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STMicroelectronics TSV991ILT
- Part No.:
- TSV991ILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TSV991ILT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:34,737
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Product details
Overview
TSV991ILT from STMicroelectronics is a single, rail-to-rail input/output operational amplifier optimized for low-voltage, low-power applications. It delivers 20 MHz gain-bandwidth at ≥4 or ≤−3 minimum stable gain, 820 µA typical supply current, 1.5 mV max input offset voltage (A grade), and 35 mA output drive across 2.5 V to 5.5 V supply - enabling precision signal conditioning in battery-powered medical sensors.
For engineers reviewing the TSV991ILT datasheet, TSV991ILT pinout, TSV991ILT application, or TSV991ILT equivalent, key selection considerations include its non-unity-gain-stable architecture (min gain ±3/4), ultra-low 1 pA input bias current, rail-to-rail swing capability, and SOT23-5 package suitability for space-constrained portable instrumentation.
Technical Context
The TSV991ILT employs a high-speed, low-power CMOS input stage with rail-to-rail common-mode input range (VCC− −0.1 V to VCC+ +0.1 V) and output swing within 15 mV of rails (RL = 10 kΩ). Its 20 MHz GBP is specified at 100 pF capacitive load and requires gain ≥4 (non-inverting) or ≤−3 (inverting) for ≥45° phase margin stability.
It features 21 nV/√Hz input voltage noise at 10 kHz, 0.0014% THD+N at 1 kHz (4.4 Vpp), and 82 dB CMRR at 5 V supply - supporting high-fidelity analog front-ends where DC accuracy, dynamic range, and low quiescent power are jointly critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 20 MHz - enables closed-loop bandwidth up to ~5 MHz at gain = 4, suitable for active filtering up to audio frequencies |
| Input offset voltage (max) | 1.5 mV (A grade) - supports ≤0.3% error in 500 mV full-scale sensor interfaces without trimming |
| Supply current (typ) | 820 µA - allows >1-year operation on a 200 mAh coin cell in duty-cycled portable devices |
| Input bias current (typ) | 1 pA - minimizes voltage error across high-impedance sources (e.g., pH electrodes, photodiode transimpedance) |
| Output drive (min) | 32 mA sink/source - drives 600 Ω loads directly, eliminating need for external buffers in DAC output stages |
| Common-mode rejection | 75 dB min (25 °C) - rejects >99.7% of 100 mV common-mode interference in noisy industrial environments |
| Slew rate | 10 V/µs - supports 1 Vpp signals up to ~1.6 MHz without distortion, sufficient for pulse amplification |
Pinout & Package
SOT23-5 package: 2.9 mm × 2.8 mm × 1.3 mm body, 5-pin surface-mount, moisture sensitivity level 1 per JEDEC J-STD-020-C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting input | High-impedance node accepting feedback network; 1 pA bias current minimizes resistor-induced offset |
| 2 (IN+) | Non-inverting input | Rail-to-rail common-mode range (−0.1 V to VCC+ +0.1 V) enables direct connection to resistive sensor dividers |
| 3 (VCC−) | Negative supply | Ground reference for single-supply operation; exposed pad (if present) may be tied to VCC− or left floating |
| 4 (OUT) | Amplifier output | Capable of sourcing/sinking 32 mA while maintaining rail-to-rail swing - drives ADC inputs or LED drivers directly |
| 5 (VCC+) | Positive supply | Operates from 2.5 V to 5.5 V; decoupling capacitor required within 2 mm for stability per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in 3.3 V systems - output swings to within 15 mV of rails at 10 kΩ load |
| Low input offset drift | 2 µV/°C - limits temperature-induced error to <0.25 mV over −40 °C to 125 °C industrial range |
| ESD robustness | 5 kV HBM - survives handling and board-level ESD events without protection diodes in most designs |
| Stability assurance | Guaranteed stable at gains ≥4 or ≤−3 - eliminates need for external compensation in standard gain configurations |
| Low-noise performance | 21 nV/√Hz at 10 kHz - preserves SNR in microphone preamps and biopotential amplifiers |
Applications
| Portable ECG Monitor | Battery-Powered Gas Sensor |
|---|---|
Use Scenario: Amplifying microvolt-level differential cardiac signals in handheld ECG units powered by CR2032 cells. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier in first-stage instrumentation chain, providing gain and filtering before 12-bit ADC sampling. Use Value: 1 pA input bias avoids loading high-impedance electrode interfaces; 820 µA quiescent current extends battery life beyond 100 hours per charge. | Use Scenario: Conditioning output of electrochemical gas sensors requiring low-drift, low-noise amplification in wearable air-quality monitors. IC Role / Device Role / Timing Role: Transimpedance amplifier converting nanoamp-level sensor current into stable voltage for MCU ADC acquisition. Use Value: 1.5 mV max Vos ensures <0.3% full-scale error at 500 mV span; rail-to-rail output matches 3.3 V ADC reference without level-shifting. |
| Automotive Cabin Temperature Sensor | Industrial Pressure Transmitter |
