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Renesas ZSSC3138BE2T
- Part No.:
- ZSSC3138BE2T
- Manufacturer:
- Renesas
- Category:
- Specialized
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
ZSSC3138BE2T.pdf
- Description:
- IC INTFACE SPECIALIZED SGNL COND
- Quantity:
- Payment:
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Inventory:2,082
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Product details
Overview
ZSSC3138BE2T 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 ZSSC3138BE2T datasheet, ZSSC3138BE2T pinout, ZSSC3138BE2T application, or ZSSC3138BE2T equivalent, key selection criteria include its −40°C to +150°C extended temperature operation, SSOP14 JEDEC package, dual offset compensation (analog XZC + digital), 7.8 kHz max bandwidth in 2-step ADC mode, and AEC-Q100 qualification for harsh environments.
Technical Context
The ZSSC3138BE2T implements a fully differential analog front-end with programmable gain amplifier (PGA), multiplexer, and full-differential switched-capacitor ADC. Its calibration microcontroller executes sensor-specific correction algorithms stored in ROM, using coefficients written to on-chip EEPROM during one-pass calibration.
It supports two ADC modes: 1-step (up to 16-bit resolution, 200 Hz bandwidth) and 2-step (13-bit resolution, 7.8 kHz bandwidth). The analog output is ratiometric (5–95% VDDE, 12.4-bit effective resolution), while digital readout uses I²C™ or ZACwire™ interfaces - both enabling PC-controlled configuration and end-of-line calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - enables direct compatibility with standard 5 V automotive/industrial rails without external regulators. |
| Operating Temperature | −40°C to +150°C - qualified for under-hood automotive and high-temp industrial sensor modules without derating. |
| Analog Gain Range | 2.8× to 420× - configurable PGA supports ceramic thick-film sensors with low mV/V output (as low as 1.8 mV/V at G=420). |
| ADC Resolution | 13–16 bit - selectable via configuration; 16-bit mode with range zooming achieves high dynamic range for precision measurement. |
| Accuracy (FOVERALL) | 0.25% FSO @ −25°C to +85°C - includes INL, gain, offset, and temperature errors; no sensor-induced contributions. |
| Output Interface | Ratiometric analog voltage (5–95% VDDE) or ZACwire™ One-Wire - eliminates need for separate ADC or interface IC in cost-sensitive designs. |
| Protection Features | 33 V absolute max rating, reverse polarity & short-circuit protection - enables robust operation in noisy, unregulated vehicle power systems. |
Pinout & Package
Package: RoHS-compliant JEDEC-standard SSOP14 (5.3 mm × 6.2 mm, 0.635 mm pitch), optimized for automated assembly and thermal reliability in sealed sensor housings.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDDA) | Analog supply input | Separate analog rail (4.5–5.5 V); decoupled with 100 nF capacitor to minimize noise coupling into AFE. |
| 2 (VSSA) | Analog ground reference | Dedicated analog return path; must be routed separately from digital ground to preserve 16-bit ADC integrity. |
| 3 (SDA) | I²C data line | Open-drain bidirectional interface; internal 25–100 kΩ pull-up enables direct connection to 3.3 V or 5 V I²C buses. |
| 4 (SCL) | I²C clock line | Input-only clock; supports up to 400 kHz operation when fOSC ≥ 2 MHz - sufficient for calibration and configuration. |
| 5 (n.c.) | No connect | Internally unused; must remain floating or grounded per layout guidelines to avoid parasitic coupling. |
| 6 (VDD) | Digital core supply | Internally regulated from VDDE; not externally accessible on ZSSC3138BE2T - simplifies power design. |
| 7 (VDDE) | Primary supply input | Main 4.5–5.5 V rail powering all domains; withstands transients up to ±33 V - eliminates need for external TVS. |
| 8 (VSSE) | Power ground | Common ground for VDDE, AOUT, and protection circuitry; ties to system chassis ground in automotive implementations. |
| 9 (VBR_T) | Bridge top terminal input | Differential input for positive side of Wheatstone bridge; accepts common-mode voltages from 29% to 65% of VDDA. |
| 10 (VBP) | Bridge positive bias | Provides excitation voltage to bridge; internally regulated - removes need for external bias resistor network. |
| 11 (VBR_B) | Bridge bottom terminal input | Differential input for negative side of Wheatstone bridge; matched impedance and offset tracking with VBR_T. |
| 12 (VBN) | Bridge negative bias | Completes bridge excitation path; enables true 4-wire bridge sensing with minimal offset drift. |
