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STMicroelectronics TSC212IYCT
- Part No.:
- TSC212IYCT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
TSC212IYCT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,900
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Product details
Overview
TSC212IYCT from STMicroelectronics is a high-precision, zero-drift current sense amplifier optimized for bidirectional or unidirectional shunt-based current measurement in high-common-mode-voltage systems. It features 1000 V/V fixed gain, ±35 µV max offset voltage (25 °C), ±1% max gain error, and operates from -0.3 V to +26 V common mode with 2.7–26 V supply - enabling accurate sensing in battery chargers, telecom power rails, and industrial motor control feedback loops.
For engineers reviewing the TSC212IYCT datasheet, TSC212IYCT pinout, TSC212IYCT application, or TSC212IYCT equivalent, key selection criteria include its 1000× gain accuracy at ±1%, 0.1 µV/°C offset drift, QFN10 (1.8 × 1.4 mm) package compatibility, and support for both high-side and low-side sensing across -40 to 125 °C.
Technical Context
The TSC212IYCT employs a proprietary zero-drift chopper-stabilized architecture with thin-film resistors to achieve <0.3 µV/°C offset drift and >105 dB CMRR over -40 to 125 °C. Its input stage draws bias current from the common-mode rail when Vicm > 2.5 V, enabling operation beyond the supply rail - critical for high-side sensing in 12 V or 24 V systems.
Output common-mode voltage is programmable via the REF pin, supporting unidirectional (GND- or VCC-referenced) and bidirectional (mid-rail referenced) configurations. The device delivers 6 kHz bandwidth and 0.05 V/µs slew rate at 12 V supply, with output swing within 5 mV of GND and 200 mV of VCC under 10 kΩ load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 1000 V/V - enables precise amplification of sub-mV shunt voltages (e.g., 1 mV → 1 V), reducing required shunt power dissipation by 10× vs. 100× gain devices. |
| Offset Voltage (25 °C) | ±35 µV max - ensures ≤35 nA equivalent current error on a 1 Ω shunt, critical for µA-level accuracy in battery monitoring. |
| Common-Mode Range | -0.3 V to +26 V - supports direct connection to high-side MOSFET drains or battery terminals without level-shifting circuitry. |
| Supply Voltage | 2.7 V to 26 V - allows single-supply operation across 3.3 V microcontrollers up to 24 V industrial bus rails. |
| Quiescent Current | 100 µA max - enables always-on current monitoring in energy-sensitive applications like portable medical devices. |
| Temperature Range | -40 °C to +125 °C - qualified for under-hood automotive, industrial PLC, and telecom rectifier environments. |
| CMRR | 105 dB min (TSC212) - rejects >300 mV of common-mode noise on a 10 mV sense signal, essential for noisy switch-mode power supplies. |
Pinout & Package
Available in QFN10 (1.8 × 1.4 mm, 0.4 mm pitch) and SC70-6 packages. This part uses the QFN10 variant, offering improved thermal performance (RthJA = 124 °C/W) and space efficiency for dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplified output voltage | Delivers gain-scaled differential voltage across shunt; rail-to-rail swing capability simplifies ADC interfacing. |
| 2,3 (VIN+) | Non-inverting input | Connected to high-potential side of shunt; accepts common-mode voltages up to +26 V independent of VCC. |
| 4,5 (VIN-) | Inverting input | Connected to low-potential side of shunt; matched input impedance ensures balanced noise rejection. |
| 6 (VCC) | Positive supply | Power source for internal circuitry; also used as reference for unidirectional output configuration. |
| 7 (NC) | No connect | Internally unused; must be left floating or tied to GND/VCC per layout best practices. |
| 8 (REF) | Reference voltage input | Programs output common-mode level: GND = unidirectional low-side, VCC = unidirectional high-side, mid-rail = bidirectional. |
| 9 (GND) | Analog ground | Return path for internal bias currents; requires low-impedance connection to system ground plane. |
| 10 (NC) | No connect | Internally unused; must be left floating or tied to GND/VCC per layout best practices. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift architecture | 0.1 µV/°C max offset drift - eliminates thermal-induced baseline shift in long-duration industrial logging applications. |
| Programmable output common-mode | REF pin sets output DC level anywhere between GND and VCC - enables seamless integration with single-ended or differential ADCs. |
| High CMRR at frequency | 105 dB min up to 10 kHz - maintains accuracy in presence of PWM switching noise from adjacent buck converters. |
| Wide supply and common-mode range | Operates from 2.7 V supply while sensing signals at -0.3 V to +26 V - eliminates need for external level shifters in 24 V systems. |
| Low quiescent current | 100 µA - supports battery-backed current monitoring with multi-year runtime in smart metering nodes. |
Applications
| Telecom Power Monitoring | Battery Charger Feedback |
|---|---|
|
Use Scenario: Real-time monitoring of +48 V DC distribution rails in telecom base stations to detect cable faults or overload conditions. IC Role / Device Role / Timing Role: High-side current sense amplifier measuring shunt voltage with 26 V common-mode tolerance and 1000× gain for µA-resolution detection. Use Value: Enables early fault detection before thermal runaway, leveraging ±35 µV offset to resolve <10 mA changes on 50 mΩ shunts. |
