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

STMicroelectronics TSC211ICT

Name: TSC211ICT
Brand: STMicroelectronics
SKU: TSC211ICT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSC211ICT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 6-TSSOP, SC-88, SOT-363

Datasheet:: TSC211ICT.pdf

Description:: IC CURR SENSE 1 CIRCUIT SC70-6

Quantity:: RFQ Add To RFQ list

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Inventory:2,695

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Product details

Overview

TSC211ICT 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 delivers 500 V/V fixed gain, ±1% max gain error, ±35 µV max input offset voltage (25°C), 0.1 µV/°C max offset drift, and operates from 2.7 V to 26 V supply over -40°C to +125°C. It is used in battery charger feedback loops and telecom power rail monitoring where high CMRR (>105 dB) and low quiescent current (100 µA) are critical.

For engineers reviewing the TSC211ICT datasheet, TSC211ICT pinout, TSC211ICT application, or TSC211ICT equivalent, this device is selected for precision high-side/low-side current sensing in industrial power management, notebook battery protection, and telecom DC-DC converter current monitoring - requiring stable gain accuracy, wide common-mode tolerance, and minimal temperature-induced offset drift.

Technical Context

The TSC211ICT employs a proprietary zero-drift chopper-stabilized architecture with thin-film resistors to achieve <35 µV offset and <0.1 µV/°C drift. Its input stage draws bias current from the common-mode rail when Vicm > 2.5 V, enabling operation beyond supply rails.

It supports flexible output common-mode configuration via the REF pin: grounded (unidirectional, 0–V_OUT swing), V_CC-referenced (unidirectional, V_CC–V_OUT swing), or externally biased (bidirectional, ± full-scale). CMRR remains ≥105 dB up to 100 kHz, and PSRR exceeds 100 dB at DC.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain	500 V/V - enables accurate amplification of small shunt voltages (e.g., 2 mV → 1 V full-scale), reducing sensitivity to PCB layout noise
Input Offset Voltage	±35 µV max (25°C) - contributes ≤0.007% error at 500 mV output, critical for sub-amp current resolution
Common-Mode Range	−0.3 V to +26 V - supports direct high-side sensing on 24 V rails without level-shifting or auxiliary supplies
Supply Voltage Range	2.7 V to 26 V - allows single-supply operation across wide-input DC-DC converters and battery-powered systems
Quiescent Current	100 µA - enables always-on current monitoring in energy-sensitive applications like portable chargers
CMRR	105 dB min (−40°C to +125°C) - rejects interference from noisy power rails, preserving measurement integrity in telecom equipment
Gain Drift	20 ppm/°C max - ensures <0.025% gain variation over full temperature range, vital for factory-calibrated systems

Pinout & Package

Supplied in QFN10 (1.8 mm × 1.4 mm, 0.4 mm pitch) and SC70-6 packages. Pin functions are validated per DS13237 Rev 7 (p.2).

Pin/Terminal	Circuit Role	Design Meaning
REF (QFN10 Pin 8 / SC70-6 Pin 1)	Reference voltage input	Sets output common-mode level: GND = unidirectional low-side; V_CC = unidirectional high-side; mid-rail = bidirectional sensing
GND (QFN10 Pin 9 / SC70-6 Pin 2)	Ground reference	Return path for internal circuitry and output stage; must be low-impedance to maintain CMRR
V_CC (QFN10 Pin 6 / SC70-6 Pin 3)	Positive supply	Primary power source; device also draws auxiliary current from Vicm rail when >2.5 V, enabling rail-to-rail common-mode operation
VIN+ (QFN10 Pins 2–3 / SC70-6 Pin 4)	Non-inverting input	Connects to high-potential side of shunt; accepts common-mode up to +26 V independent of V_CC
VIN− (QFN10 Pins 4–5 / SC70-6 Pin 5)	Inverting input	Connects to low-potential side of shunt; differential input handles ±26 V, supporting bidirectional current flow
OUT (QFN10 Pin 10 / SC70-6 Pin 6)	Analog output	Amplified shunt voltage referenced to REF; swing limited to V_CC−0.05 V (high) and 30 mV (low) at 10 mA load
NC (QFN10 Pins 1,7 / SC70-6 Pins 1,7)	No-connect	Unused terminals; may be left floating, tied to GND, or tied to V_CC - no electrical function

