参数资料
型号: AD8331
厂商: Analog Devices, Inc.
英文描述: Ultralow Noise VGAs with Preamplifier and Programmable RIN
中文描述: 超低噪声的VGA前置放大器和可编程与房地产经纪人
文件页数: 7/32页
文件大小: 482K
代理商: AD8331
AD8331/AD8332
AD8331, AD8332—TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, V
S
= 5 V, R
L
= 500 , R
S
= R
IN
= 50 , R
FB
= 280 , C
SH
= 22 pF, f = 10 MHz, R
CLMP
= ∞, C
L
= 1 pF, V
CM
= 2.5 V,
–4.5 dB to +43.5 dB gain (HILO = LO), and differential signal voltage, unless otherwise specified.
Rev. C | Page 7 of 32
0
0.2
V
GAIN
(V)
0.6
0.4
1.0
0.8
1.1
G
40
50
30
10
0
20
–10
60
MODE = HI
(AC PACKAGE
ONLY)
MODE = LO
HILO = LO
0
HILO = HI
Figure 3. Gain vs. V
GAIN
and MODE (MODE Available on AC Package)
0
G
0.5
1.0
2.0
1.5
0
0.2
VGAIN(V)
0.6
0.4
0
–1.0
–1.5
–0.5
–2.0
1.0
0.8
1.1
–40
°
C
+85
°
C
+25
°
C
Figure 4. Absolute Gain Error vs. V
GAIN
at Three Temperatures
G
0.5
1.0
2.0
1.5
0
0.2
V
GAIN
(V)
0.6
0.4
0
–1.0
–1.5
–0.5
–2.0
1.0
0.8
1.1
1MHz
30MHz
70MHz
0
10MHz
Figure 5. Absolute Gain Error vs. V
GAIN
at Various Frequencies
0
–0.5
%
10
20
30
40
50
–0.1
GAIN ERROR (dB)
0.4
0
–0.3
–0.2
0.1
–0.4
0.3
0.2
0.5
SAMPLE SIZE = 80 UNITS
V
GAIN
= 0.5V
0
Figure 6. Gain Error Histogram
%
0
CHANNEL-TO-CHANNEL GAIN MATCH(dB)
0
0
0
0
0
0
0
0
0
0
0
5
25
20
15
10
0
5
25
20
15
10
V
GAIN
= 0.7V
SAMPLE SIZE = 50 UNITS
V
GAIN
= 0.2V
0
Figure 7. Gain Match Histogram for V
GAIN
= 0.2 V and 0.7 V
G
–10
0
10
20
40
30
50
100k
–20
FREQUENCY (Hz)
1M
1G
100M
10M
V
GAIN
= 1V
0.8V
0.6V
0.4V
0.2V
0V
0
Figure 8. Frequency Response for Various Values of V
GAIN
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AD8331-EVAL Ultralow Noise VGAs with Preamplifier and Programmable RIN
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