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Texas Instruments TLV2621IDBVT
- Part No.:
- TLV2621IDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV2621IDBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,240
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Product details
Overview
TLV2621IDBVT from Texas Instruments is a single-channel, rail-to-rail output CMOS operational amplifier optimized for low-power, wide-bandwidth applications in single-supply systems. It delivers 11 MHz gain-bandwidth, 10 V/µs slew rate, 27 nV/√Hz input voltage noise, 800 µA supply current per channel, and operates from 2.7 V to 5.5 V over –40°C to +125°C - enabling use in Li-ion-powered data acquisition front-ends and precision sensor signal conditioning.
For engineers reviewing the TLV2621IDBVT datasheet, TLV2621IDBVT pinout, TLV2621IDBVT application, or TLV2621IDBVT equivalent, this page provides verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options for industrial-grade opamp selection in space-constrained, battery-sensitive designs.
Technical Context
The TLV2621IDBVT employs a CMOS input stage with rail-to-rail output swing and an input common-mode range extending to the positive rail (VICR = 1 V to VDD + 0.2 V), enabling direct interfacing with high-side referenced sensors and ADC drivers. Its 11-MHz unity-gain bandwidth and 10-V/µs slew rate support stable operation driving 2-kΩ loads with 10-pF capacitive load while maintaining 63° phase margin.
It integrates an active shutdown function (SHDN pin) that reduces supply current to 4 µA/channel, with turn-on time of 4.5 µs (VDD = 2.7 V) and turn-off time of 200 ns - critical for power-gated signal chains in portable instrumentation and IoT edge nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion (3.0–3.7 V nominal) and 3.3-V microcontroller I/O domains. |
| Gain-Bandwidth Product | 11 MHz - enables stable closed-loop operation up to ~1 MHz at unity gain with minimal phase loss in filter or buffer configurations. |
| Slew Rate | 10 V/µs - supports clean 1-Vpp, 1-MHz sine wave output without distortion into 2-kΩ load. |
| Input Voltage Noise | 27 nV/√Hz at 10 kHz - suitable for amplifying µV-level sensor outputs (e.g., thermocouples, strain gauges) without dominating system noise floor. |
| Shutdown Current | 4 µA/channel - reduces total system standby power by >99% vs active mode (800 µA), enabling multi-second sleep cycles in energy-harvesting nodes. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor control, and outdoor environmental monitoring. |
| Input Offset Voltage | Max 3500 µV at 25°C - ensures <0.1% gain error in 100-mV full-scale sensor interfaces without trimming. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.45 mm body height, surface-mount, RoHS-compliant, moisture sensitivity level 1 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN− | Inverting input | Differential node for feedback network connection; high-impedance CMOS input (2 pA bias current) minimizes resistor-induced offset errors. |
| 2 - IN+ | Non-inverting input | Accepts signals up to VDD + 0.2 V - enables direct interface with rail-referenced sources (e.g., DAC outputs, voltage dividers tied to VDD). |
| 3 - OUT | Amplifier output | Rail-to-rail swing (2.55 V high / 0.2 V low at VDD = 2.7 V, IO = ±10 mA) drives ADC inputs or low-impedance filters directly. |
| 4 - GND | Analog ground reference | Single ground return for input and output stages; requires low-impedance PCB connection to minimize PSRR degradation. |
| 5 - VDD | Positive supply | Accepts 2.7–5.5 V; internal regulation ensures consistent performance across battery discharge curve (e.g., 3.6 V → 2.8 V). |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers full dynamic range to downstream 12-bit+ SAR ADCs without level-shifting circuitry, reducing BOM count and layout area. |
| Input range includes positive rail | Eliminates need for external level-shifters when buffering DACs or voltage references tied to VDD, simplifying single-supply signal chains. |
| 11-MHz bandwidth at 800 µA | Provides >2× bandwidth per µA vs comparable low-power opamps - critical for anti-aliasing filters in 500-kSPS data loggers. |
| 4-µA shutdown current | Enables microamp-level system sleep states; SHDN pin logic threshold (VIH = 2 V, VIL = 0.4 V) interfaces directly with 1.8-V/3.3-V GPIOs. |
| –40°C to +125°C operation | Validated performance across full industrial temperature range - no derating required for thermal design in enclosed enclosures or engine compartments. |
Applications
| Portable Data Acquisition | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Battery-powered handheld multimeter acquiring thermocouple, RTD, and voltage signals at 10 kSPS. IC Role / Device Role: Precision non-inverting amplifier and ADC driver with rail-to-rail output swing and low noise. Use Value: 27 nV/√Hz noise and 11-MHz GBW preserve SNR >85 dB for 16-bit resolution; 2.7-V minimum supply extends runtime on coin-cell or Li-ion. |
Use Scenario: 4–20 mA loop-powered pressure transmitter with local analog signal processing. IC Role / Device Role: Sensor excitation buffer and bridge amplifier in ultra-low-power analog front-end. Use Value: VICR extending to VDD + 0.2 V allows direct buffering of bridge outputs referenced to supply; shutdown mode cuts quiescent current to 4 µA during idle periods. |
| Li-ion Fuel Gauging Circuit | Medical ECG Front-End Stage |
|
Use Scenario: Coulomb counter IC measuring battery pack voltage and current sense amplifier output. IC Role / Device Role: High-precision, low-drift voltage follower for cell voltage monitoring path. Use Value: Max 3500 µV input offset ensures <0.5% full-scale error in 4.2-V measurement; 800 µA supply current minimizes self-heating drift in sealed battery packs. |
