Typical operating characteristics – Rainbow Electronics MAX1215 User Manual
Page 5
MAX1215
1.8V, 12-Bit, 250Msps ADC for
Broadband Applications
_______________________________________________________________________________________
5
-110
-90
-100
-60
-70
-80
-50
-40
-20
-10
-30
0
0
20
40
60
80
100
120
FFT PLOT
(8192-POINT DATA RECORD)
MAX1215toc01
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
HD3
f
SAMPLE
=
249.99936MHz
f
IN
= 12.78683MHz
A
IN
= -1.008dBFS
SNR = 66.5dB
SINAD = 66.2dB
THD = -80.4dBc
SFDR = 83.3dBc
HD2 = -83.3dBc
HD3 = -88.4dBc
HD2
-110
-90
-100
-60
-70
-80
-50
-40
-20
-10
-30
0
0
20
40
60
80
100
120
FFT PLOT
(8192-POINT DATA RECORD)
MAX1215toc02
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
f
SAMPLE
=
249.99936MHz
f
IN
= 65.03279MHz
A
IN
= -1.083dBFS
SNR = 66.7dB
SINAD = 65.6dB
THD = -72dBc
SFDR = 73.7dBc
HD2 = -82dBc
HD3 = -73.7dBc
HD3
HD2
-110
-90
-100
-60
-70
-80
-50
-40
-20
-10
-30
0
0
20
40
60
80
100
120
FFT PLOT
(8192-POINT DATA RECORD)
MAX1215toc03
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
f
SAMPLE
=
249.99936MHz
f
IN
= 199.24876MHz
A
IN
= -1.018dBFS
SNR = 65.5dB
SINAD = 63.2dB
THD = -67dBc
SFDR = 67.1dBc
HD2 = -89.1dBc
HD3 = -67.1dBc
HD3
HD2
-110
-90
-100
-60
-70
-80
-50
-40
-20
-10
-30
0
0
20
40
60
80
100
120
FFT PLOT
(8192-POINT DATA RECORD)
MAX1215toc04
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
HD3
f
SAMPLE
=
249.99936MHz
f
IN
= 248.62607MHz
A
IN
= -1.059dBFS
SNR = 65dB
SINAD = 64.2dB
THD = -71.5dBc
SFDR = 72.4dBc
HD2 = -82.1dBc
HD3 = -72.4dBc
HD2
-110
-90
-100
-60
-70
-80
-50
-40
-20
-10
-30
0
0
20
40
60
80
100
120
TWO-TONE IMD PLOT
(8192-POINT DATA RECORD)
MAX1215toc05
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
f
IN1
2f
IN2
- f
IN1
2f
IN1
- f
IN2
f
IN2
f
SAMPLE
= 249.99936MHz
f
IN1
= 99.21239MHz
f
IN2
= 101.1044775MHz
A
IN1
= A
IN2
= -7dBFS
IMD = -79dBc
SNR/SINAD vs. ANALOG INPUT FREQUENCY
(f
SAMPLE
= 249.99936MHz, A
IN
= -1dBFS)
MAX1215 toc06
f
IN
(MHz)
SNR/SINAD (dB)
250
200
150
100
50
58
61
64
67
70
55
0
300
SNR
SINAD
SFDR vs. ANALOG INPUT FREQUENCY
(f
SAMPLE
= 249.99936MHz, A
IN
= -1dBFS)
MAX1215 toc07
f
IN
(MHz)
SFDR (dBc)
250
200
150
100
50
50
60
70
80
90
40
55
65
75
85
45
0
300
HD2/HD3 vs. ANALOG INPUT FREQUENCY
(f
SAMPLE
= 249.99936MHz, A
IN
= -1dBFS)
MAX1215 toc08
f
IN
(MHz)
HD2/HD3 (dBc)
250
200
150
100
50
-95
-90
-80
-70
-85
-75
-65
-60
-100
0
300
HD3
HD2
SNR/SINAD vs. ANALOG INPUT AMPLITUDE
(f
SAMPLE
= 249.99936MHz, f
IN
= 65.03279MHz)
MAX1215 toc09
ANALOG INPUT AMPLITUDE (dBFS)
SNR/SINAD (dB)
-5
-15
-25
-35
-45
-10
-20
-30
-40
-50
20
30
50
40
60
70
10
-55
0
SNR
SINAD
Typical Operating Characteristics
(AV
CC
= OV
CC
= 1.8V, AGND = OGND = 0, f
SAMPLE
= 250MHz, A
IN
= -1dBFS; see each TOC for detailed information on test condi-
tions, differential input drive, differential sine-wave clock input drive, 0.1µF capacitor on REFIO, internal reference, digital output pins
differential R
L
= 100
Ω, T
A
= +25°C.)