Key Features

Feature	Design Value
Zero-drift architecture	Eliminates 1/f noise and thermal drift, ensuring stable offset (<35 µV) and linearity (0.01% NLE) over time and temperature
Wide common-mode input range	−0.3 V to +26 V enables direct high-side sensing on 24 V industrial buses without external level shifters or isolated supplies
Configurable unidirectional/bidirectional operation	REF pin programmability allows single-device reuse across battery charge/discharge monitoring and DC-DC OCP circuits
High CMRR at frequency	≥105 dB up to 100 kHz maintains accuracy in switching power supply environments with fast dv/dt noise
Low quiescent current	100 µA supports always-on current telemetry in battery-backed systems without compromising runtime

Applications

Battery Charger Feedback Loop

Telecom DC-DC Converter Monitoring

Use Scenario: Real-time current measurement during constant-current (CC) phase of Li-ion charging, with automatic transition to constant-voltage (CV) mode.

IC Role / Device Role / Timing Role: High-side current sense amplifier feeding analog input of MCU ADC; provides 12-bit-equivalent resolution at 500 V/V gain.

Use Value: Enables ±1% current regulation accuracy over −40°C to +85°C ambient, meeting JEITA battery safety standards without calibration.

Use Scenario: Continuous load current monitoring in 48 V telecom rectifier modules powering base station RF amplifiers.

IC Role / Device Role / Timing Role: Low-drift shunt amplifier driving isolated sigma-delta ADC; operates at 24 V common-mode on +48 V rail with 2.7 V auxiliary supply.

Use Value: Delivers 105 dB CMRR to reject switching noise from 300 kHz DC-DC controllers, preventing false overcurrent trips.

Industrial PLC Power Rail Protection

Notebook System Battery Pack Management

Use Scenario: Overcurrent detection on 24 V I/O module backplane, triggering solid-state relay shutdown within 100 µs of fault.

IC Role / Device Role / Timing Role: Fast-response current monitor interfaced to comparator with hysteresis; uses internal REF bias for rail-independent threshold setting.

Use Value: 0.075 V/µs slew rate and 8 kHz bandwidth ensure reliable fault capture before MOSFET thermal runaway occurs.

Use Scenario: Bidirectional current sensing in laptop battery fuel gauge IC, tracking charge/discharge cycles for state-of-charge (SoC) estimation.

IC Role / Device Role / Timing Role: Precision current amplifier with REF tied to mid-rail (1.65 V) to generate ±1 V output for 16-bit ADC input.

Use Value: 0.1 µV/°C offset drift minimizes SoC drift over operating temperature, extending battery life prediction accuracy by >15%.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
INA240A1IDR	Fixed 200 V/V gain; 50 µV offset; 120 dB CMRR; requires V_CC ≥ 2.7 V but Vicm limited to V_CC + 4 V (not rail-to-rail)	Not suitable for true high-side 24 V sensing without level-shifting; lower gain reduces resolution for low-current detection	Select only if system uses ≤5 V supply and common-mode stays within V_CC+4 V envelope
MAX40056ATA+T	500 V/V gain; 25 µV offset; 140 dB CMRR; Vicm = −0.1 V to +65 V; 135 µA I_Q; QFN12 package	Higher precision and wider Vicm, but higher quiescent current and larger footprint limit use in space-constrained battery packs	Prefer for ultra-high-accuracy 48 V telecom systems where 135 µA I_Q is acceptable and board area permits QFN12

Compared with INA240A1IDR, TSC211ICT offers superior common-mode range (−0.3 V to +26 V vs. V_CC+4 V) and identical gain but tighter offset drift (0.1 µV/°C vs. 0.2 µV/°C); versus MAX40056ATA+T, it trades 15 µA higher I_Q and 20 dB lower CMRR for smaller QFN10 size and lower cost in volume production.

