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參數(shù)資料
| 型號： | LT1469 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Dual 90MHz, 22V/us 16-Bit Accurate Operational Amplifier |
| 中文描述： | 雙90MHz的，22V/us 16位精度運算放大器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大小： | 179K |
| 代理商： | LT1469 |
LT1469
7
Input Considerations
Each input of the LT1469 is protected with a 100
series
resistor and back-to-back diodes across the bases of the
input devices. If large differential input voltages are antici-
pated, limit the input current to less than 10mA with an
external series resistor. Each input also has two ESD
clamp diodes—one to each supply. If an input is driven
beyond the supply, limit the current with an external
resistor to less than 10mA.
The LT1469 employs bias current cancellation at the
inputs. The inverting input current is trimmed at zero
common mode voltage to minimize errors in inverting
applications such as I-to-V converters. The noninverting
input current is not trimmed and has a wider variation and
therefore a larger maximum value. As the input offset
current can be greater than either input current, the use of
balanced source resistance is NOT recommended as it
actually degrades DC accuracy and also increases noise.
APPLICATIU
W
U
U
Q1
+IN
1469 F02
R1
100
Q2
–IN
R1
100
Figure 2. Input Stage Protection
The input bias currents vary with common mode voltage.
The cancellation circuitry was not designed to track this
common mode voltage because the settling time would
have been adversely affected.
The LT1469 inputs can be driven to the negative supply
and to within 0.5V of the positive supply without phase
reversal. As the input moves closer than 0.5V to the
positive supply, the output reverses phase.
Total Input Noise
The total input noise of the LT1469 is optimized for a
source resistance between 1k and 20k. Within this range,
the total input noise is dominated by the noise of the
source resistance itself. When the source resistance is
below 1k, voltage noise of the amplifier dominates. When
the source resistance is above 20k, the input noise current
is the dominant contributor.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| LT1469_1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual 90MHz, 22V/μs 16-Bit Accurate Operational Amplifi er |
| LT1469-2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual 200MHz, 30V/μs 16-Bit Accurate AV ≥ 2 Op Amp |
| LT1469ACDF#PBF | 功能描述:IC OPAMP 16BIT DUAL 90MHZ 12-DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°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:帶卷 (TR) |
| LT1469ACDF#TRPBF | 功能描述:IC OPAMP 16BIT DUAL 90MHZ 12-DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°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:帶卷 (TR) |
| LT1469ACDF-2#PBF | 功能描述:IC OPAMP 16BIT DUAL 200MHZ 12DFN RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:Excalibur™ 放大器類型:J-FET 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:45 V/µs 增益帶寬積:10MHz -3db帶寬:- 電流 - 輸入偏壓:20pA 電壓 - 輸入偏移:490µV 電流 - 電源:1.7mA 電流 - 輸出 / 通道:48mA 電壓 - 電源，單路/雙路(±):4.5 V ~ 38 V，±2.25 V ~ 19 V 工作溫度:-40°C ~ 85°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:帶卷 (TR) |
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