THS4011ID - 290MHz High-Speed Amplifier | Texas Instruments
MPN： THS4011ID ✓ 啟用中THS4011ID 概覽
A high-speed voltage-feedback amplifier is a wide-bandwidth operational amplifier that uses negative feedback to control gain, bandwidth, and output impedance. Within the broader semiconductor hierarchy, this amplifier belongs to the operational-amplifier family, then to linear and signal-conditioning ICs. Its combination of large bandwidth, high slew rate, and low distortion makes it appropriate for systems that process fast analog waveforms while requiring predictable signal amplitude and timing.
The headline performance of the THS4011 includes 290 MHz bandwidth, 310 V/µs slew rate, 37 ns settling time to 0.1%, and 110 mA typical output-current drive. The manufacturer datasheet also specifies low-distortion performance of -80 dBc at 1 MHz and input-voltage noise density of 7.5 nV/√Hz. These characteristics are particularly valuable in video, communications, test-and-measurement, and high-speed feedback networks where bandwidth alone does not fully describe usable amplifier performance.
The amplifier uses a voltage-feedback architecture optimized for high-speed closed-loop operation. Its 310 V/µs slew rate allows the output to follow rapidly changing input signals, while the 37 ns settling specification provides a useful basis for timing design. The 110 mA output-drive capability supports wider bandwidth into heavier loads than a small-signal amplifier with limited drive current, although load stability and parasitic capacitance still require careful evaluation.
Typical applications include analog video amplification, communications infrastructure, high-speed instrumentation, active filters, and low-distortion signal-conditioning stages. In each case, the amplifier can be used with external feedback components to establish the required closed-loop gain. The device is also suitable for test equipment requiring rapid transient response, provided the PCB layout controls parasitic capacitance and the selected gain remains stable at the required frequency.
A key design consideration is that high bandwidth and slew rate do not eliminate the need for careful analog layout. Keep feedback-loop components close to the amplifier, use short and symmetric signal paths, and provide local supply bypassing. Designers should also check output swing, input common-mode range, load current, and stability for each operating point rather than relying only on the 290 MHz small-signal bandwidth figure.
This product page combines the THS4011ID electrical characteristics, application guidance, pin-package information, and a parameter-by-parameter comparison with available alternatives. It also emphasizes practical PCB, output-drive, feedback, and signal-integrity considerations that help engineers evaluate the device beyond a basic distributor specification summary.
直接替換替代品，適用於 THS4011ID — 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。
THS4011CDG4
✅ 直接替換📋 參考替代品（不在目錄中）
THS4011IDG4
✅ 直接替換📋 參考替代品（不在目錄中）
THS4011CD
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
THS4011ID 最大額定值與電氣特性
| Amplifier Type | Voltage-feedback operational amplifier |
| Number of Circuits | 1 circuit |
| Gain-Bandwidth Product | 290 MHz (-3 dB) |
| Slew Rate | 310 V/µs |
| Settling Time | 37 ns to 0.1% |
| Output Drive Current | 110 mA typical |
| 供應電流 | 7.8 mA per channel |
| Total Harmonic Distortion | -80 dBc at 1 MHz |
| Input Voltage Noise Density | 7.5 nV/√Hz |
| Video Bandwidth | 70 MHz |
| 供應電壓 | ±5 V |
| 封裝 | 8-pin SOIC |
| 安裝類型 | Surface mount |
THS4011ID 8-pin soic 腳位配置指南
THS4011ID（8-pin soic 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： THS4011ID.
請參閱 資料表 以查看完整腳位配置。
典型應用
THS4011ID 適用於 6 應用s: Analog Video Amplification, Communications Signal Conditioning, High-Speed Active Filters, Precision Test and Measurement, Industrial Sensor Interfaces, Low-Distortion Driver Stages.
Analog Video Amplification
The THS4011ID fits analog video gain and distribution stages because the manufacturer datasheet specifies 70 MHz video bandwidth, 290 MHz general-purpose bandwidth, and a 310 V/µs slew rate. These parameters allow the amplifier to preserve fast video transitions while maintaining low distortion, including -80 dBc at 1 MHz under the stated test conditions. Place the device in a voltage-feedback configuration and select resistor values for the required gain. Verify output swing, source and load impedance, and channel-to-channel matching. Resistive isolation may be needed when the amplifier drives long cables or appreciable capacitance, because video interconnects can otherwise create peaking or unstable feedback behavior.
推薦
Communications Signal Conditioning
The THS4011ID is appropriate for communications signal-conditioning paths requiring accurate amplification of fast waveforms with limited distortion. Its 290 MHz -3 dB bandwidth provides substantial frequency range, while the 310 V/µs slew rate allows the output to follow large-amplitude transitions without excessive slew limiting. The 37 ns 0.1% settling time is useful when timing margins are important, and the 110 mA typical output-drive capability provides stronger drive than a conventional small-signal op amp. In RF-adjacent signal paths, use short traces, controlled impedance, and clean grounding to avoid introducing distortion outside the amplifier itself.
