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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics TSC1031IDT

Name: TSC1031IDT
Brand: STMicroelectronics
SKU: TSC1031IDT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TSC1031IDT

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: TSC1031IDT.pdf

Description:: IC CURRENT SENSE 1 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:1,850

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Product details

Overview

TSC1031IDT from STMicroelectronics is a high-voltage, high-side current sense amplifier with independent supply and input common-mode voltage domains, 50 V/V or 100 V/V pin-selectable gain, ±500 µV max input offset voltage at 25°C, and 90–105 dB DC common-mode rejection ratio, used for precision current monitoring in automotive battery management and photovoltaic string monitoring.

For engineers reviewing the TSC1031IDT datasheet, TSC1031IDT pinout, TSC1031IDT application, or TSC1031IDT equivalent, this page delivers verified electrical specifications, dual-supply configuration support (−2.1 V to 65 V common-mode), EMI-hardened architecture, thermal performance data (120 °C/W TSSOP8 R_thJA), and real-world use-case implementation guidance.

Technical Context

The TSC1031 operates as a current-sense amplifier using a patented current-multiplier topology: differential input voltage (V_p−V_m) drives a precision current mirror (K2 = 2.5 or 5) scaled by internal resistor ratio (K1 = R_g3/R_g1 = 10), yielding total gain Av = 2·K1·K2 = 50 or 100 V/V. Its input stage features virtually zero input bias current (10–15 µA typ) and <1 µA leakage at V_CC = 0 V.

It supports both single-supply (V_cc− = GND) and dual-supply (V_cc− < 0 V) operation, enabling common-mode range shifting: −2.1 V to 65 V with V_cc+ = 5 V / V_cc− = −5 V. Output is buffered, rail-to-rail capable, with ±1.5 mV/mA load regulation and 0.4–0.6 V/µs slew rate.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain	50 V/V or 100 V/V - selectable via SEL pin logic level; defines full-scale output span for shunt-based current sensing.
Common-mode range (single-supply)	2.9 V to 70 V - enables direct high-side sensing in 12 V/24 V/48 V automotive and industrial bus systems without level-shifting.
Supply voltage	2.7 V to 5.5 V - compatible with standard 3.3 V or 5 V microcontroller ADC reference rails.
Input offset voltage	±500 µV max at 25°C - ensures ≤±1% error at 50 mV sense voltage, critical for low-current precision applications.
Quiescent current	360 µA max - minimizes system power budget impact in always-on battery monitoring circuits.
CMRR	90–105 dB - rejects noise from high-dv/dt switching nodes (e.g., motor drive half-bridges, PV inverters).
Output accuracy	±2.5% max at Vsense = 50 mV - includes gain error, offset drift, and nonlinearity; validated across −40°C to +125°C.

Pinout & Package

TSC1031IDT is housed in an 8-pin TSSOP package (3.0 mm × 4.4 mm, 0.65 mm pitch), optimized for thermal dissipation (R_thJA = 120 °C/W) and PCB space-constrained automotive modules.

Pin/Terminal	Circuit Role	Design Meaning
Out	Analog output	Buffered, ground-referenced voltage proportional to (V_p−V_m)×Av; drives ADC or comparator directly.
Gnd	Power supply reference	System ground return for V_cc+, SEL, A1, and output stage; must be low-impedance for stability.
V_cc+	Positive supply	2.7–5.5 V supply input; powers internal amplifier and buffer; independent of input common-mode domain.
V_cc−	Negative supply	Connect to GND (single-supply) or negative rail (dual-supply); sets lower bound of common-mode range.
V_p	High-side sense input (+)	Connects to shunt resistor's high-potential side; withstands up to 75 V relative to V_cc−.
V_m	High-side sense input (−)	Connects to shunt resistor's low-potential side; same survival rating as V_p; forms differential pair.
SEL	Digital gain select	Logic-low (GND) → 50 V/V; logic-high (V_cc+) → 100 V/V; 400 nA max leakage preserves low-power integrity.
A1	Internal node access	Connection to output resistor network; not user-connected; internal to gain-setting current multiplier.

Key Features

Feature	Design Value
EMI-hardened input architecture	Integrated R_f1/R_f2/C_f filter interface enables robust operation in noisy motor control or DC-DC converter environments.
Reversed-battery survivability	Withstands −16 V common-mode input - protects against automotive load-dump and reverse-polarity connection events.
Zero-drift–optimized topology	Input offset drift ≤±20 µV/°C - maintains accuracy over wide temperature ranges without external calibration.
Low-input-leakage design	1 µA max input leakage at V_CC = 0 V - prevents erroneous current readings during system standby or sleep modes.
Fast settling response	6 µs (1%) for 50 V/V gain - supports real-time current feedback in closed-loop motor control loops.

Applications

Automotive Battery Monitoring

Photovoltaic String Monitoring

Use Scenario: Real-time measurement of battery charge/discharge current in 12 V/48 V EV auxiliary systems under engine cranking transients.

IC Role / Device Role / Timing Role: High-side current sense amplifier translating shunt voltage to ground-referenced analog output for MCU ADC sampling.

Use Value: Survives −16 V to 75 V common-mode excursions during cold-cranking and load-dump, ensuring uninterrupted telemetry.

Use Scenario: Monitoring per-string current in multi-string solar arrays to detect partial shading or module failure.

IC Role / Device Role / Timing Role: Precision current sensor interfacing with isolated ADCs to report string-level health metrics.

