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| 型號： | LMP8270MA/NOPB |
| 廠商： | National Semiconductor |
| 文件頁數(shù)： | 7/17頁 |
| 文件大小： | 0K |
| 描述： | IC AMP PREC DIFF 8-SOIC |
| 標(biāo)準(zhǔn)包裝： | 95 |
| 系列： | LMP® |
| 放大器類型： | 差分 |
| 電路數(shù)： | 1 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 0.7 V/µs |
| 增益帶寬積： | 80kHz |
| 電流 - 輸入偏壓： | 20pA |
| 電壓 - 輸入偏移： | 250µV |
| 電流 - 電源： | 1mA |
| 電壓 - 電源，單路/雙路(±)： | 4.75 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 管件 |
| 其它名稱： | *LMP8270MA *LMP8270MA/NOPB LMP8270MA |
RG = (100 k:)
GAIN (NEW)
GAIN (NEW) - 20
20 RG
GAIN (NEW) =
RG - 100 k:
OBSOLETE
SNOSAK1K – DECEMBER 2004 – REVISED APRIL 2013
The total gain is given by:
(7)
which can be rearranged to calculate RG:
(8)
The inverting gain of the second amplifier is set at 2, giving a total system gain of 20. The non-inverting gain
which is achieved through positive feedback can be less than or equal to this gain without any issues. This
implies a total system gain of 40 or less is easily achievable. Once the positive gain surpasses the negative gain,
the system might oscillate.
As the value of gain resistor, RG, approaches that of the internal 100 k resistor, maintaining gain accuracy will
become more challenging. This is because Gain(new) is inversely proportional to (RG-100 k), see Equation 7 .
As RG → 100 k, the denominator of Equation 7 gets smaller. This smaller value will be comparable to the
tolerance of the 100 k
resistor and RG and hence the gain will be dominated by accuracy level of these
resistors and the gain tolerance will be determined by the tolerance of the external resistor used for RG and the
3% tolerance of the internal 100 k
resistor.
Copyright 2004–2013, Texas Instruments Incorporated
15
Product Folder Links: LMP8270
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| LMP8270MAX/E7001108 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LMP8270MAX/NOPB | 功能描述:IC AMP PREC VOLT DIFF 8-SOIC RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:LMP® 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 轉(zhuǎn)換速率:3 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:1pA 電壓 - 輸入偏移:70µV 電流 - 電源:2.5mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 供應(yīng)商設(shè)備封裝:SOT-6 包裝:Digi-Reel® 其它名稱:MAX4475AUT#TG16DKR |
| LMP8271 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:High Common Mode, Gain of 20, Bidirectional Precision Voltage Difference Amplifiers |
| LMP8271A E0A WAF | 制造商:Texas Instruments 功能描述: |
| LMP8271A E0B WAF | 制造商:Texas Instruments 功能描述: |
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