LM324DTBR2G Operational Amplifier Specifications and Applications

ElecSuppliers Part Number GuideSep 26, 2026

LM324DTBR2G is a quad operational amplifier from onsemi's LM324 family. It is designed for general-purpose analog signal processing and supports single-supply operation, making it suitable for circuits where multiple op amp channels are required in the same device.

The LM324DTBR2G uses a TSSOP-14 package, providing a compact option for PCB designs with limited board space. It operates over a commercial temperature range of 0°C to +70°C and is supplied in Pb-free packaging. The device is commonly used in signal conditioning, amplification, filtering, voltage monitoring, and control circuits.

LM324DTBR2G Key Specifications

LM324DTBR2G contains four independent operational amplifier channels in one package. Its typical gain bandwidth product is 1 MHz, while the typical slew rate is 0.6 V/µs. The maximum input offset voltage is specified at 7 mV.

The device has a typical quiescent current of 0.35 mA and is designed for single-supply applications. Its input stage can operate with input signals close to the negative supply rail, which is useful in low-voltage analog circuits.

The output is not rail-to-rail, so the output voltage range should be considered when designing circuits that require operation close to the positive supply rail.

LM324DTBR2G Package and Operating Range

The LM324DTBR2G is supplied in a TSSOP-14 package measuring approximately 5.00 mm by 4.40 mm with a 0.65 mm pin pitch. The package provides four amplifier channels while keeping the PCB footprint relatively compact.

The specified operating temperature range is 0°C to +70°C. Designers should consider this range when using the device in industrial, outdoor, or other applications that may experience wider temperature variations.

LM324DTBR2G Electrical Characteristics

The LM324DTBR2G is intended for general-purpose analog applications rather than high-speed amplification. Its 1 MHz typical gain bandwidth product provides sufficient performance for many low-frequency signal processing tasks.

The 0.6 V/µs typical slew rate is suitable for slowly changing sensor signals, control voltages, audio-related circuits, and other moderate-speed applications. For high-speed signal acquisition or fast switching waveforms, an amplifier with higher bandwidth and slew rate may be more appropriate.

The maximum input offset voltage of 7 mV should also be considered when the circuit requires accurate amplification of very small differential signals.

LM324DTBR2G Applications

LM324DTBR2G can be used in a wide range of analog circuits. Typical applications include sensor signal conditioning, voltage amplification, active filters, voltage followers, threshold detection, signal buffering, and simple control circuits.

The four amplifier channels allow designers to combine several analog functions within one IC. For example, one channel can be used for signal amplification, another for filtering, and the remaining channels for voltage detection or buffering.

Its single-supply architecture also makes it convenient for systems powered from common DC supply rails where a separate negative supply is not available.

LM324DTBR2G Design Considerations

When designing with LM324DTBR2G, the supply voltage, input common-mode range, output voltage swing, input offset voltage, and frequency response should all be checked against the application requirements.

Because the device is not rail-to-rail at the output, the output may not reach the positive supply voltage under normal operating conditions. This is particularly important in low-voltage systems where the available output range is limited.

The relatively modest bandwidth and slew rate also make LM324DTBR2G more suitable for general-purpose and low-frequency analog circuits than high-speed applications.

LM324DTBR2G Compared With Other LM324 Versions

LM324DTBR2G and LM324DR2G use the same basic LM324 amplifier architecture, but they use different packages. LM324DR2G is supplied in an SOIC-14 package, while LM324DTBR2G uses the smaller TSSOP-14 package.

LM324ADTBR2G is another TSSOP-14 version in the LM324 family. The LM324A version provides a lower maximum input offset voltage than the standard LM324, making it a consideration for applications where offset accuracy is more important.

When selecting between these part numbers, engineers should check package dimensions, PCB footprint, electrical specifications, temperature range, and production requirements rather than treating the part numbers as interchangeable in every design.

LM324DTBR2G Sourcing Considerations

For production sourcing, buyers should confirm the exact manufacturer part number, package type, operating temperature range, packaging method, and date code requirements. LM324 family devices can have similar ordering codes, so the complete part number should be included in purchase orders and RFQs.

For replacement or second-source evaluation, electrical specifications and package compatibility should be verified before using another LM324 family device as a direct replacement.