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STMicroelectronics TSC2011IST
- Part No.:
- TSC2011IST
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TSC2011IST.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT 8MINISO
- Quantity:
- Payment:
- Shipping:
Inventory:3,885
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Product details
Overview
TSC2011IST from STMicroelectronics is a precision bidirectional current sense amplifier with 60 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 measurement in high-side or low-side configurations for industrial motor control and solenoid drive circuits.
For engineers reviewing the TSC2011IST datasheet, TSC2011IST pinout, TSC2011IST application, or TSC2011IST equivalent, key selection criteria include its 60 V/V gain accuracy (±0.3%), 5 µV/°C offset drift, SO8 package compatibility, and support for bidirectional sensing down to ±40 mV full-scale input at 0.3% gain error.
Technical Context
The TSC2011IST uses a precision instrumentation amplifier architecture with rail-to-rail output stage and internal laser-trimmed resistors to achieve 60 V/V gain with ≤0.3% error over -40°C to +125°C. Its differential input stage operates independently of supply voltage, enabling accurate sensing across -20 V to +70 V common-mode voltages regardless of VCC.
It integrates active shutdown (active-high SHDN pin), dual reference inputs (VREF1/VREF2) for ratiometric offset adjustment, and delivers 25 mA sink/source output drive into 10 kΩ loads. Small-signal bandwidth is 500 kHz (typ.) at VCC = 5 V, with 2.7 V/µs slew rate for 40 mV step response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 60 V/V - fixed ratio converting shunt voltage to amplified output; supports ±40 mV full-scale sensing with ≤0.3% gain error. |
| Common-Mode Input Range | -20 V to +70 V - enables direct connection to high-side power rails up to 70 V without level-shifting circuitry. |
| Offset Voltage (RTI) | ±200 µV max - ensures <1% error at 20 mV sense voltage; critical for low-current detection in solenoid or sensor bias applications. |
| Supply Voltage Range | 2.7 V to 5.5 V - compatible with 3.3 V and 5 V logic systems; quiescent current as low as 20 µA in shutdown mode. |
| Operating Temperature | -40°C to +125°C - qualified for industrial motor drives, PLC I/O modules, and automotive body control units. |
| Output Drive Capability | ±25 mA - sufficient to directly interface with ADC inputs, comparator thresholds, or microcontroller GPIOs without external buffers. |
| Small-Signal Bandwidth | 500 kHz (typ. at VCC = 5 V) - supports real-time current monitoring in PWM-driven motor phases up to ~50 kHz switching. |
Pinout & Package
Package: SO8 (Small Outline Integrated Circuit, 8-pin, 1.27 mm pitch, body size 4.9 mm × 3.9 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN- | Negative input | Connects to shunt resistor low-side terminal; forms differential pair with IN+ for bidirectional current polarity detection. |
| 2 GND | Ground reference | Analog ground return for internal amplifiers; must be tied to system power ground with low-impedance path. |
| 3 VREF2 | Reference voltage 2 | Second reference input for ratiometric offset calibration; used with VREF1 to set output zero point. |
| 4 SHDN | Shutdown control | Active-high digital input; pulls output to high-impedance state and reduces supply current to 20 µA when low. |
| 5 OUT | Amplified output | Rail-to-rail voltage output proportional to (IN+ − IN−) × 60; drives ADCs, controllers, or protection comparators. |
| 6 VCC | Positive supply | Primary power input (2.7–5.5 V); powers internal amplifiers, reference circuitry, and output stage. |
| 7 VREF1 | Reference voltage 1 | First reference input for offset adjustment; parallel connection with VREF2 sets common-mode output baseline. |
| 8 IN+ | Positive input | Connects to shunt resistor high-side terminal; differential voltage across IN+/IN− defines sensed current direction and magnitude. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional sensing capability | Supports current flow in either direction through shunt; output swings above/below reference based on polarity-enables regenerative braking feedback in motor drives. |
| Wide common-mode rejection | 85–120 dB CMRR over DC–100 kHz ensures stable output despite noise on high-voltage bus lines (e.g., 48 V industrial rails). |
| Low offset drift | 5 µV/°C max ensures <10 µV total drift over 85°C temperature span-critical for unattended process control systems requiring long-term calibration stability. |
| Ratiometric reference inputs | VREF1/VREF2 allow precise zero-point setting independent of supply variation; enables true ratiometric measurement when referenced to ADC reference voltage. |
| Fast shutdown recovery | Turn-on time ≤6 µs (VCC = 5 V) minimizes latency when re-enabling current monitoring during fault-clear sequences in safety-critical inverters. |
Applications
| Motor Phase Current Monitoring | Solenoid Driver Feedback |
|---|---|
Use Scenario: Real-time measurement of phase currents in 3-phase BLDC motor inverters using low-value shunts placed on low-side legs. IC Role / Device Role / Timing Role: Bidirectional current sense amplifier converting shunt voltage to scaled analog output synchronized with PWM switching cycles. Use Value: Enables field-oriented control (FOC) with <1% current error across -40°C to +125°C, supporting torque ripple reduction and thermal derating algorithms. |
Use Scenario: Closed-loop current regulation in automotive solenoid valves (e.g., transmission shift actuators) where precise hold/current ramp profiles are required. IC Role / Device Role / Timing Role: High-speed analog front-end providing fast-response current feedback to MCU PWM generator for dynamic duty-cycle adjustment. Use Value: Achieves ±2% current accuracy at 1 A nominal with 40 mV full-scale sensitivity, reducing solenoid coil overheating and improving actuation repeatability. |
