AD8332 AD [Analog Devices], AD8332 Datasheet - Page 10

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

AD8331/AD8332
500
400
300
200
100
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
100
0.1
Figure 22. Short-Circuit Input-Referred Noise vs. Frequency
10
100k
0
0
1
0
0
Figure 23. Short-Circuit Input-Referred Noise vs. V
R
HILO = LO OR HI
S
= 0, R
HILO = LO
Figure 21. Output-Referred Noise vs. V
f = 10MHz
FB
0.2
0.2
= ∞, V
HILO = HI
R
HILO = LO OR HI, f = 10MHz
S
GAIN
1M
= 0, R
FREQUENCY (Hz)
0.4
0.4
= 1V
FB
V
V
GAIN
= ∞,
GAIN
(V)
(V)
0.6
0.6
10M
0.8
GAIN
0.8
GAIN
100M
1.0
1.0
Rev. C | Page 10 of 32
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
Figure 24. Short-Circuit Input-Referred Noise vs. Temperature
1.0
0.1
7
6
5
4
3
2
1
0
10
50
–50
1
Figure 26. Noise Figure vs. R
f = 5MHz, R
R
V
SIMULATION
S
GAIN
= 0, R
INCLUDES NOISE OF VGA
–30
Figure 25. Input-Referred Noise vs. R
= 1V, f = 10MHz
FB
100
FB
R
R
= ∞,
S
= ∞ , V
IN
–10
= THERMAL NOISE ALONE
SOURCE RESISTANCE (Ω)
SOURCE RESISTANCE ( Ω )
R
= 50Ω
10
100Ω
200Ω
FB
75Ω
TEMPERATURE (°C)
GAIN
= ∞
10
= 1V
S
for Various Values of R
30
100
50
S
70
IN
1k
1k
90