Diodes Incorporated ZXCT213CDSJ-7

Overview

ZXCT213CDSJ-7 from Diodes Incorporated is a zero-drift, high-precision current-sense amplifier with 50V/V fixed gain, ±0.5% max gain error over temperature, ±90μV max input offset voltage, and rail-to-rail output swing - designed for accurate low-side or high-side shunt-based current monitoring in industrial power supplies and battery management systems.

For engineers reviewing the ZXCT213CDSJ-7 datasheet, ZXCT213CDSJ-7 pinout, ZXCT213CDSJ-7 application, or ZXCT213CDSJ-7 equivalent, this device supports 10mV full-scale shunt drops at common-mode voltages up to 26V, operates from 2.7V to 26V supply, and delivers 80kHz bandwidth with 100μA max quiescent current across –40°C to +125°C.

Technical Context

The ZXCT213CDSJ-7 implements a zero-drift chopper-stabilized architecture with post-trim calibration to achieve ±90μV max V_OS and 10ppm/°C max gain drift over full temperature range. Its differential input stage accepts common-mode voltages from –0.3V to 26V while powered from as low as 2.7V, enabling high-side sensing on rails far exceeding supply voltage.

It features rail-to-rail output capable of driving 10kΩ loads within 50mV of supply rails, supports unidirectional and bidirectional current measurement via REF pin biasing, and maintains 100dB+ CMRR across its operating range - critical for rejecting noise in noisy power-conversion environments.

Key Specifications

Pinout & Package

Package: U-QFN1418-10 (1.4mm × 1.8mm, 0.5mm pitch, wettable flank).

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA240A1QDRQ1 and MAX40056ATA+T, ZXCT213CDSJ-7 uniquely combines 50V/V precision gain, 26V common-mode tolerance, zero-drift stability, and ultra-low quiescent current - making it optimal for wide-input industrial and automotive-grade current monitoring where supply headroom and thermal drift are constrained.

Availability

ZXCT213CDSJ-7 is available at Aetrix Electronics and suitable for industrial power supplies, battery management systems, telecom rectifiers, and high-performance computing power rails requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant sourcing.

Supply support for ZXCT213CDSJ-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 ICs for power management, signal integrity, and connectivity applications.

ZXCT21x belongs to Diodes' precision analog product line, engineered specifically for high-accuracy, low-power current sensing in harsh industrial and telecom environments with extended temperature and voltage requirements.

FAQ

What is the maximum common-mode voltage the ZXCT213CDSJ-7 can tolerate?

The ZXCT213CDSJ-7 supports a common-mode input voltage range of –0.3V to +26V, enabling direct high-side sensing on 24V industrial buses without external level-shifting circuitry. This rating is absolute and tested per JEDEC standards, with internal ESD protection rated at ±5kV HBM on all analog pins.

Can ZXCT213CDSJ-7 be used for bidirectional current sensing?

Yes - by applying a precise bias voltage (e.g., V+/2) to the REF pin, the OUT pin swings symmetrically above and below that reference, enabling accurate measurement of both charge and discharge currents. The rail-to-rail output and low offset ensure minimal dead-zone error at zero-crossing points.

Does ZXCT213CDSJ-7 require external gain-setting components?

No - it integrates a factory-trimmed 50V/V gain resistor network. Unlike programmable current-sense amplifiers, ZXCT213CDSJ-7 has no external gain resistors, eliminating matching errors, PCB area, and thermal drift contributions from discrete components.

What package thermal characteristics apply to ZXCT213CDSJ-7?

ZXCT213CDSJ-7 uses the U-QFN1418-10 package with R_θJA = 115°C/W and R_θJC = 50°C/W (JEDEC 51-7 compliant). Its wettable flanks support automated optical inspection, and thermal vias under the exposed pad reduce junction-to-board resistance by up to 40% versus standard QFN layouts.