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AD8260ACPZ-R7 数据表(PDF) 15 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) 15 Page - Analog Devices

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AD8260
Rev. 0 | Page 15 of 32
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–3
–2
–1
0123456
78
TIME (ns)
VS = +3V, +5V, AND ±5V
Figure 45. Large-Signal Pulse Response for Various Values of Supply Voltage
for the VGA/Preamplifier
CH1 1.00VΩ CH2 20.0mVΩ
MATH
100mV
200nV
CH2 20.0mVΩ
M200ns
A CH1
760mV
1
M
4
T
595.200ns
CH1 AMPL
3.28V
CH2 AMPL
1.20mV
MATH AMPL
117mV
T
Figure 46. Gain Response for the VGA/Preamplifier, Yellow: Gain Code Select,
Red: VGA Differential Output, Blue/Green: VGAP and VGAN
0
1
TIME (ns)
800
700
600
–1
–200
100
0
300
–100
200
500
400
–2
2
Figure 47. Overdrive Recovery of the VGA/Preamplifier—Gain Code = 1011
FREQUENCY (Hz)
1M
100k
5M
–10
–20
–30
–40
–50
–60
–70
–SUPPLY HIGH CURRENT DRIVER
+SUPPLY HIGH CURRENT DRIVER
+SUPPLY VGA/PREAMPLIFIER
–SUPPLY VGA PREAMPLIFIER
VS = ±3.3V
GAIN CODE = 1011
Figure 48. PSRR vs. Frequency for Dual Supplies for the High Current Driver
and the VGA/Preamplifier
0
40
30
–55
10
TEMPERATURE (
°C)
525
45
20
65
85
105
125
–15
–35
5
15
35
25
FULLY ENABLED
VGA/PREAMPLIFIER ENABLED
HIGH CURRENT DRIVER ENABLED
Figure 49. Quiescent Supply Current vs. Temperature for Three Operating States
–55
–35
–15
TEMPERATURE (°C)
5
25
45
65
85
105
125
80
70
60
50
40
30
20
10
0
Figure 50. Standby Quiescent Supply Current vs. Temperature



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