Datasheet

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SBAS274H − MARCH 2003 − REVISED MAY 2007
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15
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.
SIGNAL−TO−NOISE RATIO
vs TEMPERATURE
Temperature (
_
C)
−
40 10
−
15 35 60 85
SNR (dB)
100
90
80
70
60
50
V
IN
=
−
6dBFS
V
IN
=
−
2dBFS
V
IN
=
−
20dBFS
f
IN
= 100kHz
TOTAL HARMONIC DISTORTION
vs TEMPERATURE
Temperature (
_
C)
−
40 10
−
15 35 60 85
THD (dB)
−
85
−
90
−
95
−
100
−
105
−
110
V
IN
=
−
6dBFS
V
IN
=
−
2dBFS
V
IN
=
−
20dBFS
f
IN
=100kHz
SPURIOUS−FREE DYNAMIC RANGE
vs TEMPERATURE
Temperature (
_
C)
−
40 10
−
15 35 60 85
SFDR (dB)
110
105
100
95
90
85
V
IN
=
−
6dBFS
V
IN
=
−
2dBFS
V
IN
=
−
20dBFS
f
IN
=100kHz
POWER−SUPPLY CURRENT
vs TEMPERATURE
Temperature (
_
C)
−
40 10
−
15 35 60 85
Current (mA)
130
120
110
100
90
80
70
60
50
40
30
I
AVDD
(REFEN = high)
I
AVDD
(REFEN = low)
I
DVDD
+I
IOVDD
DVDD = IOVDD = 3V
R
BIAS
= 37k
Ω
,f
CLK
= 40MHz
SUPPLY CURRENT vs CLK FREQUENCY
2010 30 40 50
CLK Frequency, f
CLK
(MHz)
Supply Current (mA)
100
80
60
40
20
0
AVDD = 5V, DVDD = IOVDD = 3V, REFEN = High
I
DVDD
+I
IOVDD
I
AVDD
(R
BIAS
=37k
Ω
)
I
AVDD
(R
BIAS
= 60k
Ω
)
ANALOG SUPPLY CURRENT vs R
BIAS
R
BIAS
(k
Ω
)
3530 40 45 50 55 60
Analog Current, I
AVDD
(mA)
140
130
120
110
100
90
80
70
60
50
REFEN = low
REFEN = high