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STMicroelectronics TSV991AIQ2T
- Part No.:
- TSV991AIQ2T
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
TSV991AIQ2T.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,772
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Product details
Overview
TSV991AIQ2T from STMicroelectronics is a precision rail-to-rail input/output operational amplifier in DFN8 2×2 package, designed for low-voltage (2.5–5.5 V), low-power (820 µA typ.) signal conditioning. It delivers 20 MHz gain-bandwidth at gain ≥ 4, 35 mA output drive, and 1.5 mV max input offset voltage (A grade), enabling high-accuracy sensor interfaces in battery-powered medical and automotive systems.
For engineers reviewing the TSV991AIQ2T datasheet, TSV991AIQ2T pinout, TSV991AIQ2T application, or TSV991AIQ2T equivalent, key selection criteria 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 across –40 °C to +125 °C with ESD protection ≥ 5 kV HBM.
Technical Context
The TSV991AIQ2T employs a voltage-feedback topology optimized for stable closed-loop operation only at gains ≥ 4 (non-inverting) or ≤ –3 (inverting), with phase margin ≥ 45° under 100 pF capacitive load. Its input stage uses complementary bipolar transistors to achieve rail-to-rail common-mode range (VCC– –0.1 V to VCC+ +0.1 V) and 1 pA typical input bias current.
Output stage delivers symmetrical sourcing/sinking capability (≥32 mA) with rail-to-rail swing (≤40 mV from rails at 10 kΩ), while maintaining 10 V/μs slew rate and 0.0014% THD+N at 1 kHz with 4.4 Vpp output - critical for active filtering and precision analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - supports single-cell Li-ion and dual-cell alkaline battery systems without LDO. |
| Gain-Bandwidth Product | 20 MHz - enables stable amplification of signals up to ~5 MHz at gain = 4 in sensor signal chains. |
| Input Offset Voltage (max) | 1.5 mV - limits DC error to <0.3% of full-scale in 0.5 V reference-based medical sensor outputs. |
| Supply Current (typ) | 820 µA - allows continuous operation >1 year on a 200 mAh coin cell in portable diagnostics. |
| Input Bias Current (typ) | 1 pA - prevents significant voltage drop across >1 GΩ source impedances (e.g., pH electrodes, piezoelectric sensors). |
| Output Drive | ±35 mA - drives 600 Ω loads directly (e.g., ADC input buffers, LED biasing) without external boost. |
| ESD Protection | ≥5 kV HBM - meets IEC 61000-4-2 Level 4 for robustness in handheld and automotive assembly environments. |
Pinout & Package
TSV991AIQ2T is housed in a thermally enhanced DFN8 2×2 mm package with exposed pad (not internally connected; may be tied to VCC– or left floating). Pin 1 is marked by a dot; pin numbering follows standard top-view counterclockwise layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (IN–) | Differential node for feedback network connection; referenced to common-mode range extending 0.1 V beyond rails. |
| 2 | Non-Inverting Input (IN+) | Sensor or reference signal input; ultra-high impedance (1 pA bias) preserves signal integrity from high-Z sources. |
| 3 | Output (OUT) | Class-AB rail-to-rail output capable of sourcing/sinking ≥32 mA into 600 Ω while maintaining linearity. |
| 4 | VCC– (GND) | Power return path; must be decoupled with 10 nF capacitor placed within 2 mm of pin per layout guidelines. |
| 5 | VCC+ | Positive supply input (2.5–5.5 V); thermal resistance junction-to-ambient is 57 °C/W for thermal design margining. |
| 6–8 | No Connect (NC) | Internally unconnected pins; must remain floating or grounded per PCB layout best practices to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in 3.3 V systems - e.g., 0–3.3 V ADC interfacing without level-shifting. |
| Low input offset drift | 2 µV/°C - ensures <15 µV total offset shift over –40 °C to +125 °C, critical for automotive cabin temperature sensing. |
| High CMRR | 75 dB min (at 25 °C) - rejects common-mode noise from motor drivers or switching regulators in mixed-signal PCBs. |
| Stable at gain ≥4 | Eliminates need for external compensation in gain-of-5 instrumentation amplifier stages, reducing BOM count. |
| Ultra-low noise density | 21 nV/√Hz at 10 kHz - preserves SNR in audio preamps and EEG front-ends where signal amplitudes are sub-mV. |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Amplifying microvolt-level ECG signals from dry electrodes in wearable patches. IC Role / Device Role / Timing Role: Primary signal-conditioning amplifier in analog front-end, providing gain-of-100 with DC-coupled rail-to-rail output to SAR ADC. Use Value: 1 pA input bias avoids electrode polarization; 1.5 mV max Vio ensures baseline stability <0.5% of 300 µV peak ECG amplitude. | Use Scenario: Conditioning thermistor and humidity sensor outputs in remote environmental monitoring nodes. IC Role / Device Role / Timing Role: Low-power buffer and filter driver feeding multiplexed 12-bit ADC, operating intermittently from CR2032 battery. Use Value: 820 µA quiescent current extends battery life to >2 years; rail-to-rail output maximizes ADC utilization across 0–3.0 V supply range. |
| Automotive Cabin Sensors | Active Filtering for Industrial IoT |
