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STMicroelectronics TSC2012IDT
- Part No.:
- TSC2012IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSC2012IDT.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,013
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Product details
Overview
TSC2012IDT 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 2.7–5.5 V supply operation. It enables high-accuracy shunt-based current measurement in high-side or low-side configurations for industrial motor control and solenoid drive feedback loops.
For engineers reviewing the TSC2012IDT datasheet, TSC2012IDT pinout, TSC2012IDT application, or TSC2012IDT equivalent, this device supports precise bidirectional sensing down to 22.7 mV full-scale input (at -40°C to +125°C), delivers 330 kHz small-signal bandwidth at 5 V supply, and features active-high shutdown with 20 µA quiescent current - critical for power-sensitive embedded monitoring systems.
Technical Context
The TSC2012IDT uses a precision instrumentation amplifier topology optimized for high common-mode rejection (85–120 dB) across -20 to +70 V, enabling accurate sensing in noisy industrial bus environments. Its ratiometric reference architecture (VREF1/VREF2) allows output offset adjustment from 0 to VCC, supporting unidirectional or bidirectional current measurement modes.
It integrates internal laser-trimmed gain resistors for 100 V/V accuracy (0.3% max gain error), achieves <0.03% linearity error, and maintains stable performance over -40°C to +125°C ambient - validated by 5 µV/°C max offset drift and 25 ppm/°C gain error drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 V/V - fixed, laser-trimmed ratio enabling direct conversion of 22.7–46.9 mV shunt voltage to 2.27–4.69 V output at 5 V supply. |
| Common-Mode Range | -20 V to +70 V - supports sensing on high-side rails up to 70 V or negative-grounded systems down to -20 V without level-shifting circuitry. |
| Offset Voltage | ±200 µV max (RTI) - ensures ≤0.2% full-scale error at 22.7 mV input, critical for low-current detection in solenoid or motor phase monitoring. |
| Supply Voltage | 2.7 V to 5.5 V - compatible with standard 3.3 V and 5 V industrial logic domains while maintaining full spec compliance. |
| Bandwidth | 330 kHz (min) at 5 V - sufficient for PWM-based motor control loop sampling up to ~100 kHz switching frequencies with phase margin. |
| Shutdown Current | 20 µA max - enables ultra-low-power sleep mode during idle cycles in battery-backed or energy-harvested sensor nodes. |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive, factory-floor PLCs, and industrial inverters without derating. |
Pinout & Package
Available in SO8 and MiniSO8 packages; TSC2012IDT uses the SO8 (Small Outline Integrated Circuit, 150 mil width) package with standard 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN- | Negative input | Connects to low side of shunt resistor; referenced to common-mode voltage, not ground. |
| 2 GND | Ground | Analog ground reference for internal circuitry; must be tied to system AGND with low-impedance path. |
| 3 VREF2 | Reference voltage 2 | Second reference terminal for ratiometric offset adjustment; used with VREF1 to set output zero point. |
| 4 SHDN | Shutdown control | Active-high digital input; pulls output to high-impedance state when driven >0.7×VCC. |
| 5 OUT | Amplified output | Single-ended voltage output proportional to (IN+ − IN−) × 100; drives 10 kΩ load with <35 mV drop at 5 V. |
| 6 VCC | Positive supply | Primary power rail (2.7–5.5 V); supplies internal amplifiers and reference buffers. |
| 7 VREF1 | Reference voltage 1 | First reference terminal for ratiometric offset adjustment; used in parallel with VREF2 for 0–VCC output centering. |
| 8 IN+ | Positive input | Connects to high side of shunt resistor; common-mode voltage appears directly at this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional sensing capability | Supports both sourcing and sinking current measurement via VREF1/VREF2 biasing - eliminates need for external op-amp inversion in H-bridge applications. |
| High CMRR over frequency | ≥85 dB DC to 100 kHz - rejects noise from switching power rails and motor commutation spikes without external filtering. |
| Ratiometric reference inputs | VREF1 and VREF2 accept parallel connection to same voltage (0–VCC), enabling output centering at VREF without external DAC or resistor divider. |
| Low input bias current | ±600 µA max (IN+, IN−) - minimizes voltage error across high-value shunts (>100 mΩ) used in low-current precision applications. |
| Fast shutdown recovery | 8 µs turn-on time (VSHDN = 5 V → 0 V) - enables cycle-synchronized sensing in burst-mode power converters. |
Applications
| Motor Phase Current Monitoring | Solenoid Drive Feedback |
|---|---|
|
Use Scenario: Real-time current measurement in three-phase BLDC motor drivers using low-side shunt resistors. IC Role / Device Role / Timing Role: Bidirectional amplifier converting shunt differential voltage to single-ended output synchronized with PWM gate timing. Use Value: Enables closed-loop torque control with <0.2% full-scale error across -40°C to +125°C, supporting field-oriented control (FOC) algorithms. |
Use Scenario: Monitoring coil current during energization/de-energization cycles in industrial pneumatic solenoid valves. IC Role / Device Role / Timing Role: High-speed current amplifier capturing transient inrush and decay profiles for open-circuit and short-circuit fault detection. Use Value: 330 kHz bandwidth captures 10 µs rise/fall edges; ±200 µV offset ensures reliable 50 mA threshold detection at 50 mΩ shunt. |
