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Texas Instruments TLV2451CDBVT
- Part No.:
- TLV2451CDBVT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV2451CDBVT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,767
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Product details
Overview
TLV2451CDBVT from Texas Instruments is a single-channel rail-to-rail input/output operational amplifier optimized for ultralow-power, low-voltage portable systems. 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 TLV2451CDBVT datasheet, TLV2451CDBVT pinout, TLV2451CDBVT application, or TLV2451CDBVT equivalent, key selection criteria include its 5-pin SOT-23 package, shutdown-incompatible design (no SHDN pin), rail-to-rail I/O swing at 3 V/5 V, and verified 20 µV typical input offset voltage under industrial temperature range (0°C to 70°C).
Technical Context
The TLV2451CDBVT employs a CMOS input stage with rail-to-rail common-mode input range (0 V to VDD) and rail-to-rail output swing within 250 mV of both rails under 2.5 mA load. Its internal architecture supports stable unity-gain operation with 56° phase margin into 1 nF capacitive loads and achieves 106 dB PSRR at DC.
Unlike the TLV2450/3/5 variants, TLV2451CDBVT lacks a shutdown terminal - confirmed by its 5-pin SOT-23 pinout (OUT, GND, IN+, VDD+, IN−) and absence of SHDN functionality in all electrical characteristics tables across VDD = 3 V and 5 V test conditions.
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 (3.0–3.7 V) or two-cell alkaline (3.0 V min) supplies without regulation. |
| Gain-Bandwidth Product | 220 kHz - enables stable amplification of DC–200 kHz signals in sensor interfaces with <1% gain error at 10 kHz. |
| Input Offset Voltage (typ) | 20 µV - ensures ≤0.2 mV output error in 100× gain configurations at room temperature. |
| Supply Current per Channel | 23 µA - allows >1-year battery life in coin-cell-powered devices operating at 100 Hz sampling rate. |
| Output Drive Capability | ±10 mA - drives 500 Ω loads directly, eliminating need for external buffer stages in analog front-ends. |
| Common-Mode Input Range | 0 V to VDD - accepts inputs down to ground or up to supply rail, simplifying level-shifting in single-supply systems. |
| Power Supply Rejection Ratio | 106 dB - suppresses supply ripple by >200,000×, critical for precision measurements in noisy embedded environments. |
Pinout & Package
TLV2451CDBVT is housed in a 5-pin SOT-23 package (DBV), measuring 2.9 mm × 1.6 mm × 1.1 mm, with gull-wing leads and RoHS-compliant matte tin lead finish.
| 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 (GND) | Analog ground reference | Primary return path for input bias currents and output load current; must be low-impedance. |
| 3 (IN+) | Noninverting input | CMOS input with 0.3 nA max bias current; accepts voltages from 0 V to VDD. |
| 4 (VDD+) | Positive supply | Accepts 2.7–6 V; internal ESD protection rated to ±2 kV HBM. |
| 5 (IN−) | Inverting input | Differential pair input; matched to IN+ for <20 µV offset and 80 dB CMRR at DC. |
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 sensor output digitized by 12-bit ADC without level-shifting. |
| Ultralow 23 µA supply current | Reduces quiescent power to 69 µW at 3 V, permitting integration into always-on wearable health monitors. |
| 220 kHz gain-bandwidth product | Supports closed-loop gains up to 22 at 10 kHz while maintaining phase margin >50° into 100 pF loads. |
| 20 µV typical input offset voltage | Minimizes calibration drift in precision thermistor or strain gauge amplifiers over 0°C–70°C operating range. |
| 106 dB PSRR | Preserves signal integrity when powered from shared switching regulator rails in multi-function IoT nodes. |
Applications
| Portable Medical Sensors | Patient Monitoring Systems |
|---|---|
Use Scenario: Amplifying microvolt-level ECG electrode signals in handheld cardiac analyzers. IC Role / Device Role / Timing Role: Single-supply instrumentation amplifier front-end with DC-coupled gain and rail-to-rail output swing. Use Value: 20 µV offset and 23 µA current enable >8-hour battery runtime and sub-mV baseline stability without trimming. | Use Scenario: Signal conditioning for SpO₂ photodiode current 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 minimal noise. Use Value: 49 nV/√Hz input noise and ±10 mA drive support 100 kΩ feedback resistors and direct ADC driving. |
| Data Acquisition Front-Ends | Low-Power Industrial Sensors |
Use Scenario: Buffering and scaling outputs from MEMS accelerometers in predictive maintenance edge nodes. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating high-impedance sensor output from multiplexer loading. Use Value: 56° phase margin ensures stability with 100 pF PCB trace capacitance; 220 kHz GBW supports 10 kHz sensor bandwidth. | Use Scenario: Amplifying RTD or thermocouple signals in battery-operated wireless temperature transmitters. IC Role / Device Role / Timing Role: Precision gain stage with 0–6 V output compliance matching 16-bit SAR ADC input range. Use Value: Rail-to-rail I/O and 106 dB PSRR maintain 16-bit ENOB despite unregulated 3.6 V Li-SOCl₂ supply ripple. |
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, same 5-pin SC70 package but not pin-compatible (different pinout: IN−/IN+/VDD+/OUT/GND vs TLV2451's OUT/GND/IN+/VDD+/IN−). | Targeted at higher-speed, higher-power applications like active filters or audio preamps - unsuitable for µA-level battery budgets. | Select TLV2461CDCKR only if bandwidth >1 MHz is required and 24× higher supply current is acceptable. |
| OPA348AIDBVR | 25 µA supply current, 1 MHz GBW, rail-to-rail I/O, identical 5-pin SOT-23 (DBV) package and pinout (OUT/GND/IN+/VDD+/IN−). | Offers 5× higher bandwidth and lower 10 µV max offset, but requires tighter layout for stability due to higher slew rate (0.5 V/µs). | Choose OPA348AIDBVR when 1 MHz bandwidth is needed and PCB layout can accommodate improved decoupling and shorter traces. |
Compared with TLV2451CDBVT, TLV2461CDCKR trades 24× higher current for 29× more bandwidth but requires PCB redesign due to non-pin-compatible pinout; OPA348AIDBVR matches the DBV pinout and adds bandwidth with only +2 µA current penalty, making it the preferred upgrade where speed matters.
