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Diodes Incorporated ZXCT215BDW-7
- Part No.:
- ZXCT215BDW-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Current Regulation/Management
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
ZXCT215BDW-7.pdf
- Description:
- CM VOLTAGE OUTPUT SOT363 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
ZXCT215BDW-7 from Diodes Incorporated is a zero-drift, high-precision current-sense amplifier with 75V/V fixed gain, ±60μV max offset voltage, and rail-to-rail output, designed for accurate bidirectional or unidirectional current monitoring across shunt resistors at common-mode voltages from –0.3V to 26V in industrial power supplies and battery management systems.
For engineers reviewing the ZXCT215BDW-7 datasheet, ZXCT215BDW-7 pinout, ZXCT215BDW-7 application, or ZXCT215BDW-7 equivalent, this device supports low 10mV full-scale shunt drops, operates from 2.7V to 26V supply, delivers <0.8% gain error over temperature, and enables high-accuracy ADC interfacing in high-side/low-side configurations.
Technical Context
The ZXCT215BDW-7 implements a zero-drift chopper-stabilized architecture with post-trim calibration to achieve ±60μV max input offset and 10ppm/°C max gain drift across –40°C to +125°C. Its differential input stage rejects common-mode voltages up to 26V while operating from a supply as low as 2.7V.
It features rail-to-rail output swing (within 50mV of rails), 40kHz bandwidth, 25nV/√Hz input voltage noise, and 100μA max quiescent current - enabling precision current sensing in space-constrained, thermally demanding applications without external amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 75V/V fixed - scales 10mV shunt drop to 750mV output for optimal ADC resolution |
| Offset Voltage | ±60μV max - enables sub-1% error at 10mV sense voltage across full temperature range |
| Common-Mode Range | –0.3V to 26V - supports high-side sensing on 24V rails while powered from 3.3V |
| Supply Voltage | 2.7V to 26V - allows single-supply operation in battery-powered and industrial systems |
| Quiescent Current | 100μA max - minimizes self-heating and extends battery life in portable BMS |
| Gain Error | ±0.8% max over temperature - ensures stable calibration without periodic recalibration |
| CMRR | 95dB min - suppresses noise from noisy 24V bus in telecom and server power supplies |
Pinout & Package
Supplied in SOT363 (6-pin) package with exposed pad for thermal performance; footprint compatible with automated assembly and reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REF) | Analog reference input | Bias point for bidirectional sensing; must be driven by low-impedance source ≤ V+ |
| 2 (GND) | Ground reference | Return path for supply and signal; requires low-inductance connection to system ground plane |
| 3 (V+) | Positive supply input | Accepts 2.7V–26V; bypass capacitor mandatory for stability and PSRR optimization |
| 4 (IN+) | Non-inverting input | Connects to high-potential side of shunt; matched layout critical for CMRR |
| 5 (IN–) | Inverting input | Connects to low-potential side of shunt; trace symmetry preserves gain accuracy |
| 6 (OUT) | Analog output | Voltage proportional to load current × 75; drives ADC inputs directly with rail-to-rail swing |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | ±0.5μV/°C max dVOS/dT - eliminates thermal drift-induced measurement drift in wide-temperature environments |
| Rail-to-rail output | Swings within 50mV of V+ and GND - maximizes dynamic range for 3.3V or 5V ADCs |
| Low 10mV full-scale shunt support | Enables 0.1% power loss at 10A - reduces heat and improves efficiency in high-current paths |
| High CMRR (95dB) | Maintains accuracy despite 26V common-mode transients - critical for motor drive and PSU feedback loops |
| 100μA quiescent current | Reduces self-heating to <0.1°C rise in SOT363 - preserves offset stability in sealed enclosures |
Applications
| Industrial Power Supplies | Battery Management Systems |
|---|---|
Use Scenario: Real-time current monitoring in 24V DC-DC converters for factory automation PLCs. IC Role / Device Role / Timing Role: High-side current-sense amplifier converting shunt voltage to calibrated analog output for microcontroller ADC sampling. Use Value: Enables overcurrent protection with <100μs response and ±0.5% full-scale accuracy across –40°C to +85°C ambient. | Use Scenario: Bidirectional current sensing in lithium-ion pack monitoring during charge/discharge cycles. IC Role / Device Role / Timing Role: Precision current transducer referenced to mid-supply via REF pin to support ±5A measurement range. Use Value: Delivers ±0.8% gain error and ±60μV offset to ensure SOC estimation accuracy within ±1.5% over lifetime. |
| Telecom Rectifier Modules | High-Performance Video Cards |
