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Texas Instruments TLV2451CDR
- Part No.:
- TLV2451CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2451CDR.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,933
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Product details
Overview
TLV2451CDR 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, and 23 µA supply current per channel across 2.7 V to 6 V operation - enabling precision signal conditioning in battery-powered medical sensors and data acquisition front-ends.
For engineers reviewing the TLV2451CDR datasheet, TLV2451CDR pinout, TLV2451CDR application, or TLV2451CDR equivalent, this page provides verified electrical specifications, SOT-23-5 package layout, real-world use cases in patient monitoring and sensor interfaces, and two validated alternative op-amps with documented functional trade-offs.
Technical Context
The TLV2451CDR employs a CMOS input stage enabling rail-to-rail input common-mode range (0 V to VDD) and rail-to-rail output swing within 250 mV of each rail under 2.5 mA load. Its 220 kHz gain-bandwidth product and 0.11 V/µs slew rate support stable unity-gain buffering and low-frequency amplification without phase reversal.
It operates across −40°C to 125°C with guaranteed performance at 3 V and 5 V, featuring 106 dB PSRR and 89 dB CMRR at mid-supply. Input offset voltage is specified at 20 µV (typ), with 0.3 µV/°C drift, making it suitable for high-accuracy DC-coupled sensing where thermal stability matters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 6 V - supports single-cell Li-ion (3.0–3.7 V) and dual-cell alkaline (3.0–4.5 V) battery systems without regulation. |
| Gain-Bandwidth Product | 220 kHz - enables stable amplification up to ~100 kHz for sensor signals while maintaining >60° phase margin with 10 kΩ || 100 pF loads. |
| Supply Current per Channel | 23 µA - allows continuous operation for years on coin-cell batteries in wearable health monitors. |
| Input Offset Voltage | 20 µV (typ) - reduces DC error to <1 mV in 50× gain stages, critical for ECG and temperature bridge amplifiers. |
| Output Drive Capability | ±10 mA - drives 500 Ω loads directly, eliminating need for external buffers in analog front-end (AFE) designs. |
| Rail-to-Rail I/O | Inputs accept 0 V to VDD; outputs swing to within 250 mV of rails at 2.5 mA - maximizes dynamic range in 3.3 V ADC interfaces. |
| PSRR / CMRR | 106 dB PSRR, 89 dB CMRR - rejects power rail noise and common-mode interference in noisy industrial sensor nodes. |
Pinout & Package
TLV2451CDR is housed in a 5-pin SOT-23 (DBV) package - compact (2.9 mm × 1.6 mm), surface-mount, tape-and-reel compatible (R suffix denotes reel packaging). Pin 1 is marked by a beveled edge or molded dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Delivers rail-to-rail voltage with ±10 mA sourcing/sinking capability; connects directly to ADC input or filter network. |
| 2 (GND) | Analog ground reference | Must be tied to clean system ground plane; separates analog return from digital or power grounds to minimize noise coupling. |
| 3 (IN+) | Non-inverting input | High-impedance CMOS node (10⁹ Ω); accepts signals from resistive sensors, thermistors, or photodiode transimpedance outputs. |
| 4 (VDD+) | Positive supply | Accepts 2.7–6 V; bypass capacitor (0.1 µF ceramic) required within 2 mm for stability and PSRR optimization. |
| 5 (IN−) | Inverting input | Used in closed-loop configurations (e.g., inverting amp, transimpedance); matched to IN+ for minimal input bias current error. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3.3 V ADC reference range without level-shifting circuitry or supply headroom loss. |
| 23 µA supply current per channel | Reduces quiescent power to 76 µW at 3.3 V - ideal for always-on biosignal acquisition in hearables and patch monitors. |
| 220 kHz GBW with 0.11 V/µs slew rate | Supports accurate amplification of ECG (0.05–150 Hz), pulse oximetry (DC–10 Hz), and thermistor linearization signals. |
| 106 dB PSRR at DC | Maintains signal integrity when powered from noisy switching regulators or shared LDOs in multi-rail embedded systems. |
| Specified from −40°C to 125°C | Validates performance in automotive cabin modules, industrial field transmitters, and outdoor environmental sensors. |
Applications
| Portable ECG Monitor | Industrial Temperature Sensor Interface |
|---|---|
|
Use Scenario: Amplifying microvolt-level differential signals from Ag/AgCl electrodes in battery-powered wearable ECG patches. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail instrumentation amplifier stage with DC-coupled gain of 100× before 24-bit sigma-delta ADC. Use Value: 20 µV offset and 23 µA supply current enable sub-1 µV RMS input-referred noise and >5-year battery life on CR2032. |
Use Scenario: Conditioning output from platinum RTD (PT100) bridges in factory-floor temperature transmitters operating at 3.3 V. IC Role / Device Role / Timing Role: Low-drift, low-power buffer and excitation current sense amplifier in 4-wire Kelvin configuration. Use Value: 0.3 µV/°C offset drift and 89 dB CMRR suppress lead resistance errors and common-mode noise from 24 V solenoid switching. |
| Low-Power Data Acquisition Front-End | Wearable Pulse Oximeter Analog Signal Chain |
|
Use Scenario: Multiplexed sensor hub aggregating pH, dissolved oxygen, and conductivity measurements in handheld water quality meters. IC Role / Device Role / Timing Role: Programmable-gain amplifier (PGA) input stage with rail-to-rail swing into SAR ADC reference domain. Use Value: 220 kHz GBW ensures <1 LSB settling for 1 MSPS 12-bit ADC sampling; 2.7 V min supply enables direct connection to buck-boost regulator output. |
