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STMicroelectronics TSV991AILT
- Part No.:
- TSV991AILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TSV991AILT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:41,774
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Product details
Overview
TSV991AILT from STMicroelectronics is a precision rail-to-rail input/output operational amplifier optimized for low-voltage, low-power applications. It delivers 20 MHz gain-bandwidth at 4 V/V minimum stable gain, 1.5 mV max input offset voltage (A grade), 820 µA typical supply current, and ±35 mA output drive across 2.5–5.5 V supply - enabling high-accuracy signal conditioning in battery-powered medical sensors and portable instrumentation.
For engineers reviewing the TSV991AILT datasheet, TSV991AILT pinout, TSV991AILT application, or TSV991AILT equivalent, key selection considerations include its non-unity-gain-stable architecture (min gain +4 or –3), ultra-low 1 pA input bias current, 21 nV/√Hz input noise at 10 kHz, and operation over –40 °C to +125 °C industrial temperature range.
Technical Context
The TSV991AILT employs a proprietary high-speed, low-power CMOS input stage delivering rail-to-rail common-mode input range (VCC– –0.1 V to VCC+ +0.1 V) and rail-to-rail output swing within 15 mV of rails (RL = 10 kΩ). Its internal compensation ensures stability only at gains ≥ +4 or ≤ –3, requiring external phase compensation for unity-gain buffer configurations.
It features 75 dB typical CMRR and 86 dB typical PSRR at 5 V supply, with 10 V/μs slew rate and 0.0014% THD+N at 1 kHz (4.4 Vpp output), making it suitable for precision DC-coupled amplification and moderate-bandwidth AC signal paths where power efficiency and input impedance are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 20 MHz - supports closed-loop bandwidth up to ~5 MHz at gain = 4, enabling active filtering up to audio frequencies. |
| Input offset voltage (max) | 1.5 mV - ensures ≤ 15 mV error in 10× gain stages, critical for sensor front-end accuracy. |
| Supply current (typ) | 820 µA - enables >10-year battery life in coin-cell-powered devices operating at 3.3 V. |
| Output current (min) | ±16 mA - drives 600 Ω loads fully rail-to-rail without clipping, supporting direct interface to ADC references or analog switches. |
| Input bias current (typ) | 1 pA - minimizes voltage error across high-impedance sources (e.g., pH electrodes, photodiode transimpedance feedback). |
| Common-mode input range | VCC– –0.1 V to VCC+ +0.1 V - accepts signals beyond supply rails by 100 mV, simplifying level-shifting in single-supply systems. |
| Operating temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial control environments. |
Pinout & Package
TSV991AILT is supplied in SOT23-5 package (3.0 × 2.8 × 1.3 mm), with exposed pad electrically unconnected and recommended for thermal relief only. Pin 1 is marked with dot; device orientation follows JEDEC MO-178 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN–) | Inverting input | High-impedance node for feedback network connection; 1 pA bias current minimizes resistor-induced offset. |
| 2 (IN+) | Non-inverting input | Rail-to-rail common-mode range allows direct connection to sensors referenced to ground or VCC/2. |
| 3 (VCC–) | Negative supply | Ground reference for single-supply operation; decoupling capacitor must be placed <1 mm away. |
| 4 (OUT) | Amplifier output | Capable of sourcing/sinking ±32 mA; output swing within 15 mV of rails ensures full dynamic range utilization. |
| 5 (VCC+) | Positive supply | Accepts 2.5–5.5 V; internal ESD protection ≥5 kV HBM prevents latch-up during board handling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full-scale signal swing in 3.3 V systems without level-shifting circuitry. |
| 20 MHz GBP at 820 µA | Delivers 5× higher bandwidth per µA than legacy micropower op-amps (e.g., MCP6001), reducing system latency. |
| A-grade offset (1.5 mV max) | Eliminates need for external trimming in factory-calibrated medical sensor modules. |
| Stable at gain ≥4 or ≤–3 | Permits high-precision non-inverting amplifiers and inverting filters without added compensation components. |
| 1 pA input bias current | Supports >10 GΩ source impedances in electrochemical sensing without significant DC error. |
Applications
| Portable ECG Front-End | Battery-Powered Gas Sensor Interface |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in handheld ECG monitors. IC Role / Device Role / Timing Role: Primary gain stage with DC-coupled input, configured as non-inverting amplifier (gain = 100) to preserve low-frequency fidelity. Use Value: 1.5 mV max offset ensures baseline drift <150 µV after gain; 1 pA bias current prevents electrode polarization errors. |
Use Scenario: Conditioning output of metal-oxide semiconductor (MOS) gas sensors operating at 3.3 V with high output impedance. IC Role / Device Role / Timing Role: Transimpedance amplifier converting nanoamp-level sensor current to voltage, powered directly from Li-ion cell. Use Value: Rail-to-rail input accepts sensor voltage down to 0 V; 820 µA quiescent current extends battery life to >2 years in intermittent-read mode. |
| Automotive Cabin Temperature Sensor | Industrial 4–20 mA Loop Receiver |
Use Scenario: Signal conditioning for NTC thermistors in vehicle HVAC control units, operating across –40 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Precision voltage follower buffering thermistor divider output before ADC sampling. Use Value: Guaranteed operation at 125 °C junction temperature; 75 dB CMRR rejects engine compartment noise coupled onto sensor lines. |
