首頁 放大器 運算放大器 (op amps) 一般用途運算放大器
首頁
放大器
運算放大器 (op amps)
一般用途運算放大器

LM8261

現行

單路、30-V、21-MHz 運算放大器

立即訂購
產品規格表

現在提供此產品的更新版本

open-in-new 比較替代產品
具備升級功能，可直接投入使用替代所比較的產品
最新 OPA994 現行 具有無限電容負載驅動功能的單路 32V、24MHz RRIO 高輸出電流 (125mA) 運算放大器 Wider supply range (2.7-V to 32-V), higher GBW (25 MHz), faster slew rate (18 V/µs), lower offset (1.5 mV), lower noise (12 nV/√Hz), lower bias current (100000 pA)

LM8261

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 22 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.5 Rail-to-rail In, Out GBW (typ) (MHz) 21 Slew rate (typ) (V/µs) 12 Vos (offset voltage at 25°C) (max) (mV) 5 Iq per channel (typ) (mA) 0.97 Vn at 1 kHz (typ) (nV√Hz) 15 Rating Catalog Operating temperature range (°C) -40 to 85 Offset drift (typ) (µV/°C) 2 Features High Cload Drive Input bias current (max) (pA) 2000000 CMRR (typ) (dB) 110 Iout (typ) (A) 0.053 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) -0.3 Input common mode headroom (to positive supply) (typ) (V) 0.1 Output swing headroom (to negative supply) (typ) (V) 0.09 Output swing headroom (to positive supply) (typ) (V) -0.17
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 22 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.5 Rail-to-rail In, Out GBW (typ) (MHz) 21 Slew rate (typ) (V/µs) 12 Vos (offset voltage at 25°C) (max) (mV) 5 Iq per channel (typ) (mA) 0.97 Vn at 1 kHz (typ) (nV√Hz) 15 Rating Catalog Operating temperature range (°C) -40 to 85 Offset drift (typ) (µV/°C) 2 Features High Cload Drive Input bias current (max) (pA) 2000000 CMRR (typ) (dB) 110 Iout (typ) (A) 0.053 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) -0.3 Input common mode headroom (to positive supply) (typ) (V) 0.1 Output swing headroom (to negative supply) (typ) (V) 0.09 Output swing headroom (to positive supply) (typ) (V) -0.17
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • (VS = 5 V, TA = 25°C, Typical Values
    Unless Specified)
  • GBWP 21 MHz
  • Wide Supply Voltage Range 2.5 V to 30 V
  • Slew Rate 12 V/µs
  • Supply Current 0.97 mA
  • Cap Load Limit Unlimited
  • Output Short Circuit Current 53 mA/ −75 mA
  • ±5% Settling Time 400 ns (500 pF, 100 mVPP Step)
  • Input Common Mode Voltage 0.3 V Beyond Rails
  • Input Voltage Noise 15nV/√Hz
  • Input Current Noise 1pA/√Hz
  • THD+N < 0.05%
  • (VS = 5 V, TA = 25°C, Typical Values
    Unless Specified)
  • GBWP 21 MHz
  • Wide Supply Voltage Range 2.5 V to 30 V
  • Slew Rate 12 V/µs
  • Supply Current 0.97 mA
  • Cap Load Limit Unlimited
  • Output Short Circuit Current 53 mA/ −75 mA
  • ±5% Settling Time 400 ns (500 pF, 100 mVPP Step)
  • Input Common Mode Voltage 0.3 V Beyond Rails
  • Input Voltage Noise 15nV/√Hz
  • Input Current Noise 1pA/√Hz
  • THD+N < 0.05%

The LM8261 is a Rail-to-Rail input and output Op Amp which can operate with a wide supply voltage range. This device has high output current drive, greater than Rail-to-Rail input common mode voltage range, unlimited capacitive load drive capability, and provides tested and guaranteed high speed and slew rate while requiring only 0.97 mA supply current. It is specifically designed to handle the requirements of flat panel TFT panel VCOM driver applications as well as being suitable for other low power, and medium speed applications which require ease of use and enhanced performance over existing devices.

