MAX19708 Просмотр технического описания (PDF) - Maxim Integrated
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MAX19708 Datasheet PDF : 37 Pages
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10-Bit, 11Msps, Ultra-Low-Power
Analog Front-End
Typical Operating Characteristics (continued)
(VDD = 3V, OVDD = 1.8V, internal reference (1.024V), CL ≈ 10pF on all digital outputs, fCLK = 11MHz (50% duty cycle), Rx ADC input
amplitude = -0.5dBFS, Tx DAC output amplitude = 0dBFS, differential Rx ADC input, differential Tx DAC output, CREFP = CREFN =
CCOM = 0.33µF, TA = +25°C, unless otherwise noted.)
Rx ADC SIGNAL-TO-NOISE AND DISTORTION
RATIO vs. ANALOG INPUT AMPLITUDE
60
fIN = 1.875MHz
55
50
45
IA
40
35
30
QA
25
20
-25 -20 -15 -10
-5
0
ANALOG INPUT AMPLITUDE (dBFS)
Rx ADC SIGNAL-TO-NOISE AND DISTORTION
RATIO vs. SAMPLING RATE
57.0
fIN = 1.875MHz
56.5
56.0
QA
55.5
55.0
54.5
54.0
IA
53.5
53.0
52.5
52.0
2 3 4 5 6 7 8 9 10 11
SAMPLING RATE (MHz)
Rx ADC SIGNAL-TO-NOISE AND DISTORTION
RATIO vs. CLOCK DUTY CYCLE
57.0
56.5 fIN = 1.875MHz
56.0
QA
55.5
55.0
54.5
54.0
IA
53.5
53.0
52.5
52.0
35 40 45 50 55 60 65
CLOCK DUTY CYCLE (%)
Rx ADC SPURIOUS-FREE DYNAMIC RANGE
vs. ANALOG INPUT AMPLITUDE
80
fIN = 1.875MHz
75
70
65
QA
60
55
50
IA
45
40
-25
-20
-15
-10
-5
0
ANALOG INPUT AMPLITUDE (dBFS)
Rx ADC SPURIOUS-FREE DYNAMIC
RANGE vs. SAMPLING RATE
80
fIN = 1.875MHz
IA
78
76
74
72
QA
70
68
66
2 3 4 5 6 7 8 9 10 11
SAMPLING RATE (MHz)
Rx ADC SPURIOUS-FREE DYNAMIC RANGE
vs. CLOCK DUTY CYCLE
80
78 fIN = 1.875MHz
76
74
IA
72
QA
70
68
66
64
62
60
35 40 45 50 55 60 65
CLOCK DUTY CYCLE (%)
Rx ADC SIGNAL-TO-NOISE RATIO
vs. SAMPLING RATE
56.0
fIN = 1.875MHz
55.5
QA
55.0
54.5
IA
54.0
53.5
53.0
2 3 4 5 6 7 8 9 10 11
SAMPLING RATE (MHz)
Rx ADC SIGNAL-TO-NOISE RATIO
vs. CLOCK DUTY CYCLE
57.0
56.5 fIN = 1.875MHz
56.0
QA
55.5
55.0
54.5
54.0
IA
53.5
53.0
52.5
52.0
35 40 45 50 55 60 65
CLOCK DUTY CYCLE (%)
Rx ADC OFFSET ERROR
vs. TEMPERATURE
1.00
0.75
IA
0.50
0.25
0
-0.25
-0.50
QA
-0.75
-1.00
-40 -15
10
35
60
85
TEMPERATURE (°C)
______________________________________________________________________________________ 11
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