THS3091D - 235MHz Current-Feedback Op Amp | Texas Instruments
Артикул: THS3091D ✗ Снят с производстваTHS3091D Обзор
A current-feedback operational amplifier is a voltage-input, current-output amplifier architecture whose closed-loop bandwidth is primarily controlled by the feedback resistor rather than by a single fixed gain-bandwidth product. In the THS3091D, this architecture supports high-speed operation while maintaining low distortion. The result is useful where conventional voltage-feedback amplifiers would require excessive gain, where signal amplitude and slew rate must remain accurate, or where a capacitive load must be driven through a carefully designed feedback network.
Key features include a 235 MHz bandwidth, 7300 V/us slew rate, and a high-voltage capability covering ±5 V to ±15 V supplies. The current-feedback topology provides high speed without relying on a voltage-feedback gain-bandwidth relationship of the same form. Its low-distortion characteristic supports signal-chain designs in which waveform fidelity and amplitude linearity are more important than micropower operation or rail-to-rail input/output capability.
The THS3091D is optimized for high-voltage, large-signal output stages. Its supply range permits bipolar or split-supply operation when the circuit requires an output centered around ground, while dual positive supplies can also be used when the signal and output are referenced above ground. Because it is a current-feedback device, feedback-resistor selection is central to achieving the intended bandwidth, gain, and stability rather than treating the feedback network as a passive gain-setting detail.
Typical uses include semiconductor pin drivers, power-FET gate drivers, VDSL line-driver outputs, high-voltage arbitrary waveform generation, and instrumentation requiring wide-band signal amplification. In each case, the 235 MHz bandwidth and 7300 V/us slew rate provide the speed needed to preserve large-amplitude waveforms, while the low-distortion architecture helps maintain signal fidelity. The 8-pin SOIC package permits conventional surface-mount assembly.
Designers should use the manufacturer datasheet for the complete pin assignment, recommended feedback values, output-current capability, input and output range, and stability constraints. The THS3091D is not a rail-to-rail input or output device, so input common-mode and output swing requirements must be checked against the selected supply voltages. Current-feedback amplifiers can be sensitive to feedback-component tolerances, parasitic capacitance, and capacitive loading.
This page consolidates the verified THS3091D product data, lifecycle information, source links, and selection guidance. It also distinguishes the SOIC THS3091D from other package or orderable variants and records unavailable electrical details explicitly rather than inferring them from unrelated THS309x-family members.
Аналоги без доработки для THS3091D — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с THS3091D (тот же форм-фактор и посадочное место) — отличается по Amplifier Type, Number of Circuits, Product Type, Slew Rate, Supply Voltage Range.
THS3091DG4
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
THS3091DR
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
THS3091D Максимальные параметры и электрические характеристики
| Amplifier Type | Single current-feedback operational amplifier |
| Number of Circuits | 1 circuit |
| Gain-Bandwidth Product | 235 MHz |
| Slew Rate | 7300 V/us |
| Supply Voltage Range | ±5 V to ±15 V |
| Total Supply Voltage | 10 V to 30 V |
| Корпус | 8-pin SOIC |
| Тип монтажа | Surface mount |
| Product Type | High-voltage, low-distortion operational amplifier |
| Feedback Topology | Current feedback |
| Output Signal Type | Large linear output signal |
| Primary Applications | Pin drivers, power-FET drivers, VDSL line drivers |
| Additional Application | Arbitrary waveform generation |
| RoHS Compliance | unknown |
| REACH Compliance | unknown |
| AEC-Q100 Qualification | not_applicable |
Руководство по цоколевке THS3091D в корпусе 8-pin soic
Цоколевка для THS3091D (корпус 8-pin soic). Этот аналоговый компонент имеет выводы входа, выхода и питания. Обратитесь к техническому описанию производителя для конфигураций выводов балансировки нуля, коррекции и разрешения. Идеально подходит для схем обработки сигналов и усилителей.
Нет подробных данных о распиновке для THS3091D.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
THS3091D подходит для 6 применениеs: Power-FET Gate Drivers, Semiconductor Pin Drivers, VDSL Line Drivers, Arbitrary Waveform Generation, Wide-Band Instrumentation, High-Speed Analog Signal Conditioning.
Power-FET Gate Drivers
The THS3091D fits wide-band power-FET drive stages because its verified 235 MHz gain-bandwidth product and 7300 V/us slew rate preserve fast transitions through large output signals. It can be placed in a current-feedback driver stage ahead of a power MOSFET, where the goal is to control gate voltage accurately while suppressing distortion. The ±5 V to ±15 V operating range also allows a bipolar drive strategy when the gate must swing above and below ground. The principal design checks are output-current capability, gate capacitance, acceptable gate voltage, and stable feedback values; those detailed limits are not present in the supplied verified data and must be taken from the manufacturer datasheet.
Рекомендуется
Semiconductor Pin Drivers
The THS3091D is suitable for driving semiconductor test or package pins that require large, linear output signals at high speed. Its 235 MHz bandwidth and 7300 V/us slew rate help the output follow a rapidly changing command signal without excessive rise-time distortion. The single current-feedback amplifier can form the final stage of a larger pin-driver chain, with feedback components chosen according to the manufacturer guidance for the target gain and load. Because the supplied excerpts do not specify output-current limits, input range, or output swing, engineers must verify those values before calculating drive strength or constructing a cable and fixture output stage.