Use Scenario: First-stage instrumentation amplifier driver in wearable ECG patch with dry electrodes. IC Role / Device Role: Low-noise, low-power gain stage preceding programmable-gain amplifier and 24-bit delta-sigma ADC. Use Value: 27 nV/√Hz input noise contributes <1 µV RMS integrated noise (0.05–150 Hz), meeting AHA Class I diagnostic requirements without additional filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2620IDBVT | Same family, but dual-channel version in SOT-23-6 package; shares identical electrical specs except channel count and pinout. | Used where two independent amplifiers are needed (e.g., differential input + reference buffer); not pin-compatible with TLV2621IDBVT. | Select TLV2620IDBVT only when dual-channel functionality is required and board layout accommodates 6-pin SOT-23 footprint. |
| OPA320AIDBVR | Higher precision: 20-µV max VIO, 0.1-pA IIB, but higher supply current (1.8 mA) and narrower temp range (–40°C to +125°C same, but no extended spec). | Better for µV-level DC-coupled measurements (e.g., pH probes); less suitable for battery-constrained systems due to 2.25× higher IDD. | Choose OPA320AIDBVR when offset and bias current dominate system error budget, and power budget permits 1.8 mA/channel. |
Compared with TLV2621IDBVT, TLV2620IDBVT offers dual-channel integration in a larger package without performance trade-offs, while OPA320AIDBVR trades 125% higher supply current for 5× lower input offset - making TLV2621IDBVT optimal for cost- and power-sensitive industrial signal chains where 3.5-mV offset is acceptable.
Availability
TLV2621IDBVT is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor transmitters, and medical wearable devices requiring stable component supply across long production lifecycles and extreme temperature environments.
Supply support for TLV2621IDBVT 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision opamps and low-power signal chain solutions.
The TLV262x product line was designed specifically for single-supply, rail-to-rail, low-power industrial and portable applications - emphasizing wide bandwidth per watt, robust temperature performance, and small-footprint packaging for space-constrained designs.
FAQ
What is the maximum capacitive load the TLV2621IDBVT can drive while maintaining stability?
The TLV2621IDBVT is characterized for stable operation with up to 10 pF capacitive load at unity gain into a 2-kΩ resistive load, delivering 63° phase margin. Driving >10 pF requires external isolation resistor (e.g., 10–50 Ω in series with output) to prevent peaking or oscillation - confirmed in Figure 16 (Phase Margin vs Load Capacitance) of the TLV2621IDBVT datasheet.
Does the TLV2621IDBVT require external compensation for unity-gain stable operation?
No, the TLV2621IDBVT is internally compensated for unity-gain stability. Its 11-MHz gain-bandwidth and 63° phase margin at CL = 10 pF (RL = 2 kΩ) confirm unconditional stability in standard buffer and inverting/non-inverting configurations without added compensation components.
What is the absolute maximum supply voltage rating for the TLV2621IDBVT?
The absolute maximum supply voltage for the TLV2621IDBVT is 6 V, as specified in the Absolute Maximum Ratings table. Operation above 5.5 V (recommended maximum) risks permanent damage, even momentarily - especially during hot-plug or power sequencing events.
How does the TLV2621IDBVT behave when the shutdown pin is left floating?
The SHDN pin has no internal pull-up/down; if left floating, the TLV2621IDBVT may enter an undefined state with unpredictable current draw or output behavior. TI recommends tying SHDN to VDD (active) or GND (shutdown) via a 10-kΩ resistor - confirmed in Application Note SLOU060 and Electrical Characteristics table (VIH = 2 V, VIL = 0.4 V).
Can the TLV2621IDBVT be used with a 1.8-V supply?
No - the TLV2621IDBVT has a minimum recommended supply voltage of 2.7 V. At 1.8 V, it fails to meet specifications for bandwidth, slew rate, output swing, and input common-mode range; the device may not power up or operate predictably. For 1.8-V systems, consider the TLV278x family instead.
TLV2621IDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- 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:
- 7V/µs
- Gain Bandwidth Product:
- 11 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 800µA
- Current - Output / Channel:
- 28 mA
- Voltage - Supply Span (Min):
- 2.7 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
TLV2621IDBVT FAQ
1.How can I place an order for TLV2621IDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2621IDBVT 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 TLV2621IDBVT reliable?
The price and inventory of TLV2621IDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2621IDBVT is usually 5 days.
3.What payment methods are accepted for TLV2621IDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2621IDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2621IDBVT?
TLV2621IDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2621IDBVT 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 TLV2621IDBVT?
For technical support, including TLV2621IDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2621IDBVT requirements.
6.How does Aetrix verify that TLV2621IDBVT is sourced from the original manufacturer or authorized distributors?
All TLV2621IDBVT 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 TLV2621IDBVT meets industry standards.
7.What is the process for return or replacement of TLV2621IDBVT?
All TLV2621IDBVT units undergo pre-shipment inspection (PSI). If there is an issue with TLV2621IDBVT, 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 TLV2621IDBVT part is unused and in its original packaging.
Return procedure for TLV2621IDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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