Rainbow Electronics MAX1181 - Manual (Page 6)

MAX1181
Dual 10-Bit, 80Msps, +3V, Low-Power ADC with
Internal Reference and Parallel Outputs
6 _______________________________________________________________________________________
-100
-80
-90
-60
-70
-40
-50
-30
-10
-20
0
0 10 15 5 20 25 30 35 40
FFT PLOT CHB (8192-POINT RECORD,
DIFFERENTIAL INPUT)
MAX1181 toc04
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
f
INA
= 19.9123MHz
f INB = 24.9123MHz
f CLK = 80.000568MHz
AINB = -0.53 dB FS
CHB
-100
-80
-90
-60
-70
-40
-50
-30
-10
-20
0
0 10 15 5 20 25 30 35 40
FFT PLOT CHA (8192-POINT RECORD,
DIFFERENTIAL INPUT)
MAX1181 toc05
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
f INA = 40.4202MHz
f INB = 47.0413MHz
f CLK = 80.000568MHz
AINA = -0.52dB FS
CHA
-100
-80
-90
-60
-70
-40
-50
-30
-10
-20
0
0 10 15 5 20 25 30 35 40
FFT PLOT CHB (8192-POINT RECORD,
DIFFERENTIAL INPUT)
MAX1181 toc06
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
f INA = 40.4202MHz
f INB = 47.0413MHz
f CLK = 80.000568MHz
AINB = -0.53dB FS
CHB
-100
-80
-90
-60
-70
-40
-50
-30
-10
-20
0
0 10 15 5 20 25 30 35 40
TWO-TONE IMD PLOT (8192-POINT RECORD,
COHERENT SAMPLING)
MAX1181 toc07
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
f IN1 = 38.1545676MHz
f IN2 = 41.9631884MHz
f CLK = 80.0005678MHz
AIN = 6.5dB FS
TWO-TONE ENVELOPE =
-0.52dB FS
2nd ORDER IMD
f IN1
f IN2
SIGNAL-TO-NOISE RATIO vs.
ANALOG INPUT FREQUENCY
MAX1181 toc08
ANALOG INPUT FREQUENCY (MHz)
SNR (dB)
61
55
56
57
58
59
60
10 100
CHA
CHB
SIGNAL-TO-NOISE + DISTORTION
vs. ANALOG INPUT FREQUENCY
MAX1181 toc09
ANALOG INPUT FREQUENCY (MHz)
SINAD (dB)
10 100
61
60
59
58
57
CHA
CHB
TOTAL HARMONIC DISTORTION vs.
ANALOG INPUT FREQUENCY
MAX1181 toc10
ANALOG INPUT FREQUENCY (MHz)
THD (dB)
10 100
CHA
CHB
-80
-65
-74
-77
-68
-71
SPURIOUS-FREE DYNAMIC RANGE vs.
ANALOG INPUT FREQUENCY
MAX1181 toc11
ANALOG INPUT FREQUENCY (MHz)
SFDR (dB)
87
63
67
71
75
79
83
10 100
CHA CHB
1 10 100 1000
FULL-POWER INPUT BANDWIDTH vs.
ANALOG INPUT FREQUENCY
(SINGLE-ENDED)
MAX1181 toc12
ANALOG INPUT FREQUENCY (MHz)
GAIN (dB)
6
-8
-6
-2
0
2
4
-4
Typical Operating Characteristics (continued)
(V DD = +3V, OV DD = +2.5V, internal reference, differential input at -0.5dB FS, f CLK = 80.0005678MHz, C L
≈ 10pF. T
A = +25°C,
unless otherwise noted.)