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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics TSC102IDT

Name: TSC102IDT
Brand: STMicroelectronics
SKU: TSC102IDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSC102IDT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: TSC102IDT.pdf

Description:: IC CURRENT SENSE 1 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:4,391

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Product details

Overview

TSC102IDT from STMicroelectronics is a high-side current sense amplifier with integrated signal conditioning amplifier, designed for precision shunt-based current monitoring in systems where input common-mode voltage exceeds supply rail. It features 20 V/V fixed gain, ±2.3 mV input offset voltage, -16 V to 60 V input survival range, and operates from -40 °C to 125 °C - enabling use in automotive battery monitoring and DC motor control.

For engineers reviewing the TSC102IDT datasheet, TSC102IDT pinout, TSC102IDT application, or TSC102IDT equivalent, key selection criteria include its independent V_CM/V_CC operation, 420 µA max supply current, 800 kHz bandwidth, 4 kV HBM ESD rating on V_P/V_M, and dual-amplifier architecture supporting configurable signal conditioning.

Technical Context

The TSC102IDT integrates two functionally distinct amplifiers: a high-voltage current sensing stage (V_P/V_M inputs, A1 output) with 2.8–30 V operating common-mode range and 90 dB DC CMRR, plus a fully accessible signal conditioning amplifier (A2/A3/Out) with rail-to-rail input, 1 MHz GBP, and ±4.5 mV input offset. Both stages share the same 3.5–5.5 V supply but operate independently.

Its architecture enables direct high-side sensing without level-shifting, while the second amplifier allows real-time gain adjustment, filtering, overcurrent detection, or low-pass response - all without external op-amps. Input pins withstand reversed battery (-16 V) and load-dump (60 V) transients, and the device meets automotive-grade reliability per AEC-Q100.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain	20 V/V fixed - eliminates external gain-setting resistors for basic current-to-voltage conversion.
Input Offset Voltage	±2.3 mV max - limits minimum detectable sense voltage to ~115 µV at full scale.
Common-Mode Range	2.8 V to 30 V - supports high-side sensing in 12 V/24 V/36 V automotive and industrial rails.
Supply Current	420 µA max - enables always-on monitoring in battery-powered systems with minimal quiescent drain.
ESD Rating	4 kV HBM on V_P/V_M - provides robustness against electrostatic discharge in assembly and field environments.
Operating Temp	-40 °C to +125 °C - qualified for under-hood automotive and industrial power-conversion applications.
Bandwidth	800 kHz - supports fast transient current detection in motor control and switching power supplies.

Pinout & Package

Package: SO8 (Small Outline Integrated Circuit, 150 mil width), RoHS-compliant, ECOPACK®2.

Pin/Terminal	Circuit Role	Design Meaning
1 (V_P)	High-side sense input	Connects to shunt resistor's high-potential side; withstands up to 60 V during load dump.
2 (Out)	Signal conditioning amplifier output	Ground-referenced output; drives ADC or comparator directly; supports ±10 mA load.
3 (Gnd)	Power ground reference	System ground return for supply and output stage; separate from sense path ground.
4 (A1)	Current sense amplifier output	Internal node between sensing and conditioning stages; accessible for intermediate signal routing.
5 (A2)	Conditioning amp non-inverting input	Configurable gain/filter point; used with A3 to set closed-loop behavior of second amplifier.
6 (A3)	Conditioning amp inverting input	Feedback node for configuring buffer, inverter, or active filter topology with A2 and Out.
7 (V_M)	Low-side sense input	Connects to shunt resistor's low-potential side; survives -16 V reversed-battery condition.
8 (V_CC)	Positive supply	3.5–5.5 V logic-compatible supply; independent of V_P/V_M common-mode voltage.

Key Features

Feature	Design Value
Independent V_CM/V_CC	Enables high-side sensing at 30 V while powered from 5 V - no isolated supply or level shifters needed.
Reversed-battery tolerance	V_P/V_M survive -16 V - protects against battery misconnection in automotive modules.
Integrated dual-amplifier topology	Eliminates need for external op-amp in signal conditioning - reduces BOM count and PCB area.
4 kV HBM ESD on sense inputs	Meets IEC 61000-4-2 system-level ESD immunity requirements without external protection.
Low quiescent current	420 µA max enables continuous monitoring in energy-sensitive applications like UPS and solar charge controllers.

Applications

Automotive Battery Monitoring

DC Motor Current Control

Use Scenario: Real-time monitoring of starter battery and auxiliary circuit currents in 12 V/24 V vehicles, including start-stop systems.

IC Role / Device Role / Timing Role: High-side current sense amplifier translating shunt voltage into ground-referenced analog output for MCU ADC sampling.

Use Value: Survives load-dump (60 V) and reversed-battery (-16 V) events per ISO 7637-2, ensuring reliable operation without external protection diodes.

Use Scenario: Closed-loop current regulation in brushed or BLDC motor drivers for industrial actuators and HVAC blowers.

IC Role / Device Role / Timing Role: Primary current feedback element feeding analog signal to PWM controller or microcontroller for torque/current limiting.

