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STMicroelectronics TSV621ILT
- Part No.:
- TSV621ILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TSV621ILT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,988
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Product details
Overview
TSV621ILT from STMicroelectronics is a rail-to-rail input/output CMOS operational amplifier optimized for ultra-low-power, precision signal conditioning in battery-powered systems. It operates from 1.5 V to 5.5 V, consumes 29 µA typical supply current at 5 V, delivers 420 kHz gain bandwidth, and features 800 µV max input offset voltage (A version), 1 pA typical input bias current, and guaranteed operation from –40 °C to +125 °C.
For engineers reviewing the TSV621ILT datasheet, TSV621ILT pinout, TSV621ILT application, or TSV621ILT equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions for SOT23-5, application-specific implementation insights, and two confirmed alternative op-amps with documented functional and parametric differences.
Technical Context
The TSV621ILT uses complementary PMOS/NMOS input pairs enabling true rail-to-rail input common-mode range (–0.1 V to VCC + 0.1 V) and rail-to-rail output swing within 35 mV of both rails under 10 kΩ load. Its unity-gain stable architecture supports capacitive loads up to 100 pF without oscillation.
Internally trimmed for narrow parameter dispersion, it guarantees minimum GBP ≥ 350 kHz and slew rate ≥ 0.15 V/µs across temperature and supply voltage. Input offset drift is 2 µV/°C, and ESD tolerance reaches 4 kV HBM - critical for portable medical and sensor front-end designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.5 V to 5.5 V - enables direct use with single-cell Li-ion (3.0–3.7 V), alkaline (1.5 V), or regulated 3.3 V/5 V rails without level-shifting. |
| Quiescent Current | 29 µA typ at 5 V - extends battery life in always-on sensor nodes; 33 µA max over full temperature range ensures predictable power budgeting. |
| Gain Bandwidth Product | 420 kHz typ at 5 V - supports low-frequency precision amplification (e.g., thermocouple, strain gauge) with adequate phase margin for stability. |
| Input Offset Voltage | 800 µV max (TSV621A variant); 2.8 mV max (TSV621) - determines DC accuracy in high-gain sensor interfaces; A-version suitable for <1% error in 100 mV full-scale inputs. |
| Input Bias Current | 1 pA typ - minimizes voltage error across high-impedance sources (e.g., pH electrodes, photodiode transimpedance feedback networks). |
| Rail-to-Rail I/O | Input CMR: (VCC−) − 0.1 V to (VCC+) + 0.1 V; Output swing: within 35 mV of rails - maximizes dynamic range in low-voltage ADC driver and comparator reference applications. |
| ESD Rating | 4 kV HBM - meets IEC 61000-4-2 Level 2 for handheld device robustness without external protection diodes. |
Pinout & Package
TSV621ILT is supplied in the SOT23-5 package - a 5-pin, surface-mount, lead-free ECOPACK® package measuring 2.9 × 1.6 × 1.1 mm (max), optimized for space-constrained portable PCBs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply rail - must be decoupled with ≥10 nF capacitor placed adjacent to pin to suppress high-frequency noise and ensure stability. |
| 2 | In− | Inverting input - high-impedance node; layout requires guard ring and short trace to minimize leakage and parasitic capacitance. |
| 3 | In+ | Non-inverting input - referenced to system ground or bias network; matched trace length to In− recommended for common-mode rejection. |
| 4 | GND | Ground reference - connected directly to low-impedance PCB ground plane; shared return path with VCC decoupling cap. |
| 5 | Out | Amplifier output - capable of sourcing/sinking ≥40 mA; avoid routing near noisy digital traces to prevent coupling into high-gain analog paths. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 1.5–5.5 V supply range - preserves signal headroom in low-voltage data acquisition without external level-shifting circuitry. |
| Low input bias current (1 pA typ) | Reduces voltage error across >100 MΩ source impedances - essential for accurate measurement in electrochemical sensors and piezoelectric transducers. |
| Guaranteed unity-gain stability | Supports buffer, active filter, and voltage-follower configurations with ≤100 pF capacitive load - eliminates need for external compensation components. |
| Narrow AC/DC parameter dispersion | ±17% variation in supply current ensures consistent GBP (≥350 kHz) and slew rate (≥0.15 V/µs) across production lots - simplifies design validation and reduces test coverage. |
| Extended temperature range (–40 °C to +125 °C) | Validated performance for automotive cabin modules, industrial motor controllers, and outdoor IoT edge nodes without derating or thermal management overhead. |
Applications
| Medical Sensor Interface | Portable Gas Detector |
|---|---|
Use Scenario: Amplifying microvolt-level signals from electrochemical gas sensors in handheld air quality monitors. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier stage with rail-to-rail output driving 12-bit SAR ADC reference input. Use Value: 1 pA input bias current prevents sensor polarization; 800 µV max Vos limits zero-point error to <0.5% of 100 mV full-scale sensor output. |
Use Scenario: Conditioning low-amplitude, low-frequency (<10 Hz) signals from catalytic bead or NDIR detectors in battery-operated safety equipment. IC Role / Device Role / Timing Role: Low-noise, low-drift transducer signal conditioner operating from coin-cell supply (1.5 V) with minimal quiescent power draw. Use Value: 29 µA supply current extends 10-year shelf-life requirement; rail-to-rail I/O maintains >95% dynamic range at 1.5 V supply. |
| Wearable Biopotential Front-End | Industrial Temperature Transmitter |
