L272D2 - 0.7A Dual Power Operational Amplifier | onsemi
N.º de pieza: L272D2 ✓ ActivoL272D2 Descripción general
An operational amplifier is an active analog signal-conditioning device that uses high-gain differential amplification to increase the voltage difference between its two inputs. A dual operational amplifier contains two amplifier channels in one package, reducing board area compared with two discrete single-channel devices. A power operational amplifier extends this role toward low-impedance loads, motor-control interfaces, audio output stages, and other applications requiring more output current than a conventional small-signal op amp can provide.
The L272D2 provides output current up to 0.7 A and accepts a minimum supply voltage of 4 V. Its input stage supports ground-compatible operation and both common-mode and differential-mode input ranges. The available family documentation also identifies low saturation voltage, thermal shutdown, and operation suitable for low-impedance loads as major features. The 16-pin SOIC package provides a compact surface-mount implementation for dual-channel analog designs.
The L272 family is designed to combine the familiar function of a general-purpose dual op amp with substantially greater output-current capability. Ground-compatible inputs simplify designs that accept signals referenced to the analog ground plane, while thermal shutdown provides a defined protection mechanism during excessive power dissipation. Exact input-offset, input-bias-current, slew-rate, gain-bandwidth, and saturation-voltage values are not available in the supplied excerpts and should be taken from the manufacturer datasheet before final design approval.
Typical uses include low-impedance audio and signal drivers, motor or actuator interfaces, power buffers, industrial control modules, and two-channel analog front ends. In each case, the amplifier operates as a closed-loop circuit, and stability depends on the feedback network, load characteristics, supply bypassing, and output-current demand. The dual arrangement is useful when two related channels can share the same supply and ground system while retaining independent amplifier inputs and outputs.
Designers should verify total supply voltage, input and output swing, load impedance, output-current waveform, thermal rise, and stability under the intended loading. Decoupling capacitors should be placed close to the supply pins, and exposed copper should be used to improve heat dissipation. The 0.7 A output rating describes a device intended for power-drive duties, but continuous-current capability still depends on package dissipation, ambient temperature, and PCB thermal resistance.
This page consolidates the verified L272D2 device description, distributor records, family comparison information, and practical selection guidance. It also distinguishes verified characteristics from unavailable parameters, helping engineers evaluate this dual power operational amplifier without assuming unverified electrical limits or compatibility.
Alternativas directas para L272D2 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con L272D2 (mismo factor de forma y huella) — difiere en Package.
L272AD2
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Ver hoja de datos →L272D2 Valores máximos y características eléctricas
| Amplifier Type | High-power dual operational amplifier |
| Number of Channels | 2 channels |
| Corriente de salida máxima | 0.7 A |
| Minimum Supply Voltage | 4 V |
| Maximum Total Supply Voltage | 28 V (±14 V) |
| Thermal Shutdown Temperature | 160 °C |
| Input Type | Ground-compatible differential inputs |
| Encapsulado | 16-pin SOIC |
| Tipo de montaje | Surface mount |
Guía de configuración de pines de L272D2 16-pin soic
Configuración de pines para L272D2 (encapsulado 16-pin soic). Este componente analógico presenta pines de entrada, salida y alimentación. Consulte la hoja de datos del fabricante para conocer las configuraciones de los pines de ajuste de offset, compensación y habilitación. Ideal para circuitos de acondicionamiento de señal y amplificadores.
No hay datos detallados de patillaje disponibles para L272D2.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
L272D2 es adecuado para 6 aplicacións: Low-Impedance Audio Driver, Motor and Actuator Signal Interface, Industrial Control Signal Buffer, Power Buffer and Level Shifter, Test and Measurement Output Stage, Ground-Referenced Dual Signal Conditioning.
Low-Impedance Audio Driver
The L272D2 fits low-impedance audio drive requirements because its verified output-current capability reaches 0.7 A while each channel retains the familiar closed-loop behavior of an operational amplifier. It can be placed in an inverting or non-inverting amplifier stage, with feedback resistors setting the closed-loop gain. The 16-SOIC package keeps a dual-channel implementation compact, while the 4 V minimum supply supports lower-voltage systems. Designers must verify output swing, slew rate, gain-bandwidth product, thermal dissipation, and loop stability against the speaker or line input because those values are not available in the supplied excerpts.
Recomendado
Motor and Actuator Signal Interface
The L272D2 can serve as the voltage-drive interface between a control signal and a low-impedance motor or actuator input because its verified output current is rated up to 0.7 A. In a typical implementation, one channel follows a control waveform while the other provides monitoring, buffering, or a complementary signal. The minimum operating supply is 4 V, but continuous actuator current, inductive energy, and thermal conditions require separate analysis. Add suitable flyback protection for inductive loads and confirm the actual output-current derating, saturation behavior, and stability in the manufacturer datasheet.
