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

STMicroelectronics TSC2012IYDT

Name: TSC2012IYDT
Brand: STMicroelectronics
SKU: TSC2012IYDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSC2012IYDT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: TSC2012IYDT.pdf

Description:: IC CURRENT SENSE 1 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TSC2012IYDT from STMicroelectronics is a precision bidirectional current sense amplifier with 100 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 monitoring in high-side or low-side configurations for industrial motor control and solenoid drivers.

For engineers reviewing the TSC2012IYDT datasheet, TSC2012IYDT pinout, TSC2012IYDT application, or TSC2012IYDT equivalent, this page delivers verified specifications, SO8 package layout, real-world use cases in overcurrent protection and feedback loops, and validated alternative parts with documented functional differences.

Technical Context

The TSC2012IYDT uses a precision instrumentation amplifier topology optimized for high common-mode rejection (≥85 dB) across -20 to +70 V, supporting accurate sensing of differential voltages as low as 22.7 mV full-scale at ≤0.3% gain error. Its rail-to-rail output stage delivers ±30 mA drive capability with 390 kHz small-signal bandwidth (V_CC = 5 V).

It integrates dual reference inputs (VREF1/VREF2) for ratiometric offset adjustment and features active-high shutdown with 20 µA quiescent current. The device maintains linearity (≤0.03%) and low offset drift (5 µV/°C) over -40 to +125 °C, enabling stable performance in harsh industrial environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain	100 V/V - sets output = 100 × (V_IN+ – V_IN−), enabling 24 mV full-scale input to produce ~2.4 V output at V_CC = 5 V
Common-mode voltage range	-20 V to +70 V - supports direct sensing on high-side bus rails up to 70 V without level-shifting circuitry
Offset voltage (max)	±200 µV - ensures <0.1% measurement error at 200 mV sense voltage, critical for low-current detection
Supply voltage range	2.7 V to 5.5 V - compatible with standard 3.3 V and 5 V logic domains and battery-backed systems
Gain error (max)	0.3% - guarantees calibrated current readout accuracy without per-unit trimming in production
Bandwidth (-3 dB)	390 kHz (typ. at V_CC = 5 V) - sufficient for PWM-based motor current sampling up to ~20 kHz switching frequencies
Shutdown current	20 µA - reduces system standby power in energy-sensitive applications like portable test equipment

Pinout & Package

Supplied in SO8 package (8-pin small outline integrated circuit), with exposed pad for thermal dissipation. Pinout matches industry-standard SO8 footprint and is compatible with automated PCB assembly.

Pin/Terminal	Circuit Role	Design Meaning
1 IN−	Negative input	Connects to shunt resistor low-side terminal; forms differential pair with IN+ for bidirectional sensing
2 GND	Ground reference	Power and signal ground return; must be low-impedance path to minimize noise coupling
3 VREF2	Reference voltage 2	Second input for ratiometric offset calibration; used with VREF1 to set output zero point
4 SHDN	Shutdown control	Active-high logic input; pulls output to high-impedance state when driven >0.7×V_CC
5 OUT	Analog output	Rail-to-rail voltage output proportional to sensed current; drives ADC inputs or comparator thresholds
6 VCC	Positive supply	2.7–5.5 V power input; decoupling capacitor required within 1 cm for stability
7 VREF1	Reference voltage 1	Primary offset adjustment input; tied to VREF2 for symmetric ratiometric configuration
8 IN+	Positive input	Connects to shunt resistor high-side terminal; enables high-side or low-side placement flexibility

Key Features

Feature	Design Value
Bidirectional sensing	Supports current flow in either direction via differential input architecture and ratiometric reference inputs
High CMRR stability	Maintains ≥85 dB common-mode rejection across -20 to +70 V and -40 to +125 °C, minimizing bus noise coupling
Low-power shutdown	Reduces supply current to 20 µA while preserving fast wake-up (<8 µs turn-on time) for duty-cycled monitoring
Wide temperature operation	Specified performance from -40 to +125 °C ambient, validated for industrial motor control and solenoid driver enclosures
Output drive strength	±30 mA sink/source capability enables direct interface to 10 kΩ ADC inputs or comparators without buffering

Applications

Motor Phase Current Monitoring

Solenoid Overcurrent Protection

Use Scenario: Real-time phase current sampling in 3-phase BLDC motor drives using shunt resistors on low-side leg.

IC Role / Device Role / Timing Role: Bidirectional current amplifier converting mV-level shunt voltage to robust 0–5 V analog output synchronized with PWM switching.

Use Value: Enables precise field-oriented control (FOC) and stall detection with <0.3% gain error and 390 kHz bandwidth.

Use Scenario: Fast overcurrent cutoff in 24 V solenoid valve control modules during inrush or short-circuit events.

IC Role / Device Role / Timing Role: High-speed current monitor feeding comparator threshold; responds to 45 mV step in <1 µs (TSC2012 large-signal response).