| 13 (AOUT) | Analog output | Ratiometric voltage output (5–95% VDDE); 12-bit DAC + buffer drives ≥2 kΩ loads with <10 mVpp noise (≤10 kHz BW). |
| 14 (OUT / OWI) | ZACwire™ data / digital output | Multi-function pin: serves as ZACwire™ One-Wire interface or digital output; open-drain, 33 V tolerant, supports daisy-chaining. |
Key Features
| Feature | Design Value |
|---|---|
| Two-stage offset compensation | Combines digital algorithmic correction with analog extended zero compensation (XZC) - handles sensor offsets up to 388% of span without saturation. |
| One-pass calibration | Stores all sensor-specific coefficients (offset, sensitivity, tempco, nonlinearity) in on-chip EEPROM during single end-of-line step - eliminates laser trimming and reduces test time. |
| High-voltage robustness | Withstands ±33 V on VDDE and AOUT pins - enables direct connection to 24 V truck/bus systems and eliminates external protection components. |
| AEC-Q100 Grade 0 qualification | Validated for operation from −40°C to +150°C with full functionality - meets automotive engine compartment and industrial furnace monitoring requirements. |
| Dual output flexibility | Configurable ratiometric analog voltage or ZACwire™ digital output - supports legacy analog systems and modern daisy-chain digital sensor networks without redesign. |
Applications
| Automotive Engine Oil Pressure Sensing | Industrial Ceramic Load Cell Interface |
|---|---|
Use Scenario: Monitoring oil pressure in diesel engines under extreme thermal cycling (−40°C cold start to +150°C operating). IC Role / Device Role / Timing Role: Signal conditioner performing real-time offset/temperature/nonlinearity correction on thick-film ceramic bridge sensor; outputs ratiometric voltage to ECU ADC. Use Value: Eliminates laser trimming and external compensation components; maintains 0.25% FSO accuracy across full AEC-Q100 Grade 0 range without recalibration. |
Use Scenario: High-stability weight measurement in factory automation load cells using alumina-based thick-film bridges. IC Role / Device Role / Timing Role: Front-end conditioner digitizing mV/V-level bridge output; applying 16-bit digital correction before analog output or ZACwire™ transmission. Use Value: Enables >100,000 EEPROM write cycles for field recalibration; 7.8 kHz bandwidth supports dynamic weighing up to 100 Hz sampling. |
| Off-Highway Vehicle Hydraulic Pressure Monitoring | Medical Disposable Pressure Transducer Module |
Use Scenario: Harsh-environment hydraulic pressure feedback in excavators and harvesters exposed to vibration, moisture, and wide voltage transients. IC Role / Device Role / Timing Role: Robust signal conditioner with reverse-polarity and short-circuit protection; interfaces ceramic bridge to CAN bus via external MCU. Use Value: ±33 V absolute ratings and integrated protection reduce BOM count by 3–4 discrete components; SSOP14 package supports conformal coating. |
Use Scenario: Single-use blood pressure transducers requiring traceable calibration and long-term stability over shelf life. IC Role / Device Role / Timing Role: Calibration anchor IC storing user-defined EEPROM entries (lot ID, calibration date, operator ID) alongside sensor coefficients. Use Value: Full traceability per ISO 13485; 15-year data retention at 55°C ensures calibration validity through product lifetime. |
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+ (Maxim Integrated) | Fixed 12-bit DAC resolution; no ZACwire™ interface; requires external EEPROM for calibration storage. | Limited to ≤125°C operation; lacks AEC-Q100 qualification; lower max gain (128×) restricts use with ultra-low-output ceramic sensors. | Select when legacy I²C-only infrastructure exists and extended temperature range is not required. |
| AD8555ARZ (Analog Devices) | Analog-only signal chain (no embedded microcontroller); relies on external MCU for digital correction algorithms. | Requires full custom firmware development for temperature compensation and nonlinearity correction - increases validation effort and time-to-market. | Select only for highly customized compensation schemes where algorithm flexibility outweighs integration benefits. |
Compared with MAX1452ACM+ and AD8555ARZ, the ZSSC3138BE2T integrates correction computation, EEPROM storage, dual offset compensation, and automotive-grade protection in a single SSOP14 package - reducing total solution size by ≥40% and eliminating external calibration hardware.
