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運算放大器 (op amps)
一般用途運算放大器

LMV881

現行

單路、5.5-V、23-MHz、高輸出電流 (110-mA)、低雜訊 (9-nV/√Hz) 運算放大器

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產品規格表

LMV881

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) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.7 Rail-to-rail In to V-, Out GBW (typ) (MHz) 23 Slew rate (typ) (V/µs) 12 Vos (offset voltage at 25°C) (max) (mV) 1 Iq per channel (typ) (mA) 1.65 Vn at 1 kHz (typ) (nV√Hz) 9 Rating Catalog Operating temperature range (°C) -40 to 125 Offset drift (typ) (µV/°C) 0.7 Features EMI Hardened, Shutdown, Small Size Input bias current (max) (pA) 10 CMRR (typ) (dB) 94 Iout (typ) (A) 0.11 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -1.1 Output swing headroom (to negative supply) (typ) (V) 0.003 Output swing headroom (to positive supply) (typ) (V) -0.003
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.7 Rail-to-rail In to V-, Out GBW (typ) (MHz) 23 Slew rate (typ) (V/µs) 12 Vos (offset voltage at 25°C) (max) (mV) 1 Iq per channel (typ) (mA) 1.65 Vn at 1 kHz (typ) (nV√Hz) 9 Rating Catalog Operating temperature range (°C) -40 to 125 Offset drift (typ) (µV/°C) 0.7 Features EMI Hardened, Shutdown, Small Size Input bias current (max) (pA) 10 CMRR (typ) (dB) 94 Iout (typ) (A) 0.11 Architecture CMOS Input common mode headroom (to negative supply) (typ) (V) -0.1 Input common mode headroom (to positive supply) (typ) (V) -1.1 Output swing headroom (to negative supply) (typ) (V) 0.003 Output swing headroom (to positive supply) (typ) (V) -0.003
USON (NKK) 6 1.5 mm² 1.5 x 1
  • Unless Otherwise Noted, Typical Values at TA = 25°C, V+ = 3.3V
  • Supply Voltage 2.7V to 5.5V
  • Supply Current 1.65 mA
  • Shutdown Current 200 pA
  • Input Offset Voltage 1 mV Max
  • Input Bias Current 0.1 pA
  • GBW 23 MHz
  • EMIRR at 1.8 GHz 105 dB
  • Input Noise Voltage at 1 kHz 9 nV/√Hz
  • Slew Rate 12 V/µs
  • Output Voltage Swing Rail-to-Rail
  • Output Current Drive 70 mA
  • Operating Ambient Temperature Range −40°C to 125°C
  • Space Saving Micro-UQFN Package 1.5 x 1.0 x 0.5 mm

All trademarks are the property of their respective owners.

  • Unless Otherwise Noted, Typical Values at TA = 25°C, V+ = 3.3V
  • Supply Voltage 2.7V to 5.5V
  • Supply Current 1.65 mA
  • Shutdown Current 200 pA
  • Input Offset Voltage 1 mV Max
  • Input Bias Current 0.1 pA
  • GBW 23 MHz
  • EMIRR at 1.8 GHz 105 dB
  • Input Noise Voltage at 1 kHz 9 nV/√Hz
  • Slew Rate 12 V/µs
  • Output Voltage Swing Rail-to-Rail
  • Output Current Drive 70 mA
  • Operating Ambient Temperature Range −40°C to 125°C
  • Space Saving Micro-UQFN Package 1.5 x 1.0 x 0.5 mm

All trademarks are the property of their respective owners.

The LMV881 is a low power CMOS input operational amplifier that provides low input bias currents, a rail to rail output with high output drive capability and a wide temperature range of −40°C to +125°C. Additionally, the LMV881 is EMI hardened to minimize sensitivity to external interference.

The LMV881 has a maximum input offset voltage of 1 mV with an input common-mode voltage range that includes ground. Over an operating supply range from 2.7V to 5.5V, the LMV881 provides a typical PSRR of 110dB and a CMRR of 110dB. This makes the LMV881 ideal for EMI sensitive applications as well as exceptional performance as a robust general purpose part.

The unity gain stable LMV881 features 23 MHz of bandwidth while consuming only 1.65 mA of current. This device also maintains stability for capacitive loads as large as 200 pF.

LMV881 offers a shutdown pin that can be used to disable the device and reduce the supply current to sub-nanoamp levels. During shutdown, the output is hard-clamped to V- to provide a known output state. The shutdown input thresholds are set for 1.8V logic, regardless of the amplifiers supply voltage. This eliminates the need for additional logic level shifting circuitry or translators.

The LMV881 is offered in the space saving 6-Pin µUQFN package and provides excellent performance and economy in terms of power and space usage.

The LMV881 is a low power CMOS input operational amplifier that provides low input bias currents, a rail to rail output with high output drive capability and a wide temperature range of −40°C to +125°C. Additionally, the LMV881 is EMI hardened to minimize sensitivity to external interference.

The LMV881 has a maximum input offset voltage of 1 mV with an input common-mode voltage range that includes ground. Over an operating supply range from 2.7V to 5.5V, the LMV881 provides a typical PSRR of 110dB and a CMRR of 110dB. This makes the LMV881 ideal for EMI sensitive applications as well as exceptional performance as a robust general purpose part.

The unity gain stable LMV881 features 23 MHz of bandwidth while consuming only 1.65 mA of current. This device also maintains stability for capacitive loads as large as 200 pF.

LMV881 offers a shutdown pin that can be used to disable the device and reduce the supply current to sub-nanoamp levels. During shutdown, the output is hard-clamped to V- to provide a known output state. The shutdown input thresholds are set for 1.8V logic, regardless of the amplifiers supply voltage. This eliminates the need for additional logic level shifting circuitry or translators.

The LMV881 is offered in the space saving 6-Pin µUQFN package and provides excellent performance and economy in terms of power and space usage.
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類型 標題 日期
* Data sheet LMV881 23 MHz Low Power CMOS EMI Hard Op Amp with 1.8V Logic datasheet (Rev. B) 2013年 5月 3日
E-book Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. C) 2018年 11月 30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 An Adaptable, Low Loss, Selective Filter and Gain Topology with Low Sensitivity (Rev. A) 2016年 3月 22日

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模擬型號

LMV881 Macromodels

SNOM306.ZIP (2 KB) - Spice Model
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設計工具

CIRCUIT060013 — 具有 T 網路回饋電路的反相放大器

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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。
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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。
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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 (...)
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