Use Value: Prevents coil burnout by triggering MOSFET gate shutdown within microseconds of fault onset.

Industrial Data Acquisition Channel

Programmable Power Supply Feedback

Use Scenario: Multi-channel current measurement in modular PLC I/O modules with shared 5 V supply and isolated ADC backplane.

IC Role / Device Role / Timing Role: Precision front-end amplifier providing ratiometric output referenced to system V_REF, rejecting supply ripple.

Use Value: Delivers 0.03% linearity and 5 µV/°C offset drift for calibrated 16-bit ADC digitization across temperature.

Use Scenario: Output current regulation loop in benchtop programmable DC supplies with 0–30 V / 0–5 A range.

IC Role / Device Role / Timing Role: Bidirectional sense amplifier feeding DAC-controlled current limit circuit; supports both sourcing and sinking modes.

Use Value: Enables seamless transition between CV and CC modes with consistent 100 V/V gain and <22.7 mV minimum detectable sense voltage.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
INA240A1IDR	20 V/V gain (fixed), 80 V common-mode, 50 µV offset, 4 V/V to 100 V/V variants available	Lacks dual reference inputs for ratiometric zeroing; requires external op-amp for offset nulling in unidirectional designs	Select for cost-sensitive, single-gain applications where 20 V/V suffices and board space permits external compensation
TSC2011IYDT	60 V/V gain, identical package/pinout, same -20 to +70 V common-mode and 0.3% gain error	Higher sensitivity than TSC2012 for mid-range currents (e.g., 40 mV FS vs. 24 mV FS), lower full-scale resolution	Choose when design targets 40–100 mV shunt drops and requires margin against saturation at high common-mode transients

Compared with INA240A1IDR, TSC2012IYDT offers superior offset adjustability and tighter gain tolerance but less flexible gain selection; versus TSC2011IYDT, it provides higher resolution for low-current detection at the expense of reduced dynamic range before output clipping.

Availability

TSC2012IYDT is available at Aetrix Electronics and suitable for industrial motor control, solenoid actuation, and programmable power supply designs requiring stable component supply across extended temperature and voltage ranges.

Supply support for TSC2012IYDT 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 was developed specifically for high-accuracy, high-common-mode current sensing in industrial automation and motor control systems-emphasizing precision, thermal stability, and robustness in noisy electrical environments.

FAQ

What is the minimum detectable shunt voltage for TSC2012IYDT at full accuracy?

The TSC2012IYDT maintains ≤0.3% gain error down to 22.7 mV full-scale input (at V_CC = 5 V, T = -40 to +125 °C), corresponding to 227 µV output resolution at 100 V/V gain. This enables reliable detection of sub-amp currents with typical 10 mΩ shunts.

Can TSC2012IYDT be used for high-side sensing above 48 V bus voltage?

Yes-its -20 V to +70 V common-mode input range is explicitly rated for direct connection to 70 V rails. The device survives absolute maximum common-mode of -25 V to +76 V, and internal ESD protection (2000 V HBM) enhances robustness in industrial transients.

How does the dual-reference (VREF1/VREF2) feature improve system accuracy?

VREF1 and VREF2 allow ratiometric offset adjustment: tying both to a stable reference (e.g., V_CC/2) centers the output at mid-supply for bidirectional sensing, eliminating dependency on internal reference drift and improving total system accuracy by up to 0.1%.

Is the SO8 package thermally adequate for continuous 30 mA output current?

Yes-the SO8 package has R_THJA = 125 °C/W (typical). At 30 mA load and 5 V supply, power dissipation remains <150 mW, resulting in <20 °C junction rise above ambient-well within the 150 °C absolute max rating and suitable for sealed industrial enclosures.

TSC2012IYDT 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:: 5.2V/µs

Gain Bandwidth Product:: -

-3db Bandwidth:: 490 kHz

Current - Input Bias:: 350 µA

Voltage - Input Offset:: 500 µV

Current - Supply:: 1.6mA

Current - Output / Channel:: 36 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 5.5 V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

TSC2012IYDT FAQ

1.How can I place an order for TSC2012IYDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSC2012IYDT 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 TSC2012IYDT reliable?

The price and inventory of TSC2012IYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC2012IYDT is usually 5 days.

3.What payment methods are accepted for TSC2012IYDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC2012IYDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSC2012IYDT?

TSC2012IYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSC2012IYDT 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 TSC2012IYDT?

For technical support, including TSC2012IYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC2012IYDT requirements.

6.How does Aetrix verify that TSC2012IYDT is sourced from the original manufacturer or authorized distributors?

All TSC2012IYDT 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 TSC2012IYDT meets industry standards.

7.What is the process for return or replacement of TSC2012IYDT?

All TSC2012IYDT units undergo pre-shipment inspection (PSI). If there is an issue with TSC2012IYDT, 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 TSC2012IYDT part is unused and in its original packaging.

Return procedure for TSC2012IYDT:

1.Submit a request within 90 days.

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

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