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Texas Instruments TLV2451CP
- Part No.:
- TLV2451CP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLV2451CP.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,407
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Product details
Overview
TLV2451CP 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, 23 µA supply current per channel, ±10 mA output drive, 20 µV typical input offset voltage, and operates from 2.7 V to 6 V - enabling high-precision signal conditioning in battery-powered medical sensors and patient monitoring front-ends.
For engineers reviewing the TLV2451CP datasheet, TLV2451CP pinout, TLV2451CP application, or TLV2451CP equivalent, this page provides verified electrical specifications, SOT-23-5 package layout, real-world use cases in data acquisition and low-voltage analog sensing, and validated alternative op-amps with documented functional trade-offs.
Technical Context
The TLV2451CP employs 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 220 kHz gain-bandwidth product and 0.11 V/µs slew rate support stable unity-gain buffer and low-frequency instrumentation configurations.
It features no shutdown pin (unlike TLV2450/3/5), operates across 0°C to 70°C (C-suffix), and is fully specified at both 3 V and 5 V supply - making it suitable for single-supply industrial and portable applications where quiescent current and dynamic range are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 23 µA/channel - enables multi-year battery life in always-on sensor nodes |
| Gain-Bandwidth Product | 220 kHz - supports stable DC-coupled amplification up to ~100 kHz with gain ≥ 2 |
| Input Offset Voltage | 20 µV (typ) - ensures < 0.1% error in 200 mV full-scale medical sensor outputs |
| Output Drive | ±10 mA - drives 500 Ω loads directly without external buffers |
| Rail-to-Rail I/O | Inputs: 0 V to VDD; Outputs: within 250 mV of rails @ 2.5 mA - maximizes dynamic range at 3 V supply |
| PSRR | 106 dB - rejects power supply noise in noisy embedded environments |
| Operating Voltage | 2.7 V to 6 V - compatible with Li-ion, 3.3 V, and dual-cell alkaline supplies |
Pinout & Package
TLV2451CP is housed in an 8-pin plastic DIP (PDIP) package with 0.300-inch body width and standard through-hole footprint. Pin 1 is identified by a beveled edge or molded "U" shape.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (1IN−) | Differential input node; high-impedance CMOS input (10⁹ Ω) |
| 2 | Non-Inverting Input (1IN+) | Differential input node; accepts signals from 0 V to VDD |
| 3 | Output (1OUT) | Push-pull output capable of sourcing/sinking ±10 mA |
| 4 | GND | Analog ground reference; must be low-impedance return path |
| 5 | VDD+ | Positive supply terminal; accepts 2.7 V to 6 V |
| 6–8 | NC | No internal connection; left unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full utilization of 3 V supply range in single-ended sensor interfaces |
| 23 µA supply current per channel | Reduces system-level power budget by >90% vs. standard precision op-amps |
| 220 kHz GBW with 0.11 V/µs slew rate | Supports accurate low-frequency amplification (e.g., ECG, temperature) without instability |
| 20 µV typical input offset voltage | Minimizes DC error in high-gain transducer signal chains (e.g., strain gauges) |
| 106 dB PSRR | Maintains accuracy in systems sharing noisy digital power rails |
Applications
| Portable Medical Sensors | Patient Monitoring Front-Ends |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals (e.g., ECG, EMG) from dry electrodes in wearable patches. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier stage with rail-to-rail input to capture near-zero baseline signals. Use Value: 20 µV offset and 23 µA quiescent current enable sub-0.5% gain error and multi-week battery life. | Use Scenario: Signal conditioning for SpO₂ photodiode current in compact pulse oximeters. IC Role / Device Role / Timing Role: Transimpedance amplifier with rail-to-rail output driving 12-bit SAR ADC reference range. Use Value: ±10 mA drive capability eliminates need for output buffer; 220 kHz GBW supports fast LED modulation cycles. |
| Data Acquisition Systems | Low-Power Industrial Sensors |
Use Scenario: Analog front-end for 16-bit delta-sigma ADC in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Programmable-gain amplifier (PGA) buffer with matched input bias for ratiometric sensor scaling. Use Value: 10⁹ Ω input resistance and rail-to-rail input preserve sensor sensitivity across 0–3 V supply range. | Use Scenario: Signal conditioning for thermistor or RTD bridges in wireless condition-monitoring nodes. IC Role / Device Role / Timing Role: Low-drift, low-power differential amplifier feeding ultra-low-power MCU ADC. Use Value: 0.3 µV/°C offset drift ensures < 0.2°C error over −20°C to 70°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2461CP | Higher supply current (550 µA), 6.4 MHz GBW, same RRIO, 8-pin PDIP | Better AC performance but 24× higher IDD - unsuitable for battery-critical designs | Select TLV2461CP only when bandwidth >1 MHz is required and power budget allows |
| OPA344PA | 250 µA IDD, 1 MHz GBW, rail-to-rail output only (not input), SO-8 package | Lacks rail-to-rail input - cannot handle 0 V common-mode in single-supply sensor interfaces | Choose OPA344PA only for non-zero-input applications where higher speed justifies increased current |
Compared with TLV2451CP, TLV2461CP trades 24× higher supply current for 29× greater bandwidth, while OPA344PA sacrifices rail-to-rail input capability for moderate speed improvement - making TLV2451CP uniquely suited for ultra-low-power, full-range DC signal conditioning.
