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STMicroelectronics TSV6191AICT
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- Part No.:
- TSV6191AICT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TSV6191AICT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:16,306
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Product details
Overview
TSV6191AICT from STMicroelectronics is a rail-to-rail input/output CMOS operational amplifier optimized for ultra-low-power, low-voltage sensor signal conditioning. It delivers 450 kHz gain bandwidth, 10 µA supply current at 5 V, 800 µV max input offset voltage (A-grade), 1 pA typical input bias current, and operates from 1.5 to 5.5 V - enabling use in battery-powered smoke detectors and portable medical sensors.
For engineers reviewing the TSV6191AICT datasheet, TSV6191AICT pinout, TSV6191AICT application, or TSV6191AICT equivalent, this page provides verified pin functions, real-world design meaning of key specs, validated alternative options, and application-specific implementation guidance for low-power analog front-ends.
Technical Context
The TSV6191AICT uses complementary PMOS/NMOS input stages to achieve rail-to-rail input common-mode range (VCC− −0.1 V to VCC+ +0.1 V) with guaranteed no phase reversal. Its internal compensation ensures stability only at gain ≥ 5 V/V (minimum stable gain), requiring external feedback networks configured for non-inverting ≥5× or inverting ≥−4×.
Output stage drives within 35 mV of both rails into 10 kΩ load, supporting full-swing signal acquisition across 1.5–5.5 V supplies. Input offset drift is tightly controlled at 2 µV/°C, and CMRR reaches 80 dB at 5 V, making it suitable for precision DC-coupled sensor interfaces where supply headroom and thermal stability are constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.5 to 5.5 V - enables direct operation from single-cell Li-ion (3.0–3.7 V), alkaline (1.5 V), or regulated 3.3/5 V rails without level-shifting. |
| Quiescent Current | 10.5 µA typ at 5 V - allows >10-year battery life in always-on smoke detector nodes powered by CR2032 (220 mAh). |
| Gain Bandwidth | 450 kHz typ - supports anti-aliasing filtering up to ~70 kHz and sensor signal amplification with <1% gain error at 10 kHz. |
| Input Offset Voltage | 800 µV max (A version) - limits DC error to <0.8 mV in 1×–10× gain stages used for thermistor or bridge sensor outputs. |
| Input Bias Current | 1 pA typ - prevents significant voltage drop across high-impedance sources (e.g., pH electrodes, piezoresistive sensors >100 MΩ). |
| CMRR | 80 dB min at 5 V - rejects common-mode noise from shared ground paths in multi-sensor PCB layouts. |
| Output Swing | Within 35 mV of rails into 10 kΩ - preserves >98% dynamic range when interfacing with 12-bit SAR ADCs referenced to same supply. |
Pinout & Package
TSV6191AICT is housed in SC70-5 (SOT323-5) package: 2.0 × 2.1 mm body, 0.65 mm lead pitch, 0.26–0.46 mm lead length, JEDEC-compliant moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Drives loads down to 10 kΩ while maintaining rail-to-rail swing; requires local 10 nF decoupling to VCC for stability. |
| 2 (IN−) | Inverting input | High-impedance node (1 pA bias); sensitive to layout-induced leakage - keep trace short, guard with GND ring. |
| 3 (IN+) | Non-inverting input | Accepts signals from VCC− −0.1 V to VCC+ +0.1 V; transition region near VCC+ −0.7 V degrades CMRR slightly. |
| 4 (VCC−) | Negative supply | Ground reference for single-supply operation; must be connected directly to PCB ground plane with low-inductance path. |
| 5 (VCC+) | Positive supply | Accepts 1.5–5.5 V; decoupling capacitor (10 nF) required between Pin 5 and Pin 4 within 2 mm of package. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full utilization of ADC input range in single-supply systems without level-shifting circuitry. |
| Ultra-low input bias current | Preserves signal integrity from high-impedance sensors (e.g., photodiode transimpedance amps) without added offset error. |
| Stable at gain ≥5 V/V | Eliminates need for external compensation capacitors in standard non-inverting configurations used for sensor gain stages. |
| Low input offset drift | Reduces calibration frequency in field-deployed devices like portable blood glucose meters operating across −40 to 85 °C. |
| ECOPACK® compliant | Meets RoHS and halogen-free requirements for medical and consumer safety-critical applications. |
Applications
| Smoke Detector Signal Chain | Portable ECG Front-End |
|---|---|
Use Scenario: Amplifying weak ionization chamber current (pA–nA) in battery-powered residential smoke alarms. IC Role / Device Role / Timing Role: Primary transimpedance amplifier with 10 MΩ feedback resistor, converting current to voltage before 12-bit ADC sampling. Use Value: 1 pA input bias avoids loading the chamber; 10 µA quiescent current extends CR2032 battery life beyond 10 years in standby mode. | Use Scenario: Conditioning low-amplitude (0.5–2 mV), low-frequency (<100 Hz) biopotential signals from dry-electrode ECG patches. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer, providing high-Z interface and rail-to-rail DC coupling. Use Value: 800 µV max Vio minimizes baseline drift; rail-to-rail output ensures full ADC code utilization without AC coupling or DC restoration. |
| Proximity Sensor Interface | Thermistor-Based Temperature Monitor |
