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Diodes Incorporated ZXCT213QCDW-7
- Part No.:
- ZXCT213QCDW-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Current Regulation/Management
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
ZXCT213QCDW-7.pdf
- Description:
- CM VOLTAGE OUTPUT SOT363 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
ZXCT213QCDW-7 from Diodes Incorporated is an automotive-grade, zero-drift, high-precision current-shunt monitor with 50V/V fixed gain, ±0.5% max gain error over temperature, ±90μV max input offset voltage, and rail-to-rail output swing. It operates from 2.7V to 26V supply, supports common-mode voltages from –0.3V to 26V, and enables accurate 10mV full-scale shunt sensing in EV battery management systems.
For engineers reviewing the ZXCT213QCDW-7 datasheet, ZXCT213QCDW-7 pinout, ZXCT213QCDW-7 application, or ZXCT213QCDW-7 equivalent, this device is selected for high-side/low-side bidirectional current monitoring where low power loss, AEC-Q100 Grade 1 qualification, and stable performance across –40°C to +125°C are required.
Technical Context
The ZXCT213QCDW-7 uses a zero-drift chopper-stabilized architecture with post-trim calibration to achieve ±90μV max VOS and 10ppm/°C max gain drift over full temperature range. Its differential input stage rejects common-mode voltages up to 26V while powered from as low as 2.7V, enabling direct sensing on high-voltage rails like 400V EV battery stacks via level-shifted shunts.
It features rail-to-rail output (VOH = V+ – 0.05V, VOL = GND + 5mV), 80kHz bandwidth (CL = 10pF), and 25nV/√Hz input voltage noise - optimized for ADC interfacing in real-time current feedback loops for motor control and BMS charge/discharge state estimation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 50V/V - scales 10mV shunt drop to 500mV output, enabling high-resolution ADC sampling without amplification stages |
| Gain Error (max) | ±0.5% over –40°C to +125°C - ensures <±5mA absolute error at 1A full-scale with 10mΩ shunt |
| Input Offset Voltage | ±90μV max - supports sub-10mA current resolution with 10mΩ shunt at room temperature |
| Supply Current | 100μA max - allows continuous monitoring in always-on vehicle subsystems without significant battery drain |
| Common-Mode Range | –0.3V to 26V - permits direct high-side sensing on 12V/24V automotive rails and isolated DC/DC outputs |
| Bandwidth | 80kHz - captures fast transient currents in e-pump and ADAS actuator control loops |
| Output Swing | Rail-to-rail (GND+5mV to V+–50mV) - maximizes dynamic range for 3.3V or 5V ADC reference voltages |
Pinout & Package
Package: 6-pin SOT363 (2.2mm × 2.1mm × 1.0mm, moisture sensitivity Level 1, matte tin-plated leads).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - REF | Analog input | Bias reference point for bidirectional operation; sets output mid-point (e.g., V+/2 for ±current sensing) |
| 2 - GND | Ground | Power and signal return; must be low-impedance connection to minimize ground bounce in high-dI/dt paths |
| 3 - V+ | Power supply | Single 2.7V–26V supply input; bypass capacitor required within 1mm of pin for stability |
| 4 - IN+ | Analog input | Connects to high-potential side of shunt; matched trace routing critical to preserve CMRR >95dB |
| 5 - IN– | Analog input | Connects to low-potential side of shunt; differential pair with IN+ measures ΔV across shunt resistor |
| 6 - OUT | Analog output | Voltage proportional to load current (VOUT = ILOAD × RSENSE × 50 + VREF); drives ADC input directly |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive ambient temperatures (–40°C to +125°C) and PPAP-capable production in IATF 16949 facilities |
| Zero-drift architecture | 0.1μV/°C typical VOS drift - eliminates thermal-induced baseline shift in long-duration BMS monitoring |
| 10mV full-scale shunt support | Reduces shunt power loss by 75% vs. 40mV designs (e.g., 100W loss → 25W at 100A with 10mΩ) |
| Rail-to-rail output | Delivers >98% of ADC's input range - improves effective resolution by ≥1.5 LSB for 12-bit converters |
| Low quiescent current | 65μA typical IQ - enables integration into always-on vehicle networks (e.g., LIN wake-up nodes) without compromising battery life |
Applications
| EV Battery Management System (BMS) | Automotive High-Voltage DC/DC Converter |
|---|---|
|
Use Scenario: Real-time bidirectional current measurement during battery charging and discharging cycles in 400V/800V traction battery packs. IC Role / Device Role / Timing Role: High-side current monitor interfaced to isolated sigma-delta ADC, providing 100ksps sampled current data for state-of-charge (SoC) and state-of-health (SoH) algorithms. Use Value: ±0.5% gain error and ±90μV offset enable <±0.3% full-scale accuracy over lifetime, meeting ISO 26262 ASIL-B functional safety requirements for energy accounting. |
Use Scenario: Input/output current sensing in 1kW automotive DC/DC converters that step down 400V battery voltage to 12V/48V auxiliary rails. IC Role / Device Role / Timing Role: Low-side current monitor on primary and secondary windings, feeding fast overcurrent protection logic with <1μs response latency. Use Value: 80kHz bandwidth and rail-to-rail output allow detection of 10A fault currents within 12.5μs, enabling cycle-by-cycle shutdown before transformer saturation. |
| Electric Power Steering (EPS) Motor Control | ADAS Camera Module Power Sequencing |
|
