Diodes Incorporated ZXCT215ADW-7

Overview

ZXCT215ADW-7 from Diodes Incorporated is a zero-drift, high-precision current-shunt monitor IC with 75V/V fixed gain, ±60μV max input offset voltage (B version), and rail-to-rail output. It operates from 2.7V to 26V supply, supports common-mode voltages from –0.3V to 26V, and enables accurate low-side or high-side current sensing down to 10mV shunt drop in industrial power supplies and battery management systems.

For engineers reviewing the ZXCT215ADW-7 datasheet, ZXCT215ADW-7 pinout, ZXCT215ADW-7 application, or ZXCT215ADW-7 equivalent, key selection criteria include its 75V/V gain accuracy over –40°C to +125°C, 100μA max quiescent current, 10ppm/°C gain drift, and SOT363 package compatibility with space-constrained PCB layouts.

Technical Context

The ZXCT215ADW-7 implements a chopper-stabilized zero-drift amplifier architecture to suppress input offset drift, achieving ±60μV max V_OS and 0.5μV/°C typical dV_OS/dT across –40°C to +125°C. Its matched internal resistor network sets precise 75V/V gain without external components.

It features a wide –0.3V to 26V common-mode input range independent of supply voltage, enabling direct sensing on 24V rails while powered from 3.3V. The rail-to-rail output drives ADC inputs directly, with 40kHz bandwidth and 0.4V/μs slew rate for dynamic current monitoring.

Key Specifications

Pinout & Package

Package: SOT363 (6-pin, 2.1mm × 2.0mm × 0.95mm, 0.95mm pitch).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-precision current sensing applications.

Compared with INA240A1QDRQ1 and MAX40016AUT+, ZXCT215ADW-7 uniquely balances 75V/V gain, ±60μV offset, and 26V common-mode range in SOT363-making it optimal for industrial 24V systems needing precision without automotive qualification overhead or low-voltage constraints.

Availability

ZXCT215ADW-7 is available at Aetrix Electronics and suitable for industrial power supplies, battery management systems, high-performance video cards, and instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for ZXCT215ADW-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 consumer markets.

The ZXCT21x series was designed specifically for high-accuracy, low-power current sensing in harsh environments-targeting applications where shunt-based measurement must operate reliably across –40°C to +125°C with minimal calibration drift.

FAQ

What is the maximum common-mode voltage the ZXCT215ADW-7 can measure?

The ZXCT215ADW-7 supports a common-mode input voltage range of –0.3V to 26V, independent of its supply voltage. This allows direct high-side sensing on 24V rails even when powered from a 3.3V supply, eliminating need for level-shifting circuitry or isolated amplifiers in industrial 24V systems.

Does the ZXCT215ADW-7 require external gain-setting resistors?

No. The ZXCT215ADW-7 integrates precision laser-trimmed resistors to deliver a fixed 75V/V gain. No external components are needed for gain configuration, reducing PCB area, component count, and potential errors from resistor mismatch or temperature drift in the signal path.

Can the ZXCT215ADW-7 be used for bidirectional current sensing?

Yes. By applying a bias voltage (e.g., V+/2) to the REF pin, the output swings symmetrically around that reference, enabling measurement of current flow in both directions. This is essential for battery charge/discharge monitoring and motor H-bridge current feedback applications.

What is the thermal performance of the SOT363 package at full load?

The SOT363 package has a junction-to-ambient thermal resistance (R_θJA) of 228°C/W. At 100μA quiescent current and 26V supply, power dissipation remains below 2.6mW, resulting in negligible self-heating (<0.6°C rise)-ensuring offset stability is dominated by silicon characteristics, not package thermal effects.