Use Scenario: Precision charge/discharge current regulation in Li-ion fast-charging circuits for laptops and power tools. IC Role / Device Role / Timing Role: Bidirectional current sensor with REF pin set to VCC/2, delivering symmetric ±1 V output for 10 A full-scale range. Use Value: Supports ±0.5% current accuracy across -20 to 60 °C ambient, meeting JEITA charging profile compliance requirements. |
| Industrial Motor Control | Server PSU OCP |
|
Use Scenario: Phase current sensing in 24 V BLDC motor drives for robotics and CNC equipment requiring closed-loop torque control. IC Role / Device Role / Timing Role: Low-side shunt amplifier with GND-referenced REF, providing fast-response current feedback to PWM controllers. Use Value: 6 kHz bandwidth and 0.05 V/µs slew rate ensure minimal phase lag (<1 µs) in current loop response, improving stability margins. |
Use Scenario: Over-current protection in 12 V server power supplies where rapid shutdown (<10 µs) prevents MOSFET failure during short-circuit events. IC Role / Device Role / Timing Role: High-speed current monitor with 1000× gain driving comparator input; leverages 0.1 µV/°C drift for stable trip threshold over temperature. Use Value: Delivers consistent 12 A trip point across -40 to 125 °C, eliminating recalibration in datacenter rack environments. |
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, ±10 µV offset, 120 dB CMRR, SOIC-8 package | Higher precision but lower gain; requires larger shunt for same output swing | Select when ultra-low offset dominates over gain flexibility and board space is not constrained. |
| TSC211IYCT | 500 V/V gain, identical package, same offset/gain drift specs | Half the gain reduces sensitivity to shunt parasitics but doubles required shunt value for same full-scale output | Choose for higher dynamic range in medium-current (1–5 A) applications where noise immunity outweighs resolution needs. |
Compared with TSC212IYCT, the INA240A1QDRQ1 offers superior offset performance but lacks the 1000× gain needed for ultra-low-power shunt designs, while the TSC211IYCT trades resolution for improved signal-to-noise ratio in noisy industrial settings - making TSC212IYCT optimal for high-gain, space-constrained, wide common-mode applications.
Availability
TSC212IYCT is available at Aetrix Electronics and suitable for telecom power monitoring, battery charger feedback, and industrial motor control requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSC212IYCT 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, MCU, 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 current sensing in harsh electrical environments - emphasizing zero-drift stability, wide common-mode operation, and robust thermal performance.
FAQ
What is the maximum common-mode voltage the TSC212IYCT can handle?
The TSC212IYCT supports a common-mode input voltage range of -0.3 V to +26 V, independent of its 2.7–26 V supply voltage. This allows direct high-side sensing on 24 V bus lines without external level-shifting components, and accommodates negative transients down to -0.3 V relative to ground.
Can the TSC212IYCT be used for bidirectional current sensing?
Yes - by applying a mid-supply voltage (e.g., VCC/2) to the REF pin, the output common-mode level is centered, enabling symmetric positive/negative output swings for bidirectional current flow. This configuration is commonly used in battery charge/discharge monitoring and H-bridge motor control.
How does the REF pin affect output behavior?
The REF pin sets the output DC offset: grounding it configures unidirectional low-side sensing with 0 V quiescent output; connecting it to VCC configures unidirectional high-side sensing with VCC quiescent output; applying any voltage between GND and VCC enables programmable bidirectional operation with proportional output centering.
What is the thermal resistance of the QFN10 package?
The QFN10 (1.8 × 1.4 mm) package has a typical junction-to-ambient thermal resistance (RthJA) of 124 °C/W under standard JEDEC PCB conditions. This enables reliable operation at full 100 µA quiescent current up to +125 °C ambient when mounted on a 2-layer board with adequate copper pour.
TSC212IYCT 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:
- Push-Pull
- Slew Rate:
- 0.5V/µs
- Gain Bandwidth Product:
- 6 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
TSC212IYCT FAQ
1.How can I place an order for TSC212IYCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSC212IYCT 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 TSC212IYCT reliable?
The price and inventory of TSC212IYCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC212IYCT is usually 5 days.
3.What payment methods are accepted for TSC212IYCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC212IYCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSC212IYCT?
TSC212IYCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSC212IYCT 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 TSC212IYCT?
For technical support, including TSC212IYCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC212IYCT requirements.
6.How does Aetrix verify that TSC212IYCT is sourced from the original manufacturer or authorized distributors?
All TSC212IYCT 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 TSC212IYCT meets industry standards.
7.What is the process for return or replacement of TSC212IYCT?
All TSC212IYCT units undergo pre-shipment inspection (PSI). If there is an issue with TSC212IYCT, 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 TSC212IYCT part is unused and in its original packaging.
Return procedure for TSC212IYCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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