AD8332 AD [Analog Devices], AD8332 Datasheet - Page 9

• Manufacturer Part Number: AD8332
• Description: Ultralow Noise VGAs with Preamplifier and Programmable RIN
• Manufacturer: AD [Analog Devices]

100
10k
100
0.1
10
1k
10
35
30
25
20
15
10
100k
100k
1
5
0
R
R
49.6
SINGLE ENDED, PIN VOH OR VOL
R
R
R
SAMPLE SIZE = 100
0.2V < V
FB
FB
R
R
Figure 17. LNA Input Impedance vs. Frequency for
L
FB
FB
FB
FB
= ∞
= 6.65kΩ, C
= 3.01kΩ, C
= 1.1kΩ, C
Figure 16. Output Impedance vs. Frequency
R
= 549Ω, C
= 412Ω, C
= 270Ω, C
Figure 15. Gain Scaling Factor Histogram
49.7 49.8
FB
GAIN
= ∞, C
Various Values of R
< 0.7V
SH
SH
SH
SH
SH
SH
SH
= 1.2pF
= 8.2pF
GAIN SCALING FACTOR
1M
1M
= 0pF
= 0pF
= 0pF
= 12pF
= 22pF
49.9 50.0
FREQUENCY (Hz)
FREQUENCY (Hz)
50.1 50.2 50.3
FB
and C
10M
10M
SH
50.4
50.5
100M
100M
Rev. C | Page 9 of 32
Figure 20. LNA Frequency Response, Unterminated, Single-Ended
–10
–15
–20
Figure 18. Smith Chart, S11 vs. Frequency, 0.1 MHz to 200 MHz
–10
–15
–20
20
15
10
–5
20
15
10
–5
100k
100k
5
0
5
0
0 Ω
R
R
R
IN
FB
FB
= 100 Ω ,
= 549 Ω
R
R
–25j
= ∞
IN
FB
25j
= 75 Ω ,
= 412 Ω
Single-Ended, for Various Values of R
Figure 19. LNA Frequency Response,
R
R
IN
FB
17 Ω
= 200 Ω ,
1M
1M
= 1.1k Ω
for Various Values of R
R
R
IN
FB
= 6k Ω ,
= ∞
FREQUENCY (Hz)
FREQUENCY (Hz)
R
50j
IN
–50j
= 1k
10M
10M
R
Ω
IN
R
R
IN
FB
= 500
= 50 Ω
= 270 Ω
Ω
AD8331/AD8332
,
FB
100M
100j
100M
–100j
R
AND 100
IN
f = 100kHz
IN
= 50
R
R
IN
IN
Ω
= 200
Ω
= 200
, 75
Ω
Ω
Ω
1G
1G
,