Use Scenario: Amplifying differential voltage from capacitive proximity sensing ICs in smart home motion detectors. IC Role / Device Role / Timing Role: Low-noise, unity-gain stable buffer isolating sensor output from noisy digital MCU domains. Use Value: 110 nV/√Hz input noise preserves SNR in sub-millivolt signals; 450 kHz GBW supports fast response to hand-waving gestures. | Use Scenario: Linearizing and amplifying resistance-to-voltage conversion from NTC thermistors in wearable health trackers. IC Role / Device Role / Timing Role: Precision voltage follower driving ADC reference divider network with minimal loading error. Use Value: 2 µV/°C offset drift maintains ±0.2 °C accuracy over −10 to 50 °C ambient without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rail-to-rail, low-power op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-I/OT | Higher 100 µA ICC, 1 MHz GBW, 2 mV Vio max, SC70-5 package | Better speed but 10× higher power; less suitable for multi-year battery life | Select when system requires faster settling (e.g., multiplexed sensor arrays) and can tolerate higher current draw. |
| LTC1540CS5#TRMPBF | 1 µA ICC, 2 kHz GBW, 1.5 mV Vio max, SOT23-5 package | Lower power but insufficient bandwidth for active filtering above 300 Hz | Select only for ultra-low-power, DC-only applications like thermostat reference buffers where speed is secondary. |
Compared with MCP6001T-I/OT and LTC1540CS5#TRMPBF, the TSV6191AICT uniquely balances sub-10 µA quiescent current, 450 kHz bandwidth, and A-grade offset - making it optimal for battery-powered sensor nodes needing both precision and responsiveness without sacrificing runtime.
Availability
TSV6191AICT is available at Aetrix Electronics and suitable for smoke detector manufacturing, portable medical instrumentation, proximity sensing modules, and battery-powered industrial monitoring requiring stable component supply across long production lifecycles.
Supply support for TSV6191AICT 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, analog ICs, MEMS, and power solutions for automotive, industrial, and consumer markets.
The TSV6191AICT belongs to ST's precision low-power op-amp product line, engineered specifically for energy-constrained sensor signal chains in safety-critical and portable applications where accuracy, reliability, and longevity are mandatory.
FAQ
What is the minimum stable gain configuration for TSV6191AICT?
The TSV6191AICT requires a closed-loop gain of at least 5 V/V in non-inverting mode or −4 V/V in inverting mode to ensure 60° phase margin and prevent oscillation. This is due to internal compensation optimized for low-power operation; using lower gains risks instability and overshoot in step responses.
Can TSV6191AICT operate from a 1.5 V supply?
Yes - the TSV6191AICT is fully specified from 1.5 V to 5.5 V. At 1.5 V, it maintains 380 kHz gain bandwidth, 6.5 µA supply current, and rail-to-rail output swing within 50 mV of both rails into 10 kΩ, enabling compatibility with single alkaline or NiMH cells without voltage boosting.
Does TSV6191AICT support rail-to-rail input at the negative rail?
Yes - its input common-mode range extends to VCC− −0.1 V, allowing direct connection of sensors referenced to ground (e.g., resistive bridge midpoints) without level-shifting. However, performance parameters like CMRR and Vio degrade slightly within 0.7 V of VCC+, as confirmed in Figures 13–14 of the datasheet.
Is external compensation required for unity-gain stable operation?
No - the TSV6191AICT is not unity-gain stable. It is internally compensated for minimum gain ≥5 V/V. Attempting unity-gain use will cause peaking, ringing, or oscillation. For unity-gain applications, select ST's TSV6291 (unity-gain stable, 17 µA ICC) or redesign the stage for ≥5× gain with appropriate feedback network.
TSV6191AICT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.08V/µs
- Gain Bandwidth Product:
- 450 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 800 µV
- Current - Supply:
- 10.5µA
- Current - Output / Channel:
- 63 mA
- Voltage - Supply Span (Min):
- 1.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
TSV6191AICT FAQ
1.How can I place an order for TSV6191AICT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV6191AICT 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 TSV6191AICT reliable?
The price and inventory of TSV6191AICT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV6191AICT is usually 5 days.
3.What payment methods are accepted for TSV6191AICT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV6191AICT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV6191AICT?
TSV6191AICT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV6191AICT 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 TSV6191AICT?
For technical support, including TSV6191AICT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV6191AICT requirements.
6.How does Aetrix verify that TSV6191AICT is sourced from the original manufacturer or authorized distributors?
All TSV6191AICT 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 TSV6191AICT meets industry standards.
7.What is the process for return or replacement of TSV6191AICT?
All TSV6191AICT units undergo pre-shipment inspection (PSI). If there is an issue with TSV6191AICT, 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 TSV6191AICT part is unused and in its original packaging.
Return procedure for TSV6191AICT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSV6191AICT Tags
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LM358DT
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