Availability
ZSSC3138BE2T is available at Aetrix Electronics and suitable for automotive engine monitoring, industrial load cell interfacing, off-highway hydraulic control, and medical disposable transducer applications requiring stable component supply across extended temperature and long lifecycle demands.
Supply support for ZSSC3138BE2T 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 ICs for communications, computing, and industrial markets.
The ZSSC313x family was engineered specifically for high-accuracy resistive bridge sensor conditioning in automotive and industrial environments - emphasizing AEC-Q100 compliance, integrated protection, and simplified calibration workflows.
FAQ
What is the maximum operating temperature supported by the ZSSC3138BE2T?
The ZSSC3138BE2T is rated for continuous operation from −40°C to +150°C and is AEC-Q100 Grade 0 qualified. This extended temperature range is confirmed in the datasheet's Table 1.2 (TAMB_TQE) and applies specifically to the BE2 package variant. The device maintains full functionality-including 0.5% FSO accuracy up to +125°C and 1.0% FSO up to +150°C-without derating or external thermal management.
Does the ZSSC3138BE2T require external trimming components for ceramic sensor calibration?
No, the ZSSC3138BE2T eliminates the need for external trimming components. Its on-chip 16-bit RISC microcontroller executes sensor-specific correction algorithms using coefficients stored in internal EEPROM after a one-pass calibration procedure. This capability, combined with analog XZC and digital offset/sensitivity/temperature/nonlinearity compensation, enables full calibration without laser trimming or discrete resistor networks.
Can the ZSSC3138BE2T interface directly with a 3.3 V microcontroller via I²C™?
Yes, the ZSSC3138BE2T supports I²C™ communication with 3.3 V microcontrollers. Its SDA and SCL pins accept logic-high levels down to 0.8×VDDA and feature internal pull-up resistors (25–100 kΩ), allowing direct connection to 3.3 V I²C buses when VDDA = 3.3 V. The datasheet confirms VI²C,HIGH and VI²C,LOW thresholds are referenced to VDDA, ensuring interoperability without level shifters.
What is the purpose of the ZACwire™ interface on the ZSSC3138BE2T?
The ZACwire™ interface on the ZSSC3138BE2T is a proprietary One-Wire digital interface that enables daisy-chained sensor networks using a single bidirectional wire. It supports configuration, calibration coefficient read/write, and conditioned sensor data retrieval - all without requiring additional address lines or dedicated clock signals. This reduces wiring complexity in multi-sensor modules such as brake pressure arrays or HVAC duct sensor clusters.
How does the ZSSC3138BE2T handle sensor open-circuit or short-circuit faults?
The ZSSC3138BE2T includes built-in sensor health monitoring: it detects open-circuit conditions when resistance exceeds 100 kΩ (RSCC_min) and short circuits when resistance falls below 50 Ω (RSSC_short). These diagnostics are performed automatically during each measurement cycle and can trigger diagnostic output modes on AOUT or flag errors via ZACwire™/I²C™ - enabling fail-safe system responses in safety-critical applications like airbag pressure sensing.
ZSSC3138BE2T 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™ One-Wire Interface
- Voltage - Supply:
- 4.5V ~ 5.5V
- Supplier Device Package:
- 14-SSOP
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
ZSSC3138BE2T FAQ
1.How can I place an order for ZSSC3138BE2T through Aetrix?
Please submit a Request for Quotation (RFQ) for ZSSC3138BE2T 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 ZSSC3138BE2T reliable?
The price and inventory of ZSSC3138BE2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZSSC3138BE2T is usually 5 days.
3.What payment methods are accepted for ZSSC3138BE2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZSSC3138BE2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZSSC3138BE2T?
ZSSC3138BE2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZSSC3138BE2T 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 ZSSC3138BE2T?
For technical support, including ZSSC3138BE2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZSSC3138BE2T requirements.
6.How does Aetrix verify that ZSSC3138BE2T is sourced from the original manufacturer or authorized distributors?
All ZSSC3138BE2T 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 ZSSC3138BE2T meets industry standards.
7.What is the process for return or replacement of ZSSC3138BE2T?
All ZSSC3138BE2T units undergo pre-shipment inspection (PSI). If there is an issue with ZSSC3138BE2T, 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 ZSSC3138BE2T part is unused and in its original packaging.
Return procedure for ZSSC3138BE2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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