Use Scenario: Signal conditioning for MEMS pressure sensors in HVAC control modules exposed to –40 °C to +105 °C ambient. IC Role / Device Role / Timing Role: Precision gain stage with integrated EMI filtering, operating from 5 V vehicle bus with local LDO bypass. Use Value: 125 °C max operating temperature and 5 kV HBM rating ensure reliability in under-dash environments; 20 MHz GBP supports fast transient response to pressure spikes. | Use Scenario: 2nd-order Sallen-Key anti-aliasing filter preceding sigma-delta ADC in predictive maintenance vibration sensors. IC Role / Device Role / Timing Role: Unity-gain-stable configured as active filter with external R/C network; gain set to 4 for stability margin. Use Value: 10 V/μs slew rate handles 10 kHz vibration harmonics without distortion; 0.0014% THD+N maintains spectral purity for FFT-based fault detection. |
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 |
|---|---|---|---|
| TSV911AIT1G | 8 MHz GBP, unity-gain stable, 550 µA ICC, 4.5 mV max Vio (A grade) | Better for low-frequency (<1 MHz), ultra-low-power designs where gain = 1 is required | Select when unity-gain stability and lower ICC outweigh bandwidth needs |
| MCP6001T-E/OT | 1 MHz GBP, rail-to-rail I/O, 100 µA ICC, 2.5 mV max Vio, 6 V max supply | Optimized for cost-sensitive, wide-supply industrial controls with relaxed speed/noise requirements | Select for <100 kHz applications where 10× lower ICC justifies 20× lower GBP |
Compared with TSV991AIQ2T, TSV911AIT1G trades 60% bandwidth for unity-gain stability and 33% lower power, while MCP6001T-E/OT sacrifices 95% bandwidth and 10× higher noise for extreme power efficiency and broader supply range - making TSV991AIQ2T optimal for high-fidelity, medium-speed sensor interfaces demanding both precision and responsiveness.
Availability
TSV991AIQ2T is available at Aetrix Electronics and suitable for battery-powered medical wearables, automotive cabin sensors, portable data loggers, and industrial active filters requiring stable component supply across extended temperature ranges.
Supply support for TSV991AIQ2T 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, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.
The TSV99x family targets high-precision, low-voltage analog signal chains - specifically engineered for sensor interfaces, portable instrumentation, and automotive subsystems where rail-to-rail operation, low power, and robust ESD performance are mandatory.
FAQ
Is TSV991AIQ2T unity-gain stable?
No. The TSV991AIQ2T is intentionally not unity-gain stable and requires minimum closed-loop gain of +4 (non-inverting) or –3 (inverting) for phase margin ≥45°. Attempting unity-gain operation without external compensation - such as a series resistor at the output or feedback capacitor - will cause oscillation or peaking, especially with capacitive loads >100 pF.
What is the function of the exposed pad on the DFN8 2×2 package?
The exposed pad on the TSV991AIQ2T's DFN8 2×2 package is not electrically connected internally. Per STMicroelectronics' recommendation, it may be soldered to a PCB copper pour tied to VCC– (ground) to improve thermal dissipation (RthJA = 57 °C/W), or left floating if thermal constraints permit. It must never be connected to VCC+ or signal nets.
Can TSV991AIQ2T drive a 600 Ω load at 5 V supply?
Yes. At VCC = 5 V, the TSV991AIQ2T guarantees ±32 mA output current (min) into 600 Ω loads while maintaining rail-to-rail swing (VOL ≤150 mV, VOH ≤150 mV) and 0.0014% THD+N at 1 kHz. This enables direct driving of ADC reference buffers, LED bias networks, or low-impedance transducer interfaces without external gain stages.
How does the A-grade offset voltage specification impact system calibration?
The A-grade 1.5 mV max input offset voltage (over full temperature range) reduces initial calibration burden in production: for a 3.3 V full-scale system, it contributes <0.045% full-scale error - often within acceptable limits for Class II medical devices or Tier-2 automotive sensors, allowing simplified one-point offset trim or even zero-trim operation in cost-sensitive designs.
TSV991AIQ2T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- 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:
- 1.5 mV
- 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:
- 8-DFN (2x2)
TSV991AIQ2T FAQ
1.How can I place an order for TSV991AIQ2T through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV991AIQ2T 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 TSV991AIQ2T reliable?
The price and inventory of TSV991AIQ2T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV991AIQ2T is usually 5 days.
3.What payment methods are accepted for TSV991AIQ2T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV991AIQ2T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV991AIQ2T?
TSV991AIQ2T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV991AIQ2T 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 TSV991AIQ2T?
For technical support, including TSV991AIQ2T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV991AIQ2T requirements.
6.How does Aetrix verify that TSV991AIQ2T is sourced from the original manufacturer or authorized distributors?
All TSV991AIQ2T 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 TSV991AIQ2T meets industry standards.
7.What is the process for return or replacement of TSV991AIQ2T?
All TSV991AIQ2T units undergo pre-shipment inspection (PSI). If there is an issue with TSV991AIQ2T, 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 TSV991AIQ2T part is unused and in its original packaging.
Return procedure for TSV991AIQ2T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSV991AIQ2T Tags
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LM358DT
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