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ꢋ ꢑꢉ ꢀꢁ ꢗꢁ
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SBAS274E − MARCH 2003 − REVISED JUNE 2004
TYPICAL CHARACTERISTICS (continued)
All specifications at T = 25°C, AVDD = 5V, DVDD = IOVDD = 3V, f
CLK
BIAS
= 40MHz, External V
REF
= +3V, 2XMODE = low, V = 2.0V, and
CM
A
R
= 37kΩ, unless otherwise noted.
INTERMODULATION RESPONSE
NOISE HISTOGRAM
0
18k
16k
14k
12k
10k
8k
fIN1 = 1.99MHz
fIN2 = 2.00MHz
VIN = 0V
−
−
−
−
20
40
60
80
−
IMD = 94dB
−
−
−
−
100
120
140
160
6k
4k
2k
0
−
−
−
−
−
1.95 1.96 1.97 1.98 1.99 2.00 2.01 2.02 2.03 2.04 2.05
5
4
3
2
1
0
1
2
3
4
5
Output Code (LSB)
Frequency (MHz)
SIGNAL−TO−NOISE RATIO,
TOTAL HARMONIC DISTORTION,
AND SPURIOUS−FREE DYNAMIC RANGE
vs INPUT SIGNALAMPLITUDE
SIGNAL−TO−NOISE RATIO
vs INPUT FREQUENCY
110
100
90
80
70
60
50
40
30
20
10
90
−
= 2dBFS
VIN
85
80
75
70
65
60
−
= 6dBFS
VIN
SFDR
−
= 20dBFS
VIN
THD
SNR
fIN = 100kHz
−
−
−
−
−
−
−
10
70
60
50
40
30
20
0
0.001
0.01
0.1
1
10
Input Signal Amplitude, VIN (dB)
Input Frequency, fIN (MHz)
TOTAL HARMONIC DISTORTION
vs INPUT FREQUENCY
SPURIOUS−FREE DYNAMIC RANGE
vs INPUT FREQUENCY
−
−
−
85
90
95
110
108
106
104
102
100
98
−
VIN
=
6dBFS
−
= 20dBFS
VIN
−
= 2dBFS
VIN
−
2dBFS
VIN
=
−
100
−
105
−
110
−
= 20dBFS
VIN
96
−
VIN
=
6dBFS
0.1
94
92
90
0.001
0.01
1
10
0.001
0.01
0.1
Input Frequency, fIN (MHz)
1
10
Input Frequency, fIN (MHz)
13
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