Use Value: 800 kHz bandwidth captures rapid current transients during commutation; 20 V/V gain simplifies scaling to 100 mV/A shunt design.

Photovoltaic String Monitoring

Uninterruptible Power Supply (UPS)

Use Scenario: Per-string current measurement in multi-string solar inverters to detect partial shading or panel failure.

IC Role / Device Role / Timing Role: High-side current sensor placed between PV string and MPPT converter input, referenced to floating string voltage.

Use Value: 30 V common-mode range accommodates up to 25 V string voltage headroom above bus; low 420 µA ICC extends daytime monitoring runtime.

Use Scenario: Input/output current supervision in line-interactive and online UPS systems for overload and battery charge/discharge management.

IC Role / Device Role / Timing Role: Dual-role amplifier: first stage measures DC link current; second stage implements overcurrent latch or analog-to-digital scaling.

Use Value: Integrated signal conditioning enables fast overcurrent shutdown (<1 µs propagation via comparator interface) without adding discrete components.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
INA240A1DR	Higher 80 V common-mode range, 120 V survival; 20 V/V gain; lower 50 µV offset but higher 1.8 mA ICC.	Better suited for 48 V+ industrial systems; less optimal for ultra-low-power battery monitoring due to 4× higher supply current.	Select when >30 V common-mode or >60 V survival is required; avoid if <500 µA ICC budget is critical.
TSC101IDT	Single-stage high-side amplifier only (no signal conditioning amp); identical package, pinout, and 20 V/V gain; 3.5–5.5 V supply.	Lacks configurable output stage - requires external op-amp for gain adjustment or filtering.	Select when only basic current-to-voltage conversion is needed and board space allows external signal conditioning.

Compared with INA240A1DR, TSC102IDT offers lower power and integrated signal conditioning but narrower common-mode range; versus TSC101IDT, it adds design flexibility at the cost of slightly higher complexity and identical footprint.

Availability

TSC102IDT is available at Aetrix Electronics and suitable for automotive battery monitoring, DC motor control, photovoltaic string supervision, and uninterruptible power supply designs requiring stable component supply across extended temperature and harsh electrical environments.

Supply support for TSC102IDT 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, delivering silicon solutions for automotive, industrial, and power management applications with emphasis on reliability and environmental compliance.

The TSC102 belongs to ST's precision analog current sensing portfolio, engineered specifically for high-side measurement in automotive and industrial power systems where supply independence, fault resilience, and signal conditioning integration are critical.

FAQ

What is the maximum allowable differential input voltage (V_P – V_M) for the TSC102IDT?

The absolute maximum differential input voltage is ±20 V, as specified in Table 2 of the datasheet. Exceeding this value risks permanent damage to the internal current-sense amplifier input stage, regardless of common-mode voltage level or operating temperature.

Can the signal conditioning amplifier be used independently of the current sensing stage?

Yes - the A2, A3, and Out pins form a fully functional general-purpose op-amp with rail-to-rail input, 1 MHz GBP, and ±4.5 mV input offset. It operates independently of V_P/V_M and A1, allowing standalone use for sensor buffering, filtering, or comparator interfacing.

Does the TSC102IDT require external compensation capacitors for stability?

No external compensation is required for unity-gain stable operation of the signal conditioning amplifier. The device is internally compensated for loads up to 100 pF; for capacitive loads >100 pF, a series resistor (≥10 Ω) between Out and the load is recommended to maintain phase margin.

How does the TSC102IDT handle reversed-battery conditions?

The V_P and V_M pins are rated for -16 V relative to GND, enabling survival during battery misconnection in automotive systems. This is achieved via internal clamping structures - no external Schottky diodes are needed for basic reversed-battery protection.

TSC102IDT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: Current Sense

Number of Circuits:: 1

Output Type:: -

Slew Rate:: 0.4V/µs

Gain Bandwidth Product:: 1 MHz

-3db Bandwidth:: 800 kHz

Current - Input Bias:: 5 µA

Voltage - Input Offset:: 1.5 mV

Current - Supply:: 420µA

Current - Output / Channel:: 30 mA

Voltage - Supply Span (Min):: 3.5 V

Voltage - Supply Span (Max):: 5.5 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

TSC102IDT FAQ

1.How can I place an order for TSC102IDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSC102IDT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TSC102IDT reliable?

The price and inventory of TSC102IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC102IDT is usually 5 days.

3.What payment methods are accepted for TSC102IDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC102IDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSC102IDT?

TSC102IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSC102IDT order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TSC102IDT?

For technical support, including TSC102IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC102IDT requirements.

6.How does Aetrix verify that TSC102IDT is sourced from the original manufacturer or authorized distributors?

All TSC102IDT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TSC102IDT meets industry standards.

7.What is the process for return or replacement of TSC102IDT?

All TSC102IDT units undergo pre-shipment inspection (PSI). If there is an issue with TSC102IDT, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TSC102IDT part is unused and in its original packaging.

Return procedure for TSC102IDT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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