THS4504D - 260MHz Fully Differential Amplifier | Texas Instruments
N.º da peça: THS4504D ✓ AtivoTHS4504D Visão geral
A fully differential amplifier is an amplifier IC that accepts a differential input and produces balanced differential outputs. Its architecture belongs to the operational-amplifier and buffer-amplifier hierarchy, where it provides common-mode rejection, symmetric signal paths, and controlled output common-mode voltage. This makes it particularly useful in communication, instrumentation, and analog-to-digital converter front ends where reducing differential-mode and common-mode distortion is important.
Key performance features include 260 MHz small-signal bandwidth, 1800 V/µs slew rate, third-order intermodulation distortion of -73 dBc at 30 MHz, and output third-order intercept point of 29 dBm at 30 MHz. The device supports a 15 V total supply range that can include a negative supply rail, while its operating temperature range is -40°C to +85°C. A shutdown function helps reduce power consumption when the signal chain is inactive.
The fully differential architecture provides balanced outputs and an output common-mode control function, making THS4504D suitable for driving high-speed analog-to-digital converters through resistive networks or transformer interfaces. Its bandwidth and distortion performance support 12-bit operation through 40 MHz according to the Texas Instruments product-page description. Designers should still verify signal settling, output swing, common-mode range, and external-component requirements against the manufacturer datasheet for the exact operating conditions.
Typical applications include high-speed data acquisition, communications receivers, differential analog front ends, and instrumentation chains. In these systems, the amplifier can suppress common-mode noise, maintain differential balance, and provide the slew rate needed for rapidly changing waveforms. The shutdown feature is useful in portable, test-and-measurement, and power-sequenced systems where continuous operation is unnecessary.
A critical design consideration is preserving differential symmetry. Input and output component networks should use matched layouts and values, the output common-mode voltage must remain within the valid range, and the PCB should minimize parasitic capacitance between differential nodes. Stable power-supply decoupling and careful grounding are necessary to prevent supply noise or board asymmetry from degrading distortion performance.
This page combines the verified manufacturer and distributor information for THS4504D with practical application guidance, specification comparisons, and drop-in-replacement analysis. The supplied cross-reference search did not establish five distinct pin-compatible alternatives, so the engineering analysis avoids presenting unverified substitutes as drop-in parts.
Alternativas drop-in para THS4504D — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com THS4504D (mesmo formato e footprint).
THS4505D
✅ Drop-InConsulte o preço
Ver ficha técnica →THS4505DG4
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
THS4505DR
✅ Drop-InConsulte o preço
Ver ficha técnica →THS4504D Classificações máximas e características elétricas
| Product Type | Fully differential amplifier |
| Amplifier Circuit Count | 1 circuit |
| Differential Architecture | Fully differential |
| Small-Signal Bandwidth | 260 MHz |
| Slew Rate | 1800 V/µs |
| Third-Order Intermodulation Distortion | -73 dBc at 30 MHz |
| Output Third-Order Intercept Point | 29 dBm at 30 MHz |
| Total Supply Voltage Range | 15 V |
| Negative Supply Rail Support | Supported |
| Output Common-Mode Control | Supported |
| Shutdown Capability | Supported |
| Supported ADC Resolution and Frequency | 12-bit operation through 40 MHz |
| Faixa de temperatura de operação | -40°C to +85°C |
| Encapsulamento | 8-pin SOIC (D) |
| Tipo de montagem | Surface mount |
| Status RoHS | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | unknown |
Guia de Configuração de Pinos do THS4504D 8-pin soic (d)
Configuração de pinos para THS4504D (pacote 8-pin soic (d)). Este componente analógico possui pinos de entrada, saída e alimentação. Consulte o datasheet do fabricante para configurações de offset null, compensação e pino de enable. Ideal para circuitos de condicionamento de sinal e amplificadores.
Nenhum dado detalhado de pinagem disponível para THS4504D.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
THS4504D é adequado para 6 aplicaçãos: High-Speed Differential Data Acquisition, Communications Receiver Signal Chain, Instrumentation and Measurement Front End, Portable Diagnostic and Monitoring Equipment, Industrial Test and Measurement, Balanced Audio and Video Signal Conditioning.
High-Speed Differential Data Acquisition
The THS4504D fits high-speed differential data-acquisition front ends because its fully differential architecture, 260 MHz bandwidth, and 1800 V/µs slew rate preserve the differential balance required by high-speed converters. Texas Instruments specifically describes support for 12-bit operation through 40 MHz. The device can sit ahead of an ADC through a matched resistive network, with its common-mode output adjusted to the converter input range. Designers should verify converter bandwidth, settling, kickback, and recommended network values, while preserving symmetry between the positive and negative signal paths. Its shutdown function can also reduce consumption during acquisition idle periods.
