参数资料
型号: AD8331ARQ-REEL
厂商: Analog Devices Inc
文件页数: 6/56页
文件大小: 0K
描述: IC VGA SINGLE W/PREAMP 20-SSOP
产品变化通告: Product Discontinuance 27/Oct/2011
设计资源: Interfacing the High Frequency AD8331 to AD9215 (CN0096)
标准包装: 2,500
系列: X-AMP®
类型: 可变增益放大器
应用: 信号处理
安装类型: 表面贴装
封装/外壳: 20-SSOP(0.154",3.90mm 宽)
供应商设备封装: 20-QSOP
包装: 带卷 (TR)
配用: AD8331-EVALZ-ND - BOARD EVAL FOR AD8331
AD8331/AD8332/AD8334
Rev. G | Page 14 of 56
03
19
9-
0
1
9
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
%
T
O
T
A
L
GAIN SCALING FACTOR
Figure 19. Gain Scaling Factor Histogram
03
19
9-
0
20
100
10
1
0.1
100k
100M
10M
1M
O
UT
P
UT
I
M
P
E
D
ANCE
(
)
FREQUENCY (Hz)
SINGLE ENDED, PIN VOH OR PIN VOL
RL =
Figure 20. Output Impedance vs. Frequency
03
19
9-
0
2
1
10k
1k
100
10
100k
100M
10M
1M
INP
UT
I
M
P
E
DAN
CE
(
)
FREQUENCY (Hz)
RIZ = 6.65k, CSH = 0pF
RIZ = 3.01k, CSH = 0pF
RIZ = 1.1k, CSH = 1.2pF
RIZ = 549, CSH = 8.2pF
RIZ = 412, CSH = 12pF
RIZ = 270, CSH = 22pF
RIZ = ∞, CSH = 0pF
Figure 21. LNA Input Impedance vs.
Frequency for Various Values of RIZ and CSH
RIN = 50,
RIZ = 270
RIN = 75,
RIZ = 412
RIN = 100,
RIZ = 549
RIN = 200,
RIZ = 1.1k
RIN = 6k,
RIZ =
0
17
100j
50j
–50j
–100j
25j
–25j
f = 100kHz
03
19
9-
0
22
Figure 22. Smith Chart, S11 vs. Frequency,
0.1 MHz to 200 MHz for Various Values of RIZ
20
15
10
5
0
–15
–10
–5
100k
1M
10M
100M
500M
GA
IN
(
d
B
)
FREQUENCY (Hz)
03
19
9-
02
3
VIN = 10mV p-p
RIN = 50
RIN = 75
RIN = 100
RIN = 200
RIN = 500
RIN = 1k
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
GA
IN
(
d
B
)
FREQUENCY (Hz)
03
19
9-
02
4
RIZ =
Figure 24. Frequency Response for Unterminated LNA, Single-Ended
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