Use Scenario: Phase current monitoring in three-phase 48V EPS inverters to support field-oriented control (FOC) and torque ripple suppression. IC Role / Device Role / Timing Role: High-side shunt monitor per phase leg, synchronized to PWM carrier for precise current reconstruction at 20kHz switching frequency. Use Value: 25nV/√Hz voltage noise and 10ppm/°C gain drift maintain <0.2° electrical angle error in FOC under thermal transients, improving steering smoothness. |
Use Scenario: Inrush current limiting and sequencing verification during startup of multi-rail ADAS camera modules (1.8V, 3.3V, 5V, 12V). IC Role / Device Role / Timing Role: Low-side current monitor on each rail, triggering soft-start disable if pre-charge current exceeds 200mA threshold. Use Value: 100μA max supply current allows permanent installation on all rails without adding measurable load, and ±90μV offset ensures reliable 5mA detection margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision current-sensing amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | 100V/V gain, ±150μV VOS, 4V/V to 500V/V programmable gain via external resistors | Requires external gain-setting resistors and layout compensation; higher VOS reduces resolution at 10mV shunt drops | Select when variable gain or higher common-mode range (–4V to 80V) is needed, accepting larger offset and added BOM cost |
| TSC2010AIDT | 50V/V gain, ±100μV VOS, 125°C max operating temperature, no AEC-Q100 qualification | Lacks automotive qualification and PPAP documentation; not approved for safety-critical vehicle subsystems | Select only for non-automotive industrial applications where AEC-Q100 compliance is unnecessary |
Compared with INA240A1QDRQ1 and TSC2010AIDT, ZXCT213QCDW-7 delivers tighter gain error (±0.5% vs. ±1.0%), lower offset (±90μV vs. ±150μV), and full AEC-Q100 Grade 1 validation - making it the preferred choice for production automotive current sensing where accuracy, reliability, and certification are mandatory.
Availability
ZXCT213QCDW-7 is available at Aetrix Electronics and suitable for EV battery management systems, automotive high-voltage DC/DC converters, and electric power steering motor controls requiring stable component supply across extended product lifecycles.
Supply support for ZXCT213QCDW-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.
The ZXCT21xQ series belongs to Diodes' automotive-qualified precision analog portfolio, designed specifically for high-accuracy, low-loss current monitoring in safety-critical vehicle electrification systems including BMS, OBC, and ADAS power domains.
FAQ
What is the maximum common-mode voltage the ZXCT213QCDW-7 can measure?
The ZXCT213QCDW-7 supports a common-mode input voltage range of –0.3V to 26V. This allows direct high-side current sensing on 12V and 24V automotive rails without level-shifting circuitry. The device maintains specified accuracy across this range at temperatures from –40°C to +125°C, with CMRR ≥95dB.
Can the ZXCT213QCDW-7 be used for bidirectional current sensing?
Yes - bidirectional operation is enabled by applying a bias voltage (typically V+/2) to the REF pin. This centers the output voltage, allowing positive and negative current flow to produce corresponding above- and below-midpoint output swings. The rail-to-rail output supports full-scale bidirectional range with minimal headroom loss.
What shunt resistor value is recommended for a 100A full-scale measurement?
For 100A full-scale with 10mV shunt drop, use RSENSE = 100μΩ. With 50V/V gain, this yields VOUT = 100A × 100μΩ × 50 = 500mV - optimal for 3.3V ADCs with 1.65V reference. Power dissipation is 1W (100A² × 100μΩ), requiring appropriate thermal design per IPC-2152 guidelines.
Does the ZXCT213QCDW-7 require external compensation components?
No external compensation is required for stability with capacitive loads ≤1nF. A 100nF ceramic bypass capacitor between V+ and GND, placed within 1mm of the pins, is mandatory. Input filter resistors must be ≤10Ω to avoid degrading CMRR and gain accuracy; matching tolerance should be ≤0.1% for best performance.
ZXCT213QCDW-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
ZXCT213QCDW-7 FAQ
1.How can I place an order for ZXCT213QCDW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXCT213QCDW-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 ZXCT213QCDW-7 reliable?
The price and inventory of ZXCT213QCDW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCT213QCDW-7 is usually 5 days.
3.What payment methods are accepted for ZXCT213QCDW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCT213QCDW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXCT213QCDW-7?
ZXCT213QCDW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXCT213QCDW-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 ZXCT213QCDW-7?
For technical support, including ZXCT213QCDW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCT213QCDW-7 requirements.
6.How does Aetrix verify that ZXCT213QCDW-7 is sourced from the original manufacturer or authorized distributors?
All ZXCT213QCDW-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 ZXCT213QCDW-7 meets industry standards.
7.What is the process for return or replacement of ZXCT213QCDW-7?
All ZXCT213QCDW-7 units undergo pre-shipment inspection (PSI). If there is an issue with ZXCT213QCDW-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 ZXCT213QCDW-7 part is unused and in its original packaging.
Return procedure for ZXCT213QCDW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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