Datasheet
MAX5864
Ultra-Low-Power, High Dynamic-
Performance, 22Msps Analog Front End
8 _______________________________________________________________________________________
ADC TOTAL HARMONIC DISTORTION
vs. ANALOG INPUT FREQUENCY
MAX5864 toc07
ANALOG INPUT FREQUENCY (MHz)
THD (dB)
100755025
-75
-70
-65
-60
-55
-50
-80
0 125
ADC SPURIOUS-FREE DYNAMIC RANGE
vs. ANALOG INPUT FREQUENCY
MAX5864 toc08
ANALOG INPUT FREQUENCY (MHz)
SFDR (dBc)
100755025
55
60
65
70
75
80
50
0 125
45
50
55
60
70
65
75
80
40
ADC SPURIOUS-FREE DYNAMIC RANGE
vs. ANALOG INPUT FREQUENCY
MAX5864 toc09
ANALOG INPUT FREQUENCY (MHz)
SFDR (dBc)
1007550250 125
SINGLE ENDED
ADC SIGNAL-TO-NOISE-RATIO
vs. ANALOG INPUT POWER
MAX5864 toc10
ANALOG INPUT POWER (dBFS)
SNR (dB)
-4-8-12-16-20
10
20
30
40
50
60
0
-24 0
f
IN
= 5.50885
QA
IA
ADC SIGNAL-TO-NOISE-RATIO AND
DISTORTION vs. ANALOG INPUT POWER
MAX5864 toc11
ANALOG INPUT POWER (dBFS)
SINAD (dB)
-4-8-12-16-20
10
20
30
40
50
60
0
-24 0
f
IN
= 5.50885
QA
IA
THD (dB)
-75
-70
-65
-60
-55
-50
-45
-40
-35
-30
-80
ADC TOTAL HARMONIC DISTORTION
vs. ANALOG INPUT POWER
MAX5864 toc12
ANALOG INPUT POWER (dBFS)
-4-8-12-16-20-24 0
f
IN
= 5.50885
Typical Operating Characteristics (continued)
(V
DD
= DV
DD
= 3V, OV
DD
= 1.8V, internal reference (1.024V), C
L
≈ 10pF on all digital outputs, f
CLK
= 22MHz 50% duty cycle, ADC
input amplitude = -0.5dBFS, DAC output amplitude = 0dBFS, differential ADC input, differential DAC output, C
REFP
= C
REFN
=
C
COM
= 0.33µF, Xcvr mode, T
A
= +25°C, unless otherwise noted.)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-110
ADC CHANNEL-QA TWO-TONE FFT PLOT
MAX5864 toc04
FREQUENCY (MHz)
AMPLITUDE (dBFS)
10978234561011
f
CLK
= 22MHz
f
1
= 1.8MHz
f
2
= 2.2MHz
A
IA =
-7dBFS PER TONE
8192-POINT
DATA RECORD
F
2
F
1
ADC SIGNAL-TO-NOISE RATIO
vs. ANALOG INPUT FREQUENCY
MAX5864 toc05
ANALOG INPUT FREQUENCY (MHz)
SNR (dB)
1007525 50
43
44
45
46
47
48
49
50
42
0 125
QA
IA
ADC SIGNAL-TO-NOISE AND DISTORTION
RATIO vs. ANALOG INPUT FREQUENCY
MAX5864 toc06
ANALOG INPUT FREQUENCY (MHz)
SINAD (dB)
1007525 50
43
44
45
46
48
47
49
50
42
0 125
IA
QA