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Texas Instruments TLV2451CDBVR
- Part No.:
- TLV2451CDBVR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV2451CDBVR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,800
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Product details
Overview
TLV2451CDBVR from Texas Instruments is a single-channel rail-to-rail input/output operational amplifier optimized for ultralow-power, low-voltage portable applications. It delivers 220 kHz gain-bandwidth, ±10 mA output drive, 23 µA supply current per channel, and operates from 2.7 V to 6 V - enabling high-precision signal conditioning in battery-powered medical sensors and data acquisition front-ends.
For engineers reviewing the TLV2451CDBVR datasheet, TLV2451CDBVR pinout, TLV2451CDBVR application, or TLV2451CDBVR equivalent, key selection criteria include its 5-pin SOT-23 package, shutdown-inactive design (no SHDN pin), rail-to-rail I/O swing at 3 V/5 V, and verified 20 µV typical input offset voltage across temperature.
Technical Context
The TLV2451CDBVR uses a CMOS input stage enabling rail-to-rail common-mode input range (0 V to VDD) and rail-to-rail output swing within 250 mV of each rail under 2.5 mA load. Its internal architecture supports stable unity-gain operation with 56° phase margin into 1 nF capacitive loads.
Unlike the TLV2450/3/5 variants, TLV2451CDBVR lacks a shutdown terminal and is specified only for the C-suffix (0°C to 70°C) temperature grade. It is fully characterized at both 3 V and 5 V supply, with PSRR of 106 dB and CMRR of 80 dB at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 6 V - supports direct connection to single-cell Li-ion (3.0–3.6 V) or two-cell alkaline (3–4.5 V) systems without regulation. |
| Gain-Bandwidth Product | 220 kHz - enables stable amplification of DC–20 kHz biosignals (e.g., ECG, pulse oximetry) with ≤1% gain error. |
| Input Offset Voltage (typ) | 20 µV - ensures ≤0.2 mV error in 100× gain sensor interfaces at room temperature. |
| Supply Current per Channel | 23 µA - allows >1-year battery life in coin-cell-powered wearable monitors with 10-second wake-up intervals. |
| Output Drive Capability | ±10 mA - drives 500 Ω loads directly, eliminating need for external buffer stages in analog front-ends. |
| Input Common-Mode Range | 0 V to VDD - accepts signals referenced to ground or VDD/2 in single-supply configurations without level-shifting. |
| Power Supply Rejection Ratio | 106 dB - rejects ripple on noisy shared power rails, critical in mixed-signal PCBs with digital switching noise. |
Pinout & Package
SOT-23-5 package (DBV): 2.9 mm × 1.6 mm × 1.15 mm body, gull-wing leads, tape-and-reel compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage swing; capable of sourcing/sinking ±10 mA into resistive loads. |
| 2 (IN−) | Inverting input | High-impedance CMOS node; supports precision feedback networks up to 10 MΩ without significant bias-current error. |
| 3 (GND) | Analog ground reference | Must be connected to clean system ground plane; separates analog return path from digital or power ground. |
| 4 (IN+) | Non-inverting input | Accepts input signals from 0 V to VDD; enables true single-supply instrumentation amplifier topologies. |
| 5 (VDD+) | Positive supply | Operates down to 2.7 V; no reverse-polarity protection - requires external diode if bidirectional supply risk exists. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in 3 V systems - e.g., 0–3 V ADC input scaling without level shifters. |
| Ultralow 23 µA supply current | Reduces quiescent power to 69 µW at 3 V, critical for always-on sensor nodes in energy-harvesting designs. |
| 220 kHz GBW with 0.11 V/µs slew rate | Supports accurate amplification of low-frequency physiological signals (e.g., respiration, EMG) with minimal phase lag. |
| 20 µV typical input offset voltage | Minimizes baseline drift in DC-coupled transducer interfaces such as strain-gauge bridges or thermopiles. |
| 106 dB PSRR and 80 dB CMRR | Ensures stable performance in noisy industrial or automotive environments where supply and common-mode interference are present. |
Applications
| Portable Medical Sensors | Patient Monitoring Front-Ends |
|---|---|
Use Scenario: Amplifying microvolt-level ECG signals from dry electrodes in handheld cardiac analyzers. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op-amp configured as non-inverting amplifier with 100× gain and 0.05–150 Hz bandpass filtering. Use Value: 20 µV offset and 23 µA current enable <1 µV baseline drift and >2-year CR2032 battery life in intermittent-use devices. | Use Scenario: Conditioning photodiode current from SpO₂ sensor in wrist-worn pulse oximeters. IC Role / Device Role / Timing Role: Transimpedance amplifier converting 10 nA–1 µA photocurrent to 0–3 V voltage with 220 kHz bandwidth. Use Value: ±10 mA output drive supports direct driving of anti-aliasing RC filters and 12-bit SAR ADC inputs without buffering. |
| Data Acquisition Channels | Low-Power Industrial Sensors |
