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Diodes Incorporated ZXCT215QBDW-7
- Part No.:
- ZXCT215QBDW-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Current Regulation/Management
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
ZXCT215QBDW-7.pdf
- Description:
- CM VOLTAGE OUTPUT SOT363 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
ZXCT215QBDW-7 from Diodes Incorporated is an automotive-grade, zero-drift, high-precision current-shunt monitor with 75 V/V fixed gain, ±60 µV max offset voltage, and ±0.8% max gain error over temperature. It operates from 2.7V to 26V supply, supports common-mode voltages from –0.3V to 26V, and delivers rail-to-rail output for accurate low-side or high-side current sensing in EV battery management systems.
For engineers reviewing the ZXCT215QBDW-7 datasheet, ZXCT215QBDW-7 pinout, ZXCT215QBDW-7 application, or ZXCT215QBDW-7 equivalent, this device is selected for AEC-Q100 Grade 1 automotive designs requiring stable 10mV full-scale shunt sensing, ultra-low drift (≤10 ppm/°C), and sub-100 µA quiescent current across –40°C to +125°C.
Technical Context
The ZXCT215QBDW-7 uses a zero-drift chopper-stabilized architecture with post-trim calibration to achieve ±60 µV max input offset and ≤0.5 µV/°C offset drift. Its differential input stage enables bidirectional or unidirectional current measurement via IN+ and IN– pins referenced to a programmable REF voltage.
It features 40 kHz bandwidth, 25 nV/√Hz input voltage noise, and 95 dB CMRR at full temperature range. The rail-to-rail output drives ADCs directly without level-shifting, while internal biasing allows operation with shunt drops as low as 10 mV - minimizing power loss in high-current paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 75 V/V - sets output voltage scaling for 10 mV shunt drop = 750 mV full-scale, enabling precise low-power current sensing |
| Offset Voltage (max) | ±60 µV - ensures <0.08% error at 10 mV sense voltage, critical for microamp-level accuracy |
| Gain Error (max) | ±0.8% - guaranteed over –40°C to +125°C, eliminating recalibration in under-hood environments |
| Supply Current (max) | 100 µA - enables always-on monitoring in battery-critical systems like BMS and e-pumps without significant drain |
| Common-Mode Range | –0.3 V to 26 V - supports direct sensing on 12 V/24 V/48 V rails, including high-side configurations above supply voltage |
| Bandwidth | 40 kHz - captures fast transient currents in motor control and ADAS actuators without phase lag |
| CMRR | 95 dB - rejects noise from high-dv/dt switching nodes in OBC and DC/DC converters |
Pinout & Package
Supplied in a 6-pin SOT363 package (2.2 mm × 2.1 mm × 0.95 mm), optimized for space-constrained automotive PCB layouts and thermally robust under-hood operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - REF | Analog input | Bias reference point for bidirectional sensing; sets output midpoint (e.g., V+/2) to enable ± current measurement |
| 2 - GND | Ground | Power and signal return path; must be low-impedance to minimize ground bounce in high-current systems |
| 3 - V+ | Power supply | Single 2.7–26 V rail; powers internal amplifier and bias circuitry - independent of sensed rail voltage |
| 4 - IN+ | Analog input | Connects to supply side of shunt; senses high-side or low-side common-mode voltage up to 26 V |
| 5 - IN– | Analog input | Connects to load side of shunt; differential pair with IN+ measures mV-level voltage drop across RSENSE |
| 6 - OUT | Analog output | Rail-to-rail voltage output proportional to load current; directly interfaces with 12-bit+ ADCs without external buffering |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in engine bay and battery enclosures |
| Zero-drift architecture | Eliminates thermal drift-induced baseline shift - maintains ±60 µV offset across full temperature range |
| 10 mV full-scale shunt support | Reduces I²R power loss by 75% vs. 40 mV shunts, critical for high-efficiency EV power stages |
| Rail-to-rail output | Delivers 0.005 V to (V+) – 0.05 V swing - maximizes ADC dynamic range without external level-shifting |
| Low gain drift | ≤10 ppm/°C - ensures consistent gain calibration over vehicle lifetime without firmware compensation |
Applications
| EV On-Board Charger (OBC) | Battery Management System (BMS) |
|---|---|
Use Scenario: Monitoring bidirectional AC/DC conversion current during charging and discharging cycles. IC Role / Device Role / Timing Role: High-side current sensor feeding isolated ADC, configured with REF = V+/2 for ±100 A range. Use Value: 75 V/V gain and 95 dB CMRR reject EMI from 100 kHz PFC stages while maintaining <0.5% total error at 10 mV shunt drop. | Use Scenario: Cell-level and pack-level current monitoring during fast charge/discharge with thermal stress. IC Role / Device Role / Timing Role: Low-side shunt monitor interfacing with MCU ADC, operating at 3.3 V supply with –0.3 V to 5 V common-mode range. Use Value: ±60 µV offset and 100 µA IQ enable microamp-resolution current tracking without compromising battery standby life. |
| Electric Power Steering (EPS) | ADAS Actuator Control |
