STMicroelectronics TSC2010IST

Overview

TSC2010IST from STMicroelectronics is a precision bidirectional current sense amplifier with 20 V/V fixed gain, -20 to +70 V wide common-mode input range, ±200 µV max offset voltage, and operation from 2.7–5.5 V supply. It enables high-accuracy shunt-based current measurement in high-side or low-side configurations for industrial motor control and solenoid drive feedback loops.

For engineers reviewing the TSC2010IST datasheet, TSC2010IST pinout, TSC2010IST application, or TSC2010IST equivalent, this device supports precision bidirectional sensing down to 123.6 mV full-scale input at ≤0.3% gain error across -40°C to +125°C - critical for overcurrent protection, data acquisition, and closed-loop current regulation in harsh environments.

Technical Context

The TSC2010IST uses a precision instrumentation amplifier topology with rail-to-rail output stage and internal laser-trimmed resistors to achieve 0.3% max gain error and 90 dB min DC common-mode rejection. Its differential input architecture rejects common-mode transients up to 76 V absolute maximum while maintaining stable operation under fast common-mode step events (e.g., 50 V step recovery <2 µs).

It integrates dual reference inputs (VREF1/VREF2) for ratiometric offset adjustment and features active-high shutdown with 20 µA quiescent current. The device operates with no external gain-setting components and maintains linearity error ≤0.03% across its specified Vsense range.

Key Specifications

Pinout & Package

Available in SO8 package (ECOPACK2, RoHS-compliant), with 1.27 mm pitch and standard JEDEC MS-012AC footprint. Thermal resistance θ_JA = 125 °C/W enables operation at full spec without forced airflow.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional current sensing applications.

Compared with INA240A1IDR and MAX4080TASA+, the TSC2010IST uniquely combines dual-reference offset adjustment, -40°C to +125°C qualification, and integrated shutdown - making it optimal for ruggedized bidirectional current monitoring where system-level accuracy, thermal robustness, and power management are co-constrained.

Availability

TSC2010IST is available at Aetrix Electronics and suitable for motor control feedback, solenoid drive monitoring, and industrial process control requiring stable component supply across automotive-grade temperature ranges and long production lifecycles.

Supply support for TSC2010IST 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, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The TSC201x family targets high-accuracy current sensing in harsh industrial environments, emphasizing wide common-mode tolerance, low drift, and robust transient immunity - specifically engineered for closed-loop control in motor drives, power supplies, and automated equipment.

FAQ

What is the minimum shunt voltage the TSC2010IST can accurately measure?

The TSC2010IST supports a minimum full-scale sense voltage of 123.6 mV (at VCC = 2.7 V) with ≤0.3% gain error, corresponding to ~6.2 mV input-referred resolution at 20 V/V gain. This enables accurate measurement of 620 mA through a 20 mΩ shunt or 1.24 A through a 10 mΩ shunt under worst-case conditions.

Can the TSC2010IST be used for high-side sensing in a 48 V battery system?

Yes - its -20 V to +70 V common-mode input range fully covers 48 V nominal battery systems, including load-dump transients up to +65 V. The device maintains 85 dB CMRR at +48 V common-mode and operates reliably from -40°C to +125°C, making it suitable for automotive and telecom power systems.

How does the dual-reference (VREF1/VREF2) feature enable bidirectional current measurement?

VREF1 and VREF2 are internally summed and applied as output offset. When both are tied to VCC/2, the output centers at VCC/2 - allowing positive current to raise and negative current to lower the output symmetrically. This eliminates need for external op-amps or level-shifting circuits in bidirectional applications like regenerative braking monitoring.

Is external filtering required on the IN+ and IN- pins for EMI robustness?

Yes - STMicroelectronics recommends RC filters (e.g., 10 Ω + 1 nF) on both IN+ and IN- pins to suppress RF interference without degrading bandwidth. The device's high CMRR degrades above 100 kHz; proper layout with matched trace lengths and ground guard ring is essential to maintain >85 dB rejection at 1 MHz.