Use Scenario: Signal conditioning for NTC thermistor networks in automotive HVAC control modules operating across −40 °C to 125 °C. IC Role / Device Role / Timing Role: Precision buffer and gain stage interfacing thermistor divider to automotive-grade 10-bit SAR ADC. Use Value: AEC-Q100 qualified variant (TSV991IYLT) available; 2 µV/°C drift maintains ±0.5 °C accuracy over full temperature range. | Use Scenario: Amplifying millivolt outputs from strain-gauge bridges in 4–20 mA loop-powered pressure transmitters. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front-end with programmable gain via external resistors. Use Value: 75 dB CMRR rejects common-mode noise from 24 V loop supply; 35 mA output drives 2.5 kΩ load of current-sense resistor directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV911ILT | 8 MHz GBP, unity-gain stable, 550 µA ICC, 1.5 mV Vos (A grade) | Lower bandwidth suits DC/low-frequency sensor buffering only; no minimum-gain constraint simplifies design | Select when unity-gain stability is mandatory and 20 MHz bandwidth is unnecessary |
| TSV771ILT | 20 MHz GBP, unity-gain stable, 1.1 mA ICC, 250 µV Vos (typ) | Higher precision and stability ease use in follower configurations but increase power by 34% | Select when sub-millivolt offset and unity-gain operation outweigh 280 µA extra current draw |
Compared with TSV911ILT, the TSV991ILT trades unity-gain stability for higher bandwidth and lower power; versus TSV771ILT, it sacrifices offset voltage and stability flexibility to achieve 25% lower supply current - making it optimal for gain-configured, battery-sensitive signal chains.
Availability
TSV991ILT is available at Aetrix Electronics and suitable for battery-powered medical devices, portable instrumentation, and automotive cabin sensing requiring stable component supply across extended temperature ranges (−40 °C to 125 °C).
Supply support for TSV991ILT 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 microcontrollers, power ICs, analog components, and MEMS sensors for industrial, automotive, and consumer markets.
The TSV99x family targets precision, low-power analog signal conditioning - specifically engineered for sensor interfaces, portable equipment, and active filtering where rail-to-rail operation, speed/power trade-off, and wide supply range are essential.
FAQ
Is the TSV991ILT unity-gain stable?
No. The TSV991ILT is not unity-gain stable and requires a minimum closed-loop gain of +4 (non-inverting) or −3 (inverting) for stable operation with ≥45° phase margin. Using it as a voltage follower without external compensation (e.g., series output resistor or feedback capacitor) risks oscillation, especially with capacitive loads.
What is the maximum capacitive load the TSV991ILT can drive reliably?
The TSV991ILT is characterized for stability with up to 100 pF capacitive load when configured at gain ≥4 or ≤−3. Driving larger capacitive loads (e.g., >200 pF) requires external compensation - such as a small series resistor (10–100 Ω) at the output or a feedback capacitor - and bench validation per Section 5.1 of the datasheet.
Does the SOT23-5 package of TSV991ILT include an exposed thermal pad?
No. The SOT23-5 package used for TSV991ILT does not feature an exposed thermal pad. Thermal dissipation relies on PCB copper area connected to pins 3 (VCC−) and 5 (VCC+); RθJA is 250 °C/W per datasheet Table 1, so power dissipation should remain below 200 mW for safe operation at 125 °C ambient.
How does the TSV991ILT's input bias current compare to bipolar-input op-amps?
At 1 pA typical (25 °C), the TSV991ILT's CMOS input bias current is over 10⁶× lower than typical bipolar-input op-amps (e.g., LM358: ~45 nA). This enables accurate amplification of signals from ultra-high-impedance sources like piezoelectric sensors or glass pH electrodes without significant voltage error from input current flow.
TSV991ILT 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:
- 10V/µs
- Gain Bandwidth Product:
- 20 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 820µA
- Current - Output / Channel:
- 35 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TSV991ILT FAQ
1.How can I place an order for TSV991ILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV991ILT 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 TSV991ILT reliable?
The price and inventory of TSV991ILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV991ILT is usually 5 days.
3.What payment methods are accepted for TSV991ILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV991ILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV991ILT?
TSV991ILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV991ILT 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 TSV991ILT?
For technical support, including TSV991ILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV991ILT requirements.
6.How does Aetrix verify that TSV991ILT is sourced from the original manufacturer or authorized distributors?
All TSV991ILT 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 TSV991ILT meets industry standards.
7.What is the process for return or replacement of TSV991ILT?
All TSV991ILT units undergo pre-shipment inspection (PSI). If there is an issue with TSV991ILT, 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 TSV991ILT part is unused and in its original packaging.
Return procedure for TSV991ILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSV991ILT Tags
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