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Diodes Incorporated ZXCT1083QE5TA
- Part No.:
- ZXCT1083QE5TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Current Regulation/Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ZXCT1083QE5TA.pdf
- Description:
- IC CURRENT MONITOR 2% SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,990
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Product details
Overview
ZXCT1083QE5TA from Diodes Incorporated is an automotive-grade, high-side unipolar current sense monitor in SOT25 package, designed for non-intrusive load current measurement in 24–28V industrial and automotive systems. It features 40V max common-mode input range, 0.6µA quiescent current, ±0.2mV input offset voltage (typ), and AEC-Q100 Grade 1 qualification - enabling precise battery management and overcurrent monitoring in engine control units.
For engineers reviewing the ZXCT1083QE5TA datasheet, ZXCT1083QE5TA pinout, ZXCT1083QE5TA application, or ZXCT1083QE5TA equivalent, this device delivers verified high-voltage sensing capability with fixed 25× gain output, low-temperature drift (±100 ppm/K), and robust CMRR (>80 dB) across -40°C to +125°C ambient operation.
Technical Context
The ZXCT1083QE5TA operates as a voltage-output current monitor with fixed transimpedance gain of 25 V/V, converting differential sense voltage (VSENSE = VS+ − VS−) into proportional analog output (VOUT = 25 × VSENSE). Its input stage supports common-mode voltages up to 40V while maintaining independence between supply (VCC) and sensed rail (VS+).
It employs a precision current mirror architecture with matched internal transistors, delivering <±2.5 mV input offset error over full temperature range and >80 dB PSRR/CMRR at DC, ensuring stable performance under automotive load-dump and battery-transient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7V to 40V - powers internal circuitry without requiring connection to high-side rail. |
| Common-Mode Input Range | 2.7V to 40V - enables direct sensing on 24V/28V automotive rails without level-shifting. |
| Gain | 25 V/V - provides 25 mV output per 1 mV sense voltage, simplifying ADC interface design. |
| Input Offset Voltage | ±0.2 mV (typ), ±2.5 mV (max, -40°C to +125°C) - limits current-sense error to ≤0.2% at 100 mV VSENSE. |
| Quiescent Current | 0.6 µA (typ), 2 µA (max) - minimizes parasitic loading on sense resistor and preserves system efficiency. |
| Bandwidth | 500 kHz (-3dB, G=25) - supports fast transient detection in overcurrent protection circuits. |
| Operating Temperature | -40°C to +125°C - meets automotive under-hood thermal requirements per AEC-Q100 Grade 1. |
Pinout & Package
SOT25 (5-pin small-outline transistor) package with gull-wing leads, RoHS-compliant, halogen-free, and lead-free construction per Diodes Inc. AP02002 specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 OUT | Voltage output terminal | Delivers amplified VSENSE × 25; drives directly into ADC or comparator with 125 kΩ output impedance. |
| 2 GND | Analog ground reference | Return path for internal biasing; must be connected to system ground, not load ground. |
| 3 S+ | Positive current-sense input | Connects directly to high-side of sense resistor (VSUPPLY side); supports up to 40V common-mode. |
| 4 S- | Negative current-sense input | Connects directly to low-side of sense resistor (VLOAD side); maintains wide common-mode tolerance. |
| 5 VCC | Analog supply input | Provides power to internal amplifier; independent of S+/S− rails, enabling flexible supply routing. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including PPAP submission and long-term reliability under thermal cycling. |
| Fixed 25× gain architecture | Eliminates external gain-setting resistors, reducing BOM count and layout sensitivity vs. ZXCT1082Q. |
| 0.6 µA quiescent current | Reduces sense-resistor self-heating error and extends battery life in always-on monitoring systems. |
| 80 dB minimum CMRR/PSRR | Rejects noise from switching regulators and battery transients, preserving accuracy in noisy vehicle environments. |
| ±0.2 mV input offset (typ) | Enables sub-1% current measurement error down to 10 mA with 100 mΩ shunt at 25°C. |
Applications
| Automotive Battery Management | Engine Control Unit (ECU) Load Monitoring |
|---|---|
Use Scenario: Real-time monitoring of 12V/24V battery charge/discharge current in start-stop systems. IC Role / Device Role / Timing Role: High-side current sensor providing isolated analog output proportional to battery current flow. Use Value: Enables accurate state-of-charge estimation and overcurrent cutoff before fuse activation, using only 0.6 µA supply draw. |
Use Scenario: Detecting abnormal solenoid or injector coil current draw during engine cranking. IC Role / Device Role / Timing Role: Fast-response current monitor interfaced to ECU's ADC for diagnostic fault logging. Use Value: 500 kHz bandwidth captures millisecond-scale current spikes, supporting ISO 16750-2 load-dump immunity verification. |
| Electric Power Steering (EPS) Motor Protection | Commercial Vehicle Lighting Control |