| Industrial Process Controller I/O Module | Programmable Logic Controller (PLC) Analog Input |
|
Use Scenario: 4–20 mA loop-powered sensor interface with local current sensing for self-diagnostic capability. IC Role / Device Role / Timing Role: Precision shunt monitor feeding ADC input, operating from same 24 V loop supply via internal LDO or external regulator. Use Value: -20 V to +70 V common-mode range accommodates reverse-polarity protection circuits and floating sensor grounds. |
Use Scenario: High-density analog input card measuring multiple 0–10 V or 4–20 mA channels with integrated overcurrent protection. IC Role / Device Role / Timing Role: Front-end current sense element enabling per-channel fault flag generation and dynamic range optimization. Use Value: 0.3% gain error and 0.03% linearity allow 16-bit ADC utilization without calibration; SO8 footprint simplifies layout in 1U rack modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional current sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1D | 20 V/V gain only; 80 V common-mode range; 1.1 MHz bandwidth; requires external reference for bidirectional operation. | Higher bandwidth suits faster switching converters; lacks integrated dual-reference pins for seamless zero-centering. | Select when >1 MHz response is required and board space allows external reference circuitry. |
| TSC2011IDT | 60 V/V gain; identical pinout, package, and temperature range; 500 kHz bandwidth; lower Vsense min (39.3 mV). | Better suited for mid-range shunt voltages (e.g., 50–100 mΩ at 1–2 A), with improved SNR vs. TSC2012 at higher currents. | Choose for applications requiring higher output swing headroom at moderate current levels without changing PCB layout. |
Compared with INA240A1D and TSC2011IDT, the TSC2012IDT provides highest gain (100 V/V) and lowest full-scale Vsense (22.7 mV), making it optimal for ultra-low-current detection in space-constrained industrial modules where reference integration and SO8 compatibility are essential.
Availability
TSC2012IDT is available at Aetrix Electronics and suitable for motor control, solenoid actuation, and industrial process controller applications requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSC2012IDT 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 specializing in power management, analog, and microcontroller solutions for industrial, automotive, and consumer markets.
The TSC201x series belongs to ST's precision analog current sensing product line, designed specifically for high-reliability industrial current monitoring with wide common-mode tolerance and ratiometric flexibility.
FAQ
What is the minimum shunt voltage the TSC2012IDT can accurately measure?
The TSC2012IDT supports a minimum full-scale sense voltage of 22.7 mV at -40°C to +125°C with ≤0.3% gain error. At 25°C and 5 V supply, its usable range extends down to 23.9 mV, enabling accurate measurement of currents as low as 239 mA across a 100 mΩ shunt resistor.
Can the TSC2012IDT be used for high-side sensing above 48 V?
Yes - the TSC2012IDT is rated for -20 V to +70 V common-mode input voltage, verified per DS13057 Rev 8. It operates reliably at 60 V and 70 V high-side rails when supplied with 5 V, with no external level-shifting components required.
How does the dual-reference (VREF1/VREF2) architecture improve design flexibility?
VREF1 and VREF2 accept parallel connection to the same voltage (0–VCC), allowing the output to be centered at that reference. This enables true bidirectional measurement (e.g., ±100 mA) with a single-supply ADC, eliminating external op-amps or dual-rail supplies in PLC analog input stages.
Is the SO8 package RoHS-compliant and lead-free?
Yes - the TSC2012IDT in SO8 package (part number suffix "DT") is RoHS-compliant and lead-free per STMicroelectronics' environmental policy, with JEDEC-standard Pb-free finish and halogen-free molding compound.
TSC2012IDT 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TSC2012IDT FAQ
1.How can I place an order for TSC2012IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSC2012IDT 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 TSC2012IDT reliable?
The price and inventory of TSC2012IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC2012IDT is usually 5 days.
3.What payment methods are accepted for TSC2012IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC2012IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSC2012IDT?
TSC2012IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSC2012IDT 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 TSC2012IDT?
For technical support, including TSC2012IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC2012IDT requirements.
6.How does Aetrix verify that TSC2012IDT is sourced from the original manufacturer or authorized distributors?
All TSC2012IDT 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 TSC2012IDT meets industry standards.
7.What is the process for return or replacement of TSC2012IDT?
All TSC2012IDT units undergo pre-shipment inspection (PSI). If there is an issue with TSC2012IDT, 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 TSC2012IDT part is unused and in its original packaging.
Return procedure for TSC2012IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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