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AD8331ARQZ-R7 数据表(PDF) 14 Page - Analog Devices

部件名 AD8331ARQZ-R7
功能描述  Ultralow Noise VGAs with Preamplifier and Programmable RIN
PDF  40 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD8331ARQZ-R7 数据表(HTML) 14 Page - Analog Devices

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AD8331/AD8332/AD8334
Rev. E | Page 14 of 40
35
SAMPLE SIZE = 100
0.2V < VGAIN < 0.7V
0
5
10
15
20
25
30
49.6
50.5
50.4
50.3
50.2
50.1
50.0
49.9
49.8
49.7
GAIN SCALING FACTOR
Figure 19. Gain Scaling Factor Histogram
100
10
1
0.1
100k
100M
10M
1M
FREQUENCY (Hz)
SINGLE ENDED, PIN VOH OR VOL
RL = ∞
Figure 20. Output Impedance vs. Frequency
10k
1k
100
10
100k
100M
10M
1M
FREQUENCY (Hz)
RFB = 6.65kΩ, CSH = 0pF
RFB = 3.01kΩ, CSH = 0pF
RFB = 1.1kΩ, CSH = 1.2pF
RFB = 549Ω, CSH = 8.2pF
RFB = 412Ω, CSH = 12pF
RFB = 270Ω, CSH = 22pF
RFB = ∞, CSH = 0pF
Figure 21. LNA Input Impedance vs.
Frequency for Various Values of RFB and CSH
RIN = 50Ω,
RFB = 270Ω
RIN = 75Ω,
RFB = 412Ω
RIN = 100Ω,
RFB = 549Ω R
IN = 200Ω,
RFB = 1.1kΩ
RIN = 6kΩ,
RFB = ∞
0Ω
17Ω
100j
50j
–50j
–100j
25j
–25j
f = 100kHz
Figure 22. Smith Chart, S11 vs. Frequency,
0.1 MHz to 200 MHz for Various Values of RFB
20
15
10
5
0
–15
–10
–5
100k
1M
10M
100M
500M
FREQUENCY (Hz)
VIN = 10mV p-p
RIN = 50Ω
RIN = 75Ω
RIN = 100Ω
RIN = 200Ω
RIN = 500Ω
RIN = 1kΩ
Figure 23. LNA Frequency Response, Single Ended, for Various Values of RIN
20
15
10
5
0
–15
–10
–5
100k
1M
10M
100M
500M
FREQUENCY (Hz)
RFB = ∞
Figure 24. Frequency Response for Unterminated LNA, Single Ended



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