Greater than Rail-to-Rail input common mode voltage range with 50 dB of Common Mode Rejection allows high side and low side sensing, among many applications, without concern over exceeding the range and with no compromise in accuracy. Exceptionally wide operating supply voltage range of 2.5 V to 30 V alleviates any concerns over functionality under extreme conditions and offers flexibility for use in multitude of applications. In addition, most device parameters are insensitive to power supply variations; this design enhancement is yet another step in simplifying its usage. The output stage has low distortion (0.05% THD+N) and can supply a respectable amount of current (15 mA) with minimal headroom from either rail (300 mV).

The LM8261 is offered in the space-saving SOT-23-5 package.

The LM8261 is a Rail-to-Rail input and output Op Amp which can operate with a wide supply voltage range. This device has high output current drive, greater than Rail-to-Rail input common mode voltage range, unlimited capacitive load drive capability, and provides tested and guaranteed high speed and slew rate while requiring only 0.97 mA supply current. It is specifically designed to handle the requirements of flat panel TFT panel VCOM driver applications as well as being suitable for other low power, and medium speed applications which require ease of use and enhanced performance over existing devices.

Greater than Rail-to-Rail input common mode voltage range with 50 dB of Common Mode Rejection allows high side and low side sensing, among many applications, without concern over exceeding the range and with no compromise in accuracy. Exceptionally wide operating supply voltage range of 2.5 V to 30 V alleviates any concerns over functionality under extreme conditions and offers flexibility for use in multitude of applications. In addition, most device parameters are insensitive to power supply variations; this design enhancement is yet another step in simplifying its usage. The output stage has low distortion (0.05% THD+N) and can supply a respectable amount of current (15 mA) with minimal headroom from either rail (300 mV).

The LM8261 is offered in the space-saving SOT-23-5 package.
filter 尋找其它 一般用途運算放大器
下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 7
類型 標題 日期
* Data sheet LM8261 Single RRIO High Output Current & Unlimited Cap Load Op Amp datasheet (Rev. J) PDF | HTML 2015年 1月 12日
E-book The Signal e-book: A compendium of blog posts on op amp design topics 2017年 3月 28日
Application note Generation of a VCOM buffer input using PWM signal 2015年 12月 21日
Application note Unlimited Cap Load Drive Op Amp Takes Guess Work Out of Design (Rev. C) 2013年 5月 7日
User guide LMH6321 PSOP & TO-263 Sin Open Loop HS Buffer Eval Brds (Rev. C) 2013年 5月 3日
Application note AN-1515 A Comprehensive Study of the Howland Current Pump (Rev. A) 2013年 4月 26日
Application note Unlimited Capacitive Load Drive Op Amp Takes Guesswork Out Of Design 2003年 3月 6日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

DIP-ADAPTER-EVM — DIP 轉接器評估模組

Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.

The (...)

使用指南: PDF
TI.com 無法提供
開發板

DIYAMP-EVM — 通用自製 (DIY) 放大器電路評估模組

The DIYAMP-EVM is a unique evaluation module (EVM) family that provides engineers and do it yourselfers (DIYers) with real-world amplifier circuits, enabling you to quickly evaluate design concepts and verify simulations. It is available in three industry-standard packages (SC70, SOT23, SOIC) and (...)

使用指南: PDF | HTML
View Options
開發板

LMH730216 — 適用於採用 5-6 針腳 SOT-23 封裝的高速單運算放大器的評估板

Texas Instruments offers this unpopulated Evaluation Board to aid in the evaluation and testing of high-speed Op Amps that are offered in the 5-/6-pin SOT-23 package. Resistors, capacitors, or any other surface-mount components can be easily mounted on this board in the desired circuit (...)

