Texas Instruments TLV2451IDBVR

TLV2451IDBVR Op-Amp Product Summary

The TLV2451IDBVR is part of Texas Instruments’ TLV245x family of general-purpose, rail-to-rail operational amplifiers. Designed for ultra-low-power applications, the TLV2451IDBVR delivers a compelling combination of high performance and extremely low supply current. The device features a single operational amplifier channel within a compact SOT-23-5 package, providing engineers with a flexible solution for space-constrained and portable electronics.

This amplifier is well-suited for applications requiring both operation at low supply voltages (as low as 2.7 V) and wide input/output dynamic ranges. Its rail-to-rail input and output capabilities further extend signal processing flexibility, enabling full utilization of available supply voltage in battery-powered and energy-sensitive equipment.

Main Attributes and Advantages of TLV2451IDBVR

The TLV2451IDBVR stands out for its optimal balance of low supply current and solid analog performance. Major features include:

Ultra-low supply current of 23 μA per channel, minimizing power consumption in always-on, battery-powered systems.

Rail-to-rail input and output (RRIO), allowing accurate signal amplification close to both supply rails and maximizing dynamic range.

Gain-bandwidth product of 220 kHz, which is significantly higher than many amplifiers in the same current class, enabling robust signal acquisition in slow to moderate-speed applications.

Wide supply voltage range from 2.7 V to 6 V, compatible with both low-voltage digital logic and higher-voltage analog circuits.

Enhanced output drive, with the ability to source and sink up to ±10 mA, addressing common limitations in older micropower rail-to-rail operational amplifiers.

Industrial temperature range operation from –40°C to +125°C, supporting deployment in demanding environments.

These features collectively make the TLV2451IDBVR an excellent fit for portable medical equipment, patient monitoring, and data acquisition systems where both power efficiency and analog performance are essential.

TLV2451IDBVR Electrical Specifications and Performance

Thorough understanding of the TLV2451IDBVR’s electrical parameters is critical in precision analog designs:

Input offset voltage is typically 300 μV (maximum 1.5 mV), ensuring low error accumulation in sensitive measurements.

Input bias current stands at 0.9 nA (typical at 3 V supply, 25°C), supporting high-impedance sensor interfaces with minimal loading.

Common-mode rejection ratio (CMRR) sits around 80 dB (typical), promoting accurate amplification even in the presence of power supply fluctuations or external noise.

Power supply rejection ratio (PSRR) reaches 106 dB (typical at 3 V to 5 V), maintaining output stability as supply conditions change.

Output voltage swing approaches both rails—within 90 mV of ground and 2.95 V (at a 3 V supply), or 70 mV and 4.97 V (at a 5 V supply) with 500 μA load, accommodating a wide range of input signals in low-voltage systems.

Slew rate is 0.11 V/μs, supporting clean signal transitions in low-frequency pulse or control applications.

With a shutdown mode available on some family members, total quiescent current can be reduced to 16 nA per channel; however, the TLV2451IDBVR itself is intended for continuous ultra-low-power operation.

Packaging Variants and Pin Layout of TLV2451IDBVR

The TLV2451IDBVR package is a 5-lead SOT-23 (SC-74A, SOT-753), supporting high-density PCB layouts demanded by today’s space-sensitive applications. Pinout for the SOT-23-5 is as follows:

Output

V–

Non-inverting input (IN+)

Inverting input (IN–)

V+

Surface-mount configuration and minimal footprint enable ease of automated PCB assembly and integration into compact product designs.

Common Engineering Uses for TLV2451IDBVR

The TLV2451IDBVR has been designed with versatility in mind, making it suitable for various real-world engineering scenarios:

Portable medical devices, such as wearable monitors and diagnostic equipment, where operational amplifiers must provide accurate signal processing while conserving battery life.

Battery-operated data acquisition systems, including environmental and industrial sensors, where input/output range and power efficiency are both paramount.

Signal conditioning circuits in low-voltage microcontroller or FPGA-based systems, leveraging rail-to-rail operation for full-range sensor interfacing.

Basic analog filtering, buffering, and amplification in compact consumer electronic gadgets.

Such uses benefit from the device’s balance of performance, robustness, and minimal energy footprint.

Engineering Guidelines for Using TLV2451IDBVR

When selecting the TLV2451IDBVR for a new design, engineers should consider the following:

Operating voltage compatibility: Verify that your application’s supply voltage falls within the 2.7 V to 6 V range, ensuring both performance and device reliability.

Load requirements: Confirm that the amplifier’s ±10 mA output drive is adequate for expected loads. For heavier loads, consider output buffering.

Bandwidth and slew rate: The 220 kHz bandwidth and 0.11 V/μs slew rate make the TLV2451IDBVR ideal for lowto moderate-frequency applications. For high-speed signal processing, assess the tradeoffs accordingly.

Thermal management: Although low power reduces thermal concerns, industrial temperature range operation may require attention to PCB layout and airflow for extreme environments.

Input offset and noise: For high-precision or low-signal applications, the input offset and noise specifications are suitable for most use cases, but always confirm against your system-level error budget.

Alternative or Substitute Devices for TLV2451IDBVR

Selecting a replacement or alternative to the TLV2451IDBVR may be necessary for second-sourcing or extended feature requirements. Within the Texas Instruments TLV245x family, the following models offer varying channel counts and packaging:

TLV2450: Single-channel op amp with shutdown functionality, also in SOT-23-6.

TLV2452: Dual-channel version available in MSOP-8 and SOIC-8.

TLV2453: Dual-channel with shutdown, in MSOP-10.

TLV2454 and TLV2455: Quad-channel versions in SOIC-14 and TSSOP-14/16.

For applications that require higher bandwidth, slewing, or different rail-to-rail capabilities, the TLV246x or TLV247x series may be considered, albeit with higher supply currents. Always verify pin compatibility and key performance characteristics before finalizing a substitute.

Conclusion

The Texas Instruments TLV2451IDBVR is a robust, ultra-low-power, rail-to-rail operational amplifier purpose-built for modern portable, battery-powered, and low-voltage electronic designs. Its careful balance of low quiescent current, wide signal range, and output drive capabilities empowers engineers to innovate in fields where power efficiency and analog integrity are paramount. With flexible packaging, simple integration, and a comprehensive family of related devices, the TLV2451IDBVR delivers the versatility and confidence required for next-generation electronic product development and procurement strategies.