THS4051ID - 70MHz High-Speed Amplifier | Texas Instruments
MPN： THS4051ID ✓ 啟用中THS4051ID 概覽
A high-speed voltage-feedback amplifier is a voltage-amplifier topology that uses feedback to set closed-loop gain while preserving signal fidelity across a wide frequency range. The THS4051 belongs to the operational-amplifier hierarchy, combining low-noise signal conditioning with the fast response required by video, communications, and imaging systems. Its stable operation at all gains makes it useful in gain-dependent analog front ends where predictable behavior is important.
The principal performance features are 70 MHz small-signal bandwidth, 240 V/µs slew rate, and 60 ns settling to 0.1%. The amplifier also provides 100 mA typical output drive and a 30 MHz differential-gain bandwidth of 0.1 dB. According to the Texas Instruments manufacturer datasheet, these characteristics make THS4051 suitable for video, communication, and imaging applications.
THS4051 uses a voltage-feedback architecture and is stable at all gains in both inverting and non-inverting configurations. Its bandwidth supports video signals extending to the 30 MHz region, while the 240 V/µs slew rate limits large-signal distortion when handling rapidly changing waveforms. The device operates from dual supplies of ±4.5 V to ±16 V, supporting conventional positive and negative analog rails used in professional video and communications equipment.
Typical uses include video buffering, communications-signal conditioning, imaging front ends, active filters, and general-purpose high-speed analog amplification. In these systems, the amplifier can reduce edge degradation that might otherwise appear when a slower amplifier drives a terminated or capacitive load. The single-channel configuration also lets designers allocate one amplifier per signal when channel count and board area are important.
When laying out a THS4051 circuit, use short feedback paths, place input and feedback components close to the pins, and minimize parasitic capacitance around high-impedance input nodes. Keep power-supply decoupling close to the supply pins and verify stability with the actual source impedance, load, and cable capacitance used in the finished system.
This product page consolidates the THS4051ID electrical characteristics, validated same-package alternatives, application guidance, comparison parameters, and practical PCB considerations. These engineering-oriented details help engineers select the amplifier, compare suitable replacements, and plan a robust high-speed analog layout without duplicating basic datasheet lookups.
直接替換替代品，適用於 THS4051ID — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
THS4051CDR
✅ 直接替換📋 參考替代品（不在目錄中）
THS4051IDRG4
✅ 直接替換📋 參考替代品（不在目錄中）
THS4051ID 最大額定值與電氣特性
| Amplifier Type | Single-channel voltage-feedback high-speed amplifier |
| Number of Channels | 1 channel |
| Small-Signal Bandwidth | 70 MHz |
| Slew Rate | 240 V/µs |
| Settling Time | 60 ns to 0.1% |
| Output Drive | 100 mA typical |
| Differential Gain Bandwidth | 30 MHz at 0.1 dB |
| Differential Phase | 0.01° |
| Supply Voltage Range | ±4.5 V to ±16 V |
| Gain Stability | Stable at all gains in inverting and non-inverting configurations |
| 封裝 | 8-SOIC, 0.154 inch (3.90 mm) body width |
| 腳位數 | 8 pins |
| 安裝類型 | Surface mount |
| Primary Applications | Video, communications, and imaging |
| Amplifier Topology | Voltage feedback |
THS4051ID 8-soic, 0.154 inch (3.90 mm) body width 腳位配置指南
THS4051ID（8-soic, 0.154 inch (3.90 mm) body width 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： THS4051ID.
請參閱 資料表 以查看完整腳位配置。
典型應用
THS4051ID 適用於 6 應用s: Video Signal Buffering, Communications Signal Conditioning, Imaging Front-End Amplification, High-Speed Active Filters, Precision Edge and Pulse Conditioning, Analog Test and Measurement.
Video Signal Buffering
The THS4051ID fits video buffers because it combines 70 MHz small-signal bandwidth with a 240 V/µs slew rate, preserving edge definition in higher-bandwidth analog paths. Its 30 MHz differential-gain bandwidth at 0.1 dB is also well suited to video distribution and gain stages. Place the amplifier close to the source and load, use short traces, and terminate the output according to the video standard and cable length. Verify output swing, source impedance, and settling performance at the intended gain before finalizing the PCB.
推薦
Communications Signal Conditioning
THS4051ID is appropriate for communications signal-conditioning stages that need a 70 MHz bandwidth and rapid large-signal response. The 240 V/µs slew rate and 60 ns settling time help preserve pulse shape when source and load impedances create meaningful transition requirements. Use short, impedance-controlled routing and keep feedback components adjacent to the amplifier to minimize parasitic feedback. Confirm the complete data path against the required modulation bandwidth, output amplitude, and channel timing budget.