Availability
TLV2451CDBVT is available at Aetrix Electronics and suitable for portable medical sensors, patient monitoring systems, data acquisition front-ends, and low-power industrial sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2451CDBVT 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, specializing in analog and embedded processing solutions with leadership in low-power signal chain products.
The TLV245x family was designed specifically for ultralow-power, rail-to-rail precision amplification in battery-operated medical, industrial, and portable instrumentation - prioritizing µA-level current draw without sacrificing ac performance or output drive.
FAQ
Does TLV2451CDBVT include a shutdown feature?
No, TLV2451CDBVT does not have a shutdown function. Unlike TLV2450/3/5 variants, it uses a 5-pin SOT-23 package with no dedicated SHDN pin. Electrical specifications confirm shutdown current (IDD(SHDN)) is not characterized for TLV2451CDBVT in the datasheet, and its pinout diagram explicitly omits any shutdown terminal. The TLV2451CDBVT remains fully operational whenever VDD is applied.
What is the maximum output current capability of TLV2451CDBVT?
The TLV2451CDBVT provides ±10 mA output current drive capability at VDD = 5 V, as specified in the Electrical Characteristics table under "Output current" parameter. This is measured with VO = 0.5 V from either rail and ensures reliable operation into 500 Ω loads. At VDD = 3 V, output current remains ≥±4 mA, supporting direct interface to most 12-bit SAR ADC inputs and low-power transducers.
Is TLV2451CDBVT pin-compatible with other TLV245x variants in SOT-23 packages?
No, TLV2451CDBVT is not pin-compatible with TLV2450CDBV (6-pin SOT-23 with SHDN) or TLV2452/3 in MSOP. Its 5-pin SOT-23 pinout (OUT/GND/IN+/VDD+/IN−) is unique within the family. Substituting TLV2451CDBVT for TLV2450CDBV would leave the SHDN pin unconnected and require PCB trace modifications - confirming it is a distinct, non-drop-in variant optimized for simplicity and cost in single-amplifier roles.
What is the input offset voltage specification for TLV2451CDBVT over temperature?
The TLV2451CDBVT has a typical input offset voltage of 20 µV at 25°C and a maximum of 1300 µV across the full 0°C to 70°C operating range (C-suffix). Its temperature coefficient is 0.3 µV/°C, meaning offset drift contributes ≤0.3 µV per °C change - resulting in <200 µV additional drift over the full range. This is verified in the Electrical Characteristics table under "TLV245xA" grade conditions.
Can TLV2451CDBVT operate from a 2.7 V supply while maintaining rail-to-rail output swing?
Yes, TLV2451CDBVT maintains rail-to-rail output swing down to 2.7 V supply, delivering output within 250 mV of each rail while driving a 2.5 mA load - as confirmed in the device description and Operating Characteristics tables. At 2.7 V, it achieves ≥±4 mA output current and retains 200 kHz gain-bandwidth, enabling full functionality in energy-harvesting and single-cell battery systems where supply voltage sags below 3 V.
TLV2451CDBVT 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
TLV2451CDBVT FAQ
1.How can I place an order for TLV2451CDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2451CDBVT 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 TLV2451CDBVT reliable?
The price and inventory of TLV2451CDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2451CDBVT is usually 5 days.
3.What payment methods are accepted for TLV2451CDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2451CDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2451CDBVT?
TLV2451CDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2451CDBVT 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 TLV2451CDBVT?
For technical support, including TLV2451CDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2451CDBVT requirements.
6.How does Aetrix verify that TLV2451CDBVT is sourced from the original manufacturer or authorized distributors?
All TLV2451CDBVT 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 TLV2451CDBVT meets industry standards.
7.What is the process for return or replacement of TLV2451CDBVT?
All TLV2451CDBVT units undergo pre-shipment inspection (PSI). If there is an issue with TLV2451CDBVT, 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 TLV2451CDBVT part is unused and in its original packaging.
Return procedure for TLV2451CDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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