boosters for ADAS features like automatic emergency braking and stability control. IC Role / Device Role / Timing Role: AEC-Q100 Grade 1 signal conditioner providing dual-path output (analog + ZACwire™) for cross-checked safety-critical measurements. Use Value: Achieves 1.0% FSO worst-case accuracy at 150°C (extended grade), with traceable EEPROM entries meeting ISO 26262 tool qualification requirements. |
Use Scenario: Strain-gauge-based torque measurement in EPS column-assist modules where space-constrained packaging demands minimal external components. IC Role / Device Role / Timing Role: Compact SSOP14 signal conditioner performing on-chip bridge excitation (constant current mode), temperature compensation, and analog output with <10 mVpp noise. Use Value: Reduces BOM count by integrating biasing, amplification, correction, and protection - enabling sub-5 mm PCB footprint for steering column integration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge 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 digital correction. | Lacks on-chip calibration algorithm execution; suited for legacy designs with existing firmware infrastructure. | Choose MAX1452AUA+ when reusing established analog compensation IP and avoiding EEPROM lifecycle management overhead. |
| AD8422ARZ | Instrumentation amplifier only - no ADC, no digital correction, no temperature compensation logic or interfaces. | Requires full external signal chain (ADC, processor, memory, software) for complete sensor conditioning. | Choose AD8422ARZ only for highly customized, high-bandwidth (>10 kHz) analog front ends where digital correction is implemented externally. |
Compared with MAX1452AUA+ and AD8422ARZ, the ZSC31150GAG1-T delivers fully integrated digital correction, AEC-Q100 qualification, and dual-output flexibility - reducing system-level design effort, PCB area, and calibration cost while ensuring automotive-grade reliability and traceability.
Availability
ZSC31150GAG1-T is available at Aetrix Electronics and suitable for automotive pressure sensing, industrial load cell interfacing, and electric power steering torque measurement requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for ZSC31150GAG1-T 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 ZSC31150 product line was engineered specifically for high-accuracy, AEC-Q100-qualified bridge sensor signal conditioning in harsh automotive environments - emphasizing integrated calibration, diagnostic readiness, and minimal external component count.
FAQ
What is the maximum operating temperature range certified for the ZSC31150GAG1-T?
The ZSC31150GAG1-T is rated for −40°C to +125°C ambient operation and qualified to AEC-Q100 Grade 1 standards. This specification is confirmed in the official IDT datasheet Section 1.2.1 (TAMB_TQA), and applies specifically to the GAG1 package variant. The extended −40°C to +150°C range is reserved for GEG1/GEG2 variants and is not valid for ZSC31150GAG1-T.
Does the ZSC31150GAG1-T support both voltage-mode and current-mode bridge excitation?
Yes, the ZSC31150GAG1-T supports configurable bridge excitation: voltage mode (ratiometric supply referenced to VDDE) and constant-current mode (via internal current source). This is explicitly documented in Section 2.2 ("Sensor Channel") and Table 1.2.6 (IBR_MAX = 2 mA), enabling compatibility with diverse strain gauge and pressure sensor topologies without external bias circuitry.
Can the ZSC31150GAG1-T perform temperature compensation using an internal sensor only?
Yes, the ZSC31150GAG1-T includes an internal temperature-sensing pn-junction (TS in Block Diagram, Section 2.4) and supports full digital compensation using only this internal source. Its sensitivity is specified as 700–2700 ppm FS/K (Section 1.3.3.6), and no external components are required when internal temperature measurement suffices for the target accuracy.
What is the resolution and accuracy of the analog output (AOUT) on the ZSC31150GAG1-T?
The ZSC31150GAG1-T's AOUT pin provides a ratiometric analog voltage output with 12-bit DAC resolution (Section 1.3.6.1), delivering 5–95% VDDE span. Its total unadjusted error is 0.5% FSO over −40°C to +125°C (Section 1.3.7.7), including INL, gain, offset, and temperature-induced deviations - verified under production test conditions per IDT's AEC-Q100 qualification.
Is the ZSC31150GAG1-T pin-compatible with other variants in the ZSC31150 family, such as ZSC31150GEG2-R?
No, the ZSC31150GAG1-T (14-SSOP) is not pin-compatible with ZSC31150GEG2-R (14-DFN), despite identical pin count and function mapping. The SSOP and DFN packages have different pad layouts, thermal pad configurations, and mechanical dimensions - confirmed in Section 5 of the datasheet. PCB redesign is required when migrating between these packages.
ZSC31150GAG1-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 14-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Applications:
- Sensor Signal Conditioner - Resistive
- Interface:
- I2C, ZACwire™
- Voltage - Supply:
- 4.5V ~ 5.5V
- Supplier Device Package:
- 14-SSOP
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
ZSC31150GAG1-T FAQ
1.How can I place an order for ZSC31150GAG1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSC31150GAG1-T 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 ZSC31150GAG1-T reliable?
The price and inventory of ZSC31150GAG1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSC31150GAG1-T is usually 5 days.
3.What payment methods are accepted for ZSC31150GAG1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSC31150GAG1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZSC31150GAG1-T?
ZSC31150GAG1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSC31150GAG1-T 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 ZSC31150GAG1-T?
For technical support, including ZSC31150GAG1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSC31150GAG1-T requirements.
6.How does Aetrix verify that ZSC31150GAG1-T is sourced from the original manufacturer or authorized distributors?
All ZSC31150GAG1-T 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 ZSC31150GAG1-T meets industry standards.
7.What is the process for return or replacement of ZSC31150GAG1-T?
All ZSC31150GAG1-T units undergo pre-shipment inspection (PSI). If there is an issue with ZSC31150GAG1-T, 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 ZSC31150GAG1-T part is unused and in its original packaging.
Return procedure for ZSC31150GAG1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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