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STMicroelectronics TSC211IQT
- Part No.:
- TSC211IQT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 10-WFQFN
- Datasheet:
-
TSC211IQT.pdf
- Description:
- LOW / HIGH SIDE BIDIRECTIONAL, Z
- Quantity:
- Payment:
- Shipping:
Inventory:2,466
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Product details
Overview
TSC211IQT 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), and operates from 2.7 V to 26 V supply with quiescent current of 100 µA. It is used in battery chargers and telecom power management where high CMRR (>105 dB) and low offset drift (0.1 µV/°C) ensure accuracy under industrial temperature (-40 to 125 °C).
For engineers reviewing the TSC211IQT datasheet, TSC211IQT pinout, TSC211IQT application, or TSC211IQT equivalent, key selection criteria include its 500 V/V gain configuration, QFN10 (1.8×1.4 mm) package, REF-pin programmable output common-mode level, high-side/low-side sensing capability, and guaranteed performance over full industrial temperature and supply voltage ranges.
Technical Context
The TSC211IQT employs a proprietary zero-drift chopper-stabilized architecture that actively corrects input offset and drift, enabling <35 µV offset and <0.1 µV/°C drift over -40 to 125 °C. Its input stage draws bias current from the common-mode rail when Vicm > 2.5 V - a feature enabling operation beyond supply rails.
Output common-mode voltage is set via the REF pin, supporting unidirectional (GND- or VCC-referenced) and bidirectional (mid-supply or user-defined reference) configurations. Gain is fixed at 500 V/V by internal thin-film resistor ratios (R1/R2 = 1 MΩ / 2 kΩ), and CMRR exceeds 105 dB across 0–26 V common-mode range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 500 V/V - fixed ratio enabling precise scaling of mV-level shunt voltage to measurable output voltage |
| Input Offset Voltage | ±35 µV max at 25 °C - ensures sub-100 µV total input-referred error in precision current sensing |
| Common-Mode Range | -0.3 V to +26 V - supports both high-side and low-side shunt placement independent of supply voltage |
| Supply Voltage Range | 2.7 V to 26 V - enables direct integration into 3.3 V, 5 V, 12 V, and 24 V power rails without LDO |
| Quiescent Current | 100 µA - allows always-on current monitoring in battery-powered systems with minimal standby drain |
| CMRR | 105 dB min - rejects interference from noisy power rails, critical in telecom and industrial SMPS |
| Gain Error | ±1% max - reduces calibration burden in production test; enables single-point trim for <0.5% system error |
Pinout & Package
Package: QFN10 (1.8 mm × 1.4 mm, 0.4 mm pitch, exposed thermal pad). Pin 1 marked by dot; pin 10 is OUT; pins 1 and 7 are NC (no connect) and may be left floating, tied to GND, or tied to VCC per layout guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No connection - electrically isolated; no routing required |
| 2,3 | VIN+ | Non-inverting input - connects to high-side or low-side shunt terminal; accepts up to 26 V common-mode |
| 4,5 | VIN− | Inverting input - connects to opposite shunt terminal; differential sensing node with matched input impedance |
| 6 | OUT | Analog output - provides amplified (×500) differential voltage referenced to REF; drives 10 kΩ load |
| 7 | NC | No connection - electrically isolated; no routing required |
| 8 | REF | Reference input - sets output common-mode voltage (e.g., GND for unidirectional, VCC/2 for bidirectional) |
| 9 | GND | Analog ground - primary return path for input bias and output current; must be low-impedance |
| 10 | VCC | Power supply - powers internal circuitry; also serves as secondary power source when Vicm > 2.5 V |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | Eliminates 1/f noise and long-term offset drift - enables stable µV-level accuracy over time and temperature |
| Wide common-mode input range | -0.3 V to +26 V - permits shunt placement on either side of load without level-shifting circuitry |
| REF-pin programmable output common mode | Supports GND-, VCC-, or mid-rail referenced outputs - simplifies ADC interfacing and bidirectional current detection |
| High CMRR (>105 dB) | Maintains accuracy despite large common-mode transients - essential in switching power supplies and motor drives |
| Low quiescent current (100 µA) | Enables continuous current monitoring in energy-constrained applications like portable battery packs |
Applications
| Telecom Power Management | Battery Charger Monitoring |
|---|---|
|
Use Scenario: Real-time current monitoring in 48 V DC-DC converters feeding base station RF modules. IC Role / Device Role / Timing Role: High-side current sense amplifier measuring load current through 1 mΩ shunt, rejecting 48 V rail noise. Use Value: Enables overcurrent protection and efficiency optimization with <1% gain error and 105 dB CMRR at full rail voltage. |
Use Scenario: Bidirectional current sensing in USB PD 3.0+ battery charging circuits with 5–20 V input range. IC Role / Device Role / Timing Role: Unidirectional or bidirectional shunt amplifier with REF pin set to VCC/2 for ±5 A measurement range. Use Value: Delivers ±35 µV offset and 0.1 µV/°C drift - ensuring charge/discharge accuracy across -10 °C to 60 °C ambient. |
| Industrial Motor Drive Feedback | Notebook System Power Rail Monitoring |
|
