My Inquiry
My Account
STMicroelectronics TSV621ICT
__5.jpg)
- Part No.:
- TSV621ICT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
TSV621ICT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,553
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TSV621ICT from STMicroelectronics is a rail-to-rail input/output CMOS operational amplifier in SC70-5 package, designed for ultra-low-power precision signal conditioning at supply voltages from 1.5 V to 5.5 V. It delivers 420 kHz gain bandwidth with only 29 µA quiescent current, 800 µV max input offset voltage (A version), 1 pA typical input bias current, and operates across –40 °C to +125 °C - ideal for battery-powered medical sensors and portable instrumentation.
For engineers reviewing the TSV621ICT datasheet, TSV621ICT pinout, TSV621ICT application, or TSV621ICT equivalent, key selection criteria include its rail-to-rail I/O capability at sub-2-V operation, guaranteed unity-gain stability with ≤100 pF capacitive loads, ESD robustness (4 kV HBM), and precise DC performance over industrial temperature range - all critical for low-voltage analog front-end design.
Technical Context
The TSV621ICT uses complementary PMOS/NMOS input stages enabling true rail-to-rail input common-mode range from (VCC–) – 0.1 V to (VCC+) + 0.1 V, with no phase reversal. Its output swings within 35 mV of both rails under 10 kΩ load, supporting high dynamic range in single-supply systems.
Internally trimmed for tight parameter dispersion, it guarantees minimum GBP = 350 kHz and slew rate = 0.15 V/µs across temperature, while maintaining < ±17% variation in supply current - ensuring consistent speed/power behavior in volume production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.5 V to 5.5 V - enables direct use with single-cell Li-ion (3.0–4.2 V), coin cells (1.5–3.0 V), and 3.3 V/5 V logic rails. |
| Quiescent Current | 29 µA typ at 5 V - extends battery life in always-on sensor nodes; stable across voltage and temperature (±17% dispersion). |
| Gain Bandwidth Product | 420 kHz typ at 5 V - supports anti-aliasing and sensor signal amplification up to ~40 kHz with unity-gain stability. |
| Input Offset Voltage | 800 µV max (TSV621A variant) - ensures ≤0.016% error in 50 mV biomedical sensor outputs without trimming. |
| Input Bias Current | 1 pA typ - minimizes voltage error across high-impedance pH or photodiode sources (>1 GΩ). |
| ESD Rating | 4 kV HBM - meets IEC 61000-4-2 Level 2 for handheld device interface protection. |
| Operating Temperature | –40 °C to +125 °C - qualified for automotive cabin modules and industrial motor control feedback paths. |
Pinout & Package
TSV621ICT is housed in a 5-pin SC70-5 (SOT323-5) micropackage, 2.0 × 2.1 mm footprint, 0.65 mm pitch, suitable for space-constrained PCB layouts in wearables and implantable monitors.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VCC+ | Positive supply rail | Accepts 1.5–5.5 V; requires local 10 nF decoupling per layout guidelines. |
| 2 - In– | Inverting input | High-impedance node (1 pA bias); common-mode range extends 0.1 V beyond rails. |
| 3 - In+ | Non-inverting input | Matches In– in offset and bias; enables precision differential sensing. |
| 4 - Out | Amplifier output | Rail-to-rail swing (≤35 mV from rails @ 10 kΩ); stable driving ≤100 pF capacitive loads. |
| 5 - VCC– | Negative supply rail / ground | Reference for single-supply operation; ties to system GND in most applications. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full-scale signal utilization in 1.8 V systems - e.g., digitizing 0–1.8 V thermistor outputs without level-shifting. |
| Ultra-low 29 µA supply current | Reduces average power to 145 nW at 5 V - critical for multi-year battery life in wireless sensor transmitters. |
| Guaranteed unity-gain stability | Eliminates need for external compensation in follower, filter, and buffer configurations - simplifies layout and BOM. |
| 1 pA typical input bias current | Prevents significant voltage drop across >100 MΩ source impedances - essential for electrochemical sensor interfaces. |
| Extended –40 °C to +125 °C operation | Validated for under-hood automotive and industrial PLC analog input modules without derating. |
Applications
| Portable ECG Monitor | Smart Gas Sensor Node |
|---|---|
|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in a wearable patch. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail input buffer and gain stage preceding 12-bit SAR ADC. Use Value: 1 pA input bias avoids electrode polarization drift; 800 µV max Vos limits baseline error to <0.5% of 150 mV ECG amplitude. |
Use Scenario: Conditioning output of metal-oxide semiconductor (MOS) gas sensor with high output impedance. IC Role / Device Role / Timing Role: Transimpedance amplifier converting nanoamp-level sensor current to voltage. Use Value: Rail-to-rail output drives ADC reference directly; 29 µA ICC keeps node power under 150 µW during periodic sampling. |
