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STMicroelectronics TSC102IYDT
- Part No.:
- TSC102IYDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSC102IYDT.pdf
- Description:
- IC CURRENT SENSE 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,002
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Product details
Overview
TSC102IYDT from STMicroelectronics is a high-side current sense amplifier with integrated signal conditioning amplifier in SO8 package, featuring 20 V/V fixed gain, ±2.3 mV input offset voltage, -40 °C to 125 °C operating range, and 420 µA max supply current - used for precision battery charge monitoring and automotive load current feedback.
For engineers reviewing the TSC102IYDT datasheet, TSC102IYDT pinout, TSC102IYDT application, or TSC102IYDT equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in DC motor control and photovoltaic systems, and confirmed alternative parts with documented functional differences.
Technical Context
The TSC102IYDT integrates two independent amplifiers: a high-side current sensing stage with 2.8–30 V common-mode input range (independent of 3.5–5.5 V VCC), and a fully accessible signal conditioning amplifier (A1/A2/A3 pins) configurable as buffer, gain stage, filter, or comparator interface. Its dual-stage architecture enables direct shunt-based current measurement without level-shifting circuitry.
It withstands harsh conditions: -16 V to 60 V input survival range (reversed battery/load dump), 4 kV HBM ESD on Vp/Vm pins, and operates with ≤420 µA total supply current across full temperature range - making it suitable for always-on automotive and industrial power monitoring where supply headroom and fault resilience are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 20 V/V fixed - provides predictable scaling of shunt voltage to ground-referenced output without external resistors |
| Input Offset Voltage | ±2.3 mV max - limits minimum resolvable current at 100 mΩ shunt to ~23 mA error floor |
| Common-Mode Range | 2.8 V to 30 V - enables high-side sensing in 12 V/24 V automotive and 28 V industrial bus systems |
| Supply Current | 420 µA max - supports low-power battery-backed monitoring with minimal system overhead |
| Operating Temp | -40 °C to 125 °C - qualified for under-hood automotive and industrial ambient environments |
| ESD Protection | 4 kV HBM on Vp/Vm - survives electrostatic discharge events during assembly and field operation |
| Output Accuracy | ±4% max over temp - ensures reliable current feedback for closed-loop motor or charger control |
Pinout & Package
SO8 plastic package (8-pin small outline), RoHS-compliant, ECOPACK®-qualified, with 1.27 mm lead pitch and surface-mount footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Vp | High-side shunt input (+) | Connects to positive side of sense resistor; withstands -16 V to 60 V transient |
| Vm | High-side shunt input (-) | Connects to negative side of sense resistor; same ruggedness as Vp |
| Gnd | Power ground reference | System ground return for VCC and output stage; separates analog and power domains |
| Vcc | Positive supply input | 3.5–5.5 V digital/analog rail; independent of Vp/Vm common-mode voltage |
| A1 | Current sense amp output | Ground-referenced output of 20× amplified Vsense; drives A2/A3 or external circuitry |
| A2 | Signal conditioning amp non-inv input | Direct access to second amplifier's +IN; used for gain adjustment or filtering |
| A3 | Signal conditioning amp inv input | Direct access to second amplifier's –IN; configurable for feedback or signal conditioning |
| Out | Final buffered output | Composite output node; internally connected to A1 when A3 = Out and A1 = A2 (buffer mode) |
Key Features
| Feature | Design Value |
|---|---|
| Independent VCM/VCC | Enables high-side sensing at 24 V bus while powered from 5 V MCU rail - eliminates level shifters |
| Rugged Input Survival | Withstands -16 V reversed battery and 60 V load-dump transients - reduces need for external TVS |
| Two-Stage Amplifier Architecture | Separate current sense and signal conditioning stages allow flexible post-processing (filtering, gain boost, overcurrent latch) |
| Low Quiescent Current | 420 µA max enables always-on current monitoring in battery-powered systems without significant drain |
| Automotive-Qualified | AEC-Q100 Grade 1 (TSC102IYDT) - certified for engine bay and powertrain applications |
Applications
| Battery Charger Monitoring | Automotive Load Current Sensing |
|---|---|
Use Scenario: Real-time current measurement in 12 V/24 V Li-ion or lead-acid battery chargers to regulate charge rate and detect end-of-charge. IC Role / Device Role / Timing Role: High-side current sense amplifier converts shunt voltage to ground-referenced analog output for MCU ADC sampling. Use Value: Enables precise Coulomb counting and thermal derating without isolation; ±4% accuracy maintains SOC estimation within 2% error over lifetime. | Use Scenario: Monitoring starter motor, HVAC blower, or lighting loads in automotive body control modules (BCMs). IC Role / Device Role / Timing Role: Fault-tolerant current sensor feeding diagnostic logic and PWM-controlled load drivers. Use Value: Survives load-dump (60 V) and reverse-battery (-16 V) events per ISO 7637-2, eliminating need for external protection components. |
| DC Motor Control Feedback | Photovoltaic System Monitoring |