Use Scenario: Input current supervision in 48V telecom rectifiers with hot-swap capability. IC Role / Device Role / Timing Role: Low-side shunt monitor interfaced to isolated digital isolator and MCU for fault logging. Use Value: Supports –0.3V to 26V common-mode range to tolerate ground bounce and transient surges without saturation. | Use Scenario: GPU rail current monitoring for dynamic power capping and thermal throttling. IC Role / Device Role / Timing Role: High-bandwidth (40kHz) current sensor feeding real-time telemetry to GPU controller. Use Value: 25nV/√Hz noise floor and 40kHz GBW enable clean current waveform capture during rapid load transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1IDR | 100V/V gain, ±10μV offset, 2.7V–5.5V supply only | Limited to low-voltage systems; no 26V common-mode support | Select when supply is ≤5.5V and ultra-low offset is prioritized over wide common-mode range |
| MAX40056ATA+T | 50V/V gain, ±150μV offset, 2.7V–5.5V supply, integrated reference | Requires external level-shifting for >5.5V rails; higher offset limits 10mV shunt use | Choose for cost-sensitive, low-voltage designs where integrated REF simplifies layout |
Compared with INA240A1IDR and MAX40056ATA+T, ZXCT215BDW-7 uniquely supports 26V common-mode sensing on 2.7V supply while maintaining ±60μV offset - making it the only option for high-side monitoring in 24V industrial systems with minimal shunt loss.
Availability
ZXCT215BDW-7 is available at Aetrix Electronics and suitable for industrial power supplies, battery management systems, telecom rectifier modules, and high-performance video cards requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for ZXCT215BDW-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 industrial, computing, and communications markets.
The ZXCT21x series was developed specifically for high-accuracy, low-loss current sensing in high-common-mode, wide-temperature environments - targeting power integrity validation and safety-critical monitoring in mission-critical infrastructure.
FAQ
What is the maximum common-mode voltage the ZXCT215BDW-7 can handle?
The ZXCT215BDW-7 supports a common-mode input range of –0.3V to 26V, verified per Absolute Maximum Ratings and Recommended Operating Conditions. This allows direct high-side sensing on 24V rails even when powered from a lower 3.3V supply, without level-shifting circuitry or risk of input saturation.
Can the ZXCT215BDW-7 be used for bidirectional current sensing?
Yes - by applying a stable mid-supply voltage (e.g., V+/2) to the REF pin, the OUT pin swings symmetrically above and below that reference, enabling precise measurement of charge and discharge currents. The device's rail-to-rail output and low offset ensure full-scale linearity in both directions across –40°C to +125°C.
What is the recommended shunt resistor value for a 10A full-scale measurement?
For 10A full-scale with 10mV shunt drop, use RSHUNT = 10mV / 10A = 1mΩ. With 75V/V gain, this yields 750mV output - ideal for 3.3V ADCs. Layout must minimize parasitic resistance (<10Ω series) at IN+/IN– to preserve gain accuracy and CMRR, per datasheet Figure 21 guidance.
Does the ZXCT215BDW-7 require external compensation capacitors?
No external compensation is required for stability under standard conditions. However, if input filtering is added for EMI suppression (e.g., RS <10Ω + CF), the RC time constant must exceed LSHUNT/RSHUNT to avoid gain error. The internal design is optimized for direct connection to low-inductance shunts without added components.
ZXCT215BDW-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- ZXCT21x
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-363
ZXCT215BDW-7 FAQ
1.How can I place an order for ZXCT215BDW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXCT215BDW-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 ZXCT215BDW-7 reliable?
The price and inventory of ZXCT215BDW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCT215BDW-7 is usually 5 days.
3.What payment methods are accepted for ZXCT215BDW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCT215BDW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXCT215BDW-7?
ZXCT215BDW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXCT215BDW-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 ZXCT215BDW-7?
For technical support, including ZXCT215BDW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCT215BDW-7 requirements.
6.How does Aetrix verify that ZXCT215BDW-7 is sourced from the original manufacturer or authorized distributors?
All ZXCT215BDW-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 ZXCT215BDW-7 meets industry standards.
7.What is the process for return or replacement of ZXCT215BDW-7?
All ZXCT215BDW-7 units undergo pre-shipment inspection (PSI). If there is an issue with ZXCT215BDW-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 ZXCT215BDW-7 part is unused and in its original packaging.
Return procedure for ZXCT215BDW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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