Diodes Incorporated ZXCT210ADW-7

Overview

ZXCT210ADW-7 from Diodes Incorporated is a zero-drift, high-precision current-shunt monitor IC with 200V/V fixed gain, ±30μV max offset voltage, and rail-to-rail output, designed for accurate bidirectional or unidirectional current sensing across shunt resistors at common-mode voltages from –0.3V to 26V in industrial power supplies and battery management systems.

For engineers reviewing the ZXCT210ADW-7 datasheet, ZXCT210ADW-7 pinout, ZXCT210ADW-7 application, or ZXCT210ADW-7 equivalent, this device supports low-10mV full-scale shunt drops, operates from 2.7V–26V supply, delivers <0.8% gain error over temperature, and enables high-accuracy ADC interfacing in high-side/low-side configurations.

Technical Context

The ZXCT210ADW-7 uses a zero-drift chopper-stabilized architecture with post-trim calibration to achieve ±30μV max input offset and 10ppm/°C max gain drift over –40°C to +125°C. Its differential input stage rejects common-mode signals up to 26V while operating from as low as 2.7V supply.

It features rail-to-rail output swing (within 50mV of rails), 14kHz bandwidth (C_L = 10pF), and 100μA max quiescent current. The REF pin accepts an external bias voltage to support bidirectional current measurement, and IN+/IN– inputs are optimized for direct connection to shunt resistor terminals.

Key Specifications

Pinout & Package

SOT363-6 package: ultra-compact, surface-mount, thermally enhanced plastic package with exposed pad (not electrically connected), suitable for space-constrained PCB layouts in server VRMs and portable electronics.

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, the ZXCT210ADW-7 uniquely balances 26V common-mode tolerance, 200V/V gain, ±30μV offset, and REF-based bidirectional support in SOT363 - making it optimal for industrial 24V systems requiring minimal footprint and calibrated accuracy without automotive overhead.

Availability

ZXCT210ADW-7 is available at Aetrix Electronics and suitable for server power delivery, battery management systems, industrial PLC I/O modules, and high-performance GPU power rails requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.

Supply support for ZXCT210ADW-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 devices, with emphasis on high-reliability, energy-efficient solutions for industrial, computing, and communications markets.

The ZXCT21x series belongs to Diodes' precision analog product line, engineered specifically for high-accuracy, low-power current sensing in harsh thermal and electrical environments - targeting applications where shunt-based measurement must maintain sub-1% error across wide voltage and temperature ranges.

FAQ

What is the maximum common-mode voltage the ZXCT210ADW-7 can tolerate?

The ZXCT210ADW-7 supports a common-mode input voltage range of –0.3V to +26V, verified per Absolute Maximum Ratings and Recommended Operating Conditions in DS45449 Rev. 3–2. This allows direct high-side sensing on 24V industrial buses without attenuation or level-shifting circuitry, provided the shunt resistor is placed between the supply and load.

Can the ZXCT210ADW-7 measure bidirectional current?

Yes - by applying a mid-supply voltage (e.g., V+/2) to the REF pin, the OUT pin swings above and below that reference in proportion to current direction. The device's rail-to-rail output and zero-drift architecture ensure symmetrical positive/negative reporting with <0.8% gain error across –40°C to +125°C, as confirmed in the Typical Applications section and Electrical Characteristics table.

What is the minimum shunt voltage this device can accurately resolve?

With ±30μV max input offset and 200V/V gain, the ZXCT210ADW-7 resolves down to ~150μV at the output - corresponding to 0.75mV shunt drop. However, the datasheet specifies 10mV full-scale support, meaning it is optimized and characterized for reliable operation at ≥10mV shunt voltage, delivering guaranteed ±0.8% gain error and <1μV/°C drift in that range.

Does the SOT363 package include an exposed thermal pad?

No - the SOT363 package used for ZXCT210ADW-7 is a standard 6-pin plastic surface-mount package without an exposed thermal pad. Thermal resistance is specified as R_θJA = 228°C/W (JEDEC 51-7 test board). For high-power-density designs, the U-QFN1418-10 variant (R_θJA = 115°C/W) offers superior thermal performance with its exposed pad, but the DW suffix confirms this part uses the SOT363 variant.