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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Current Regulation/Management

Diodes Incorporated ZXCT215QADW-7

Name: ZXCT215QADW-7
Brand: Diodes Incorporated
SKU: ZXCT215QADW-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXCT215QADW-7

Manufacturer:: Diodes Incorporated

Category:: Current Regulation/Management

Package:: 6-TSSOP, SC-88, SOT-363

Datasheet:: ZXCT215QADW-7.pdf

Description:: CM VOLTAGE OUTPUT SOT363 T&R 3K

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Inventory:3,000

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Product details

Overview

ZXCT215QADW-7 from Diodes Incorporated is an automotive-grade, zero-drift, high-precision current-sense amplifier with 75V/V fixed gain, ±60μV max offset voltage (B version), and -0.3V to 26V common-mode input range. It operates from 2.7V to 26V supply, draws ≤100μA quiescent current, and delivers rail-to-rail output for accurate low-side or high-side shunt monitoring in EV powertrain subsystems.

For engineers reviewing the ZXCT215QADW-7 datasheet, ZXCT215QADW-7 pinout, ZXCT215QADW-7 application, or ZXCT215QADW-7 equivalent, this device supports AEC-Q100 Grade 1 qualification, 10mV full-scale shunt sensing, and precise bidirectional current measurement in battery management and motor control systems requiring stable offset and gain over -40°C to +125°C.

Technical Context

The ZXCT215QADW-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 temperature. Its differential input stage rejects common-mode voltages up to 26V while operating from supplies as low as 2.7V - enabling 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), 40kHz bandwidth (C_L = 10pF), and 120dB CMRR at DC, supporting unidirectional and bidirectional configurations via REF pin biasing. Input bias current remains below 35μA across its full common-mode range.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain	75V/V fixed - scales 10mV shunt drop to 750mV output for high-resolution ADC sampling
Input Offset Voltage	±60μV max (B version) - enables <0.1% error at 10mV sense voltage across full temperature range
Common-Mode Range	-0.3V to 26V - supports direct high-side sensing on 24V battery rails without external level shifters
Supply Voltage	2.7V to 26V - powers from low-voltage MCU rails while monitoring high-voltage power paths
Quiescent Current	100μA max - minimizes parasitic load in always-on vehicle subsystems like BMS precharge monitoring
CMRR	120dB - suppresses noise from noisy 12V/24V power domains during precision current measurement
Operating Temperature	-40°C to +125°C - meets under-hood and powertrain thermal requirements per AEC-Q100 Grade 1

Pinout & Package

Package: 6-pin SOT363 (2.2mm × 2.1mm × 1.0mm), RoHS-compliant, halogen- and antimony-free "Green" construction.

Pin/Terminal	Circuit Role	Design Meaning
1 (REF)	Analog input	Bias reference for bidirectional operation; sets output midpoint (e.g., V+/2); must be low-impedance
2 (GND)	Ground	Power and signal return path; decoupling capacitor required between V+ and GND
3 (V+)	Power supply	Single 2.7–26V supply input; powers internal zero-drift core and output stage
4 (IN+)	Analog input	Connects to shunt resistor's supply-side terminal (high-side) or load-side (low-side)
5 (IN−)	Analog input	Connects to shunt resistor's load-side terminal (high-side) or ground-side (low-side)
6 (OUT)	Analog output	Voltage proportional to load current (V_OUT = I_LOAD × R_SENSE × 75 + V_REF); drives ADC directly

Key Features

Feature	Design Value
AEC-Q100 Grade 1 qualification	Validated for automotive powertrain use with PPAP capability and IATF 16949 manufacturing
Zero-drift architecture	Reduces offset drift to 0.1–0.5μV/°C, enabling stable 10mV full-scale sensing over temperature
Rail-to-rail output	Swings within 50mV of V+ and 5mV of GND, maximizing dynamic range for 3.3V/5V ADCs
10mV full-scale shunt support	Minimizes power loss (<100mW at 10A) while maintaining <0.8% total gain error over temperature
120dB CMRR	Rejects switching noise from adjacent 12V/24V power domains during high-accuracy current capture

Applications

Vehicle Battery Management System (BMS)

EV On-Board Charger (OBC) Control

Use Scenario: Monitoring charge/discharge current in 400V/800V traction battery packs with thermal cycling from -40°C to +85°C ambient.

IC Role / Device Role / Timing Role: High-side current sensor feeding isolated ADC; REF pin biased to V+/2 for bidirectional output swing.

Use Value: ±60μV offset ensures <±0.6% full-scale error at 10mV shunt drop, critical for SOC estimation accuracy over lifetime.

Use Scenario: Sensing primary-side AC input current and secondary-side DC output current in dual-stage OBC converters.

IC Role / Device Role / Timing Role: Dual-unit implementation: one for AC line sensing (high common-mode), one for DC bus monitoring (rail-to-rail output).

Use Value: 26V common-mode range allows direct AC rectifier output sensing without attenuators; 40kHz bandwidth captures switching ripple.

