Typical operating characteristics (continued) – Rainbow Electronics MAX1420 User Manual
Page 6
MAX1420
12-Bit, 60Msps, +3.3V, Low-Power ADC
with Internal Reference
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(V
AVDD
= V
DVDD
= +3.3V, AGND = DGND = 0, V
IN
= ±1.024V, differential input voltage at -0.5dB FS, f
CLK
= 60.006MHz (50% duty
cycle), digital output load C
L
= 10pF, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25
°C.)
-120
-80
-100
-40
-60
-20
0
0
30
TWO-TONE IMD PLOT
(8192-POINT DATA RECORD)
DIFFERENTIAL INPUT
MAX1420 toc04
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
10
15
5
20
25
f
IN1
f
IN1
= 11.566036MHz
f
IN2
= 13.4119138MHz
A
IN1
= A
IN2
= -6.5dB FS
TWO TONE
ENVELOPE: -0.5dB FS
f
IN2
IMD3 IMD2
IMD2
IMD3
85
45
1
10
100
SPURIOUS-FREE DYNAMIC RANGE
vs. ANALOG INPUT FREQUENCY
53
MAX1420 toc08
ANALOG INPUT FREQUENCY (MHz)
SFDR (dB)
61
69
77
MAX1420 toc09
-10
0
20
10
50
60
40
30
70
SNR (dB)
-70
-50
-40
-60
-30
-20
-10
0
INPUT POWER (dB FS)
SIGNAL-TO-NOISE RATIO
vs. INPUT POWER (f
IN
= 15MHz)
-80
-60
-70
-40
-50
-30
-20
MAX1420 toc11
THD (dB)
TOTAL HARMONIC DISTORTION
vs. INPUT POWER (f
IN
= 15MHz)
-70
-50
-40
-60
-30
-20
-10
0
INPUT POWER (dB FS)
20
40
30
60
50
70
80
MAX1420 toc12
SFDR (dB)
SPURIOUS-FREE DYNAMIC RANGE
vs. INPUT POWER (f
IN
= 15MHz)
-70
-50
-40
-60
-30
-20
-10
0
INPUT POWER (dB FS)
-50
-80
1
10
100
TOTAL HARMONIC DISTORTION
vs. ANALOG INPUT FREQUENCY
-74
MAX1420 toc07
ANALOG INPUT FREQUENCY (MHz)
THD (dB)
-68
-62
-56
MAX1420 toc10
-10
0
80
SINAD (dB)
-70
-50
-40
-60
-30
-20
-10
0
INPUT POWER (dB FS)
SIGNAL-TO-NOISE + DISTORTION
vs. INPUT POWER (f
IN
= 15MHz)
10
40
30
20
70
60
50
70
50
1
10
100
SIGNAL-TO-NOISE RATIO
vs. ANALOG INPUT FREQUENCY
54
MAX1420 toc05
ANALOG INPUT FREQUENCY (MHz)
SNR (dB)
58
62
66
70
50
1
10
100
SIGNAL-TO-NOISE + DISTORTION
vs. ANALOG INPUT FREQUENCY
54
MAX1420 toc06
ANALOG INPUT FREQUENCY (MHz)
SINAD (dB)
58
62
66