LM324ADTBR2G Operational Amplifier Specifications and Applications

ElecSuppliers Part Number GuideSep 26, 2026

LM324ADTBR2G is a quad general-purpose operational amplifier from onsemi. It integrates four independent operational amplifier channels in a 14-pin TSSOP package and is designed for low-voltage analog signal processing and single-supply applications.

The device belongs to the LM324A family and provides improved input offset performance compared with standard LM324 versions. Its four amplifier channels can be used independently for signal amplification, buffering, filtering, voltage monitoring, and analog control.

The TSSOP-14 package provides a smaller surface-mount solution than traditional through-hole packages and can help reduce PCB space in compact electronic equipment.

LM324ADTBR2G Key Specifications

LM324ADTBR2G contains four operational amplifier channels and has a typical gain bandwidth product of 1 MHz. Its typical slew rate is 0.6 V/µs.

The device supports a supply voltage range from 3 V to 32 V for single-supply operation. It can also be used with dual supplies within the applicable operating limits.

The maximum input offset voltage for the LM324A version is specified at 3 mV under the applicable conditions. Typical quiescent current is approximately 0.35 mA.

LM324ADTBR2G is specified for an operating temperature range of 0°C to +70°C and uses a 14-pin TSSOP package.

LM324ADTBR2G Quad Operational Amplifier

Four independent operational amplifier channels are integrated into LM324ADTBR2G.

This allows several analog functions to be implemented using a single IC. For example, different channels can be used for sensor amplification, signal buffering, active filtering, voltage monitoring, and threshold detection.

A quad configuration can reduce the number of ICs required on the PCB while simplifying the overall power distribution.

The four channels share the same supply rails, while each channel has its own input and output terminals.

LM324ADTBR2G Supply Voltage

LM324ADTBR2G supports single-supply operation from 3 V to 32 V.

This wide operating range allows the device to be used in a variety of embedded, industrial, and consumer electronics systems.

Single-supply operation is particularly useful when a circuit has only one positive voltage rail and does not require a separate negative supply.

The selected supply voltage should be evaluated together with the required input common-mode range and output voltage range. LM324ADTBR2G is not a rail-to-rail input and output amplifier, so the signal range should remain within the specified operating limits.

LM324ADTBR2G Input Common-Mode Range

LM324ADTBR2G is designed to support input common-mode voltages that include the negative supply rail under the specified conditions.

This makes it useful for circuits where analog signals operate close to ground.

Common applications include sensor interfaces, battery monitoring, current measurement, voltage detection, and low-frequency signal conditioning.

The positive-side common-mode limitation should also be considered. A signal approaching the positive supply rail may not remain within the valid input range.

LM324ADTBR2G Gain Bandwidth and Slew Rate

LM324ADTBR2G has a typical gain bandwidth product of 1 MHz and a typical slew rate of 0.6 V/µs.

These characteristics make it suitable for low-frequency analog applications rather than high-speed signal processing.

When the closed-loop gain is increased, the available signal bandwidth decreases. Designers should therefore evaluate gain, signal frequency, output amplitude, and transient response together.

For applications requiring substantially higher bandwidth or faster output transitions, a dedicated high-speed operational amplifier should be considered.

LM324ADTBR2G Input Offset Voltage

The LM324A family provides improved input offset voltage performance compared with the standard LM324 version.

For LM324ADTBR2G, the maximum input offset voltage is specified at 3 mV under the applicable conditions.

Input offset voltage can affect measurement accuracy when amplifying small signals. In high-gain circuits, even a relatively small input offset can become a noticeable output error.

Precision designs should also consider resistor tolerance, input bias current, temperature drift, sensor accuracy, and PCB leakage when calculating the total error.

LM324ADTBR2G TSSOP-14 Package

One of the defining characteristics of LM324ADTBR2G is its TSSOP-14 package.

The package provides four operational amplifier channels in a compact surface-mount form factor. This can be useful when PCB space is limited or when automated surface-mount assembly is preferred.

The TSSOP-14 package is different from the SOIC-14 package used by LM324ADR2G. Although the two devices belong to the same LM324A family and have similar electrical specifications, they should not be considered mechanically interchangeable without checking the PCB footprint.

LM324ADTBR2G Applications

LM324ADTBR2G can be used in sensor signal conditioning, industrial control systems, voltage monitoring circuits, battery-powered electronics, active filters, and embedded analog equipment.

In sensor applications, the amplifier can increase low-level signals before they are processed by an analog-to-digital converter.

In monitoring circuits, individual amplifier channels can be configured for voltage scaling, signal buffering, or threshold detection.

In industrial equipment, the four integrated channels can support several analog functions while sharing the same power supply.

The compact TSSOP package also makes the device suitable for space-constrained PCB designs.

LM324ADTBR2G Design Considerations

When designing with LM324ADTBR2G, the supply voltage, input common-mode range, output swing, gain, bandwidth, slew rate, and load conditions should be evaluated together.

The device is intended for general-purpose analog applications and should not be selected solely on the basis of its 1 MHz gain bandwidth.

PCB layout is also important when processing low-level analog signals. Sensitive input traces should be kept away from switching nodes, high-current paths, and high-frequency digital signals.

Power-supply bypass capacitors should be placed close to the IC supply pins to reduce the influence of supply noise.

Unused amplifier channels should be configured appropriately rather than leaving their inputs floating.

LM324ADTBR2G and LM324ADR2G

LM324ADTBR2G and LM324ADR2G are both LM324A quad operational amplifiers from onsemi.

Their main package difference is important for PCB design. LM324ADR2G uses a SOIC-14 package, while LM324ADTBR2G uses a TSSOP-14 package. Both versions are listed with a typical 1 MHz gain bandwidth, 0.6 V/µs slew rate, 3 mV maximum input offset voltage, and four amplifier channels.

Therefore, an electrical comparison alone is not sufficient when selecting between the two. The PCB footprint, package dimensions, assembly process, and available board space must also be considered.

LM324ADTBR2G Sourcing Considerations

When sourcing LM324ADTBR2G, buyers should confirm the complete onsemi part number, TSSOP-14 package, operating temperature range, electrical specifications, quantity, and delivery requirements.

LM324ADTBR2G should not be automatically replaced with LM324ADR2G because their package configurations are different.

For production procurement, buyers should verify manufacturer traceability, date code, packaging condition, package type, and the exact ordering code.

LM324ADTBR2G is a practical option for low-frequency analog designs requiring four operational amplifier channels, single-supply operation, improved LM324A offset performance, and a compact TSSOP-14 package.