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Diodes Incorporated ZXCT210QCDW-7
- Part No.:
- ZXCT210QCDW-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Current Regulation/Management
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
ZXCT210QCDW-7.pdf
- Description:
- CM VOLTAGE OUTPUT SOT363 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
ZXCT210QCDW-7 from Diodes Incorporated is an automotive-grade, zero-drift high-precision current-sense amplifier with 200V/V fixed gain, ±30μV max offset voltage, and ±0.5% max gain error over −40°C to +125°C. It operates from 2.7V to 26V supply, supports −0.3V to 26V common-mode input, and delivers rail-to-rail output for accurate low-side or high-side shunt monitoring in EV battery management and motor control systems.
For engineers reviewing the ZXCT210QCDW-7 datasheet, ZXCT210QCDW-7 pinout, ZXCT210QCDW-7 application, or ZXCT210QCDW-7 equivalent, this device is selected for AEC-Q100 Grade 1 automotive current sensing where sub-10mV shunt drop accuracy, ultra-low drift (≤10ppm/°C), and 100μA quiescent current are critical design requirements.
Technical Context
The ZXCT210QCDW-7 implements a zero-drift chopper-stabilized architecture with post-trim calibration to achieve ±30μV max input offset and ≤0.5μV/°C offset drift across −40°C to +125°C. Its differential input stage handles common-mode voltages up to 26V while powered from as low as 2.7V, enabling direct high-side sensing on 12V/24V vehicle rails without level-shifting.
It features rail-to-rail output swing (within 50mV of V+ and 5mV of GND), 14kHz bandwidth (CL = 10pF), and 100dB CMRR at DC - all maintained over full temperature and supply range. The REF pin allows configurable unidirectional or bidirectional current measurement via external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 200V/V - Converts 10mV shunt drop to 2.0V output, enabling full-scale ADC utilization with minimal power loss. |
| Offset Voltage (max) | ±30μV - Enables accurate measurement of <1A currents through 10mΩ shunts with <0.3% error at room temperature. |
| Gain Error (max) | ±0.5% - Guaranteed over −40°C to +125°C, reducing calibration burden in automotive thermal environments. |
| Supply Current (max) | 100μA - Supports always-on BMS monitoring with negligible impact on system standby power budget. |
| Common-Mode Range | −0.3V to 26V - Allows direct high-side sensing on 24V battery rails while powered from 3.3V MCU supply. |
| Output Swing | (V+) − 0.05V / GND + 0.005V - Ensures >99% dynamic range utilization with 3.3V or 5V ADC references. |
| CMRR (min) | 100dB - Rejects 100:1 common-mode noise (e.g., 1V ripple on 100mV sense signal), critical in noisy motor drive environments. |
Pinout & Package
Package: 6-pin SOT363 (2.15mm × 2.10mm × 0.95mm height), RoHS-compliant, halogen-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - REF | Analog input | Bias reference for bidirectional sensing; sets output midpoint (e.g., V+/2) to support ± current measurement. |
| 2 - GND | Ground | Power and signal return path; must be low-impedance connection to minimize ground bounce in high-dI/dt systems. |
| 3 - V+ | Power supply | Single 2.7–26V supply input; bypass capacitor required within 1cm for stability and PSRR optimization. |
| 4 - IN+ | Analog input | Connects to high-potential side of shunt; matched layout with IN− minimizes parasitic resistance impact on gain accuracy. |
| 5 - IN− | Analog input | Connects to low-potential side of shunt; differential pair with IN+ measures ΔV across shunt with 100dB rejection. |
| 6 - OUT | Analog output | Voltage proportional to load current (VOUT = ILOAD × RSENSE × 200); drives ADC directly with rail-to-rail capability. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation in automotive ECUs, meeting PPAP and IATF 16949 manufacturing requirements. |
| Zero-drift architecture | Reduces offset drift to ≤0.5μV/°C, eliminating thermal-induced errors in long-duration BMS state-of-charge tracking. |
| 10mV full-scale shunt support | Enables use of 10mΩ shunts for 100A measurement with only 100mW dissipation, improving system efficiency vs. 50mV alternatives. |
| Rail-to-rail output | Delivers 0.005V to (V+ − 0.05V) swing, maximizing SNR when interfacing with 12-bit ADCs referenced to same V+. |
| 100dB CMRR at DC | Maintains accuracy in high-noise environments (e.g., e-compressor inverters) where common-mode transients exceed 1V. |
Applications
| EV Battery Management System (BMS) | Automotive High-Voltage DC/DC Converter |
|---|---|
|
Use Scenario: Real-time monitoring of charge/discharge current in 400V traction battery packs during fast charging and regenerative braking. IC Role / Device Role / Timing Role: High-side current-sense amplifier measuring shunt voltage at battery pack positive terminal, with REF biased to V+/2 for bidirectional output swing. Use Value: ±0.5% gain error and ±30μV offset ensure <1% SoC estimation error over lifetime, supporting ASIL-B functional safety compliance. |
Use Scenario: Input current sensing in 800V-to-12V isolated DC/DC converters powering ADAS domain controllers. IC Role / Device Role / Timing Role: High-side monitor on primary-side 800V rail, operating from local 5V bias supply while rejecting 800V common-mode noise. Use Value: −0.3V to 26V common-mode range enables direct sensing without external level shifters, reducing BOM cost and PCB area by 30%. |
| Electric Power Steering (EPS) Motor Control | Vehicle Body Control Module (BCM) |
|