使用指南: PDF
TI.com 無法提供
模擬型號

LM8261 PSPICE Model

SNOM213.ZIP (2 KB) - PSpice Model
下載
模擬型號

LM8261 TINA Reference Design

SNOM668.ZIP (8 KB) - TINA-TI Reference Design
下載
模擬型號

LM8261 TINA-TI Spice Model

SNOM669.ZIP (1 KB) - TINA-TI Spice Model
下載
計算工具

ANALOG-ENGINEER-CALC — 類比工程師計算機

The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
View Options
設計工具

CIRCUIT060013 — 具有 T 網路回饋電路的反相放大器

此設計可反轉輸入訊號 VIN，並使用 1000 V/V 或 60 dB 訊號增益。具有 T 回饋網路的反相放大器可在沒有較小 R4 值或超大回饋電阻器值的情況下獲得高增益。
View Options
設計工具

CIRCUIT060015 — 可調式參考電壓電路

此電路結合反相及非反相放大器，讓參考電壓可從負輸入電壓向上調整至輸入電壓。可加入增益以提高最大負參考位準。
View Options
設計工具

CIRCUIT060074 — 具有比較器電路的高壓側電流感測

此高壓側電流感測解決方案使用一個具有軌對軌輸入共模範圍的比較器，若負載電流上升到 1 A 以上，便在比較器輸出 (COMP OUT) 建立過電流警示 (OC 警示) 訊號。此實作中的 OC 訊號為低電位作動。因此當超過 1-A 閾值時，比較器輸出會變低。實作磁滯後會在負載電流降低至 0.5 A (減少 50%) 時，讓 OC-Alert 返回邏輯高狀態。此電路利用開漏輸出比較器，為控制數位邏輯輸入針腳而進行電平轉換輸出高邏輯電平。對於需要驅動 MOSFET 開關閘極的應用，建議使用具推挽輸出的比較器。
View Options
模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
要求
模擬工具

TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
使用指南: PDF
View Options
參考設計

PMP31092 — 小巧的 140-W 全橋參考設計

此電源供應器為 140-W 全橋式參考設計，適用因平面變壓器而需要高密度和低元件高度的應用。此設計以硬性切換全橋拓撲為基礎，於二次側使用 Schottky 二極體並由 LM5045 驅動。採用平面變壓器以將體積和高度降到最低。印刷電路板 (PCB) 有六層，元件安裝於上方及下方。裝置專為在環境溫度 (TA) < 40°C 的額定負載下持續運作而設計。在較高環境溫度下，建議使用 200 每分鐘直線英呎 (LFM) 的最小氣流。
Test report: PDF
參考設計

PMP22396 — 適合汽車應用的 2460-W 雙向升壓轉換器參考設計

This reference design is a 2460-W bidirectional boost converter for automotive applications. The circuit is powered from the nominal 12-V battery to provide an output voltage of 48 V at 51.25 A. The design uses two dual-phase synchronous bidirectional controllers operating at a switching frequency (...)
Test report: PDF
電路圖: PDF
參考設計

PMP21943 — 適用於功率放大器的 48-V/25-A 負到正同步降壓-升壓參考設計

This reference design is a negative-to-positive synchronous buck-boost converter for power amplifier applications. The circuit is powered from the nominal -48-V system source to provide an output voltage of +48 V at 25 A. The design uses two dual synchronous boost controllers for 4-phase operation (...)
Test report: PDF
電路圖: PDF
參考設計

PMP21867 — 適用於功率放大器的 12-V/100-A 負到正同步降壓-升壓參考設計

This reference design is a negative-to-positive synchronous buck-boost converter for power amplifier applications. The circuit is powered from the nominal -48-V system source to provide an output voltage of +12 V at 100 A. The design uses two dual synchronous boost controllers for 4-phase (...)
Test report: PDF
電路圖: PDF
參考設計

PMP40500 — 54-VDC 輸入、12-V 42-A 輸出半橋參考設計

此 12-V、42-A 輸出半橋式參考設計適合有線網路園區與分公司交換器中的匯流排轉換器。此設計具高效率及各種故障保護 (過電流和短路)。設計採用 3 kVRMS 基本及功能隔離式閘極驅動器 UCC21220D、UCC21220AD、UCC21222D，及 5.7-kRMS 強化隔離式閘極驅動器 UCC21540D、UCC21540DWK 及 UCC21541DW 以提供效率比較。
Test report: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOT-23 (DBV) 5 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片