STMicroelectronics TSC214IYCT

Overview

TSC214IYCT from STMicroelectronics is a zero-drift, high-precision current sense amplifier optimized for bidirectional or unidirectional shunt-based current measurement across -0.3 V to +26 V common-mode voltage range. It features 100 V/V fixed gain, ±1% max gain error, ±60 µV max input offset voltage (25 °C), 0.1 µV/°C max offset drift, and operates from 2.7 V to 26 V supply with quiescent current of 100 µA. It is used in battery chargers and industrial power management systems requiring accurate low-side or high-side sensing.

For engineers reviewing the TSC214IYCT datasheet, TSC214IYCT pinout, TSC214IYCT application, or TSC214IYCT equivalent, key selection criteria include its 100 V/V gain accuracy, wide common-mode tolerance, zero-drift architecture for stable DC performance, SC70-6 and QFN10 package options, and support for both unidirectional (GND- or VCC-referenced) and bidirectional (VREF-adjustable) output configurations.

Technical Context

The TSC214IYCT employs a proprietary zero-drift chopper-stabilized instrumentation amplifier architecture that achieves ±60 µV max input offset voltage and 0.1 µV/°C max offset drift over –40 °C to +125 °C. Its input stage supports common-mode voltages extending 0.3 V below ground and up to 26 V - independent of supply voltage - enabling true high-side sensing without level-shifting circuitry.

Output common-mode voltage is programmable via the REF pin, allowing flexible unidirectional (GND- or VCC-tied REF) or bidirectional (mid-supply or user-defined REF) operation. Gain is fixed at 100 V/V by internal thin-film resistor networks (R1/R2 = 1 MΩ, R3/R4 = 10 kΩ), ensuring ±1% gain error and 20 ppm/°C max gain drift across temperature and supply variations.

Key Specifications

Pinout & Package

Available in SC70-6 (1.3 × 0.8 mm) and QFN10 (1.8 × 1.4 mm) packages; both RoHS-compliant and qualified for industrial temperature range (–40 °C to +125 °C). Pin functions are identical across packages, with NC pins internally disconnected and safe to float or tie to GND/VCC.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current sense amplifier applications.

Compared with TSC214IYCT, INA240A1IDR offers higher speed and supply flexibility but lacks programmable REF and has non-adjustable gain; TSC213IYCT shares identical footprint and architecture but trades gain for lower offset-limited resolution - making TSC214IYCT optimal for balanced 100–10 A sensing with minimal design iteration.

Availability

TSC214IYCT is available at Aetrix Electronics and suitable for industrial power monitoring, battery charger feedback, and telecom DC-DC converter protection requiring stable component supply across extended temperature and voltage ranges.

Supply support for TSC214IYCT 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, specializing in analog, power, and microcontroller solutions for industrial, automotive, and consumer markets.

The TSC21x series belongs to ST's precision analog portfolio, designed specifically for high-accuracy, wide common-mode current sensing in harsh industrial and battery-powered environments where zero-drift stability and supply robustness are critical.

FAQ

What is the maximum common-mode voltage the TSC214IYCT can handle?

The TSC214IYCT supports a common-mode input voltage range of –0.3 V to +26 V, independent of supply voltage. This allows direct high-side sensing on 24 V rails and operation below ground - verified per Absolute Maximum Ratings Table 3 in DS13237 Rev 7. Exceeding +26 V or –0.3 V risks permanent damage.

Can the TSC214IYCT be used for bidirectional current sensing?

Yes - by applying a mid-supply voltage (e.g., VCC/2) to the REF pin, the output swings symmetrically around that reference, enabling ± full-scale measurement. The device's zero-drift architecture ensures matched positive/negative offset and gain error, supporting accurate bidirectional energy metering in battery systems.

Does the TSC214IYCT require external gain-setting resistors?

No - gain is fixed at 100 V/V by internal thin-film resistor networks (R1/R2 = 1 MΩ, R3/R4 = 10 kΩ). No external components are needed for gain configuration, reducing BOM count and layout sensitivity while guaranteeing ±1% gain error and 20 ppm/°C drift over temperature.

Which package options are available for the TSC214IYCT?

The TSC214IYCT is offered in SC70-6 (1.3 × 0.8 mm) and QFN10 (1.8 × 1.4 mm) packages. Both are lead-free, RoHS-compliant, and rated for –40 °C to +125 °C operation. Pin functions are identical; NC pins may be left floating or tied to GND for mechanical reinforcement.