Recomendado
Communications Receiver Signal Chain
The THS4504D is appropriate for communications receivers where a low-noise, balanced signal must be conditioned before digitization or further processing. Its 260 MHz bandwidth provides margin above a 40 MHz 12-bit signal path, while the listed -73 dBc third-order intermodulation distortion and 29 dBm output third-order intercept point support linearity-sensitive designs. The fully differential implementation helps reject common-mode interference and produces balanced outputs for downstream circuitry. Layout must remain electrically symmetric, and output swing, common-mode range, and termination values must be confirmed from the manufacturer datasheet for the selected supply and load conditions.
Recomendado
Instrumentation and Measurement Front End
The THS4504D can amplify low-level differential signals in instrumentation when the required signal bandwidth exceeds the capabilities of general-purpose precision amplifiers. Its 260 MHz bandwidth and 1800 V/µs slew rate allow it to process fast sensor and transducer outputs without the slew limitation of slower operational amplifiers. Fully differential operation preserves signal polarity and rejects shared-mode disturbance, while output common-mode control provides flexibility when driving subsequent converter stages. The practical benefit is reduced analog-channel complexity, although system designers must still account for sensor noise, source impedance, gain error, and the amplifier's DC operating-point limits.
Recomendado
Portable Diagnostic and Monitoring Equipment
The shutdown capability of the THS4504D is useful in portable diagnostic and monitoring equipment where the high-speed signal path operates only during selected measurement intervals. Its 260 MHz bandwidth allows the device to handle broadband differential sensors, while its fully differential outputs simplify connection to balanced ADC inputs. Powering down the amplifier when measurements are not active can reduce system energy use without redesigning the analog path. The benefit depends on the actual shutdown behavior and available supply levels, which should be checked in the manufacturer datasheet. Signal-chain isolation and controlled startup are also necessary to prevent transients from disturbing adjacent channels.
Recomendado
Industrial Test and Measurement
The THS4504D is well matched to industrial test systems that combine wideband differential excitation, signal conditioning, and digitization. Its 260 MHz bandwidth supports rapid pulses and high-frequency test signals, while 1800 V/µs slew rate reduces distortion on fast edges. The balanced architecture limits common-mode pickup and can improve measurement repeatability when the DUT, cable, and input network are also balanced. Shutdown permits unused channels to be placed in a lower-power state when a multichannel fixture does not require continuous operation. Fixture designers must control impedance, connector transitions, grounding, and component matching to retain the amplifier's specified distortion performance.
Recomendado
Balanced Audio and Video Signal Conditioning
The THS4504D can serve as a high-speed balanced signal-conditioning element in professional audio, video, and other low-distortion differential interfaces. Its fully differential inputs and outputs minimize common-mode conversion, and the listed third-order distortion of -73 dBc at 30 MHz provides a defined starting point for frequency-dependent linearity evaluation. The 260 MHz bandwidth is much broader than typical audio-band requirements, allowing the same device to be evaluated for higher-bandwidth balanced systems. Designers must nevertheless verify output swing, slew-induced distortion at the actual signal amplitude, noise behavior, and stability with the selected load and termination network.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para THS4504D — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | THS4505D | THS4505DR | THS4504DR |
|---|---|---|---|---|
| Product Type | Fully differential amplifier | Fully differential amplifier | Fully differential amplifier | Fully differential amplifier |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-pin SOIC (D) | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Shutdown Capability | Yes | No | No | Yes |
Principais diferenciais
- Shutdown capability distinguishes the selected device from the related THS4505 (vs THS4505D)
- Wideband bandwidth supports high-speed differential data acquisition (vs THS4505D)
- High slew rate reduces edge-rate distortion in fast signals (vs THS4504DR)
- Fully differential implementation provides balanced signal handling (vs THS4505D)
Notas de projeto
Preserve differential symmetry from the input source through the feedback and output networks. Use identical routing geometry, spacing, and component placement for the positive and negative branches, and keep the feedback loops compact. A grounded or via-fenced ground plane can reduce inductance and common-mode pickup, but excessive ground vias directly beneath sensitive differential nodes may increase parasitic capacitance and upset impedance control.
Place the supply bypass capacitors immediately beside the power terminals and provide a low-impedance return path for high-frequency current. The THS4504D supports a negative supply rail, so both positive and negative rails require suitable decoupling when used. Keep analog and digital return currents separated where possible, and verify ground bounce because supply impedance can translate directly into differential-output distortion in this wideband, high-slew-rate amplifier.
Do not treat the THS4505 as a drop-in substitute for the THS4504 merely because both are related 8-pin fully differential amplifiers. Texas Instruments documents the THS4504 as having shutdown capability and the THS4505 as lacking it. Verify every terminal function, output-common-mode requirement, supply arrangement, and stability condition in the ordered datasheet before substituting either device.
Check output swing, output common-mode voltage, load impedance, and feedback-network values at the intended supply voltage and signal frequency. The verified 260 MHz bandwidth and 1800 V/µs slew rate describe the device capability, not guaranteed performance in every board environment. Add output isolation or termination only when its loading effect is included in the signal-integrity simulation, and use controlled-impedance routing for longer differential interconnects.
Informações de conformidade
The supplied manufacturer and distributor excerpts do not provide explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for THS4504D. The stated -40°C to +85°C operating range does not establish AEC-Q100 qualification.