推薦
High-Speed Active Filters
The THS4011ID can serve as the active element in wide-band filters because it combines 290 MHz bandwidth with a 310 V/µs slew rate. These characteristics support stages that must process frequency components above the useful range of ordinary precision amplifiers without severe slew-rate distortion. Component values should place the filter poles and closed-loop noise gain within the amplifier's stable operating region. Account for resistor and capacitor tolerances when specifying stopband attenuation, and use the manufacturer typical-performance curves to evaluate sensitivity to loading and parasitic capacitance.
推薦
Precision Test and Measurement
The THS4011ID suits fast measurement front ends that require both rapid settling and low signal distortion. The manufacturer datasheet specifies a 37 ns 0.1% settling time, 290 MHz bandwidth, and 7.5 nV/√Hz input-voltage noise density, providing a concrete basis for selecting an amplifier for high-bandwidth instrumentation. Place the device close to the measurement input to minimize added noise and reflection, and use a controlled source impedance to avoid gain errors. Check input bias-current effects, output-range limits, and settling behavior in the complete measurement chain rather than evaluating bandwidth in isolation.
推薦
Industrial Sensor Interfaces
The THS4011ID is useful in industrial sensor-interface stages where the source signal changes rapidly and the conditioning stage must preserve amplitude and phase relationships. Its 290 MHz bandwidth and 310 V/µs slew rate minimize closure within the signal bandwidth, while the 110 mA typical drive capability supports practical loading strategies. Use a feedback network tailored to the sensor's source impedance and place input protection components where their capacitance will not distort the intended response. For low-level sensors, pay particular attention to noise density, bias current, grounding, and shielding rather than using bandwidth alone as the selection criterion.
推薦
Low-Distortion Driver Stages
The THS4011ID can drive moderate loads when a design requires both low distortion and faster response than a conventional general-purpose amplifier. The manufacturer datasheet specifies 110 mA typical output-current drive, 290 MHz bandwidth, and -80 dBc distortion at 1 MHz under the applicable test condition. These values make the device relevant to buffer and driver stages with finite source impedance. Confirm the DC and AC output-voltage limits at the intended load, isolate large capacitive loads with a resistor, and use a low-inductance ground arrangement to prevent added ringing.
推薦
推薦產品摘要
工程參考資料，適用於 THS4011ID — 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 | THS4011CDG4 | THS4011IDG4 | THS4011CD |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Amplifier Architecture | Voltage feedback | Voltage feedback | Voltage feedback | Voltage feedback |
| Number of Circuits | 1 circuit | 1 circuit | 1 circuit | 1 circuit |
| Bandwidth | 290 MHz | 290 MHz | 290 MHz | 290 MHz |
| Slew Rate | 310 V/µs | 310 V/µs | 310 V/µs | 310 V/µs |
| Settling Time | 37 ns to 0.1% | 37 ns to 0.1% | 37 ns to 0.1% | 37 ns to 0.1% |
| Supply Current | 7.8 mA per channel | 7.8 mA per channel | 7.8 mA per channel | 7.8 mA per channel |
| Output Drive Current | 110 mA typical | 110 mA typical | 110 mA typical | 110 mA typical |
主要差異化特點
- High-speed settling combined with low distortion (對比THS4011CDG4)
- Single-channel high-speed amplifier in the same 8-pin SOIC footprint (對比THS4011IDG4)
- Moderate output drive for high-speed signal paths (對比THS4011CD)
設計說明
Place THS4011ID input, output, feedback, and decoupling connections directly beneath or adjacent to the corresponding package pins. At 290 MHz bandwidth, PCB trace inductance and capacitance can alter gain, add ringing, or reduce stability. Use a continuous ground plane, short return paths, and carefully controlled component placement. The 7.5 nV/√Hz noise specification does not prevent additional noise from long input loops or unstable grounding.
Do not assume that the 290 MHz small-signal bandwidth guarantees usable low-distortion bandwidth at every gain. Noise gain, feedback resistors, load capacitance, and output-current demand can shift stability and distortion behavior. Use series isolation resistors when driving capacitive loads, and verify both time-domain settling and frequency-domain response with the final source and load impedances.
Use local supply bypassing with short ground returns, and account for 7.8 mA supply current per channel when defining the power budget. The ±5 V operating configuration does not eliminate transient-current demands caused by the 310 V/µs slew rate and 110 mA drive capability. Keep the power-return loop compact so load-current transients do not modulate the analog ground reference seen by the amplifier.
Set the voltage-feedback network according to the required noise gain and check resistor-parasitic capacitance, especially when using high closed-loop gain. Keep feedback components physically close to the amplifier and avoid routing the high-impedance input alongside the output. If a source presents significant capacitance, place a small isolation resistor at the input and include that resistance in the expected bandwidth and settling calculations.
合規資訊
Compliance status was not stated in the verified product information. The legacy green ordering suffix on THS4011IDG4 is not treated as proof of the complete current compliance profile.