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AD8260ACPZ-R7 数据表(PDF) 13 Page - Analog Devices

部件名 AD8260ACPZ-R7
功能描述  High Current Driver Amplifier and Digital VGA/Preamplifier with 3 dB Steps
PDF  32 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

AD8260ACPZ-R7 数据表(HTML) 13 Page - Analog Devices

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AD8260
Rev. 0 | Page 13 of 32
10
100
FREQUENCY (Hz)
10M
100k
1M
50M
GAIN CODE = 1011
Figure 33. Output-Referred Noise vs. Frequency for the VGA/Preamplifier at
Maximum Gain—See Figure 61
1
100
10
GAIN SELECT CODE
1010
1001
1000
0111
0110
0101
0001
0100
0011
0010
1011
Figure 34. Input-Referred Noise vs. Gain Select Code for the VGA/Preamplifier
See Figure 61
1
10
FREQUENCY (Hz)
10M
100k
1M
50M
GAIN CODE = 1011
Figure 35. Short-Circuit Input Noise vs. Frequency for the VGA/Preamplifier
See Figure 61
50
LOAD RESISTANCE (Ω)
1800
1600
1400
1200
200
1000
800
400
0
2000
30
40
60
80
70
600
HD2
HD3
VOUT = 1V p-p
GAIN CODE = 0110
Figure 36. Harmonic Distortion (HD2, HD3) vs. Load Resistance for the
VGA/Preamplifier—See Figure 62
LOAD CAPACITANCE (pF)
–70
–60
–50
–40
–30
–80
10
40
030
20
50
VOUT = 1V p-p
GAIN CODE = 0110
HD2
HD3
Figure 37. Harmonic Distortion (HD2, HD3) vs. Load Capacitance for the
VGA/Preamplifier—See Figure 62
–120
GAIN SELECT CODE
1010
1001
1000
0111
0110
0101
1011
–20
–40
–60
–80
–100
0
MEASUREMENT OF
DISTORTION IS
LIMITED BY THE
MAXIMUM DYNAMIC
INPUT RANGE OF
THE PREAMPLIFIER
HD2,
fC = 1MHz
VOUT = 1V p-p
HD3,
fC = 1MHz
HD2,
fC = 10MHz
HD3,
fC = 10MHz
Figure 38. Harmonic Distortion (HD2, HD3) vs. Gain Select Code at 1 MHz
and 10 MHz for the VGA/Preamplifier—See Figure 62



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