Availability
TLV2451CP is available at Aetrix Electronics and suitable for portable medical devices, patient monitoring systems, and low-power data acquisition requiring stable component supply across extended production lifecycles.
Supply support for TLV2451CP 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, sensor, and portable instrumentation applications - prioritizing supply current, input/output voltage range, and precision at sub-100 µA levels.
FAQ
What is the maximum operating temperature range for TLV2451CP?
The TLV2451CP carries the 'C' temperature suffix, specifying operation from 0°C to 70°C. This range is validated per TI's SLOS218F datasheet and applies across all electrical parameters including input offset voltage, supply current, and gain-bandwidth product. It does not support industrial or extended temperature grades - for −40°C to 125°C operation, consider TLV2451IP instead.
Does TLV2451CP include a shutdown pin?
No, TLV2451CP does not include a shutdown pin. Unlike TLV2450, TLV2453, and TLV2455 variants, the TLV2451CP is a fixed-function single op-amp without enable/shutdown control. Its supply current remains at 23 µA continuously during operation. If system-level power gating is required, external FET control of VDD or use of TLV2450CP (which has SHDN) is necessary.
What is the output voltage swing capability of TLV2451CP at 3 V supply?
At VDD = 3 V, TLV2451CP delivers rail-to-rail output swing within 250 mV of each rail when sourcing or sinking 2.5 mA, per the datasheet's "Output Drive Capability" specification. This means VOH ≥ 2.75 V and VOL ≤ 0.25 V under that load - enabling >90% utilization of the 3 V supply range for analog signal fidelity.
Can TLV2451CP operate from a 2.5 V supply?
No, TLV2451CP has a minimum recommended supply voltage of 2.7 V per the "Recommended Operating Conditions" table in SLOS218F. Operation below 2.7 V may result in degraded parameters including reduced output drive, increased input offset voltage, and potential instability. For 2.5 V systems, consider TI's TLV2371 or similar 2.2 V–5.5 V rail-to-rail op-amps.
Is TLV2451CP pin-compatible with other TLV245x family members in PDIP packages?
Yes, TLV2451CP shares identical 8-pin PDIP pinout (1IN−, 1IN+, 1OUT, GND, VDD+, NC, NC, NC) with TLV2452CP and TLV2454CP. However, TLV2450CP and TLV2453CP differ due to inclusion of shutdown pins. Always verify pin function mapping against the specific device's "PACKAGE PINOUTS" diagram - TLV2451CP has no shutdown functionality and three NC pins (6–8).
TLV2451CP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Bulk
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLV2451CP FAQ
1.How can I place an order for TLV2451CP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2451CP 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 TLV2451CP reliable?
The price and inventory of TLV2451CP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2451CP is usually 5 days.
3.What payment methods are accepted for TLV2451CP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2451CP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2451CP?
TLV2451CP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2451CP 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 TLV2451CP?
For technical support, including TLV2451CP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2451CP requirements.
6.How does Aetrix verify that TLV2451CP is sourced from the original manufacturer or authorized distributors?
All TLV2451CP 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 TLV2451CP meets industry standards.
7.What is the process for return or replacement of TLV2451CP?
All TLV2451CP units undergo pre-shipment inspection (PSI). If there is an issue with TLV2451CP, 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 TLV2451CP part is unused and in its original packaging.
Return procedure for TLV2451CP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLV2451CP Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
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LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
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