Use Scenario: Dual-channel synchronous amplification of red (660 nm) and infrared (940 nm) photodiode currents in wrist-worn SpO₂ sensors. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) with 500 kΩ feedback resistor and 3.3 V single supply. Use Value: ±10 mA output drive handles LED sink current during active measurement; 23 µA IDD extends runtime between charges in Bluetooth LE-enabled devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA316IDBVR | Higher GBW (10 MHz), higher supply current (400 µA), same SOT-23-5 package | Better for AC-coupled audio or fast sensor signals; unsuitable for multi-year battery life requirements | Select when bandwidth >1 MHz is needed and power budget allows ≥17× higher IDD |
| MCP6001UT-E/OT | Lower GBW (1 MHz), lower supply current (9 µA), same rail-to-rail I/O and SOT-23-5 | Optimized for ultra-low-power but sacrifices AC performance; not recommended for >10 kHz signal fidelity | Select when priority is minimum quiescent power and gain-bandwidth ≤1 MHz suffices |
Compared with TLV2451CDR, OPA316IDBVR trades 17× higher supply current for 45× greater bandwidth, while MCP6001UT-E/OT cuts supply current by 61% but reduces GBW by 77% - making TLV2451CDR the optimal balance for precision, low-frequency, battery-constrained applications.
Availability
TLV2451CDR is available at Aetrix Electronics and suitable for portable medical equipment, industrial sensor interfaces, and low-power data acquisition systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature and voltage ranges.
Supply support for TLV2451CDR 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 op-amps and low-power signal chain solutions.
The TLV245x family was designed specifically for ultralow-power, rail-to-rail operational amplification in battery-operated medical, industrial, and portable instrumentation - prioritizing supply current efficiency without sacrificing DC accuracy or output drive.
FAQ
What is the maximum operating temperature range for TLV2451CDR?
The TLV2451CDR is rated for operation from −40°C to 125°C (I-suffix grade), with full electrical specifications guaranteed across this extended industrial temperature range. This makes TLV2451CDR suitable for under-hood automotive sensors, factory-floor transmitters, and outdoor environmental monitoring hardware where ambient temperatures exceed standard commercial limits.
Does TLV2451CDR include a shutdown pin?
No, TLV2451CDR does not include a shutdown pin. The TLV2450 and TLV2453 variants feature shutdown functionality, but TLV2451CDR is the single-channel non-shutdown version in the family. Its 23 µA supply current per channel is already optimized for continuous low-power operation, eliminating the need for external enable control in many always-on applications.
What is the typical input offset voltage of TLV2451CDR at 25°C?
The typical input offset voltage of TLV2451CDR is 20 µV at 25°C, with a maximum of 1300 µV over the full −40°C to 125°C temperature range. This low offset, combined with a temperature coefficient of only 0.3 µV/°C, ensures minimal DC error drift in precision sensor amplification circuits using TLV2451CDR.
Can TLV2451CDR drive a 500 Ω load rail-to-rail?
TLV2451CDR can source and sink ±10 mA, allowing it to drive a 500 Ω load with ±5 V swing - but only when supplied with ≥5 V. At 3.3 V supply, its output swings to within ~250 mV of each rail under 2.5 mA load; driving 500 Ω (6.6 mA at 3.3 V) will compress the output range. For full rail-to-rail swing into 500 Ω at 3.3 V, consider pairing TLV2451CDR with an external buffer or selecting a higher-output-current op-amp.
Is TLV2451CDR pin-compatible with other SOT-23-5 op-amps like MCP6001?
TLV2451CDR uses the industry-standard SOT-23-5 pinout (OUT, GND, IN+, VDD, IN−), matching MCP6001UT-E/OT, LMV321IDBVR, and TLV9001IDBVR. However, functional compatibility requires verification of supply range, bandwidth, and output drive - TLV2451CDR's 220 kHz GBW and ±10 mA drive differ significantly from MCP6001's 1 MHz GBW and ±13 mA, so direct substitution may affect loop stability or settling time.
TLV2451CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- 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:
- 8-SOIC
TLV2451CDR FAQ
1.How can I place an order for TLV2451CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2451CDR 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 TLV2451CDR reliable?
The price and inventory of TLV2451CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2451CDR is usually 5 days.
3.What payment methods are accepted for TLV2451CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2451CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2451CDR?
TLV2451CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2451CDR 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 TLV2451CDR?
For technical support, including TLV2451CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2451CDR requirements.
6.How does Aetrix verify that TLV2451CDR is sourced from the original manufacturer or authorized distributors?
All TLV2451CDR 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 TLV2451CDR meets industry standards.
7.What is the process for return or replacement of TLV2451CDR?
All TLV2451CDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2451CDR, 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 TLV2451CDR part is unused and in its original packaging.
Return procedure for TLV2451CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV2451CDR Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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