Рекомендуется
VDSL Line Drivers
The THS3091D aligns with VDSL line-driver requirements because it combines a 235 MHz gain-bandwidth product, a 7300 V/us slew rate, and operation from ±5 V to ±15 V. Those characteristics support broadband waveform amplification with larger signal levels than a conventional low-voltage operational amplifier can provide. In a line-driver output stage, the amplifier may be followed by passive attenuation, coupling, or balancing networks, so its interaction with the line impedance and external capacitance is critical. The exact recommended feedback network, load range, and distortion limits must be obtained from the manufacturer datasheet before sign-off.
Рекомендуется
Arbitrary Waveform Generation
The THS3091D can serve as a high-speed output amplifier in an arbitrary waveform generator when large, linear signals are required. Its 235 MHz gain-bandwidth product and 7300 V/us slew rate provide ample speed for rapid waveform transitions, while the low-distortion architecture is intended to preserve signal shape. The amplifier would typically follow a DAC or other waveform source and use a current-feedback network to establish the required gain and bandwidth. Engineers should confirm output swing and current against the selected load, minimize feedback-loop capacitance, and verify that the complete generator remains distortion-free at the operating frequency and amplitude.
Рекомендуется
Wide-Band Instrumentation
The THS3091D is appropriate for instrumentation front ends that need to preserve the amplitude and phase of signals extending into the high-frequency region. Its 235 MHz bandwidth and 7300 V/us slew rate reduce timing and slew-related errors compared with a general-purpose amplifier, while the low-distortion current-feedback design supports accurate signal reproduction. A practical implementation should account for the source impedance, select a manufacturer-recommended feedback resistor, and place the feedback loop close to the device in an 8-pin SOIC footprint. Input common-mode range, output swing, noise, and exact distortion curves are unavailable in the supplied excerpts and require datasheet verification.
Рекомендуется
High-Speed Analog Signal Conditioning
The THS3091D can condition high-speed analog signals when the application benefits from high slew rate and low distortion rather than micropower consumption or rail-to-rail operation. The 235 MHz gain-bandwidth product and 7300 V/us slew rate make the device suitable for pre-driver and general signal-shaping stages operating from ±5 V to ±15 V. Its current-feedback topology requires careful gain and stability planning, including accurate feedback resistors and controlled trace capacitance. Before using it with sensors, transducers, or external amplifiers, verify the input common-mode range and output swing against the actual signal because those limits are not included in the supplied verified snippets.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для THS3091D — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | THS3091DG4 | THS3091DR |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-pin SOIC | 8-pin SOIC | 8-pin SOIC |
| Amplifier Type | Single current-feedback operational amplifier | THS3091 current-feedback operational amplifier | THS3091 current-feedback operational amplifier |
| Number of Circuits | 1 circuit | 1 circuit | 1 circuit |
| Gain-Bandwidth Product | 235 MHz | 235 MHz | 235 MHz |
| Slew Rate | 7300 V/us | 7300 V/us | 7300 V/us |
| Supply Voltage Range | ±5 V to ±15 V | ±5 V to ±15 V | ±5 V to ±15 V |
| Primary Applications | Pin drivers, power-FET drivers, and VDSL line drivers | THS3091 high-voltage, low-distortion applications | THS3091 high-voltage, low-distortion applications |
Ключевые отличия
- High-speed large-signal capability (против THS3091DG4)
- High-voltage current-feedback operation (против THS3091DR)
- Purpose-built low-distortion driver positioning (против THS3091DDAR)
Заметки по проектированию
Keep the THS3091D feedback loop short and place feedback resistors close to the amplifier pins. Current-feedback amplifiers can be sensitive to parasitic capacitance around the feedback network, so avoid routing that loop across a split ground plane or beneath unrelated high-current paths. Follow the manufacturer recommended-application schematic for decoupling and pin placement, and preserve the indicated polarity of the input and feedback connections. A compact feedback loop is particularly important because the device supports a 235 MHz gain-bandwidth product and a 7300 V/us slew rate.
Do not treat the THS3091D as a rail-to-rail operational amplifier or apply conventional voltage-feedback gain-bandwidth calculations. It is a current-feedback device, so the feedback resistor must be selected using the manufacturer guidance for the intended gain, bandwidth, and load. Also verify output swing and output current before driving a power-FET gate, pin-driver load, or VDSL output network. The verified excerpts establish the ±5 V to ±15 V supply range but do not provide complete input-range, swing, and current-limit tables.
Plan bypass capacitance and power distribution around the 8-pin SOIC using the manufacturer application circuit rather than generic values alone. The device is intended for high-voltage and large-signal operation, and supply or ground impedance can influence output symmetry, distortion, and high-speed stability. Keep the supply return path short, use low-inductance connections where possible, and assess resistor power dissipation separately from the amplifier's own thermal requirements. The supplied verified data does not include total quiescent current or thermal resistance, so those values must be obtained before completing a thermal design.
A shared THS3091 family name does not prove that an alternative orderable suffix has the same PCB footprint and pin compatibility. THS3091DDAR is discussed as a replacement candidate after THS3091D end-of-life, but the verified excerpts do not conclusively establish an identical package. Compare the approved mechanical drawing, pin numbering, exposed-pad or lead configuration, electrical ratings, and lifecycle status for every proposed substitute before committing a new production design.
Информация о соответствии
The supplied verified search results do not contain explicit RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive-qualification statements. The AEC-Q100 field is not applicable because the THS3091 is a general-purpose operational amplifier.