Datasheet

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SBAS274H − MARCH 2003 − REVISED MAY 2007
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13
TYPICAL CHARACTERISTICS (continued)
All specifications at T
A
= 25°C, AVDD = 5V, DVDD = IOVDD = 3V, f
CLK
= 40MHz, External V
REF
= +3V, 2XMODE = low, V
CM
= 2.0V, and
R
BIAS
= 37kΩ, unless otherwise noted.
18k
16k
14k
12k
10k
8k
6k
4k
2k
0
Occurrences
−
5
−
4
−
3
−
2
−
1012345
Output Code (LSB)
NOISE HISTOGRAM
V
IN
=0V
0
−
20
−
40
−
60
−
80
−
100
−
120
−
140
−
160
Power Spectral Density (dB)
Frequency (MHz)
INTERMODULATION RESPONSE
1.95 1.96 1.97 1.98 1.99 2.00 2.01 2.02 2.03 2.04 2.05
f
IN1
=1.99MHz
f
IN2
=2.00MHz
IMD =
−
94dB
SIGNAL−TO−NOISE RATIO,
TOTAL HARMONIC DISTORTION,
AND SPURIOUS−FREE DYNAMIC RANGE
vs INPUT SIGNAL AMPLITUDE
−
70
−
60
−
50
−
40
−
30
−
20
−
10 0
Input Signal Amplitude, V
IN
(dB)
SNR, THD, and SFDR (dB)
110
100
90
80
70
60
50
40
30
20
10
SFDR
THD
SNR
f
IN
= 100kHz
SIGNAL−TO−NOISE RATIO
vs INPUT FREQUENCY
0.001 0.01 0.1 1 10
Input Frequency, f
IN
(MHz)
SNR (dB)
90
85
80
75
70
65
60
V
IN
=
−
2dBFS
V
IN
=
−
6dBFS
V
IN
=
−
20dBFS
TOTAL HARMONIC DISTORTION
vs INPUT FREQUENCY
0.001 0.01 0.1 1 10
Input Frequency, f
IN
(MHz)
THD (dB)
−
85
−
90
−
95
−
100
−
105
−
110
V
IN
=
−
6dBFS
V
IN
=
−
2dBFS
V
IN
=
−
20dBFS
SPURIOUS−FREE DYNAMIC RANGE
vs INPUT FREQUENCY
0.001 0.01 0.1 1 10
Input Frequency, f
IN
(MHz)
SFDR (dB)
110
108
106
104
102
100
98
96
94
92
90
V
IN
=
−
6dBFS
V
IN
=
−
2dBFS
V
IN
=
−
20dBFS