Use Scenario: Closed-loop current regulation in brushed or BLDC motor drivers for industrial actuators and robotics. IC Role / Device Role / Timing Role: Provides fast, accurate phase current feedback to motor controller for torque control and stall detection. Use Value: 800 kHz bandwidth and 7 µs settling time support PWM frequencies up to 20 kHz with minimal phase lag. | Use Scenario: String-level current monitoring in solar inverters to detect partial shading, hot spots, or panel degradation. IC Role / Device Role / Timing Role: High-side current sensor interfacing with isolated ADC or microcontroller via signal conditioning amplifier. Use Value: 30 V common-mode range accommodates 24–32 V PV string voltages; low drift (±400 ppm/°C) ensures stable readings across desert or rooftop temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current sensing amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1DR | 20 V/V gain, wider CM range (–4 V to 80 V), higher quiescent current (1.8 mA), no integrated signal conditioning amp | Requires external op-amp for filtering/gain; better suited for ultra-high-voltage industrial supplies | Select when >30 V common-mode or higher accuracy (±0.1%) is required; avoid if low power (<500 µA) is mandatory |
| TSC101IYDT | Same SO8 package and pinout, but single-stage only (no A1/A2/A3), lower gain (14 V/V), no signal conditioning amplifier | Limited to basic current-to-voltage conversion; cannot implement active filtering or overcurrent latching | Select only for cost-sensitive, space-constrained designs where signal conditioning is handled externally |
Compared with INA240A1DR and TSC101IYDT, the TSC102IYDT uniquely combines automotive qualification, ultra-low quiescent current, and an integrated second amplifier - enabling compact, robust, and functionally rich current monitoring without external components.
Availability
TSC102IYDT is available at Aetrix Electronics and suitable for automotive battery management, industrial motor control, and renewable energy monitoring requiring stable component supply and long-term lifecycle support.
Supply support for TSC102IYDT 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 automotive, industrial, and consumer markets.
The TSC102 belongs to ST's precision analog current sensing product line, engineered specifically for high-reliability, high-common-mode, low-power current monitoring in automotive and industrial power systems.
FAQ
What is the maximum shunt voltage the TSC102IYDT can accurately measure?
The TSC102IYDT has a differential input voltage limit of ±20 V (absolute maximum), but its specified linear range is ±1 V for optimal accuracy. At 20 V/V gain, this corresponds to ±50 mV across the shunt resistor. Measuring beyond ±50 mV risks saturation and reduced accuracy due to output stage limitations and increased offset drift.
Can the signal conditioning amplifier be used independently of the current sense stage?
Yes - the A2 and A3 pins provide direct access to the second amplifier's inputs, and A1 is the output of the first stage. By disconnecting A1 from A2/A3 and applying external signals to A2/A3, the second amplifier operates as a standalone op-amp with rail-to-rail input (0 V to VCC) and 1 MHz GBW, usable for general-purpose signal conditioning.
Does the TSC102IYDT require external compensation capacitors?
No external compensation is required for basic operation. The internal current sense amplifier is unity-gain stable. However, when configuring the signal conditioning amplifier for gains >1 or adding RC networks (e.g., low-pass filters in Figures 25–26), external R/C components are needed - and stability must be verified per layout parasitics and load capacitance.
How does the TSC102IYDT handle reverse polarity connection?
The TSC102IYDT survives -16 V applied to Vp or Vm relative to GND (per absolute maximum ratings), making it tolerant of reverse battery connection. This is achieved via internal clamping and rugged input structures - no external diodes are needed. However, sustained reverse operation outside datasheet limits may degrade performance or cause latch-up.
TSC102IYDT 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:
- 0.4V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- 800 kHz
- Current - Input Bias:
- 5 µA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 420µA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TSC102IYDT FAQ
1.How can I place an order for TSC102IYDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSC102IYDT 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 TSC102IYDT reliable?
The price and inventory of TSC102IYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC102IYDT is usually 5 days.
3.What payment methods are accepted for TSC102IYDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC102IYDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSC102IYDT?
TSC102IYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSC102IYDT 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 TSC102IYDT?
For technical support, including TSC102IYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC102IYDT requirements.
6.How does Aetrix verify that TSC102IYDT is sourced from the original manufacturer or authorized distributors?
All TSC102IYDT 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 TSC102IYDT meets industry standards.
7.What is the process for return or replacement of TSC102IYDT?
All TSC102IYDT units undergo pre-shipment inspection (PSI). If there is an issue with TSC102IYDT, 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 TSC102IYDT part is unused and in its original packaging.
Return procedure for TSC102IYDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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