THS4275D - 400MHz Low-Distortion Voltage-Feedback Amplifier | Texas Instruments
部品番号: THS4275D ✓ 生産中THS4275D 概要
An operational amplifier is an active semiconductor device that uses high-gain differential amplification to increase the amplitude of an input signal. A voltage-feedback amplifier routes its output through a feedback network, while the THS4275D provides the combination of unity-gain stability and wide bandwidth needed for precision signal conditioning. Its performance characteristics are intended to support low-noise and low-distortion operation across multiple AC specifications.
The THS4275D is a single amplifier rather than a dual or quad device, allowing designers to use independent gain paths when channel count, routing, or power-management requirements favor discrete single-channel sections. The verified manufacturer information identifies the THS4275 as a super-fast, ultra-low-distortion high-speed amplifier with shutdown capability. The shutdown function can reduce power consumption when the signal path is not active, subject to the device's specified operating conditions.
The 8-SOIC package provides a conventional surface-mount footprint for laboratory, industrial, instrumentation, and communications equipment. Because the supplied verified data does not include the complete electrical tables, pin assignments, noise density, slew rate, distortion figures, supply-current limits, or exact input and output headroom, those parameters are not guessed here. The 400 MHz bandwidth, -40°C to +85°C temperature range, SOIC package, and shutdown-enabled product description are the verified attributes available for comparison.
Typical applications include high-speed signal conditioning, communications receive and transmit paths, instrumentation front ends, test and measurement equipment, and analog signal chains requiring low distortion. The unity-gain-stable architecture also allows use as a general-purpose high-speed amplifier when the circuit is designed around the manufacturer's recommended operating conditions.
Designers should preserve adequate input and output voltage headroom, maintain the recommended bypassing near the supply pins, and verify shutdown-control polarity and timing against the manufacturer datasheet before production release. This page combines verified manufacturer and distributor information, structured application guidance, parameter comparison, and practical sourcing details for engineers evaluating the THS4275D.
ドロップイン代替品: THS4275D — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: THS4275D （同一形状・フットプリント） — 相違点: Amplifier Type, Package, Slew Rate.
THS4275DRG4
✅ ドロップイン📋 参考代替品（カタログ未掲載）
THS4275DR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
THS4271D
✅ ドロップイン価格はお問い合わせください
データシートを見る →THS4275D 最大定格＆電気的特性
| Amplifier Type | Voltage Feedback Amplifier |
| Number of Circuits | 1 circuit |
| Bandwidth | 400 MHz |
| パッケージ | 8-SOIC |
| 動作温度範囲 | -40°C to +85°C |
| 電源電圧 | As low as 5 V and as high as ±5 V |
| Gain Stability | Unity-gain stable |
| Feedback Architecture | Voltage feedback |
| Noise | Low noise |
| Slew Rate | High slew rate |
| Distortion | Ultra-low distortion |
| Shutdown Capability | Power-down capability |
| 実装タイプ | Surface mount |
| Product Family | THS4275 |
| Lead Time | Can ship immediately; estimated delivery Mar 19 - Mar 24 |
THS4275D 8-soic ピン配置ガイド
THS4275D (8-soic パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: THS4275D.
詳細は データシート をご参照ください。
主な用途
THS4275D の用途: 6 件s: High-Speed Instrumentation Signal Conditioning, Communications Receive Signal Path, Data Acquisition Front End, Test and Measurement Signal Conditioning, Audio and Low-Distortion Amplification, Power-Down Duty-Cycled Analog System.
High-Speed Instrumentation Signal Conditioning
The THS4275D fits high-speed instrumentation front ends because its verified 400 MHz bandwidth, low-noise characterization, high slew rate, and low distortion support accurate amplification of rapidly varying sensor signals. It is particularly relevant where a measurement chain requires unity-gain stability and a clean signal path rather than the integration of multiple amplifier channels. The device can condition signals ahead of data converters or measurement equipment while preserving low-distortion behavior across the AC bandwidth. Designers should verify input common-mode limits, output swing, supply headroom, and stability against the manufacturer datasheet. Shutdown capability can also reduce power consumption when the instrument is not acquiring data, provided the control polarity and timing are implemented according to the verified pin configuration.
おすすめ
Communications Receive Signal Path
The THS4275D is applicable to communications receive signal paths that benefit from 400 MHz bandwidth, low noise, high slew rate, and low distortion. These characteristics make the amplifier useful for conditioning moderate-amplitude high-frequency signals before conversion or further processing. Unity-gain stability supports direct voltage-following use, while the low-distortion specification is valuable when preserving waveform shape is more important than adding channel integration. The verified 8-SOIC package is compatible with conventional surface-mount assembly. In a production design, engineers must confirm the required common-mode voltage, output swing, supply-noise sensitivity, and shutdown behavior from the official manufacturer datasheet. The quoted unit price was $4.6158 as of 2026-10-28.
おすすめ
Data Acquisition Front End
The THS4275D can be used in a data-acquisition front end when the source produces high-bandwidth signals and the acquisition chain requires low distortion. Its verified 400 MHz bandwidth and high slew rate provide the basic dynamic-range headroom needed for fast transient capture, while unity-gain stability enables a simple voltage-following topology with minimal compensation work. The low-noise and low-distortion characteristics help avoid degrading the information content of the measured waveform. The shutdown function may support duty-cycled acquisition systems, but the control logic and settling behavior must be confirmed from the datasheet. Board-level implementation should use short signal paths, clean return connections, and careful supply bypassing to prevent parasitic effects from masking the amplifier’s intrinsic performance.