Use Scenario: Converting 4–20 mA loop current to 0–5 V for PLC analog inputs in factory automation systems. IC Role / Device Role / Timing Role: Low-drift current-to-voltage converter with 250 Ω sense resistor, powered from isolated 5 V rail. Use Value: 2 μV/°C offset drift maintains <0.1% full-scale error over industrial temperature range; ±35 mA output drives long traces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TSV911ILT | 8 MHz GBP, unity-gain stable, 550 µA ICC, 1.8 mV Vio (max) | Better for unity-gain buffers and lower-bandwidth sensor interfaces where stability simplifies layout. | Select when gain ≤ 1 is required and 20 MHz bandwidth is unnecessary. |
| MCP6001T-E/OT | 1 MHz GBP, rail-to-rail I/O, 100 nA Iib, 100 µA ICC, 3 mV Vio (max) | Ultra-low power for always-on wake-up circuits, but insufficient bandwidth for active filtering above 100 kHz. | Select for sub-100 µA systems where speed is secondary to energy harvesting constraints. |
Compared with TSV911ILT, the TSV991AILT trades unity-gain stability for 2.5× higher bandwidth and lower offset; versus MCP6001T-E/OT, it delivers 20× more bandwidth and 1000× lower input bias current at 8× higher quiescent current - favoring precision over minimal power.
Availability
TSV991AILT is available at Aetrix Electronics and suitable for battery-powered medical devices, automotive cabin sensors, portable instrumentation, and industrial 4–20 mA receivers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TSV991AILT 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, mixed-signal, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The TSV99x family was developed specifically for high-accuracy, low-voltage signal conditioning in space-constrained, battery-operated systems - emphasizing rail-to-rail performance, ultra-low input bias, and robust thermal behavior from –40 °C to +125 °C.
FAQ
Can TSV991AILT be used as a unity-gain buffer?
No - the TSV991AILT is not unity-gain stable and requires minimum closed-loop gain of +4 (non-inverting) or –3 (inverting) for phase margin ≥45°. To implement a buffer, add a 10–47 Ω series resistor between output and load, or use the unity-gain-stable TSV911ILT instead. Stability must be verified via bench measurement with actual capacitive load.
What is the maximum capacitive load the TSV991AILT can drive?
The TSV991AILT can reliably drive ≤100 pF capacitive load when configured at gain ≥4 with 2 kΩ feedback resistor. For larger loads (e.g., ADC input capacitance), add a 10–50 Ω isolation resistor in series with the output, or use a feedback capacitor (e.g., 2–10 pF) across the feedback resistor in inverting configurations to suppress peaking.
Does the exposed pad on the SOT23-5 package require PCB connection?
No - the exposed pad on the TSV991AILT's SOT23-5 package is not internally connected and may be left floating or tied to VCC– for improved thermal dissipation. It must not be connected to any other net, as no internal bond wire links it to die substrate or power planes.
How does the A-grade (TSV991AILT) differ from standard TSV991ILT?
The "A" suffix denotes tighter input offset voltage specification: 1.5 mV max (vs. 4.5 mV max for standard grade) at 25 °C, with 3 mV max over full –40 °C to +125 °C range. This enables higher DC accuracy in precision measurement chains without calibration, at identical bandwidth, power, and temperature rating.
TSV991AILT 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:
- -
- 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
TSV991AILT FAQ
1.How can I place an order for TSV991AILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV991AILT 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 TSV991AILT reliable?
The price and inventory of TSV991AILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV991AILT is usually 5 days.
3.What payment methods are accepted for TSV991AILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV991AILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV991AILT?
TSV991AILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV991AILT 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 TSV991AILT?
For technical support, including TSV991AILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV991AILT requirements.
6.How does Aetrix verify that TSV991AILT is sourced from the original manufacturer or authorized distributors?
All TSV991AILT 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 TSV991AILT meets industry standards.
7.What is the process for return or replacement of TSV991AILT?
All TSV991AILT units undergo pre-shipment inspection (PSI). If there is an issue with TSV991AILT, 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 TSV991AILT part is unused and in its original packaging.
Return procedure for TSV991AILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSV991AILT Tags
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LM358DT
STMicroelectronics
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LM358DR
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LM2904DR
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LM358ADR
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LM2904DGKR
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MCP6006T-E/OT
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MCP6006UT-E/OT
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LM2902PWR
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LM2902DR
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LM358P
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