Electric Power Steering (EPS) Motor Driver

ADAS Radar Module Power Supply

Use Scenario: Real-time phase current monitoring in 3-phase inverter driving 12V EPS motors with PWM frequencies up to 20kHz.

IC Role / Device Role / Timing Role: Low-side shunt monitor per phase; OUT drives MCU's 12-bit SAR ADC with 1μs acquisition window.

Use Value: 100μA quiescent current avoids thermal derating in sealed EPS housing; 10ppm/°C gain drift maintains torque control linearity.

Use Scenario: Detecting overcurrent faults in 12V radar supply rails during cold cranking (battery dip to 6V) and load dump (transient to 36V).

IC Role / Device Role / Timing Role: High-side monitor with fast response; OUT triggers hardware fault latch before MCU intervention.

Use Value: -0.3V to 26V common-mode range survives 36V transients via internal clamping; 120dB CMRR rejects RF coupling from 77GHz antenna.

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	100V/V gain, ±100μV offset (max), 4V to 80V supply, 105dB CMRR	Higher supply range suits 48V mild-hybrid systems; lower CMRR increases noise susceptibility in ADAS modules	Select when monitoring >40V rails; avoid where 120dB CMRR is required for RF-noisy environments
ZXCT214QADW-7	100V/V gain, ±75μV offset (max), identical package, pinout, and temp range	Higher gain better for sub-10mV shunt drops; requires higher-resolution ADC to maintain SNR at same full-scale	Choose for tighter shunt budgets (e.g., <7mV drop); retain same layout and qualification status

Compared with INA240A1QDRQ1, ZXCT215QADW-7 offers superior CMRR and lower offset for 12V/24V systems but lacks 48V+ support; versus ZXCT214QADW-7, it trades 25% lower gain for improved dynamic range headroom and reduced ADC quantization error at typical 10mV shunts.

Availability

ZXCT215QADW-7 is available at Aetrix Electronics and suitable for electric vehicle battery management, on-board charging control, and ADAS power monitoring requiring stable component supply across automotive production lifecycles.

Supply support for ZXCT215QADW-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 belongs to Diodes' automotive-qualified precision analog portfolio, designed specifically for high-accuracy current sensing in safety-critical vehicle electrification systems including BMS, OBC, and EPS.

FAQ

What is the maximum shunt voltage drop supported by ZXCT215QADW-7?

The device supports full-scale shunt drops as low as 10mV due to its ±60μV max offset and 75V/V gain. At 10mV input, output is 750mV - well within 3.3V ADC range. Higher drops (e.g., 20mV) are supported but reduce measurement resolution proportionally; design must ensure V_OUT stays within rail-to-rail limits (≤V+ − 0.05V).

Can ZXCT215QADW-7 be used for bidirectional current sensing?

Yes - by applying a bias voltage (typically V+/2) to the REF pin, the OUT pin swings symmetrically around that reference, enabling positive/negative current detection. The device's rail-to-rail output and 120dB CMRR ensure clean bipolar signals even in noisy automotive environments; external REF buffer is recommended for low-impedance drive.

How does the zero-drift architecture improve long-term stability?

Chopper stabilization and auto-zeroing eliminate 1/f noise and minimize thermal drift, achieving ±0.5μV/°C typical offset drift over -40°C to +125°C. Post-trim calibration guarantees ±60μV max offset across temperature - critical for maintaining <0.6% error in battery coulomb counting over 15-year vehicle life without recalibration.

Is external filtering required for EMC robustness in automotive applications?

Yes - input RC filters (R_S ≤ 10Ω, C_F matched to shunt L/R) are recommended to suppress high-frequency transients from motor inverters or DC/DC converters. The datasheet specifies RS ≤ 10Ω to avoid gain error; typical values are 5Ω + 100nF for 12V EPS systems, reducing EFT susceptibility while preserving 40kHz bandwidth.

ZXCT215QADW-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

ZXCT215QADW-7 FAQ

1.How can I place an order for ZXCT215QADW-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXCT215QADW-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 ZXCT215QADW-7 reliable?

The price and inventory of ZXCT215QADW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCT215QADW-7 is usually 5 days.

3.What payment methods are accepted for ZXCT215QADW-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCT215QADW-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXCT215QADW-7?

ZXCT215QADW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXCT215QADW-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 ZXCT215QADW-7?

For technical support, including ZXCT215QADW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCT215QADW-7 requirements.

6.How does Aetrix verify that ZXCT215QADW-7 is sourced from the original manufacturer or authorized distributors?

All ZXCT215QADW-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 ZXCT215QADW-7 meets industry standards.

7.What is the process for return or replacement of ZXCT215QADW-7?

All ZXCT215QADW-7 units undergo pre-shipment inspection (PSI). If there is an issue with ZXCT215QADW-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 ZXCT215QADW-7 part is unused and in its original packaging.

Return procedure for ZXCT215QADW-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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