Use Scenario: Buffering high-impedance ECG/EMG electrode signals in compact fitness trackers with constrained PCB area. IC Role / Device Role / Timing Role: Unity-gain follower isolating electrode from downstream filtering and digitization stages; SOT23-5 footprint minimizes board real estate. Use Value: SC70-5/SOT23-5 package allows placement within 2 mm of electrode pads; 4 kV HBM rating withstands ESD events during user handling. |
Use Scenario: Signal conditioning for RTD or thermistor bridges in loop-powered 4–20 mA temperature transmitters deployed in factory environments. IC Role / Device Role / Timing Role: Precision difference amplifier with programmable gain, operating from 3.3 V isolated supply with extended industrial temperature compliance. Use Value: Guaranteed –40 °C to +125 °C operation ensures calibration stability across ambient extremes; 2 µV/°C Vos drift limits temperature error to <0.1 °C over full range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision low-power operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-I/OT (Microchip) | Higher Vos (1.5 mV max), lower GBP (1 MHz), no guaranteed rail-to-rail input at 1.5 V. | Suitable for 3.3 V/5 V systems where input common-mode range above VCC−0.3 V is acceptable; less optimal for sub-2 V battery monitoring. | Select when higher speed is needed and supply ≥2.7 V; verify input stage behavior below 2 V using Microchip's characterization curves. |
| TLV9001IDBVR (TI) | Lower Vos (0.75 mV max), higher IQ (60 µA), rail-to-rail input only down to VCC−0.1 V (not beyond). | Better DC accuracy but doubles quiescent current - reduces battery life in multi-year IoT deployments; requires tighter supply regulation. | Prefer for applications demanding <0.8 mV Vos and 3.3 V+ supplies; avoid in 1.5 V alkaline-powered devices due to higher minimum VCC (1.8 V). |
Compared with MCP6001T-I/OT and TLV9001IDBVR, the TSV621ILT uniquely balances sub-30 µA quiescent current, true rail-to-rail input at 1.5 V, and 4 kV HBM robustness - making it the optimal choice for long-life, ultra-low-voltage, high-reliability sensor signal chains.
Availability
TSV621ILT is available at Aetrix Electronics and suitable for battery-powered medical devices, portable environmental sensors, wearable biometric monitors, and industrial temperature transmitters requiring stable component supply across multi-year production cycles.
Supply support for TSV621ILT 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 specializing in power management, analog, MEMS, and microcontroller technologies for automotive, industrial, and consumer applications.
The TSV62x series belongs to ST's precision low-power op-amp product line, engineered specifically for energy-constrained, high-accuracy analog signal conditioning in portable and harsh-environment electronics.
FAQ
Is the TSV621ILT pin-compatible with the TSV620ILT?
No. The TSV621ILT is a 5-pin device (VCC, In−, In+, GND, Out) in SOT23-5/SC70-5 packages, while the TSV620ILT is a 6-pin part (adding SHDN) in SOT23-6/SC70-6. Their footprints and pinouts are incompatible; PCB redesign is required for substitution.
Does the TSV621ILT support shutdown mode?
No. Shutdown functionality is exclusive to the TSV620/TSV620A variants (6-pin versions). The TSV621/TSV621A lack a SHDN pin and operate continuously when powered. For power-gated applications, external MOSFET control of VCC is required.
What is the maximum capacitive load the TSV621ILT can drive stably?
The TSV621ILT is unity-gain stable with capacitive loads up to 100 pF when configured as a voltage follower. Driving larger loads (e.g., ADC input capacitance + PCB trace) requires an isolation resistor (10–100 Ω) in series with the output, per ST's Application Note AN4272.
Can the TSV621ILT operate from a 1.5 V supply with full specification compliance?
Yes. Electrical characteristics are fully characterized and guaranteed at 1.5 V, including rail-to-rail input (down to VCC−0.1 V), 29 µA supply current, and 275 kHz GBP minimum. All parameters meet datasheet limits across –40 °C to +125 °C at 1.5 V.
TSV621ILT 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:
- 0.14V/µs
- Gain Bandwidth Product:
- 420 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 4 mV
- Current - Supply:
- 29µA
- Current - Output / Channel:
- 74 mA
- Voltage - Supply Span (Min):
- 1.5 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
TSV621ILT FAQ
1.How can I place an order for TSV621ILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV621ILT 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 TSV621ILT reliable?
The price and inventory of TSV621ILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV621ILT is usually 5 days.
3.What payment methods are accepted for TSV621ILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV621ILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV621ILT?
TSV621ILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV621ILT 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 TSV621ILT?
For technical support, including TSV621ILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV621ILT requirements.
6.How does Aetrix verify that TSV621ILT is sourced from the original manufacturer or authorized distributors?
All TSV621ILT 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 TSV621ILT meets industry standards.
7.What is the process for return or replacement of TSV621ILT?
All TSV621ILT units undergo pre-shipment inspection (PSI). If there is an issue with TSV621ILT, 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 TSV621ILT part is unused and in its original packaging.
Return procedure for TSV621ILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSV621ILT Tags
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