推薦
Imaging Front-End Amplification
The THS4051ID can support imaging front ends where sensor or photodiode signals require low-distortion amplification across a broad bandwidth. Its 240 V/µs slew rate improves large-signal response, while stable operation at all gains simplifies the selection of inverting or non-inverting signal paths. Keep sensitive input nodes short and shielded from switching nodes, and evaluate noise, input bias current, and photodiode capacitance against the sensor specification. The amplifier’s 8-SOIC format also supports compact board arrangements when channel density matters.
推薦
High-Speed Active Filters
THS4051ID is suitable for wide-band active-filter stages because it is stable at all gains and combines 70 MHz bandwidth with a 240 V/µs slew rate. These characteristics allow practical filter bandwidths beyond those of many general-purpose operational amplifiers. Select resistor and capacitor values against the closed-loop gain, then check filter Q, component tolerances, and op-amp noise in the complete circuit. High-Q stages need careful layout because parasitic capacitance and probe loading can shift the intended response.
推薦
Precision Edge and Pulse Conditioning
The THS4051ID supports pulse and edge conditioning where the 240 V/µs slew rate and 60 ns settling time are more important than the quiescent current of a lower-speed amplifier. Fast transitions reduce the duration of amplitude distortion and help maintain timing relationships between channels. Confirm that the signal amplitude remains inside the output swing limits at the selected supply voltage, and use matched layouts when multiple channels must preserve skew. Add resistive loading or output isolation if the next stage presents unexpected capacitive loading.
推薦
Analog Test and Measurement
The THS4051ID is appropriate for general-purpose high-speed analog test and measurement circuits that require 70 MHz bandwidth and rapid settling. It can serve as a buffer, gain stage, or output driver in equipment handling waveforms with meaningful edge content. The 8-SOIC package is straightforward to assemble, but precision measurements also require attention to offset, noise, probe loading, and connector parasitics. Evaluate those parameters with the actual fixture and bandwidth requirement rather than relying on small-signal bandwidth alone.
推薦
推薦產品摘要
工程參考資料，適用於 THS4051ID — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | THS4051CDR | THS4051IDRG4 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-SOIC | 8-SOIC - same | 8-SOIC - same |
| Channel Count | 1 channel | 1 channel | 1 channel |
| Small-Signal Bandwidth | 70 MHz | 70 MHz | 70 MHz |
| Slew Rate | 240 V/µs | 240 V/µs | 240 V/µs |
| Settling Time | 60 ns to 0.1% | 60 ns to 0.1% | 60 ns to 0.1% |
| Output Drive | 100 mA typical | 100 mA typical | 100 mA typical |
| Supply Voltage Range | ±4.5 V to ±16 V | ±4.5 V to ±16 V | ±4.5 V to ±16 V |
| Gain Stability | Stable at all gains in inverting and non-inverting configurations | Stable at all gains in inverting and non-inverting configurations | Stable at all gains in inverting and non-inverting configurations |
| Differential Gain Bandwidth | 30 MHz at 0.1 dB | 30 MHz at 0.1 dB | 30 MHz at 0.1 dB |
主要差異化特點
- High-speed response with stable all-gain operation (對比THS4051CDR)
- Direct same-package ordering option (對比THS4051IDRG4)
- Single-channel architecture supports independent analog paths (對比THS4031ID)
設計說明
Route the high-speed signal path as a short, continuous trace from the source to the amplifier input and from the output to the load. Place input and feedback components directly beside their associated pins, and avoid routing sensitive input traces parallel to output and supply-return paths. For an 8-SOIC footprint, follow the Texas Instruments package drawing and PCB guidelines so pad spacing, solder mask, and assembly clearances match the specified body width.
Use a solid, low-impedance ground reference and place supply-bypass capacitors close to the amplifier supply pins. The 240 V/µs slew rate can produce fast current transitions, so long supply and ground loops increase radiated noise and may disturb neighboring analog stages. Keep the feedback loop compact and use a solid ground plane where possible. Verify the finished board with an oscilloscope because parasitic inductance and capacitance can affect settling even when the schematic simulation appears correct.
Do not select an amplifier from bandwidth alone when the application contains large signals or heavy capacitive loading. Although THS4051ID provides 70 MHz bandwidth and 240 V/µs slew rate, output swing, load current, supply headroom, and stability can impose earlier limits. Check the manufacturer operating conditions, use the intended load and source impedance, and preserve the supported common-mode range. Also confirm the exact physical pin map from the manufacturer datasheet before releasing artwork.
For cable or long-trace outputs, terminate the line according to its characteristic impedance and place any isolation resistor close to the amplifier pin. Rapid edges make uncontrolled impedance discontinuities more likely to produce reflections. If the source has significant capacitance, add a suitable isolation network and recheck stability and amplitude response. Probe with a short ground spring or a proper active probe to avoid adding unintended capacitance at the measurement point.
合規資訊
Use the current Texas Instruments product page and material-compliance documentation for formal RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations.
