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Texas Instruments TLV2621IDR
- Part No.:
- TLV2621IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2621IDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,086
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Product details
Overview
TLV2621IDR from Texas Instruments is a single-channel, rail-to-rail output CMOS operational amplifier optimized for low-power, wide-bandwidth single-supply operation. It delivers 11 MHz gain-bandwidth, 10 V/µs slew rate, and 27 nV/√Hz input voltage noise while consuming only 800 µA per channel at 2.7–5.5 V supply. Its input common-mode range extends to the positive rail (VICR = 1 V to VDD + 0.2 V), enabling direct interfacing with high-side-referenced sensors in battery-powered data acquisition systems.
For engineers reviewing the TLV2621IDR datasheet, TLV2621IDR pinout, TLV2621IDR application, or TLV2621IDR equivalent, this device is selected for precision signal conditioning in Li-ion powered instrumentation where rail-to-rail output swing, ultralow shutdown current (4 µA/channel), and industrial-grade temperature operation (−40°C to 125°C) are critical design requirements.
Technical Context
The TLV2621IDR employs a CMOS input stage with rail-to-rail output architecture, supporting single-supply operation from 2.7 V to 5.5 V. Its input common-mode range includes the positive rail, allowing direct connection to VDD-referenced sources without level-shifting circuitry.
It features an integrated shutdown function (SHDN pin) that reduces supply current to 4 µA/channel while maintaining fast turn-on (≤4.5 µs) and turn-off (≤200 ns) times. The amplifier achieves stable unity-gain operation with 63° phase margin into 2 kΩ//10 pF loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain-bandwidth product | 11 MHz - supports stable unity-gain buffer configurations up to ~10 MHz signal bandwidth |
| Slew rate | 10 V/µs - enables accurate reproduction of 1-Vpp signals up to ~1.6 MHz without slew-induced distortion |
| Supply current per channel | 800 µA - allows continuous operation in microcontroller-based systems powered by coin cells or Li-ion batteries |
| Input voltage noise | 27 nV/√Hz at 10 kHz - suitable for amplifying low-level sensor outputs (e.g., thermocouples, strain gauges) without significant noise degradation |
| Shutdown supply current | 4 µA/channel - reduces system standby power by >99% versus active mode, critical for always-on monitoring nodes |
| Common-mode input range | 1 V to VDD + 0.2 V - permits direct interface to VDD-referenced transducers and ADC reference buffers |
| Operating temperature | −40°C to 125°C - qualified for under-hood automotive, industrial motor control, and outdoor IoT edge nodes |
Pinout & Package
TLV2621IDR is housed in an 8-pin SOIC (D) package with standard 1.27-mm pitch and 3.91-mm body width. Pin 1 is located at the top-left corner adjacent to the molded dot indicator.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input (IN−) | Differential input node; connects to feedback network in inverting configurations |
| 2 | Non-inverting input (IN+) | Differential input node; accepts high-impedance sensor or reference signals |
| 3 | Output (OUT) | Rail-to-rail output capable of sourcing/sinking ±28 mA; drives 2-kΩ loads to within 200 mV of rails |
| 4 | Ground (GND) | Analog ground reference; must be tied to system AGND plane with low-impedance path |
| 5 | Shutdown (SHDN) | Active-low enable: <0.4 V disables amplifier (IDD = 4 µA); >2 V enables normal operation |
| 6 | Positive supply (VDD) | Single supply input: operates from 2.7 V to 5.5 V; decoupling capacitor required at pin |
| 7 | No connect (NC) | Internally unconnected; must remain floating or tied to GND per layout guidelines |
| 8 | No connect (NC) | Internally unconnected; must remain floating or tied to GND per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Drives loads to within 200 mV of VDD and GND at ±10 mA, maximizing dynamic range in 3.3-V systems |
| Positive-rail–inclusive input range | Accepts inputs up to VDD + 0.2 V, eliminating need for external level shifters when interfacing with DACs or voltage references |
| Ultralow shutdown current | 4 µA/channel ensures <1 µW standby power consumption-critical for energy-harvesting and battery-life–constrained designs |
| Wide supply voltage range | 2.7–5.5 V compatibility enables direct use with Li-ion (3.0–4.2 V), USB (5 V), and low-voltage microcontrollers (e.g., MSP430) |
| Industrial temperature grade | Specified performance over −40°C to 125°C ensures reliability in automotive engine control units and factory automation PLCs |
Applications
| Portable Data Loggers | Automotive Cabin Sensors |
|---|---|
Use Scenario: Amplifying low-level analog outputs from MEMS accelerometers and humidity sensors in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Precision signal conditioner with rail-to-rail output driving 12-bit SAR ADC inputs. Use Value: 27 nV/√Hz noise floor preserves SNR in sub-100-µV sensor signals; 800 µA quiescent current extends 10-year battery life in sealed enclosures. |
Use Scenario: Signal conditioning for seat occupancy detection using capacitive sensing electrodes near vehicle HVAC ducts. IC Role / Device Role / Timing Role: High-impedance buffer and gain stage for capacitance-to-voltage conversion circuits. Use Value: Input common-mode range extending to VDD + 0.2 V allows direct connection to 5-V reference rails; −40°C to 125°C rating ensures operation across cabin temperature extremes. |
