OPA689P - 720MHz High-Gain Voltage Feedback Amp | TI
MPN： OPA689P ✗ 停產OPA689P 概覽
What is a voltage-feedback operational amplifier? It is an analog linear amplifier that uses negative feedback to set closed-loop gain from external resistors. In the broader semiconductor hierarchy, an operational amplifier belongs to the linear amplifier, analog IC, and signal-conditioning categories. Its bandwidth and slew rate determine how quickly it can amplify small differential signals while preserving amplitude and phase accuracy.
The verified device data identifies the OPA689P as a voltage-feedback amplifier with one circuit, 720 MHz gain-bandwidth product, 1600 V/us slew rate, 280 MHz minus-3 dB bandwidth, 8 uA input bias current, and 1 mV input offset voltage. The listed supply current is 15.8 mA, while the exact supply-voltage range and detailed electrical limits require manufacturer datasheet confirmation.
OPA689P applications include broadband analog instrumentation, pulse and waveform conditioning, video or communications interface stages, high-gain signal amplification, and laboratory test systems. Its 1600 V/us slew rate can support fast transitions, but the circuit must still observe package, bandwidth, output-swing, stability, and thermal constraints documented by the manufacturer.
For PCB implementation, use a short, controlled feedback path and minimize parasitic capacitance and inductance. Place compensation, gain-setting, and decoupling components close to the relevant pins. Avoid long traces or unterminated cable runs at high frequency; controlled impedance and suitable source and load terminations are important. The exact pinout and recommended operating conditions are marked when absent from the supplied verified records.
This page combines the supplied distributor and manufacturer-search information with packaging, lifecycle, sourcing, and design guidance. It is intended to support initial component selection while engineers verify the official datasheet and application requirements before production release.
直接替換替代品，適用於 OPA689P — 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。
此系列的變體
與下列產品可直接替換的同系列型號： OPA689P （相同外形與佔位） — 差異在於 Input Offset Voltage, Mounting Type, Package, Slew Rate.
OPA689P 最大額定值與電氣特性
| Amplifier Type | Voltage Feedback Amplifier |
| Number of Circuits | 1 |
| Gain Bandwidth Product | 720 MHz |
| -3 dB Bandwidth | 280 MHz |
| Slew Rate | 1600 V/us |
| Input Bias Current | 8 uA |
| Input Offset Voltage | 1 mV |
| 供應電流 | 15.8 mA |
| 封裝 | 8-PDIP (0.300 inch, 7.62 mm) |
| 安裝類型 | Through-hole |
| AEC-Q100 Qualification | not_applicable |
| 生命週期狀態 | Obsolete |
OPA689P 8-pdip (0.300 inch, 7.62 mm) 腳位配置指南
OPA689P（8-pdip (0.300 inch, 7.62 mm) 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： OPA689P.
請參閱 資料表 以查看完整腳位配置。
典型應用
OPA689P 適用於 6 應用s: Broadband Instrumentation, Pulse and Waveform Conditioning, Communications Interface, Video and Display Signal Conditioning, Laboratory Signal Generators, High-Gain Analog Signal Conditioning.
Broadband Instrumentation
OPA689P fits broadband instrumentation front ends when the signal chain needs substantial bandwidth and fast transient response. Its verified 720 MHz gain-bandwidth product and 1600 V/us slew rate can support high-frequency measurement and signal-conditioning stages, provided the closed-loop gain, output swing, and load are compatible with the manufacturer’s limits. Place the feedback network close to the device and use controlled impedance to prevent parasitic feedback or ringing. Because the part is obsolete and several operating limits are [DATA_NEEDED: supply and output parameters], validate the complete operating envelope before production use.
推薦
Pulse and Waveform Conditioning
The OPA689P is suitable for pulse conditioning and waveform amplification where edge speed matters. The listed 1600 V/us slew rate provides a concrete starting point for evaluating required rise and fall times, while the 720 MHz gain-bandwidth product determines usable closed-loop bandwidth. Keep source and load impedances controlled, terminate long interconnect paths, and verify output swing against the pulse amplitude. The verified records do not provide the complete output-voltage or supply limits, so the circuit must be checked against the official datasheet before use.
推薦
Communications Interface
OPA689P can serve as a high-bandwidth communications interface amplifier when the design requires a voltage-feedback topology and rapid signal transitions. Its verified 720 MHz gain-bandwidth product supports wideband analog stages, but communications designs must also account for input common-mode range, output swing, supply voltage, noise, and stable feedback compensation. Route the high-frequency path with short traces and appropriate terminations to reduce reflections and preserve phase margin. The obsolete lifecycle status makes it more appropriate for existing equipment or controlled legacy supply than for a new platform.
推薦
Video and Display Signal Conditioning
OPA689P may be considered in video or display-related signal paths that need a wideband voltage-feedback amplifier and high slew rate. The listed 280 MHz minus-3 dB bandwidth and 1600 V/us slew rate are useful initial indicators for broadband waveform fidelity, although the exact usable bandwidth depends on closed-loop gain and loading. Keep the amplifier close to the source and load, minimize capacitance at high-impedance nodes, and verify settling and distortion requirements. Video systems often demand strict output swing and impedance details, so the missing datasheet values must be resolved before release.
推薦
Laboratory Signal Generators
OPA689P is relevant to laboratory signal-generation and test circuits where fast output transitions and high closed-loop bandwidth are useful. The 720 MHz gain-bandwidth product provides a basis for choosing a suitable feedback network, and the 1600 V/us slew rate can reduce rise-time limitation in selected operating points. Designers should still check output compliance, load capacitance, supply headroom, and stability with the exact external resistor and capacitor values. Because the device is obsolete, prototype work should include a planned replacement or supply-risk review rather than relying on indefinite legacy procurement.
推薦
High-Gain Analog Signal Conditioning
OPA689P can amplify small differential signals in high-gain analog signal-conditioning stages when high speed is more important than precision offset or low noise. The listed 1 mV input offset voltage becomes increasingly important as closed-loop gain rises, so system error budgets should include it explicitly. The 8 uA input bias current should be checked against source impedance and leakage. Use short, symmetric feedback routing and provide suitable compensation according to the manufacturer’s guidance. Confirm that the target signal bandwidth and output level remain within the unverified [DATA_NEEDED] operating limits.
推薦
工程參考資料，適用於 OPA689P — 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 | NE5532P |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | 8-PDIP (0.300 inch, 7.62 mm) | PDIP-8; exact package match not verified |
主要差異化特點
- High gain-bandwidth product (對比NE5532P)
- High slew rate (對比NE5532P)
- Obsolete lifecycle risk (對比NE5532P)
設計說明
Keep the feedback loop short and place gain-setting resistors close to the amplifier pins. At the verified 720 MHz gain-bandwidth product, PCB trace inductance and capacitance can alter phase margin and cause oscillation. Use a continuous ground reference, minimize routing around the input and feedback nodes, and verify the assembled layout with appropriate high-speed measurement equipment.
Terminate source and load paths deliberately when using the listed 1600 V/us slew rate. Long cables, uncontrolled impedance, and capacitive loading can create reflections or reduce usable bandwidth. The [DATA_NEEDED: input and output impedance values] should be obtained from the manufacturer datasheet before defining source, load, or cable-termination requirements.
Supply bypassing should be placed close to the device and selected using the manufacturer’s recommended values. The verified record lists 15.8 mA supply current, but it does not provide supply voltage limits, output swing, or maximum output current. Those missing values are essential for rail selection and thermal design; do not infer safe limits from the package description alone.
合規資訊
The supplied verified records do not state RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable to the supplied general-purpose amplifier information.