Use Scenario: Signal conditioning for thermistor-based temperature measurement in battery-operated environmental loggers. IC Role / Device Role / Timing Role: Precision voltage follower and gain stage interfacing 10 kΩ NTC thermistor to 16-bit delta-sigma ADC. Use Value: Rail-to-rail I/O and 2.7 V minimum supply allow direct interface to 3.3 V MCU ADCs while maintaining full 0–100% measurement range. | Use Scenario: Amplifying bridge outputs from MEMS pressure sensors in smart HVAC transmitters. IC Role / Device Role / Timing Role: Instrumentation-grade amplifier with matched feedback resistors for 100× differential gain and offset nulling. Use Value: 106 dB PSRR rejects 50/60 Hz mains coupling and switching regulator noise in unshielded industrial enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2461CDCKR | Higher 550 µA supply current, 6.4 MHz GBW, 1.6 V/µs slew rate; same SOT-23-5 package. | Targeted at higher-speed signal chains (e.g., active filters, audio preamps); not suitable for multi-year battery life requirements. | Select when bandwidth >1 MHz is required and power budget allows ≥20× higher quiescent current. |
| OPA333AIDBVR | Zero-drift architecture, 17 µV max offset over temperature, 17 µA supply current; same SOT-23-5 footprint. | Better DC precision for long-term sensor calibration; lower noise (0.7 µVpp) but reduced 350 kHz GBW vs. TLV2451's 220 kHz. | Select for ultra-stable DC-coupled applications (e.g., precision weigh scales) where offset drift dominates error budget. |
Compared with TLV2451CDBVR, TLV2461CDCKR trades 24× higher supply current for 29× greater bandwidth, while OPA333AIDBVR reduces offset drift by >90% at the cost of 40% lower GBW - making TLV2451CDBVR optimal for cost-sensitive, battery-constrained, mid-bandwidth sensor interfaces.
Availability
TLV2451CDBVR is available at Aetrix Electronics and suitable for portable medical sensors, patient monitoring front-ends, and low-power data acquisition channels requiring stable component supply across extended production lifecycles.
Supply support for TLV2451CDBVR 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TLV245x family was designed specifically for ultralow-power, rail-to-rail signal conditioning in battery-operated medical and portable instrumentation - prioritizing supply current efficiency without sacrificing usable bandwidth or output drive.
FAQ
What is the operating temperature range for TLV2451CDBVR?
The TLV2451CDBVR is rated for 0°C to 70°C ambient operation (C-suffix). It is not qualified for industrial (−40°C to 125°C) or automotive temperature ranges. Full electrical specifications - including input offset voltage, supply current, and gain-bandwidth - are guaranteed across this 0°C to 70°C range per the TI SLOS218F datasheet.
Does TLV2451CDBVR have a shutdown pin?
No, TLV2451CDBVR does not include a shutdown (SHDN) pin. It is the non-shutdown variant in the TLV245x family. The TLV2450 and TLV2453 offer shutdown functionality in 6-pin and 10-pin packages respectively; TLV2451CDBVR uses a fixed 5-pin SOT-23 configuration with pins OUT, IN−, GND, IN+, and VDD+ only.
What is the maximum capacitive load TLV2451CDBVR can drive stably?
TLV2451CDBVR maintains 56° phase margin with up to 1 nF capacitive load when configured as a unity-gain follower (RL = 10 kΩ). For loads exceeding 100 pF, TI recommends adding a 10–100 Ω series resistor between the output and capacitive load to preserve stability - verified in Figure 24 of the SLOS218F datasheet.
Can TLV2451CDBVR operate from a 2.5 V supply?
No, TLV2451CDBVR has a minimum specified supply voltage of 2.7 V. Operation below 2.7 V is outside recommended conditions and may result in degraded parameters including reduced output swing, increased input offset voltage, and unstable biasing. Designs requiring 2.5 V operation should consider alternatives like the TLV9001 or OPA316.
What is the typical input bias current of TLV2451CDBVR at 25°C?
The typical input bias current of TLV2451CDBVR is 0.9 nA at 25°C and VDD = 3 V, as specified in the "Electrical Characteristics" table (page 5) of the SLOS218F datasheet. This low bias current minimizes voltage errors in high-impedance sensor interfaces, such as those using 1 MΩ feedback networks or piezoelectric elements.
TLV2451CDBVR 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:
- 0.11V/µs
- Gain Bandwidth Product:
- 220 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 500 pA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 23µA
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 6 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TLV2451CDBVR FAQ
1.How can I place an order for TLV2451CDBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2451CDBVR 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 TLV2451CDBVR reliable?
The price and inventory of TLV2451CDBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2451CDBVR is usually 5 days.
3.What payment methods are accepted for TLV2451CDBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2451CDBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2451CDBVR?
TLV2451CDBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2451CDBVR 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 TLV2451CDBVR?
For technical support, including TLV2451CDBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2451CDBVR requirements.
6.How does Aetrix verify that TLV2451CDBVR is sourced from the original manufacturer or authorized distributors?
All TLV2451CDBVR 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 TLV2451CDBVR meets industry standards.
7.What is the process for return or replacement of TLV2451CDBVR?
All TLV2451CDBVR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2451CDBVR, 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 TLV2451CDBVR part is unused and in its original packaging.
Return procedure for TLV2451CDBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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