Use Scenario: Real-time motor phase current sensing for torque vectoring and fault detection. IC Role / Device Role / Timing Role: High-bandwidth (40 kHz) current monitor on 12 V motor drive rail, placed adjacent to shunt for minimal trace inductance. Use Value: 40 kHz bandwidth captures PWM-edge transients; rail-to-rail output ensures full ADC utilization during peak assist events. | Use Scenario: Solenoid and valve coil current profiling in autonomous braking and suspension modules. IC Role / Device Role / Timing Role: Unidirectional high-side sensor with REF tied to GND, measuring 0–50 A pulses up to 10 kHz. Use Value: 75 V/V gain scales 10 mV shunt drop to 750 mV - matching typical SAR ADC reference voltages for optimal SNR. |
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 | 100 V/V gain, ±10 µV offset, 4 V/V to 500 V/V selectable via pins; higher IQ (2.4 mA) | Requires external gain configuration; better for multi-range designs but less space-efficient | Choose when programmable gain or lower offset is prioritized over ultra-low power |
| ZXCT214QBDW-7 | 100 V/V gain, ±60 µV offset, identical package/supply/temp specs | Higher gain suits 7.5 mV shunts; trades resolution for reduced shunt size in compact modules | Choose when system-level shunt resistance is constrained and 100 V/V scaling better matches ADC full-scale |
Compared with INA240A1QDRQ1, ZXCT215QBDW-7 offers 24× lower quiescent current and pin-strapped simplicity, while ZXCT214QBDW-7 provides tighter full-scale voltage alignment for 3.3 V ADCs - making the B-version variants optimal for cost-sensitive, always-on automotive subsystems.
Availability
ZXCT215QBDW-7 is available at Aetrix Electronics and suitable for EV on-board chargers, battery management systems, and electric power steering modules requiring stable component supply across extended automotive lifecycles.
Supply support for ZXCT215QBDW-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 manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and computing markets.
The ZXCT21xQ series was developed specifically for AEC-Q100-compliant current sensing in high-voltage EV power systems, emphasizing zero-drift precision, wide common-mode tolerance, and ultra-low power consumption.
FAQ
What is the maximum common-mode voltage the ZXCT215QBDW-7 can measure?
The ZXCT215QBDW-7 supports a common-mode input range from –0.3 V to 26 V, enabling direct high-side sensing on 12 V, 24 V, and 48 V automotive rails - even when the sensed voltage exceeds the device's own supply voltage (2.7–26 V). This eliminates need for level-shifting or isolated amplifiers in OBC and BMS applications.
Can the ZXCT215QBDW-7 be used for bidirectional current sensing?
Yes - by applying a bias voltage (typically V+/2) to the REF pin, the output swings symmetrically around that reference, allowing measurement of both charge and discharge currents. This configuration is validated in battery management and regenerative braking systems, with rail-to-rail output ensuring full dynamic range utilization across ±100 A ranges.
How does the 75 V/V gain affect shunt resistor selection?
With 75 V/V gain and 10 mV full-scale shunt drop, the output reaches 750 mV - ideal for direct interface with 3.3 V ADCs using 3.3 V reference. For a 100 A full-scale current, RSENSE = 10 mV / 100 A = 100 µΩ, yielding only 0.1 W power dissipation - significantly lower than conventional 40 mV shunts, improving thermal margin in confined enclosures.
Is the ZXCT215QBDW-7 RoHS and AEC-Q100 compliant?
Yes - it is fully RoHS 3 (2015/863/EU) compliant, halogen- and antimony-free ("Green"), and qualified to AEC-Q100 Grade 1 (–40°C to +125°C ambient). Manufactured in IATF 16949-certified facilities, it supports PPAP documentation and change control required for Tier-1 automotive supply chains.
ZXCT215QBDW-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:
- ±0.8%
- 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
ZXCT215QBDW-7 FAQ
1.How can I place an order for ZXCT215QBDW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXCT215QBDW-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 ZXCT215QBDW-7 reliable?
The price and inventory of ZXCT215QBDW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCT215QBDW-7 is usually 5 days.
3.What payment methods are accepted for ZXCT215QBDW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCT215QBDW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXCT215QBDW-7?
ZXCT215QBDW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXCT215QBDW-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 ZXCT215QBDW-7?
For technical support, including ZXCT215QBDW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCT215QBDW-7 requirements.
6.How does Aetrix verify that ZXCT215QBDW-7 is sourced from the original manufacturer or authorized distributors?
All ZXCT215QBDW-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 ZXCT215QBDW-7 meets industry standards.
7.What is the process for return or replacement of ZXCT215QBDW-7?
All ZXCT215QBDW-7 units undergo pre-shipment inspection (PSI). If there is an issue with ZXCT215QBDW-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 ZXCT215QBDW-7 part is unused and in its original packaging.
Return procedure for ZXCT215QBDW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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