Use Scenario: Low-side current sensing in 24 V BLDC motor gate driver power stages. IC Role / Device Role / Timing Role: Precision current amplifier feeding analog input of MCU ADC; operates at 125 °C junction temperature. Use Value: Maintains ±1% gain error and 100 µA IQ across -40 to 125 °C - enabling reliable overcurrent shutdown without derating. |
Use Scenario: Multi-rail current monitoring (CPU core, GPU, DDR) in thin-and-light notebooks with 3.3 V/5 V/12 V supplies. IC Role / Device Role / Timing Role: Compact QFN10 current sense amplifier placed adjacent to each VRM output shunt. Use Value: 1.8×1.4 mm footprint and 100 µA IQ minimize PCB area and standby power - critical for fanless thermal design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | 500 V/V gain, ±150 µV offset, 120 kHz BW, SOIC-8 package | Higher offset and lower CMRR (120 dB) - less suitable for ultra-low-current (<100 mA) precision sensing | Preferred where AEC-Q100 qualification and automotive-grade reliability are mandatory |
| MAX40056ATA+T | 500 V/V gain, ±50 µV offset, 400 kHz BW, 8-WLP package | Higher bandwidth but larger offset drift (0.5 µV/°C); no REF pin - fixed GND-referenced output | Chosen when fast transient response is prioritized over temperature stability in compact space-constrained designs |
Compared with INA240A1QDRQ1 and MAX40056ATA+T, the TSC211IQT offers superior offset stability (±35 µV, 0.1 µV/°C) and flexible REF-based output referencing - making it optimal for industrial and telecom applications demanding long-term accuracy and bidirectional sensing flexibility.
Availability
TSC211IQT is available at Aetrix Electronics and suitable for telecom equipment, battery chargers, and industrial motor drives requiring stable component supply, extended temperature support (-40 to 125 °C), and high-precision current measurement without external calibration.
Supply support for TSC211IQT 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, designing and manufacturing analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
The TSC211IQT belongs to ST's TSC21x zero-drift current sense amplifier family, engineered specifically for high-accuracy, wide common-mode shunt-based current measurement in power conversion and battery management systems.
FAQ
What is the maximum common-mode voltage the TSC211IQT can handle?
The TSC211IQT 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 without level shifters and enables operation even when input voltage exceeds VCC - powered internally from the common-mode rail above 2.5 V.
How does the REF pin affect output behavior?
The REF pin sets the output common-mode voltage: grounding REF yields GND-referenced unidirectional output; connecting REF to VCC yields VCC-referenced output; applying VCC/2 enables symmetric ±VOUT for bidirectional current sensing. The pin draws negligible current (nA-level) and must remain within GND–VCC+0.3 V to avoid ESD diode conduction.
Can the TSC211IQT be used for bidirectional current measurement?
Yes - by applying a mid-supply voltage (e.g., VCC/2) to the REF pin, the TSC211IQT produces a centered output (e.g., 2.5 V at zero current) that swings positive for one current direction and negative for the reverse. Its matched input structure and 105 dB CMRR maintain accuracy regardless of direction or common-mode level.
What package options are available for the TSC211IQT?
The TSC211IQT is offered exclusively in the QFN10 package (1.8 mm × 1.4 mm, 0.4 mm pitch, wettable flank), optimized for thermal performance and space-constrained PCB layouts. Unlike the SC70-6 variant used for other TSC21x members, the 'IQT' suffix denotes this QFN10 configuration with pins 2/3 (VIN+) and 4/5 (VIN−) internally bonded in parallel for improved matching.
TSC211IQT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 10-WFQFN
- 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:
- -
- -3db Bandwidth:
- 8 kHz
- Current - Input Bias:
- 28 µA
- Voltage - Input Offset:
- -
- 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:
- 10-QFN (1.8x1.4)
TSC211IQT FAQ
1.How can I place an order for TSC211IQT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSC211IQT 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 TSC211IQT reliable?
The price and inventory of TSC211IQT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC211IQT is usually 5 days.
3.What payment methods are accepted for TSC211IQT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC211IQT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSC211IQT?
TSC211IQT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSC211IQT 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 TSC211IQT?
For technical support, including TSC211IQT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC211IQT requirements.
6.How does Aetrix verify that TSC211IQT is sourced from the original manufacturer or authorized distributors?
All TSC211IQT 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 TSC211IQT meets industry standards.
7.What is the process for return or replacement of TSC211IQT?
All TSC211IQT units undergo pre-shipment inspection (PSI). If there is an issue with TSC211IQT, 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 TSC211IQT part is unused and in its original packaging.
Return procedure for TSC211IQT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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