TLV2450CD - 23µA, 220kHz Rail-to-Rail Op Amp | Texas Instruments
N.º de pieza: TLV2450CD ✓ ActivoTLV2450CD Descripción general
An operational amplifier, commonly called an op amp, is an analog integrated circuit that amplifies the difference between two input voltages. The TLV2450 belongs to the operational-amplifier hierarchy within analog and mixed-signal semiconductors. Its rail-to-rail input stage accepts signals extending toward the supply rails, while its rail-to-rail output stage provides useful output swing close to those limits. This combination makes it practical for low-voltage systems where the usable signal range is a substantial fraction of the available supply voltage.
The TLV2450CD combines low quiescent current with a comparatively wide 220 kHz gain-bandwidth product. Its typical input offset voltage is 20 µV, supporting accurate amplification of small sensor and bridge signals. Shutdown capability provides a path to reduce consumption when the circuit is inactive, which is useful in battery-operated acquisition systems. The 23 µA-per-channel supply current is particularly valuable when every microamp contributes to overall system energy use.
The device operates as a general-purpose single amplifier and can be configured for noninverting, inverting, summing, differential, filtering, and current-feedback applications. With a 220 kHz gain-bandwidth product, moderate closed-loop gains are practical in low-power signal paths. Designers must still account for noise gain, output-voltage headroom, capacitive-load stability, input common-mode range, and the effect of the selected external feedback network on accuracy and bandwidth.
Typical uses include portable sensor conditioning, low-frequency active filters, microphone preamplification stages, industrial measurement interfaces, and low-leakage battery-powered circuits. The shutdown pin is useful in duty-cycled systems that retain a measurement function while requiring lower consumption between measurements.
A key design consideration is to keep feedback-loop routing short and provide stable reference and bypass connections. Decoupling capacitors should be placed close to the supply pins, while sensitive input and feedback nodes should remain away from switching nodes and high-current paths. Because the operating current and bandwidth are modest, the TLV2450CD is most appropriate where low power and rail-to-rail signal access matter more than high speed or heavy capacitive-load drive.
This product page combines the manufacturer-defined operating characteristics with practical application guidance, package details, pin-compatible alternatives, and engineering considerations for portable and low-power analog systems.
Alternativas directas para TLV2450CD — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
TLV2450AIDRG4
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TLV2450AIDG4
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TLV2450CD Valores máximos y características eléctricas
| Amplifier Type | Single operational amplifier |
| Supply Current per Channel | 23 µA/channel |
| Gain-Bandwidth Product | 220 kHz |
| Input Offset Voltage | 20 µV typical |
| Output Drive Capability | ±10 mA |
| Input Common-Mode Range | Rail-to-rail |
| Output Swing | Rail-to-rail |
| Shutdown Support | Yes |
| Number of Channels | 1 channel |
| Número de pines | 8 pins |
| Encapsulado | 8-pin SOIC |
| Tipo de montaje | Surface mount |
Guía de configuración de pines de TLV2450CD 8-pin soic
Configuración de pines para TLV2450CD (encapsulado 8-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 TLV2450CD.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
TLV2450CD es adecuado para 6 aplicacións: Battery-Powered Sensor Conditioning, Portable Instrumentation Signal Chain, Low-Frequency Active Filtering, Microphone and Audio Preamp, Industrial Process Measurement, Low-Power Voltage Buffering.
Battery-Powered Sensor Conditioning
The TLV2450CD fits low-power sensor interfaces because its 23 µA supply current per channel reduces demand on a small battery, while rail-to-rail input and output operation increases the usable signal range at low supply voltages. The amplifier can condition a resistive sensor or low-level transducer signal before conversion by another circuit. Its 220 kHz gain-bandwidth product is suitable for slow-to-moderate sensor dynamics rather than high-bandwidth measurements. Designers should verify the input common-mode behavior, offset requirements, and output swing for the actual sensor output. Shutdown control can disable the amplifier during inactive intervals, although external leakage and sensor bias current may then dominate total system consumption.
Recomendado
Portable Instrumentation Signal Chain
The TLV2450CD is appropriate for portable instrumentation that amplifies small sensor signals without requiring high amplifier bandwidth. Its 20 µV typical input offset voltage helps preserve the integrity of low-level measurements, while rail-to-rail input and output stages improve signal utilization in compact, low-voltage systems. The 220 kHz gain-bandwidth product allows useful closed-loop bandwidth at moderate gains, making the device suitable for temperature, pressure, and position sensing. Use short feedback traces and maintain clean grounding because the modest bandwidth does not compensate for excessive board noise. Confirm offset and bias-current limits against the actual sensor impedance, and check the manufacturer datasheet for the required bypass capacitance and shutdown-control state.
