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OPA2991 現行 雙路、40V、4.5MHz、低功耗運算放大器 Rail-to-Rail I/O, wider temperature range (-40°C to 125°C), higher slew rate (4.5 V/us), wider voltage range (2.7 V to 40 V), lower noise (10.8 nV/√Hz)

產品詳細資料

Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 30 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 10 Rail-to-rail No GBW (typ) (MHz) 3 Slew rate (typ) (V/µs) 18 Vos (offset voltage at 25°C) (max) (mV) 0.5 Iq per channel (typ) (mA) 2.6 Vn at 1 kHz (typ) (nV√Hz) 19 Rating Catalog Operating temperature range (°C) 0 to 70 Offset drift (typ) (µV/°C) 8 Input bias current (max) (pA) 200 CMRR (typ) (dB) 93 Iout (typ) (A) 0.05 Architecture FET Input common mode headroom (to negative supply) (typ) (V) 4 Input common mode headroom (to positive supply) (typ) (V) -4 Output swing headroom (to negative supply) (typ) (V) 1.5 Output swing headroom (to positive supply) (typ) (V) -1.5
Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 30 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 10 Rail-to-rail No GBW (typ) (MHz) 3 Slew rate (typ) (V/µs) 18 Vos (offset voltage at 25°C) (max) (mV) 0.5 Iq per channel (typ) (mA) 2.6 Vn at 1 kHz (typ) (nV√Hz) 19 Rating Catalog Operating temperature range (°C) 0 to 70 Offset drift (typ) (µV/°C) 8 Input bias current (max) (pA) 200 CMRR (typ) (dB) 93 Iout (typ) (A) 0.05 Architecture FET Input common mode headroom (to negative supply) (typ) (V) 4 Input common mode headroom (to positive supply) (typ) (V) -4 Output swing headroom (to negative supply) (typ) (V) 1.5 Output swing headroom (to positive supply) (typ) (V) -1.5
PDIP (P) 8 92.5083 mm² 9.81 x 9.43
  • Low Input Offset Voltage . . . 0.5 mV Max
  • Low Power Consumption
  • Wide Common-Mode and Differential Voltage Ranges
  • Low Input Bias and Offset Currents
  • High Input Impedance . . . JFET-Input Stage
  • Internal Frequency Compensation
  • Latch-Up-Free Operation
  • High Slew Rate . . . 18 V/µs Typ
  • Low Total Harmonic Distortion
       0.003% Typ

  • Low Input Offset Voltage . . . 0.5 mV Max
  • Low Power Consumption
  • Wide Common-Mode and Differential Voltage Ranges
  • Low Input Bias and Offset Currents
  • High Input Impedance . . . JFET-Input Stage
  • Internal Frequency Compensation
  • Latch-Up-Free Operation
  • High Slew Rate . . . 18 V/µs Typ
  • Low Total Harmonic Distortion
       0.003% Typ

These JFET-input operational amplifiers incorporate well-matched high-voltage JFET and bipolar transistors in a monolithic integrated circuit. They feature low input offset voltage, high slew rate, low input bias and offset currents, and low temperature coefficient of input offset voltage. Offset-voltage adjustment is provided for the TL087 and TL088.

The C-suffix devices are characterized for operation from 0°C to 70°C, and the I-suffix devices are characterized for operation from –40°C to 85°C. The M-suffix devices are characterized for operation over the full military temperature range of –55°C to 125°C.

These JFET-input operational amplifiers incorporate well-matched high-voltage JFET and bipolar transistors in a monolithic integrated circuit. They feature low input offset voltage, high slew rate, low input bias and offset currents, and low temperature coefficient of input offset voltage. Offset-voltage adjustment is provided for the TL087 and TL088.

The C-suffix devices are characterized for operation from 0°C to 70°C, and the I-suffix devices are characterized for operation from –40°C to 85°C. The M-suffix devices are characterized for operation over the full military temperature range of –55°C to 125°C.

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類型 標題 日期
* Data sheet TL087, TL088, TL287, TL288 datasheet (Rev. B) 2004年 7月 19日
E-book The Signal e-book: A compendium of blog posts on op amp design topics 2017年 3月 28日

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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 (...)
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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。
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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。
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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。
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