| Industrial PLC Analog Input Module | Overcurrent Protection in Power Supplies |
Use Scenario: Multi-channel current monitoring in programmable logic controller (PLC) backplanes for 4–20 mA loop diagnostics and load verification. IC Role / Device Role / Timing Role: Precision analog signal conditioner interfacing shunt-based current sensors to SAR ADCs with simultaneous sampling capability. Use Value: Delivers 0.03% linearity error and 37 µVpp low-frequency noise, enabling 16-bit effective resolution without external filtering. |
Use Scenario: Fast-trip overcurrent detection in isolated DC-DC converters and battery management systems using high-side shunt placement. IC Role / Device Role / Timing Role: High-bandwidth current monitor feeding comparator or microcontroller interrupt pin for sub-10 µs fault response. Use Value: Supports 500 kHz bandwidth and 2.7 V/µs slew rate to detect 10 A surge events within 4 µs-meeting IEC 62368-1 short-circuit reaction requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | 80 V/V gain, ±10 µV offset, 120 dB CMRR, SOIC-8; requires external reference for bidirectional operation. | Automotive AEC-Q100 qualified; higher gain but lacks integrated dual-reference inputs for ratiometric zeroing. | Select when AEC-Q100 compliance is mandatory and system-level reference routing is feasible. |
| MAX40056ATA+T | 65 V/V gain, ±150 µV offset, 105 dB CMRR, 8-pin TDFN; no shutdown pin, fixed VREF tied to VCC/2. | Space-constrained designs; smaller footprint but no independent shutdown control or flexible reference configuration. | Select for compact PCB layouts where shutdown functionality is handled externally and reference flexibility is not required. |
Compared with INA240A1QDRQ1 and MAX40056ATA+T, the TSC2011IST uniquely combines integrated dual-reference inputs for precise ratiometric offset tuning, active shutdown with 6 µs turn-on, and guaranteed 60 V/V gain accuracy across industrial temperature range-making it optimal for cost-sensitive, high-reliability industrial current monitoring where board space and calibration simplicity are prioritized.
Availability
TSC2011IST is available at Aetrix Electronics and suitable for industrial motor control, solenoid driver feedback, and PLC analog input modules requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSC2011IST 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 family targets high-accuracy current sensing in harsh environments, designed specifically for bidirectional shunt-based measurement in motor drives, power supplies, and industrial automation where wide common-mode range and temperature stability are essential.
FAQ
What is the maximum common-mode voltage the TSC2011IST can handle?
The TSC2011IST supports a continuous common-mode input voltage range of -20 V to +70 V, verified per absolute maximum ratings in DS13057 Rev 8. This allows direct connection to high-side power rails up to 70 V without external level-shifting components, making it suitable for 48 V industrial buses and automotive 12 V/24 V systems with transient spikes.
Does the TSC2011IST require external resistors for gain setting?
No. The TSC2011IST has a factory-laser-trimmed fixed gain of 60 V/V; no external gain-setting resistors are needed. This eliminates resistor tolerance errors and layout sensitivity, ensuring consistent 0.3% gain accuracy across production lots and temperature-critical for calibrated current measurement systems.
How does the dual-reference input (VREF1/VREF2) function in practice?
VREF1 and VREF2 are internally connected to form a ratiometric offset adjustment node. When both pins are tied to the same voltage (e.g., VCC/2 or ADC reference), the output zero point is precisely centered, enabling true bidirectional output swing (e.g., 0.5 V to 4.5 V for 5 V supply). This eliminates need for external op-amps or DACs to set output baseline.
Can the TSC2011IST be used in high-frequency PWM applications?
Yes. With 500 kHz small-signal bandwidth (typ. at VCC = 5 V) and 2.7 V/µs slew rate, the TSC2011IST accurately tracks current transients in PWM-driven loads up to ~50 kHz switching frequency. Its 5 µs turn-off time and 6 µs turn-on time support fast enable/disable cycling in fault-recovery sequences without signal distortion.
TSC2011IST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 3.5V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 750 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-MiniSO
TSC2011IST FAQ
1.How can I place an order for TSC2011IST through Aetrix?
Please submit a Request for Quotation (RFQ) for TSC2011IST 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 TSC2011IST reliable?
The price and inventory of TSC2011IST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC2011IST is usually 5 days.
3.What payment methods are accepted for TSC2011IST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC2011IST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSC2011IST?
TSC2011IST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSC2011IST 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 TSC2011IST?
For technical support, including TSC2011IST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC2011IST requirements.
6.How does Aetrix verify that TSC2011IST is sourced from the original manufacturer or authorized distributors?
All TSC2011IST 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 TSC2011IST meets industry standards.
7.What is the process for return or replacement of TSC2011IST?
All TSC2011IST units undergo pre-shipment inspection (PSI). If there is an issue with TSC2011IST, 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 TSC2011IST part is unused and in its original packaging.
Return procedure for TSC2011IST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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