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運算放大器 (op amps)
高速運算放大器 (GBW ≥ 50 MHz)

BUF634A

現行

210 MHz、250mA 高速緩衝器

立即訂購
產品規格表

BUF634A

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) 4.5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 210 BW at Acl (MHz) 210 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 3750 Vn at flatband (typ) (nV√Hz) 3.4 Vn at 1 kHz (typ) (nV√Hz) 3.4 Iq per channel (typ) (mA) 8.5 Vos (offset voltage at 25°C) (max) (mV) 60 Rail-to-rail No Features Adjustable BW/IQ/IOUT Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 2000000 Offset drift (typ) (µV/°C) 175 Iout (typ) (mA) 250 2nd harmonic (dBc) -77 3rd harmonic (dBc) -77 Frequency of harmonic distortion measurement (MHz) 0.02
Architecture Open Loop/Buffer Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 GBW (typ) (MHz) 210 BW at Acl (MHz) 210 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 3750 Vn at flatband (typ) (nV√Hz) 3.4 Vn at 1 kHz (typ) (nV√Hz) 3.4 Iq per channel (typ) (mA) 8.5 Vos (offset voltage at 25°C) (max) (mV) 60 Rail-to-rail No Features Adjustable BW/IQ/IOUT Rating Catalog Operating temperature range (°C) -40 to 125 Input bias current (max) (pA) 2000000 Offset drift (typ) (µV/°C) 175 Iout (typ) (mA) 250 2nd harmonic (dBc) -77 3rd harmonic (dBc) -77 Frequency of harmonic distortion measurement (MHz) 0.02
VSON (DRB) 8 9 mm² (3 mm × 3 mm) HSOIC (DDA) 8 29.4 mm² (4.9 mm × 6 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Pin-Selected Bandwidth: 35 MHz to 210 MHz
  • High Output Current: 250 mA
  • Slew Rate: 3750 V/µs
  • Low Quiescent Current: 1.5 mA (35-MHz BW)
  • Wide Supply Range: ±2.25 V to ±18 V
  • Internal Output Current Limit
  • Thermal Shutdown Protection
  • Available in Packages with Thermal Pad
  • Extended Temperature Operation: –40°C to +125°C
  • Pin-Selected Bandwidth: 35 MHz to 210 MHz
  • High Output Current: 250 mA
  • Slew Rate: 3750 V/µs
  • Low Quiescent Current: 1.5 mA (35-MHz BW)
  • Wide Supply Range: ±2.25 V to ±18 V
  • Internal Output Current Limit
  • Thermal Shutdown Protection
  • Available in Packages with Thermal Pad
  • Extended Temperature Operation: –40°C to +125°C

The BUF634A device is a high-performance, high-fidelity, open-loop buffer that is capable of driving 250 mA of output current. The BUF634A is a 36-V device with an adjustable bandwidth of 35 MHz to 210 MHz, which is accomplished by varying the value of an external resistor between the V– and BW pins.

The BUF634A device can be used as a standalone open-loop driver, or used inside the feedback loop of a precision op amp to provide both high-precision and large output current drive with improved capacitive load drive.

For low-power applications, the BUF634A device operates on a 1.5-mA quiescent current with a 250-mA output, 3750-V/µs slew rate, and 35-MHz bandwidth. The device consumes 8.5-mA quiescent current in wide-bandwidth mode with a 210-MHz bandwidth. The BUF634A is fully protected by an internal current limit in its output stage and by thermal shutdown, making the device rugged and easy to use.

The BUF634A device is rated to function over the extended industrial temperature range of –40°C to +125°C. The BUF634A comes in three packages: D (SOIC), DRB (VSON), and DDA (HSOIC). The DRB (VSON) and DDA (HSOIC) packages have excellent thermal performance resulting from the thermal pad on the bottom side. The DRB package comes in a very small form factor of 3.0 mm × 3.0 mm, making the device a very suitable option for portable and size-constrained applications.

The BUF634A device is a high-performance, high-fidelity, open-loop buffer that is capable of driving 250 mA of output current. The BUF634A is a 36-V device with an adjustable bandwidth of 35 MHz to 210 MHz, which is accomplished by varying the value of an external resistor between the V– and BW pins.

The BUF634A device can be used as a standalone open-loop driver, or used inside the feedback loop of a precision op amp to provide both high-precision and large output current drive with improved capacitive load drive.

For low-power applications, the BUF634A device operates on a 1.5-mA quiescent current with a 250-mA output, 3750-V/µs slew rate, and 35-MHz bandwidth. The device consumes 8.5-mA quiescent current in wide-bandwidth mode with a 210-MHz bandwidth. The BUF634A is fully protected by an internal current limit in its output stage and by thermal shutdown, making the device rugged and easy to use.

The BUF634A device is rated to function over the extended industrial temperature range of –40°C to +125°C. The BUF634A comes in three packages: D (SOIC), DRB (VSON), and DDA (HSOIC). The DRB (VSON) and DDA (HSOIC) packages have excellent thermal performance resulting from the thermal pad on the bottom side. The DRB package comes in a very small form factor of 3.0 mm × 3.0 mm, making the device a very suitable option for portable and size-constrained applications.
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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 BUF634A 36-V, 210-MHz, 250-mA Output, High-Speed Buffer datasheet (Rev. F) PDF | HTML 2021/5/18
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
證書 BUF634ADRBEVM EU Declaration of Conformity (DoC) 2020/8/3
證書 BUF634ADDAEVM EU Declaration of Conformity (DoC) 2020/8/3
Application brief Pairing up Op Amp and Buffer for Higher Output Power Plus Speed in ATE 2019/6/7

設計與開發

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開發板

BUF634ADDAEVM — 210-MHz、250-mA 高速緩衝器評估模組

BUF634ADDAEVM 是採用 DDA (8 針腳 SO8，具導熱片) 封裝之 BUF634A 高速緩衝器的評估模組 (EVM)。BUF634ADDAEVM 具有兩個 BUF634AIDDA 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 (...)
使用指南: PDF | HTML
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開發板

BUF634ADEVM — BUF634AD 高速緩衝器評估模組

BUF634ADEVM 是一款適用於 D（8 針腳 SOIC）封裝 BUF634A 高速緩衝器的評估模組 (EVM)。BUF634ADEVM 具有兩個 BUF634A 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
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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。
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模擬型號

BUF634A for PSPICE Library (Rev. A)

SBOMB63A.ZIP (30 KB) - PSpice 模型
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模擬型號

BUF634A TINA-TI SPICE Model (Rev. B)

SBOMAY2A (17 KB) - TINA-TI Spice 模型
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參考設計

TIDA-060029 — LCR 測試儀類比前端參考設計

此參考設計 TIDA-060029 展示了使用自動平衡阻抗測量方法，且適用於 LCR 儀表應用的類比訊號鏈解決方案。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
VSON (DRB) 8 Ultra Librarian
HSOIC (DDA) 8 Ultra Librarian
SOIC (D) 8 Ultra Librarian
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