Typical operating characteristics (continued) – Rainbow Electronics MAX1421 User Manual
Page 6
MAX1421
12-Bit, 40Msps, +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, f
CLK
= 40MHz (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
2
4
10 12 14
16
6
8
18 20
TWO-TONE IMD, 8192-POINT RECORD,
DIFFERENTIAL INPUT
MAX1421 toc04
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
f
IN1
= 11.5104229MHz
f
IN2
= 13.5126603MHz
TWO-TONE ENVELOPE:
-0.49dB FS
A
IN1
= A
IN2
= -6.5dB FS
IMD2
IMD3
f
IN1
f
IN2
70
50
1
10
100
SIGNAL-TO-NOISE PLUS DISTORTION
vs. ANALOG INPUT FREQUENCY
54
MAX1421 toc08
ANALOG INPUT FREQUENCY (MHz)
SINAD (dB)
58
62
66
20
40
30
60
50
70
80
-60
-40
-30
-50
-20
-10
0
SPURIOUS-FREE DYNAMIC RANGE
vs. INPUT POWER (f
IN
= 15MHz)
MAX1421 toc09
INPUT POWER (dB FS)
SFDR (dBc)
-80
-70
-50
-60
-40
-30
-60
-40
-50
-30
-20
-10
0
TOTAL HARMONIC DISTORTION
vs. INPUT POWER (f
IN
= 15MHz)
MAX1421 toc11
INPUT POWER (dB FS)
THD (dBc)
-20
0
40
20
60
80
-60
-40
-50
-30
-20
-10
0
SIGNAL-TO-NOISE PLUS DISTORTION
vs. INPUT POWER (f
IN
= 15MHz)
MAX1421 toc12
INPUT POWER (dB FS)
SINAD (dB)
-50
-80
1
10
100
TOTAL HARMONIC DISTORTION vs.
ANALOG INPUT FREQUENCY
-74
MAX1421 toc07
ANALOG INPUT FREQUENCY (MHz)
THD (dBc)
-68
-62
-56
0
10
20
30
40
50
60
70
80
-60
-40
-50
-30
-20
-10
0
SIGNAL-TO-NOISE RATIO
vs. INPUT POWER (f
IN
= 15MHZ)
MAX1421 toc10
INPUT POWER (dB FS)
SNR (dB)
85
45
1
10
100
SPURIOUS-FREE DYNAMIC RANGE vs.
ANALOG INPUT FREQUENCY
53
MAX1421 toc05
ANALOG INPUT FREQUENCY (MHz)
SFDR (dBc)
61
69
77
70
50
1
10
100
SIGNAL-TO-NOISE RATIO vs.
ANALOG INPUT FREQUENCY
54
MAX1421 toc06
ANALOG INPUT FREQUENCY (MHz)
SNR (dB)
58
62
66