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STMicroelectronics TSB571ILT
- Part No.:
- TSB571ILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TSB571ILT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,546
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Product details
Overview
TSB571ILT from STMicroelectronics is a single-channel, rail-to-rail input/output operational amplifier designed for high-voltage industrial and automotive signal conditioning. It operates from 4 V to 36 V, delivers 2.5 MHz gain bandwidth at 380 µA supply current, features ±1.5 mV max input offset voltage, and supports extended temperature range (−40 °C to +125 °C) - enabling use in low-side current sensing and 24 V power supply monitoring circuits.
For engineers reviewing the TSB571ILT datasheet, TSB571ILT pinout, TSB571ILT application, or TSB571ILT equivalent, this page provides verified pin functions, real-world application context for rail-to-rail operation under capacitive load, automotive-grade reliability data, and validated alternatives for low-power, high-voltage op-amp selection.
Technical Context
The TSB571ILT uses 40 V BiCMOS process technology to achieve stable unity-gain operation with up to 1 nF capacitive load while maintaining ≥45° phase margin across −40 °C to +125 °C. Its rail-to-rail input stage extends common-mode range to (VCC−) − 0.1 V and (VCC+) + 0.1 V, and its output drives ±35 mA into resistive loads at 36 V supply.
It integrates ESD protection rated to 4 kV HBM and features no phase reversal under overdrive - critical for fault-tolerant sensor interfaces. Input bias current remains ≤30 nA max across full temperature range, supporting high-impedance source applications such as precision thermistor amplification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4 V to 36 V - enables direct interface with 12 V/24 V automotive and industrial bus systems without LDO pre-regulation. |
| Gain Bandwidth Product | 2.5 MHz typ. at 36 V - supports closed-loop bandwidths >1 MHz in unity-gain buffer or active filter configurations. |
| Supply Current per Channel | 380 µA typ. at 36 V - allows battery-backed or energy-harvesting systems to sustain continuous analog signal conditioning. |
| Input Offset Voltage | ±1.5 mV max (−40 °C to +125 °C) - ensures <0.5% error in 3.3 V reference-based current sense amplifiers with 100 mΩ shunt. |
| Common-Mode Rejection Ratio | 95 dB min at 36 V - rejects noise from noisy DC-link rails in motor drive current sensing applications. |
| Slew Rate | 0.88 V/µs negative / 1.00 V/µs positive (36 V, 25 °C) - supports fast transient response in overcurrent protection comparators with hysteresis. |
| ESD Robustness | 4 kV HBM - meets ISO 10605 requirements for in-vehicle electronics without external protection diodes. |
Pinout & Package
TSB571ILT is supplied in SOT23-5 package (2.9 mm × 1.6 mm × 1.1 mm), optimized for space-constrained PCB layouts in automotive body control modules and industrial I/O terminals.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output terminal | Capable of sourcing/sinking ±35 mA at 36 V; rail-to-rail swing within 60 mV of VCC+ and 90 mV of VCC−. |
| 2 (VCC−) | Negative supply connection | Accepts ground or negative rail; required for dual-supply operation; referenced for all input common-mode and output swing specs. |
| 3 (IN+) | Non-inverting input | High-impedance node (1 TΩ); supports direct connection to high-Z sensors; no phase reversal on overdrive. |
| 4 (IN−) | Inverting input | Used for feedback or differential input; internal ESD diodes clamp to VCC+/VCC− if voltage exceeds rails by >0.2 V. |
| 5 (VCC+) | Positive supply connection | Accepts up to 40 V absolute max; supplies internal bias circuitry and output stage; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in single-supply 3.3 V–36 V systems, eliminating level-shifting components. |
| Stable with 1 nF capacitive load | Guarantees ≥45° phase margin without external compensation - simplifies design of anti-aliasing filters driving ADC inputs. |
| Automotive grade (AEC-Q100 qualified) | Qualified for Grade 1 (−40 °C to +125 °C) operation with long-term Vio drift ≤1.5 µV/√month - suitable for engine control units. |
| Low input bias current (≤30 nA) | Minimizes voltage error in high-resistance sensor interfaces (e.g., 100 kΩ thermistors), preserving measurement accuracy. |
| No phase reversal | Prevents latch-up or uncontrolled output during input overvoltage events - essential for robust front-end protection in CAN/LIN nodes. |
Applications
| Automotive Battery Monitoring | Industrial 4–20 mA Transmitter |
|---|---|
Use Scenario: Real-time monitoring of 12 V/24 V vehicle battery voltage and alternator output under load transients. IC Role / Device Role / Timing Role: Precision buffer and level translator between battery rail and SAR ADC input, operating directly from unregulated supply. Use Value: Rail-to-rail I/O and 36 V tolerance eliminate need for external voltage dividers or regulators, reducing BOM count and improving thermal stability. |
Use Scenario: Conditioning sensor signals (e.g., pressure, temperature) and driving 4–20 mA loop with programmable gain and offset. IC Role / Device Role / Timing Role: Low-drift instrumentation amplifier front-end with rail-to-rail output swing into loop driver transistor base. Use Value: ±1.5 mV Vio max and 6 µV/°C drift ensure <0.1% total error over full industrial temperature range without calibration. |
| Low-Side Current Sensing | Audio Line Driver |