| Medical Wearables | Industrial Process Transmitters |
Use Scenario: Front-end amplification of ECG electrode signals in compact, rechargeable heart-rate monitors. IC Role / Device Role / Timing Role: Low-noise, low-power instrumentation amplifier stage preceding anti-alias filtering. Use Value: 11-MHz GBW supports clean amplification of 100-Hz biopotential signals with minimal phase lag; shutdown mode cuts system idle power by >99% during sleep cycles. |
Use Scenario: Isolated 4–20 mA loop transmitter front-end for pressure and flow sensors in hazardous-area process plants. IC Role / Device Role / Timing Role: Sensor excitation buffer and signal conditioning amplifier in HART-compatible smart transmitters. Use Value: 2.7-V minimum supply enables operation from loop-powered 3.3-V LDOs; 125°C rating supports mounting directly on hot pipe flanges without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2621IDBV | Same electrical specs but in 5-pin SOT-23 (DBV) package; no NC pins; smaller footprint (2.9 × 1.6 mm vs SOIC's 4.9 × 3.9 mm) | Better suited for space-constrained PCBs; lacks SHDN pin (no shutdown capability) | Select TLV2621IDBV only if board area is critical and shutdown functionality is unnecessary |
| OPA333AIDBVR | Zero-drift architecture; 0.1 µV/°C offset drift vs TLV2621IDR's 3 µV/°C; higher 350-µA supply current; no shutdown pin | Superior DC accuracy for precision weigh scales and medical diagnostics; lower bandwidth (350 kHz) | Choose OPA333AIDBVR when long-term offset stability dominates over speed and power; avoid when >1-MHz signal bandwidth or shutdown is required |
Compared with TLV2621IDR, TLV2621IDBV sacrifices shutdown control for miniaturization, while OPA333AIDBVR trades bandwidth and power efficiency for ultra-low drift-making TLV2621IDR the optimal balance for wideband, low-power, industrial-grade signal chains requiring dynamic power management.
Availability
TLV2621IDR is available at Aetrix Electronics and suitable for portable instrumentation, automotive cabin electronics, and industrial process transmitters requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TLV2621IDR 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 amplifiers and low-power signal-chain solutions.
The TLV262x family was designed specifically for battery-operated, high-resolution data acquisition systems requiring rail-to-rail output, wide bandwidth, and ultralow shutdown current-targeting applications from portable medical devices to automotive sensor interfaces.
FAQ
What is the maximum load capacitance TLV2621IDR can drive while maintaining stability?
The TLV2621IDR maintains 63° phase margin with a 10-pF capacitive load at unity gain into a 2-kΩ resistor. Driving >10 pF requires external compensation (e.g., series R-C network at output) or reduction of closed-loop gain to preserve stability-verified in Figure 16 of the TLV2621IDR datasheet.
Does TLV2621IDR support dual-supply operation?
Yes, TLV2621IDR supports split supplies from ±1.35 V to ±2.75 V, as specified in the Recommended Operating Conditions table. This enables use in legacy bipolar signal chains while retaining rail-to-rail output swing relative to the chosen negative rail.
How does the shutdown feature affect output state in TLV2621IDR?
When TLV2621IDR is disabled via the SHDN pin (<0.4 V), the output enters high-impedance (Hi-Z) state-neither sourcing nor sinking current. This prevents loading of downstream circuitry and avoids unintended biasing in multiplexed or shared-bus signal paths.
What is the typical input bias current of TLV2621IDR at 25°C?
The typical input bias current of TLV2621IDR is 2 pA at 25°C, with a maximum of 50 pA across the full −40°C to 125°C temperature range. This ultra-low value minimizes voltage errors in high-impedance sensor interfaces such as photodiode transimpedance amplifiers.
Can TLV2621IDR operate reliably from a single 3.3-V supply?
Yes, TLV2621IDR is fully specified for 3.3-V operation: it delivers 11-MHz GBW, 10-V/µs slew rate, and rail-to-rail output swing with 800-µA supply current. Its 2.7-V minimum supply ensures robust performance even as Li-ion cells discharge to 3.0 V.
TLV2621IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 8-SOIC
TLV2621IDR FAQ
1.How can I place an order for TLV2621IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2621IDR 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 TLV2621IDR reliable?
The price and inventory of TLV2621IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2621IDR is usually 5 days.
3.What payment methods are accepted for TLV2621IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2621IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2621IDR?
TLV2621IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2621IDR 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 TLV2621IDR?
For technical support, including TLV2621IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2621IDR requirements.
6.How does Aetrix verify that TLV2621IDR is sourced from the original manufacturer or authorized distributors?
All TLV2621IDR 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 TLV2621IDR meets industry standards.
7.What is the process for return or replacement of TLV2621IDR?
All TLV2621IDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2621IDR, 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 TLV2621IDR part is unused and in its original packaging.
Return procedure for TLV2621IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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