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高速運算放大器 (GBW ≥ 50 MHz)

BUF634

現行

250-mA 高速緩衝器 - 請參閱 BUF634A 瞭解升級版本

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BUF634A 現行 210 MHz、250mA 高速緩衝器 Higher slew rate (3750 V/µs) and wider bandwidth (210 MHz) at a 40% lower quiescent current (8.5 mA)

BUF634

現行
產品規格表 立即訂購

產品詳細資料

Architecture Open Loop/Buffer Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 180 BW at Acl (MHz) 180 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 2000 Vn at flatband (typ) (nV√Hz) 4 Vn at 1 kHz (typ) (nV√Hz) 4 Iq per channel (typ) (mA) 15 Vos (offset voltage at 25°C) (max) (mV) 100 Rail-to-rail No Features Adjustable BW/IQ/IOUT Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 20000000 Offset drift (typ) (µV/°C) 100 Iout (typ) (mA) 250 2nd harmonic (dBc) 75 3rd harmonic (dBc) 83 Frequency of harmonic distortion measurement (MHz) 1
Architecture Open Loop/Buffer Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 180 BW at Acl (MHz) 180 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 2000 Vn at flatband (typ) (nV√Hz) 4 Vn at 1 kHz (typ) (nV√Hz) 4 Iq per channel (typ) (mA) 15 Vos (offset voltage at 25°C) (max) (mV) 100 Rail-to-rail No Features Adjustable BW/IQ/IOUT Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 20000000 Offset drift (typ) (µV/°C) 100 Iout (typ) (mA) 250 2nd harmonic (dBc) 75 3rd harmonic (dBc) 83 Frequency of harmonic distortion measurement (MHz) 1
TO-220 (KC) 5 45.212 mm² (10.16 mm × 4.45 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) TO-263 (KTT) 5 154.8384 mm² (10.16 mm × 15.24 mm)
  • A newer version of this device is now available: BUF634A
  • High output current: 250mA
  • Slew rate: 2000V/µs
  • Pin-selected bandwidth: 30MHz to 180MHz
  • Low quiescent current: 1.5mA (30MHz BW)
  • Wide supply range: ±2.25V to ±18V
  • Internal current limit
  • Thermal shutdown protection
  • Packages:
    • 5-pin SOIC
    • 5-pin TO-220
    • 5-pin TO-263 surface-mount
  • A newer version of this device is now available: BUF634A
  • High output current: 250mA
  • Slew rate: 2000V/µs
  • Pin-selected bandwidth: 30MHz to 180MHz
  • Low quiescent current: 1.5mA (30MHz BW)
  • Wide supply range: ±2.25V to ±18V
  • Internal current limit
  • Thermal shutdown protection
  • Packages:
    • 5-pin SOIC
    • 5-pin TO-220
    • 5-pin TO-263 surface-mount

The BUF634 is a high-speed, unity-gain, open-loop buffer recommended for a wide range of applications. The BUF634 can be used inside the feedback loop of op amps to increase output current, eliminate thermal feedback, and improve capacitive load drive.

For low-power applications, the BUF634 operates on 1.5mA quiescent current with 250mA output, 2000V/µs slew rate, and 30MHz bandwidth. Bandwidth can be adjusted from 30MHz to 180MHz by connecting a resistor between V– and the BW pin.

Output circuitry is fully protected by internal current limit and thermal shutdown, making the device rugged and easy to use.

The BUF634 is available in a variety of packages to meet mechanical and power-dissipation requirements. Types include SOIC‑8 surface-mount, 5‑lead TO‑220, and a 5‑lead TO‑263 (DDPAK) surface-mount plastic power packages.

The BUF634 is a high-speed, unity-gain, open-loop buffer recommended for a wide range of applications. The BUF634 can be used inside the feedback loop of op amps to increase output current, eliminate thermal feedback, and improve capacitive load drive.

For low-power applications, the BUF634 operates on 1.5mA quiescent current with 250mA output, 2000V/µs slew rate, and 30MHz bandwidth. Bandwidth can be adjusted from 30MHz to 180MHz by connecting a resistor between V– and the BW pin.

Output circuitry is fully protected by internal current limit and thermal shutdown, making the device rugged and easy to use.

The BUF634 is available in a variety of packages to meet mechanical and power-dissipation requirements. Types include SOIC‑8 surface-mount, 5‑lead TO‑220, and a 5‑lead TO‑263 (DDPAK) surface-mount plastic power packages.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 BUF634 250mA High-Speed Buffer datasheet (Rev. C) PDF | HTML 2024/3/1
應用說明 BUF634A and BUF634 Thermal Performance Comparison PDF | HTML 2021/10/18
Application brief Optimizing LCR Meter Front-End Design for Accurate Impedance Measurements PDF | HTML 2021/1/20
電子書 The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML 2017/3/28
應用說明 Combining an Amplifier with the BUF634 2000/10/2
應用說明 Add Current Limit to the BUF634 2000/9/27
應用說明 Power Amplifier Stress and Power Handling Limitations 2000/9/27

設計與開發

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開發板

BUF634ADRBEVM — 250-mA 高速緩衝器評估模組

BUF634ADRBEVM 是一款採用 DRB (8 針腳 DFN) 封裝的 BUF634A 高速緩衝器評估模組 (EVM)。BUF634ADRBEVM 具有兩個 BUF634AIDRB 裝置，可快速展示緩衝器的功能性和多元用途。或者，也可在複合迴路中將緩衝器配置為雙 SOIC 放大器的輸出。EVM 隨時可透過板載連接器來連接電源、訊號源和測試儀器。預設配置使用分離式電源和超微型 A 版 (SMA) 輸入和輸出連接器，具有 50 Ω 輸出阻抗，適用於標準測試設備。EVM 可以輕鬆針對其他連接器及單電源供電運作進行配置。雙通道路徑配置也可用於 TM 音訊輸入插孔和 3.5 mm 輸出插孔。
使用指南: PDF | HTML
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模擬型號

BUF634 PSpice Model (Rev. B)

SBOM003B.ZIP (62 KB) - PSpice 模型
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模擬型號

BUF634 TINA-TI Reference Design (Rev. C)

SBOC135C.TSC (405 KB) - TINA-TI 參考設計
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模擬型號

BUF634 TINA-TI Spice Model (Rev. B)

SBOM204B.ZIP (10 KB) - TINA-TI Spice 模型
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
TO-220 (KC) 5 Ultra Librarian
SOIC (D) 8 Ultra Librarian
TO-263 (KTT) 5 Ultra Librarian
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