Use Scenario: Measuring motor phase current in BLDC inverters using shunt resistor placed between load and ground. IC Role / Device Role / Timing Role: High-CMR difference amplifier with gain = 50, rejecting common-mode noise from PWM switching edges. Use Value: 95 dB CMRR at 36 V suppresses >30 V p-p common-mode ripple, enabling accurate current reconstruction at 20 kHz PWM frequency. |
Use Scenario: Driving balanced/unbalanced audio outputs in automotive infotainment head units with wide supply range. IC Role / Device Role / Timing Role: Unity-gain line driver with THD+N <0.001% at 1 kHz, buffering DAC output to connector. Use Value: 20 nV/√Hz input noise and 0.7 µVpp low-frequency noise preserve SNR >110 dB in high-fidelity audio paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage, low-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSB711IST | Lower supply current (90 µA typ.), lower GBP (1.5 MHz), tighter Vio (±0.5 mV max) | Better suited for ultra-low-power sensor nodes where bandwidth <500 kHz is acceptable | Select when power budget is <100 µA and precision outweighs speed requirements |
| TSB572IPT | Dual-channel version in SO8; identical per-channel specs but higher total ICC (760 µA typ.) | Reduces component count in multi-sensor systems (e.g., 3-phase motor current sensing) | Select when two matched amplifiers are needed on same die for common-mode rejection or chopper synchronization |
Compared with TSB571ILT, TSB711IST trades bandwidth and drive strength for sub-100 µA operation - ideal for always-on monitoring. TSB572IPT offers channel matching and layout efficiency at the cost of higher total quiescent power, making it preferable in compact dual-signal-path designs.
Availability
TSB571ILT is available at Aetrix Electronics and suitable for automotive battery management, industrial 4–20 mA transmitters, and low-side current sensing requiring stable component supply across extended temperature and voltage ranges.
Supply support for TSB571ILT 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 intelligent power, analog, MEMS, and microcontroller solutions for automotive, industrial, and consumer markets.
The TSB571ILT belongs to ST's high-voltage, low-power operational amplifier product line - engineered specifically for robust signal conditioning in harsh environments where supply voltage variation, temperature extremes, and EMI resilience are critical.
FAQ
What is the maximum capacitive load the TSB571ILT can drive stably?
The TSB571ILT maintains ≥45° phase margin with up to 1 nF capacitive load at 36 V supply and 25 °C ambient, as verified in DS11248 Figure 25. For loads >100 pF, a series resistor (≥10 Ω) between output and capacitance is recommended to preserve stability in production designs.
Does the TSB571ILT require external input protection when used with 24 V automotive signals?
Yes - although the device includes internal ESD diodes rated to 4 kV HBM, input pins must not exceed VCC+ or fall below VCC− by more than 0.2 V. For 24 V signals interfacing to a 5 V logic domain, a current-limiting resistor (e.g., 2.2 kΩ) is mandatory to restrict input current to <10 mA per DS11248 Section 4.2.
How does the TSB571ILT perform in single-supply vs. dual-supply configurations?
It operates identically in both modes: rail-to-rail input extends to VCC− −0.1 V and VCC+ +0.1 V, and output swings within 60 mV of either rail. In single-supply use (e.g., VCC− = GND), the input common-mode range includes ground, enabling direct interface with shunt-based current sensors referenced to system ground.
Is the TSB571ILT pin-compatible with other ST op-amps in SOT23-5?
No - the TSB571ILT pinout (OUT/VCC−/IN+/IN−/VCC+) is unique among ST's SOT23-5 op-amps. Devices like TS912IYDT use different assignments (e.g., IN−/IN+/VCC−/OUT/VCC+), so PCB layout and schematic symbols must be verified against DS11248 Figure 1 before substitution.
TSB571ILT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 2.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 8 nA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 380µA
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 4 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TSB571ILT FAQ
1.How can I place an order for TSB571ILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSB571ILT 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 TSB571ILT reliable?
The price and inventory of TSB571ILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSB571ILT is usually 5 days.
3.What payment methods are accepted for TSB571ILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSB571ILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSB571ILT?
TSB571ILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSB571ILT 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 TSB571ILT?
For technical support, including TSB571ILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSB571ILT requirements.
6.How does Aetrix verify that TSB571ILT is sourced from the original manufacturer or authorized distributors?
All TSB571ILT 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 TSB571ILT meets industry standards.
7.What is the process for return or replacement of TSB571ILT?
All TSB571ILT units undergo pre-shipment inspection (PSI). If there is an issue with TSB571ILT, 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 TSB571ILT part is unused and in its original packaging.
Return procedure for TSB571ILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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