
MAX5865
Ultra-Low-Power, High-Dynamic-
Performance, 40Msps Analog Front End
10 ______________________________________________________________________________________
DAC SPURIOUS-FREE DYNAMIC RANGE
vs. SAMPLING RATE
MAX5865 toc25
SAMPLING RATE (MHz)
SFDR (dBc)
383632 3426 28 3024
62
64
66
68
70
72
74
76
78
80
60
22 40
f
OUT
= f
CLK
/10
DAC SPURIOUS-FREE DYNAMIC RANGE
vs. OUTPUT FREQUENCY
MAX5865 toc26
FREQUENCY (MHz)
SFDR (dBc)
15105
55
60
65
70
75
80
50
020
DAC SPURIOUS-FREE DYNAMIC RANGE
vs. OUTPUT POWER
MAX5865 toc27
OUTPUT POWER (dBFS)
SFDR (dBc)
-5-10-15-20-25
40
50
60
70
80
90
30
-30 0
f
OUT
= 2MHz
DAC CHANNEL-ID SPECTRAL PLOT
MAX5865 toc28
FREQUENCY (MHz)
AMPLITUDE (dB)
15105
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
0
f
ID
= 5.498MHz
f
ID
DAC CHANNEL-QD SPECTRAL PLOT
MAX5865 toc29
FREQUENCY (MHz)
AMPLITUDE (dB)
15105
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
0
f
QD
= 5.498MHz
f
QD
DAC CHANNEL-ID TWO-TONE
SPECTRAL PLOT
MAX5865 toc30
FREQUENCY (MHz)
AMPLITUDE (dB)
18.014.511.07.54.0
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
-100
0.5
f
1
f
2
f
1
= 4MHz, f
2
= 4.5MHz, -7dBFS
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
= 40MHz 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.)
-1.0
-0.8
0
0.8
-0.4
0.4
-0.2
0.6
-0.6
0.2
1.0
-40 -15 3510 60 85
ADC OFFSET ERROR
vs. TEMPERATURE
MAX5865 toc22
TEMPERATURE (°C)
OFFSET ERROR (%FS)
0
0.2
1.0
1.8
0.6
1.4
0.8
1.6
0.4
1.2
2.0
-40 -15 3510 60 85
ADC GAIN ERROR
vs. TEMPERATURE
MAX5865 toc23
TEMPERATURE (°C)
GAIN ERROR (%FS)
0
10
20
I
DD
I
OVDD
5
15
25
22 26 3430 38
SUPPLY CURRENT
vs. SAMPLING RATE
MAX5865 toc24
SAMPLING RATE (MHz)
SUPPLY CURRENT (mA)
Rx MODE ONLY
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