Use Scenario: Continuous motor phase current monitoring in 24V EPS systems to prevent thermal runaway. IC Role / Device Role / Timing Role: Precision high-side sense element feeding safety-critical ASIL-B current feedback loop. Use Value: ±2.5 mV max offset ensures <0.5% full-scale error across -40°C to +125°C, meeting functional safety margin requirements. |
Use Scenario: LED headlamp current regulation and open-circuit fault detection in Class 8 trucks. IC Role / Device Role / Timing Role: High-common-mode monitor placed between LED driver and chassis ground. Use Value: 40V common-mode range accommodates 28V nominal rail with ±25% tolerance, eliminating need for isolated amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4080TASA+ | Fixed 20× gain, 2.7–76V supply, 1.5 µA IQ, SO8 package | Higher supply voltage support but larger footprint and higher quiescent current | Select when >40V common-mode or SO8 assembly compatibility is required |
| INA240A1QDRQ1 | Fixed 20× gain, 2.7–80V supply, 2.4 µA IQ, SO8 package, integrated EMI filter | Superior EMI rejection and wider voltage range, but 4× higher IQ and no SOT25 option | Select for high-noise EV traction inverters where EMI robustness outweighs size/power trade-offs |
Compared with MAX4080TASA+ and INA240A1QDRQ1, the ZXCT1083QE5TA offers the lowest quiescent current (0.6 µA) and smallest footprint (SOT25), making it optimal for space-constrained, ultra-low-power automotive modules where 40V common-mode suffices.
Availability
ZXCT1083QE5TA is available at Aetrix Electronics and suitable for automotive battery management, engine control unit (ECU) diagnostics, and electric power steering (EPS) motor protection requiring stable component supply across extended temperature and lifecycle demands.
Supply support for ZXCT1083QE5TA 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.
The ZXCT108xQ series belongs to Diodes' Automotive Precision Analog portfolio, engineered specifically for AEC-Q100-compliant high-side current sensing in harsh-temperature vehicle subsystems.
FAQ
What is the maximum common-mode voltage the ZXCT1083QE5TA can withstand?
The ZXCT1083QE5TA supports a maximum common-mode input voltage of 40V, as specified in its Recommended Operating Conditions. This allows direct connection across sense resistors on 24V and 28V automotive rails without attenuation or level-shifting circuitry. Absolute maximum rating is 45V, but sustained operation above 40V may degrade accuracy or reliability.
Does the ZXCT1083QE5TA require external gain-setting resistors?
No. Unlike the ZXCT1082Q or ZXCT1083Q variants with programmable gain, the ZXCT1083QE5TA implements a fixed 25× voltage gain internally. This eliminates the need for external RG or RGT resistors, reducing component count, PCB area, and calibration complexity in production designs.
How does the ZXCT1083QE5TA handle reverse polarity or load dump events?
The device has no reverse-polarity protection, but its absolute maximum ratings include -0.3V on all pins. For load dump (ISO 7637-2 Pulse 5a), external clamping (e.g., TVS on S+/S−) is recommended. Its 80+ dB CMRR and PSRR suppress transient-induced errors, and junction temperature remains within safe limits due to low 0.6 µA ICC.
Can the ZXCT1083QE5TA be used with a 3.3V microcontroller ADC?
Yes. With 25× gain and 0–500 mV VSENSE range, the output spans 0–12.5V - exceeding 3.3V ADC range. To interface safely, use a resistive divider (e.g., 10kΩ/2.4kΩ) at OUT to scale output to 0–3.3V, ensuring divider impedance stays below 125 kΩ to avoid gain error from output loading.
ZXCT1083QE5TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Monitor
- Sensing Method:
- High-Side
- Accuracy:
- ±2%
- Voltage - Input:
- 2.7V ~ 40V
- Current - Output:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
ZXCT1083QE5TA FAQ
1.How can I place an order for ZXCT1083QE5TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXCT1083QE5TA 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 ZXCT1083QE5TA reliable?
The price and inventory of ZXCT1083QE5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCT1083QE5TA is usually 5 days.
3.What payment methods are accepted for ZXCT1083QE5TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCT1083QE5TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXCT1083QE5TA?
ZXCT1083QE5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXCT1083QE5TA 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 ZXCT1083QE5TA?
For technical support, including ZXCT1083QE5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCT1083QE5TA requirements.
6.How does Aetrix verify that ZXCT1083QE5TA is sourced from the original manufacturer or authorized distributors?
All ZXCT1083QE5TA 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 ZXCT1083QE5TA meets industry standards.
7.What is the process for return or replacement of ZXCT1083QE5TA?
All ZXCT1083QE5TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXCT1083QE5TA, 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 ZXCT1083QE5TA part is unused and in its original packaging.
Return procedure for ZXCT1083QE5TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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