Recomendado
Low-Frequency Active Filtering
The TLV2450CD can implement low-frequency active-filter stages because it combines a 220 kHz gain-bandwidth product with rail-to-rail output capability. This is useful for smoothing sensor signals or shaping the bandwidth of low-speed measurement channels. The amplifier's ±10 mA output-drive capability provides adequate drive for conventional passive networks and moderate capacitive loads, but stability must be checked when additional capacitance is present. Select component values so the closed-loop bandwidth remains comfortably below the device's gain-bandwidth limit, and evaluate the effect of noise gain at the selected topology. Place feedback components close to the amplifier and route the input and output nodes away from digital switching paths.
Recomendado
Microphone and Audio Preamp
The TLV2450CD can serve in a low-power microphone or small-signal audio preamplifier where rail-to-rail operation helps accommodate a limited supply voltage. The 220 kHz gain-bandwidth product is suitable for voice-band and other moderate-frequency signals, and the 23 µA supply current is useful in portable audio equipment. Noise, input capacitance, and the selected feedback resistors may set the practical noise floor even when the amplifier operates at low current. The device should not be selected for high-fidelity wideband audio designs requiring substantially greater bandwidth. Verify the input bias-current error against microphone impedance, check the maximum input voltage, and provide a low-noise bias reference for microphone-coupled configurations.
Recomendado
Industrial Process Measurement
The TLV2450CD is usable in industrial process-measurement modules when low quiescent current and rail-to-rail signal access are more important than high-speed response. It can buffer a 0-to-supply-rail sensor signal or provide gain ahead of a slower converter. Its 20 µV typical input offset voltage is beneficial for low-level conditioning, while the shutdown function can support duty-cycled measurement intervals. The operating-temperature limits and long-term stability should be checked for the installation environment. A practical design should isolate the amplifier from motors, relays, and switching supplies, use a stable reference for precision measurements, and verify the exact supply-voltage range before component selection is finalized.
Recomendado
Low-Power Voltage Buffering
The TLV2450CD works as a voltage buffer or unity-gain stage when a higher-impedance source must drive a moderate downstream load. Rail-to-rail output operation increases the available output range, and the ±10 mA drive capability is useful for light analog loads and short PCB traces. Its low 23 µA supply current makes the device suitable for continuously powered monitoring systems. The unity-gain bandwidth and stability are constrained by the 220 kHz gain-bandwidth product, so avoid adding large capacitive loads directly at the output. Confirm the output-voltage limits at the required load and follow the manufacturer recommendations for bypassing and shutdown control. A series isolation resistor may be considered when driving capacitive loads, but it must be validated with the complete circuit.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para TLV2450CD — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | TLV2450AIDRG4 | TLV2450AIDG4 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Number of Channels | 1 channel | 1 channel | 1 channel |
| Gain-Bandwidth Product | 220 kHz | 220 kHz | 220 kHz |
| Input Common-Mode Range | Rail-to-rail | Rail-to-rail | Rail-to-rail |
| Output Swing | Rail-to-rail | Rail-to-rail | Rail-to-rail |
| Shutdown Support | Yes | Yes | Yes |
Diferenciadores clave
- Documented package-compatible family replacement (frente a TLV2450AIDRG4)
- Low-power operation with useful bandwidth (frente a TLV2450AIDG4)
- Rail-to-rail signal access (frente a TLV2450AIDRG4)
Notas de diseño
The TLV2450CD consumes 23 µA per channel, so power budgeting should include quiescent current, shutdown behavior, output-stage current, and the bias current of surrounding circuitry. Place the manufacturer-recommended bypass capacitor directly between the supply and ground pins. In battery-powered designs, verify that leakage in the sensor network, feedback network, and external protection components does not overwhelm the low amplifier supply current.
Keep the op-amp input, feedback, and output paths compact and route them away from switching nodes and high-current return paths. Place bypass and compensation components adjacent to their associated pins, and use a continuous ground reference beneath the analog section when board geometry permits. Because the 220 kHz gain-bandwidth product limits high-frequency behavior, minimizing parasitic capacitance and feedback-loop area is particularly important in filtering and gain stages.
Do not assume rail-to-rail operation permits output saturation exactly at the supply rails; verify output swing against the required load current in the manufacturer datasheet. Also confirm the shutdown pin's permitted voltage state during power-up and power-down. For microphone, sensor, or high-impedance sources, check input bias-current error and source impedance, since the amplifier's low operating current does not eliminate errors caused by the source itself.
Información de cumplimiento
The TLV2450CD is a general-purpose operational amplifier; no specific AEC-Q100 qualification is identified. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status must be confirmed from the manufacturer product documentation for the exact orderable part.