Recomendado
Industrial Control Signal Buffer
The L272D2 is appropriate for industrial control modules that must buffer a sensor or controller output into a low-impedance plant interface. Its dual-channel arrangement allows one amplifier to drive a control signal and the other to condition a feedback or reference signal, while the 16-SOIC package limits board footprint. The verified 0.7 A output-current capability provides more drive than a conventional signal op amp, but it also demands careful supply bypassing and copper-area planning. Verify industrial temperature rating, input common-mode range, output swing, noise, and transient performance before industrial deployment.
Recomendado
Power Buffer and Level Shifter
The L272D2 can be used as a power buffer between a high-impedance source and a lower-impedance downstream circuit. Its verified output current of up to 0.7 A helps preserve signal amplitude where a general-purpose dual amplifier would be limited by drive capability, and the 4 V minimum supply supports compact low-voltage systems. Configuring the device as a voltage follower minimizes closed-loop gain while using its current capability. Confirm follower stability with the intended capacitive load, verify output swing at the selected load, and review thermal rise at sustained output current.
Recomendado
Test and Measurement Output Stage
The L272D2 can provide a buffered output stage for test and measurement equipment that must drive low-impedance inputs while preserving a control-system reference signal. Its two channels can be allocated to complementary or differential outputs, and the 0.7 A drive rating offers margin over small-signal operational amplifiers. The minimum 4 V supply requirement allows operation from compact test fixtures, although actual usable output range depends on load and supply voltage. Before using the amplifier with external instruments, verify output-current limits, output impedance, small-signal bandwidth, slew rate, and whether the selected load introduces instability.
Recomendado
Ground-Referenced Dual Signal Conditioning
The L272D2 supports ground-referenced dual signal-conditioning paths because the verified family information identifies ground-compatible inputs and both common-mode and differential-mode input ranges. The device can amplify, invert, attenuate, or buffer two related analog channels while providing substantially more output drive than a conventional dual op amp. Its 16-SOIC package simplifies PCB integration, but exact input-range limits must be checked because the supplied excerpts do not provide their numerical boundaries. Keep the feedback network close to the relevant pins, decouple the supply locally, and confirm that output swing leaves sufficient margin for the signal.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para L272D2 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | L272AD2 |
|---|---|---|
| Brand | onsemi | onsemi |
| Package | 16-pin SOIC | 16-pin SOIC |
| Amplifier Configuration | Dual operational amplifier | Dual operational amplifier |
| Maximum Output Current | 0.7 A | 0.7 A |
| Minimum Supply Voltage | 4 V | 4 V |
| Maximum Total Supply Voltage | 28 V (±14 V) | 28 V (±14 V) |
| Input Compatibility | Ground-compatible inputs | Ground-compatible inputs |
Diferenciadores clave
- Substantial output-drive capability in a dual amplifier (frente a L272AD2)
- Lower minimum supply voltage for the dual power-amplifier family (frente a L272AD2)
- Broader tolerance for applications that do not require the tighter precision variant (frente a L272AD2)
Notas de diseño
Treat the 0.7 A output rating as a device capability rather than an unrestricted continuous-load target. Estimated: at a 12 V total supply, 6 V output, and 0.5 A output current, ideal amplifier dissipation is approximately 3 W before accounting for quiescent current and output-stage losses. Provide copper around the SOIC power pins, minimize thermal bottlenecks, and compare the resulting junction-temperature estimate with the manufacturer limit before applying sustained high current.
Place the supply-decoupling network directly between the relevant power and ground pins, with a short return path that avoids high-current output-current loops. Keep the two amplifier feedback networks close to their associated inputs and outputs, and route high-current output paths away from sensitive input traces. Because the verified excerpts do not specify the pin numbers or exposed-pad arrangement, confirm the package drawing and pinout in the manufacturer datasheet before final routing.
Do not infer generic dual-op-amp behavior from this power-capable device without checking the L272D2 datasheet. The verified information establishes a 4 V minimum supply, up to 0.7 A output current, ground-compatible inputs, and 160 °C thermal shutdown, but it does not provide gain-bandwidth product, slew rate, input-range limits, output swing, or exact thermal derating. Confirm those values and the complete 16-pin pinout before schematic release or substitution.
Use separate high-current and high-impedance grounding paths where practical. Feedback components should connect to the amplifier pins rather than through shared narrow copper routes, which can introduce resistance, inductance, and coupling between channels. Check the selected output network for capacitive loading because the supplied records do not establish the exact gain-bandwidth product or stability profile. A scope measurement of step response and ringing under the real load is advisable before production release.
Información de cumplimiento
The supplied product excerpts do not contain explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. These fields remain unknown rather than being inferred from the manufacturer or package.