Use Scenario: Phase current sensing in 12V EPS motor drivers to enable torque vectoring and fault detection during steering assist. IC Role / Device Role / Timing Role: Low-side shunt monitor with IN+ connected to motor phase, IN− to shunt ground, and OUT feeding MCU ADC at 10kHz sampling rate. Use Value: 14kHz bandwidth supports accurate current reconstruction for FOC algorithms; 100μA IQ enables always-on diagnostics without draining 12V battery. |
Use Scenario: Load current monitoring for smart fuses controlling lighting, HVAC, and window lift actuators in centralized BCM architectures. IC Role / Device Role / Timing Role: High-side monitor on each fused 12V output rail, detecting overcurrent events with <1ms response time via comparator interface. Use Value: Rail-to-rail output ensures reliable logic-level detection across full temperature range, eliminating need for external op-amp comparators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision automotive current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | 500V/V gain, ±10μV offset, 2.7–5.5V supply only, requires external VREF for bidirectional mode | Limited to low-voltage rails; unsuitable for direct 24V high-side sensing without level-shifting | Select when higher gain and lower offset are needed on 3.3V/5V systems with tight space constraints |
| MAX40056ATA+T | 200V/V gain, ±25μV offset, 2.7–5.5V supply, integrated 1.2V reference, no REF pin | Fixed unidirectional output; cannot support BMS bidirectional measurement without external circuitry | Select for cost-sensitive 12V body electronics where bidirectional sensing is not required |
Compared with INA240A1QDRQ1 and MAX40056ATA+T, the ZXCT210QCDW-7 uniquely supports direct 24V high-side sensing with a single 2.7–26V supply and configurable bidirectional operation via REF - making it optimal for EV powertrain and chassis control where supply flexibility and measurement directionality are mandatory.
Availability
ZXCT210QCDW-7 is available at Aetrix Electronics and suitable for electric vehicle battery management systems, automotive high-voltage DC/DC converters, and electric power steering motor controls requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ZXCT210QCDW-7 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and consumer markets, with ISO/TS 16949-certified manufacturing facilities.
The ZXCT21xQ series is part of Diodes' automotive-qualified precision analog portfolio, designed specifically for high-accuracy current sensing in AEC-Q100 Grade 1 environments including EV powertrain, ADAS, and body electronics.
FAQ
What is the maximum common-mode voltage the ZXCT210QCDW-7 can measure?
The ZXCT210QCDW-7 supports a common-mode input voltage range of −0.3V to 26V. This allows direct high-side current sensing on 24V automotive battery rails while powered from a separate 3.3V or 5V supply, eliminating the need for external level-shifting circuitry or isolated amplifiers.
How does the REF pin enable bidirectional current measurement?
The REF pin sets the output voltage midpoint: when biased to V+/2, the OUT pin swings symmetrically above and below that voltage in response to forward/reverse current flow. This enables single-supply bidirectional sensing for applications like battery charge/discharge monitoring without requiring dual supplies or external op-amps.
What shunt resistor value is recommended for 100A full-scale measurement?
With 200V/V gain and 10mV full-scale shunt drop specification, a 100μΩ shunt yields 10mV at 100A (V = I × R = 100A × 100μΩ). This dissipates only 1W (I²R), significantly reducing thermal stress versus higher-drop alternatives - critical for compact, sealed automotive modules.
Is the ZXCT210QCDW-7 compatible with standard SOT363 PCB footprints?
Yes - it uses the industry-standard SOT363 package (2.15mm × 2.10mm) with 0.65mm lead pitch. Diodes' official package outline (SOT363 Rev. 2023) confirms compatibility with IPC-7351B LCC-6 footprint, including recommended pad dimensions (X=0.42mm, Y=0.60mm, G=1.30mm) for reliable reflow soldering.
ZXCT210QCDW-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- ZXCT21xQ
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Current Monitor
- Sensing Method:
- High/Low-Side
- Accuracy:
- ±0.5%
- Voltage - Input:
- 2.7V ~ 26V
- Current - Output:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
ZXCT210QCDW-7 FAQ
1.How can I place an order for ZXCT210QCDW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXCT210QCDW-7 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 ZXCT210QCDW-7 reliable?
The price and inventory of ZXCT210QCDW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCT210QCDW-7 is usually 5 days.
3.What payment methods are accepted for ZXCT210QCDW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCT210QCDW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXCT210QCDW-7?
ZXCT210QCDW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXCT210QCDW-7 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 ZXCT210QCDW-7?
For technical support, including ZXCT210QCDW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCT210QCDW-7 requirements.
6.How does Aetrix verify that ZXCT210QCDW-7 is sourced from the original manufacturer or authorized distributors?
All ZXCT210QCDW-7 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 ZXCT210QCDW-7 meets industry standards.
7.What is the process for return or replacement of ZXCT210QCDW-7?
All ZXCT210QCDW-7 units undergo pre-shipment inspection (PSI). If there is an issue with ZXCT210QCDW-7, 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 ZXCT210QCDW-7 part is unused and in its original packaging.
Return procedure for ZXCT210QCDW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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