AD9860 Datasheet, PDF (11/32 Pages) Analog Devices – Mixed-Signal Front-End (MxFE™) Processor for Broadband Communications

–50
–55
BUFFERED BYPASS
2V INPUT, 1؋ GAIN
–60 _{BUFFERED 2V}
–65 ^{INPUT, 1؋ GAIN}
–70
–75
–80
BUFFERED 1V
–85
INPUT, 2؋ GAIN
BUFFERED BYPASS
–90
1V INPUT, 2؋ GAIN
–95
–100
0
10
100
INPUT FREQUENCY – MHz
1000
TPC 19. Rx THD vs. f_IN,
F_ADC = 64 MSPS
–50
–55
–60
–65
BUFFERED BYPASS
–70
1V INPUT, 2؋ GAIN
–75
BUFFERED BYPASS
2V INPUT, 1؋ GAIN
–80
–85
–90
BUFFERED 1V
–95 BUFFERED 2V
INPUT, 2؋ GAIN
INPUT, 1؋ GAIN
–100
0
10
100
1000
INPUT FREQUENCY – MHz
TPC 22. Rx SFDR @ 64 MSPS
1
0
–1
–2
–3
–4
–5
–6
1
NO BUFF 2V ؋1
BUFF 1V ؋2
BUFF 2V ؋1
10
100
INPUT FREQUENCY – MHz
1000
TPC 25. Rx Input Attenuation
–50 _{AD9860 LOW POWER}
MODE 1, BUFFER
–55 _ENABLED,
1V p-p INPUT,
–60 2؋ RxPGA GAIN
AD9862 LOW POWER
MODE 1, BUFFER
ENABLED,
1V p-p INPUT,
2؋ RxPGA GAIN
–65
–70
–75
–80
–85
–90
0
AD9860 LOW POWER MODE 1,
BUFFER BYPASSED, 2V p-p INPUT,
1؋ RxPGA GAIN
AD9862 LOW POWER MODE 1,
BUFFER BYPASSED, 2V p-p INPUT,
1؋ RxPGA GAIN
50 100 150 200 250 300
f_IN – MHz
TPC 20. Rx THD vs. f_IN,
F_ADC = 32 MSPS
–50
AD9862 LOW POWER MODE 1,
–55 ^{BUFFER ENABLED, 1V p-p}
INPUT, 2؋ RxPGA GAIN
AD9860
LOW POWER
MODE 1,
–60 AD9860
BUFFER BYPASSED,
LOW POWER MODE 1,
2V p-p INPUT,
–65 BUFFER ENABLED,
1؋ RxPGA GAIN
1V p-p INPUT,
–70
2؋ RxPGA GAIN
–75
–80
–85
–90
–95
0
AD9862 LOW POWER MODE 1,
BUFFER BYPASSED, 2V p-p INPUT,
1؋ RxPGA GAIN
50 100 150 200 250 300
f_IN – MHz
TPC 23. Rx SFDR @ 32 MSPS
280
270
260
250
240
230
220
210
200
190
180
0
20
40
60
f_IN – MHz
80
100
TPC 26. Rx Input Buffer
Impedance vs. f_IN
AD9860/AD9862
–50 _{AD9860 LOW POWER}
MODE 2, BUFFER
–55 _ENABLED,
1V p-p INPUT,
–60 2؋ RxPGA GAIN
–65
AD9862
LOW POWER
MODE 2,
BUFFER
ENABLED,
1V p-p INPUT,
2؋ RxPGA GAIN
–70
–75
–80
–85
–90
0
AD9860 LOW POWER MODE 2,
BUFFER BYPASSED, 2Vp-p INPUT,
1؋ RxPGA GAIN
AD9862 LOW POWER MODE 2,
BUFFER BYPASSED, 2V p-p INPUT,
1؋ RxPGA GAIN
50 100 150 200 250 300
f_IN – MHz
TPC 21. Rx THD vs. f_IN,
F_ADC = 16 MSPS
–50
AD9860 LOW POWER MODE 2,
–55 ^{BUFFER BYPASSED, 1V p-p}
INPUT, 2؋ RxPGA GAIN
–60 AD9860
LOW POWER MODE 2,
–65
BUFFER ENABLED,
1V p-p INPUT,
–70
2؋ RxPGA GAIN
–75
–80
–85
–90
–95
0
AD9862 LOW POWER
MODE 2, BUFFER BYPASSED,
2V p-p INPUT, 1؋ RxPGA GAIN
AD9862 LOW POWER MODE 2,
BUFFER ENABLED, 1V p-p INPUT,
2؋ RxPGA GAIN
50 100 150 200 250 300
f_IN – MHz
TPC 24. Rx SFDR @ 16 MSPS
800
700
NOMINAL
600
500
32MSPS LP MODE
400
300
16MSPS LP MODE
200
100
0
0
10 20 30 40 50 60 70
f_ADC – MSPS
TPC 27. Rx Analog Power
Consumption
REV. 0
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