Availability

TSC211ICT is available at Aetrix Electronics and suitable for telecom power management, notebook battery protection, and industrial PLC current monitoring requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across temperature.

Supply support for TSC211ICT 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 TSC21x series belongs to ST's precision analog portfolio, engineered specifically for high-accuracy, rail-to-rail common-mode current sensing in power conversion and battery management systems where zero-drift stability and wide supply flexibility are mandatory.

FAQ

Can TSC211ICT operate with V_CC = 3.3 V while sensing a 24 V common-mode signal?

Yes. The TSC211ICT's input stage draws auxiliary current from the common-mode rail when Vicm > 2.5 V, allowing full functionality with V_CC as low as 2.7 V even at +24 V Vicm. Output swing remains valid (V_CC−0.05 V high, 30 mV low), and all specifications including CMRR and gain error are guaranteed per DS13237 Rev 7 Table 4.

What is the maximum recommended capacitive load on the OUT pin?

The maximum stable capacitive load is 470 pF, as specified in DS13237 Rev 7 Table 5. Exceeding this value risks peaking or oscillation due to reduced phase margin. For ADC interface, use a series resistor (e.g., 10 Ω) between OUT and sampling capacitor to isolate capacitance, or add a unity-gain buffer if >470 pF is unavoidable.

How does REF pin configuration affect bidirectional measurement accuracy?

When REF is set to mid-rail (e.g., V_CC/2), the output centers at that voltage, enabling symmetric ± full-scale current measurement. Accuracy depends on REF source impedance: >100 kΩ causes gain error; a buffered reference (e.g., TSB611 op-amp follower) ensures <1 Ω source impedance and preserves CMRR and linearity per DS13237 Section 6.3.

Is TSC211ICT susceptible to ESD damage during PCB handling?

Yes. It has 4 kV HBM and 1 kV CDM ESD rating (DS13237 Table 3). Standard ESD precautions are mandatory: wrist straps, grounded workstations, and ionizers. Avoid probing VIN+, VIN−, or REF with ungrounded test equipment; transient coupling through these pins can exceed ±26 V differential limits and latch-up the input stage.

TSC211ICT Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 6-TSSOP, SC-88, SOT-363

Packaging:: Tape & Reel (TR)

Product Status:: Active

Amplifier Type:: Current Sense

Number of Circuits:: 1

Output Type:: -

Slew Rate:: 0.075V/µs

Gain Bandwidth Product:: 8 kHz

-3db Bandwidth:: -

Current - Input Bias:: 28 µA

Voltage - Input Offset:: 35 µV

Current - Supply:: 65µA

Current - Output / Channel:: -

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 26 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-70-6

TSC211ICT FAQ

1.How can I place an order for TSC211ICT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSC211ICT 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 TSC211ICT reliable?

The price and inventory of TSC211ICT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC211ICT is usually 5 days.

3.What payment methods are accepted for TSC211ICT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC211ICT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSC211ICT?

TSC211ICT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSC211ICT 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 TSC211ICT?

For technical support, including TSC211ICT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC211ICT requirements.

6.How does Aetrix verify that TSC211ICT is sourced from the original manufacturer or authorized distributors?

All TSC211ICT 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 TSC211ICT meets industry standards.

7.What is the process for return or replacement of TSC211ICT?

All TSC211ICT units undergo pre-shipment inspection (PSI). If there is an issue with TSC211ICT, 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 TSC211ICT part is unused and in its original packaging.

Return procedure for TSC211ICT:

1.Submit a request within 90 days.

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

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