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SBAS341B − DECEMBER 2004 − REVISED APRIL 2005
TYPICAL CHARACTERISTICS (continued)
All specifications at T = 25°C, AVDD = 5V, DVDD = IOVDD = 3V, f
unless otherwise noted.
= 40MHz, External V = +3V, V
REF CM
= +1.45V, and R = 37kΩ,
BIAS
A
CLK
SIGNAL−TO−NOISE RATIO
vs CLOCK FREQUENCY
100
TOTAL HARMONIC DISTORTION
vs CLOCK FREQUENCY
110
100
90
Ω
RBIAS = 37k
−
VIN
= 6dBFS, fIN = 10kHz
Ω
RBIAS = 30k
Ω
RBIAS = 37k
90
80
70
60
50
40
30
RBIAS
= 60k
RBIAS
= 30k
80
Ω
Ω
Ω
RBIAS = 267k
RBIAS
70
60
50
40
30
20
RBIAS
= 140k
RBIAS
= 100k
Ω
= 60k
Ω
RBIAS = 210k
Ω
RBIAS = 210k
RBIAS
Ω
Ω
Ω
= 100k
Ω
RBIAS = 140k
Ω
RBIAS = 267k
−
VIN
=
6dBFS, fIN = 10kHz
15 20 25
5
10
15
20
25
30
35
40
45
50
5
10
30
35
40
45
50
Clock Frequency, fCLK (MHz)
Clock Frequency, fCLK (MHz)
Figure 27
Figure 28
SPURIOUS−FREE DYNAMIC RANGE
vs CLOCK FREQUENCY
NOISE vs DC INPUT VOLTAGE
1000
100
10
110
100
90
80
70
60
50
40
30
20
Ω
RBIAS = 37k
RBIAS
= 60k
Ω
RBIAS
= 30k
Ω
RBIAS = 267k
Ω
Ω
RBIAS = 210k
RBIAS
= 100k
Ω
Ω
RBIAS = 140k
1
−
VIN
=
6dBFS, fIN = 10kHz
0.1
−
−
−
1
3
2
0
1
2
3
5
10 15 20 25
30
35
40
45
50
Input DC Voltage (V)
Clock Frequency, fCLK (MHz)
Figure 29
Figure 30
POWER−SUPPLY CURRENT
vs TEMPERATURE
NOISE HISTOGRAM
120
100
80
60
40
20
0
1540
1400
1300
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
VIN = 0
IAVDD (REFEN = low)
IAVDD (REFEN = high)
IDVDD + IIOVDD
Ω
RBIAS = 37k ,fCLK = 40MHz
−
−
−
−
1
4
3
2
0
1
2
3
4
−
−
15
40
10
35
60
85
_
Output Code (LSB)
Temperature ( C)
Figure 31
Figure 32
13
BB [ BURR-BROWN CORPORATION ]