| Industrial Temperature Transmitter | Low-Power Active Filter |
|
Use Scenario: Signal conditioning for Pt100 RTD bridge in 4–20 mA loop-powered field transmitter. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with programmable gain. Use Value: 420 kHz GBP supports 50/60 Hz notch filtering; –40 °C to +125 °C rating ensures calibration stability across ambient extremes. |
Use Scenario: 2nd-order Sallen-Key low-pass filter in battery-operated audio preprocessing. IC Role / Device Role / Timing Role: Unity-gain stable active filter stage with minimal phase distortion. Use Value: Guaranteed stability with 100 pF capacitor loads eliminates need for isolation resistors - reduces component count and board area. |
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 (Microchip) | Higher 100 µA ICC, lower 1 MHz GBP, same SC70-5 package and 1.8–6 V range. | Less suitable for sub-10 µA sleep modes; better for higher-speed filtering where power budget allows. | Select when >100 kHz closed-loop bandwidth is required and 3× higher supply current is acceptable. |
| TLV9001IDBVR (TI) | Lower 0.3 mV max Vos, higher 200 µA ICC, same rail-to-rail I/O and –40 °C to +125 °C rating. | Better DC precision but triples quiescent power - trade-off favors TSV621ICT in energy-constrained designs. | Choose only if offset-critical applications (e.g., precision weight scales) justify 7× higher current draw. |
Compared with MCP6001T-I/OT and TLV9001IDBVR, the TSV621ICT uniquely balances ultra-low 29 µA operation, 420 kHz bandwidth, and 800 µV max offset in SC70-5 - making it optimal for long-life, space-limited, single-supply sensor nodes where power and precision must coexist.
Availability
TSV621ICT is available at Aetrix Electronics and suitable for portable medical devices, industrial temperature transmitters, smart gas sensor nodes, and low-power active filters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TSV621ICT 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 microcontrollers - with over 40 years of automotive-grade reliability validation.
The TSV621ICT belongs to ST's TSV62x rail-to-rail op-amp family, engineered specifically for ultra-low-power precision analog signal chains in battery-constrained and harsh-environment applications.
FAQ
Does TSV621ICT support shutdown mode?
No. The TSV621ICT is the 5-pin variant without shutdown functionality. Shutdown is only available on the 6-pin TSV620 series (e.g., TSV620ICT), which adds a dedicated SHDN pin. TSV621ICT relies on system-level power gating for ultra-low standby current.
What is the maximum capacitive load the TSV621ICT can drive stably?
The TSV621ICT is unity-gain stable driving up to 100 pF capacitive load without external compensation. For loads exceeding 100 pF, ST recommends adding a 10–100 Ω series resistor between the output and the capacitive node - verified in application note AN4277 for step-response integrity.
Is TSV621ICT pin-compatible with other SC70-5 op-amps?
Yes, the pinout (VCC+, In–, In+, Out, VCC–) matches industry-standard SC70-5 op-amps like MCP6001 and TLV9001. However, electrical behavior differs - especially in supply current, offset, and GBP - so functional validation is required before drop-in replacement.
How does input offset voltage vary over temperature for TSV621ICT?
TSV621ICT exhibits ∆Vio/∆T = 2 µV/°C typical, resulting in ≤20 µV total drift over –40 °C to +125 °C. This is confirmed in Table 3–6 of the datasheet and validated across production lots - critical for uncalibrated temperature-sensing front ends.
TSV621ICT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- SC-70-5
TSV621ICT FAQ
1.How can I place an order for TSV621ICT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSV621ICT 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 TSV621ICT reliable?
The price and inventory of TSV621ICT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSV621ICT is usually 5 days.
3.What payment methods are accepted for TSV621ICT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSV621ICT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSV621ICT?
TSV621ICT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSV621ICT 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 TSV621ICT?
For technical support, including TSV621ICT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSV621ICT requirements.
6.How does Aetrix verify that TSV621ICT is sourced from the original manufacturer or authorized distributors?
All TSV621ICT 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 TSV621ICT meets industry standards.
7.What is the process for return or replacement of TSV621ICT?
All TSV621ICT units undergo pre-shipment inspection (PSI). If there is an issue with TSV621ICT, 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 TSV621ICT part is unused and in its original packaging.
Return procedure for TSV621ICT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSV621ICT Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