おすすめ
Test and Measurement Signal Conditioning
The THS4275D is well matched to test and measurement signal-conditioning circuits requiring a wide bandwidth and low distortion. The verified 400 MHz bandwidth supports high-frequency test signals, and the stated high slew rate helps preserve large-amplitude transitions. Unity-gain stability allows the part to serve as a buffer or low-gain stage without introducing a decompensated-amplifier stability requirement. For oscilloscope front ends, waveform generators, or automated test equipment, the amplifier can sit between a source and the measuring device to control amplitude and impedance. Its shutdown capability can reduce system power when the channel is inactive. Exact input/output ranges, noise density, and distortion conditions must be taken from the manufacturer datasheet rather than inferred from the 400 MHz headline specification.
おすすめ
Audio and Low-Distortion Amplification
The THS4275D may serve in low-distortion audio or precision analog amplification stages because the verified manufacturer description identifies low noise, low distortion, high slew rate, and wide bandwidth. Those attributes help retain amplitude accuracy and signal shape when handling higher-frequency content than typical general-purpose audio amplifiers cover. The 8-SOIC package supports conventional surface-mount assembly, and the single-amplifier configuration permits independent routing for stereo or multi-channel systems. However, the verified 400 MHz bandwidth should not be interpreted as a complete audio specification; output current capability, harmonic distortion at the intended frequency and load, noise density, and output swing are not provided in the supplied excerpts. Those values must be checked before setting the gain, loading, or supply rails.
おすすめ
Power-Down Duty-Cycled Analog System
The THS4275D is useful in duty-cycled analog systems because the verified Texas Instruments product information specifically identifies the addition of power-down capability to the THS4275 family. A system that periodically enables and disables its signal path can use shutdown to reduce consumption during inactive intervals while retaining the family’s verified low-noise, high-slew-rate, wide-bandwidth, and low-distortion characteristics during operation. The 8-SOIC package simplifies integration into surface-mount analog boards. Implementation must be based on the official shutdown pin definition, active logic level, shutdown current, and startup timing because those details are absent from the supplied snippets. Engineers should also verify whether shutdown affects output state and how long the circuit requires to become signal-ready before the next acquisition or measurement cycle.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: THS4275D — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | THS4275DRG4 | THS4275DR | THS4271D |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Amplifier Type | Voltage Feedback Amplifier | Voltage Feedback Amplifier | Voltage Feedback Amplifier | Voltage Feedback Amplifier |
| Number of Circuits | 1 circuit | 1 circuit | 1 circuit | 1 circuit |
| Gain Stability | Unity-gain stable | Unity-gain stable | Unity-gain stable | Unity-gain stable |
| Shutdown Capability | Yes | Yes | Yes | No shutdown capability stated in verified comparison data |
| Noise | Low noise | Low noise family characteristic | Low noise family characteristic | Low noise family characteristic |
| Slew Rate | High slew rate | High slew rate family characteristic | High slew rate family characteristic | High slew rate family characteristic |
| Distortion | Ultra-low distortion | Ultra-low distortion family characteristic | Ultra-low distortion family characteristic | Low distortion family characteristic |
主な差別化要因
- Adds verified shutdown capability to the related THS4271 performance family （vs THS4271D)
- Provides a confirmed 400 MHz bandwidth and single-circuit configuration （vs THS4271D)
- Uses a verified manufacturer ordering family with shutdown-enabled variants （vs THS4275DRG4)
設計ノート
Place the input, output, supply, and bypass connections to minimize loop area and preserve the high-frequency performance associated with the verified 400 MHz bandwidth. Use short, direct traces for the signal path and connect the bypass capacitor close to the device power pins. Do not assume that the SOIC footprint alone guarantees good performance; grounding, return-current continuity, and component parasitics are critical at this bandwidth.
Verify the allowed supply range, input common-mode range, and output swing in the official THS4275 datasheet before selecting rail voltages. The supplied excerpts mention operation from supplies as low as 5 V and as high as ±5 V, but do not provide every absolute maximum or recommended operating limit. Use local decoupling and avoid routing the supply return through high-current or switching paths that could degrade the amplifier's noise and distortion performance.
Do not treat a related THS4275 ordering code as an automatic substitute without checking the package drawing, pin configuration, temperature grade, and ordering information. The THS4275DR and THS4275DRG4 references identify the same family, while THS4271D does not provide the verified shutdown advantage. Confirm the exact MPN and datasheet revision before PCB release or production purchasing.
Use the lowest practical source impedance and preserve controlled impedance on high-speed routes. Add resistive damping or additional filtering only where signal integrity measurements show that ringing or capacitive loading requires it; indiscriminate termination can reduce signal amplitude and bandwidth. Validate stability, output waveform, and distortion at the intended gain because the verified data confirms unity-gain stability but does not quantify every gain-versus-frequency condition.
コンプライアンス情報
The supplied verified excerpts do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These values remain unknown rather than being inferred.
