MAX19700 Просмотр технического описания (PDF) - Maxim Integrated
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MAX19700 Datasheet PDF : 32 Pages
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7.5Msps, 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 = 7.5MHz 50% duty cycle, ADC input
amplitude = -0.5dBFS, DAC output amplitude = 0dBFS, differential ADC input, differential DAC output, CREFP = CREFN = CCOM =
0.33µF, TA = +25°C, unless otherwise noted.)
Rx ADC SIGNAL-TO-NOISE AND DISTORTION
RATIO vs. SAMPLING RATE
55.0
54.8
QA
54.6
Rx ADC SPURIOUS-FREE DYNAMIC RANGE
vs. SAMPLING RATE
85
fIN = 1.9980913MHz
80
IA
Rx ADC SIGNAL-TO-NOISE RATIO
vs. CLOCK DUTY CYCLE
57.0
56.5 fIN = 1.9980913MHz
56.0
54.4
IA
54.2
75
55.5
IA
55.0
54.0
QA
54.5
53.8
70
54.0
QA
53.6
53.5
53.4
65
53.0
53.2
fIN = 1.9980913MHz
53.0
2
3
4
5
6
7
SAMPLING RATE (MHz)
60
2
3
4
5
6
7
SAMPLING RATE (MHz)
52.5
52.0
35 40 45 50 55 60 65
CLOCK DUTY CYCLE (%)
Rx ADC SIGNAL-TO-NOISE AND DISTORTION
RATIO vs. CLOCK DUTY CYCLE
57.0
fIN = 1.9980913MHz
56.5
56.0
55.5
55.0
IA
54.5
54.0
53.5
QA
53.0
52.5
52.0
35 40 45 50 55 60 65
CLOCK DUTY CYCLE (%)
Rx ADC SPURIOUS-FREE DYNAMIC RANGE
vs. CLOCK DUTY CYCLE
80
fIN = 1.9980913MHz
79
78
QA
77
76
75
IA
74
73
72
71
70
35 40 45 50 55 60 65
CLOCK DUTY CYCLE (%)
Rx ADC OFFSET ERROR
vs. TEMPERATURE
1.2
1.0
0.8
0.6
0.4
0.2
0
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
Rx ADC GAIN ERROR
vs. TEMPERATURE
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
Tx PATH SPURIOUS-FREE DYNAMIC
RANGE vs. SAMPLING RATE
77
fOUT = fCLK / 10
76
75
74
73
72
71
70
69
68
67
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5
SAMPLING RATE (MHz)
Tx PATH SPURIOUS-FREE DYNAMIC
RANGE vs. OUTPUT FREQUENCY
78
77
76
75
74
73
72
71
70
200 300 400 500 600 700 800
OUTPUT FREQUENCY (kHz)
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