Use Value: 90 dB CMRR rejects coupled noise from adjacent high-voltage DC strings and nearby inverters.

Industrial DC Motor Control

Uninterruptible Power Supply (UPS)

Use Scenario: Closed-loop current feedback in H-bridge-driven BLDC motors for torque regulation and overcurrent protection.

IC Role / Device Role / Timing Role: High-bandwidth current amplifier feeding fast-response PWM controllers with 6 µs settling time.

Use Value: 0.4 V/µs slew rate and 700 kHz bandwidth enable accurate current waveform capture at 20 kHz switching frequencies.

Use Scenario: Input/output current sensing in online double-conversion UPS units to manage battery charging and inverter loading.

IC Role / Device Role / Timing Role: Dual-channel high-side monitor (using two TSC1031IDT devices) for bidirectional energy flow analysis.

Use Value: Pin-selectable gain allows unified hardware design for both 50 mV (high-current) and 100 mV (low-current) shunt configurations.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side current sense amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
INA240A1QDRQ1	Fixed 20 V/V gain; higher 120 dB CMRR; 2.7–5.5 V supply; 1.1 mA I_CC	Requires external gain staging for 50/100 V/V scaling; better noise immunity but higher quiescent draw.	Select when ultra-high CMRR (>110 dB) is mandatory and 360 µA budget is not constrained.
MAX4080FASA+	Fixed 50 V/V gain; 80 V common-mode; 2.7–76 V supply; 100 µA I_CC	Lacks dual-supply mode and reversed-battery rating (−16 V); smaller 80 V max common-mode.	Select for ultra-low-power (<150 µA) applications where −16 V survivability is not required.

Compared with INA240A1QDRQ1 and MAX4080FASA+, the TSC1031IDT uniquely balances pin-selectable gain, −16 V to 75 V common-mode survivability, and sub-400 µA quiescent current-making it optimal for automotive-grade, thermally constrained, and dual-supply-flexible designs.

Availability

TSC1031IDT is available at Aetrix Electronics and suitable for automotive battery monitoring, photovoltaic string monitoring, industrial DC motor control, and uninterruptible power supply applications requiring stable component supply across extended temperature and voltage stress conditions.

Supply support for TSC1031IDT 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, delivering silicon solutions for automotive, industrial, and power management markets since 1987.

The TSC1031 belongs to ST's high-voltage precision analog portfolio, engineered specifically for ruggedized current sensing in harsh environments-including automotive subsystems, renewable energy inverters, and industrial motor drives.

FAQ

What is the maximum common-mode voltage the TSC1031IDT can survive during reverse-battery conditions?

The TSC1031IDT survives −16 V to +75 V common-mode voltage on V_p and V_m pins relative to V_cc−, meeting ISO 16750-2 automotive reversed-battery test requirements. This rating applies regardless of supply configuration and ensures operational integrity during jump-start misconnections or battery terminal reversal.

Can the TSC1031IDT operate with a negative V_cc− supply, and what is the minimum V_cc− allowed?

Yes - in dual-supply mode, V_cc− may be set to −8 V (at V_cc+ = 5.5 V) or −11 V (at V_cc+ = 3 V), enabling common-mode range extension down to −2.1 V. The absolute maximum V_cc+−V_cc− is 15 V; exceeding this risks permanent damage per absolute maximum ratings.

How does the SEL pin affect gain, and what logic levels are valid?

SEL = GND selects 50 V/V gain; SEL = V_cc+ selects 100 V/V gain. Valid logic-low is ≤0.5 V; valid logic-high is ≥1.2 V (with V_cc+ between 2.7–5.5 V). Input leakage is ≤400 nA, allowing direct MCU GPIO control without pull-up/down resistors in most cases.

Is external filtering required for EMI suppression, and what is the recommended approach?

Yes - the TSC1031IDT's dedicated input structure supports integrated RC filtering: R_f1 and R_f2 (typically 10–100 Ω) in series with C_f (1–10 nF) placed directly at V_p/V_m pins. ST application note AN4304 provides validated layouts and component values for 10–100 MHz noise attenuation in motor drive and DC-DC converter applications.

TSC1031IDT 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:: 0.6V/µs

Gain Bandwidth Product:: -

-3db Bandwidth:: 700 kHz

Current - Input Bias:: 10 µA

Voltage - Input Offset:: 500 µV

Current - Supply:: 200µA

Current - Output / Channel:: 26 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 5.5 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

TSC1031IDT FAQ

1.How can I place an order for TSC1031IDT through Aetrix?

Please submit a Request for Quotation (RFQ) for TSC1031IDT 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 TSC1031IDT reliable?

The price and inventory of TSC1031IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC1031IDT is usually 5 days.

3.What payment methods are accepted for TSC1031IDT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC1031IDT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TSC1031IDT?

TSC1031IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TSC1031IDT 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 TSC1031IDT?

For technical support, including TSC1031IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC1031IDT requirements.

6.How does Aetrix verify that TSC1031IDT is sourced from the original manufacturer or authorized distributors?

All TSC1031IDT 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 TSC1031IDT meets industry standards.

7.What is the process for return or replacement of TSC1031IDT?

All TSC1031IDT units undergo pre-shipment inspection (PSI). If there is an issue with TSC1031IDT, 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 TSC1031IDT part is unused and in its original packaging.

Return procedure for TSC1031IDT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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