2πRF
參數(shù)資料
型號: AD8033AKS-R2
廠商: Analog Devices Inc
文件頁數(shù): 16/25頁
文件大?。?/td> 0K
描述: IC OPAMP VF R-R LN LP SC70-5
標準包裝: 1
系列: FastFET™
放大器類型: 電壓反饋
電路數(shù): 1
輸出類型: 滿擺幅
轉(zhuǎn)換速率: 80 V/µs
-3db帶寬: 80MHz
電流 - 輸入偏壓: 1.5pA
電壓 - 輸入偏移: 1000µV
電流 - 電源: 3.3mA
電流 - 輸出 / 通道: 60mA
電壓 - 電源,單路/雙路(±): 5 V ~ 24 V,±2.5 V ~ 12 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 6-TSSOP(5 引線),SC-88A,SOT-353
供應(yīng)商設(shè)備封裝: SC-70-5
包裝: 剪切帶 (CT)
其它名稱: AD8033AKS-R2CT
AD8033/AD8034
Rev. D | Page 22 of 24
0
29
24-
06
3
FREQUENCY (Hz)
VO
L
T
A
G
E
N
O
ISE
(n
V/
√Hz
)
2πRF CF
2πRF (CF + CS + CM + 2CD)
(CS + CM + 2CD + CF)/CF
RF NOISE
VEN (CF + CS + CM + 2CD)/CF
f3
f2
f3 =
VEN
f1
f2 =
f1 =
1
fCR
NOISE DUE TO AMPLIFIER
The output noise over frequency of the preamp is shown in
The pole in the loop transmission translates to a zero in the
noise gain of the amplifier, leading to an amplification of the
input voltage noise over frequency. The loop transmission zero
introduced by CF limits the amplification. The bandwidth of the
noise gain extends past the preamp signal bandwidth and is
eventually rolled off by the decreasing loop gain of the amplifier.
Keeping the input terminal impedances matched is recommended
to eliminate common-mode noise peaking effects that add to
the output noise.
Integrating the square of the output voltage noise spectral density
over frequency and then taking the square root results in the
total rms output noise of the preamp.
Figure 63. Photodiode Voltage Noise Contributions
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