Datasheet

ADS1251
6
SBAS184D
www.ti.com
TYPICAL CHARACTERISTICS (Cont.)
At T
A
= +25°C, V
DD
= +5V, CLK = 8MHz, and V
REF
= 4.096, unless otherwise specified.
–60
–65
–70
–75
–80
–85
–90
–95
–100
–105
COMMON-MODE REJECTION RATIO
vs CLK FREQUENCY
Clock Frequency (MHz)
12345678
CMRR at 60Hz (dB)
–60
–65
–70
–75
–80
–85
–90
–95
–100
–105
COMMON-MODE REJECTION RATIO
vs COMMON-MODE FREQUENCY
Common-Mode Signal Frequency (Hz)
10 100 1k 10k 100k
CMRR (dB)
1.65
1.60
1.55
1.50
1.45
1.40
CURRENT vs TEMPERATURE
Temperature (°C)
–40 –20 0 20 40 60 80 100
Current (mA)
9
8
7
6
5
4
3
2
1
0
POWER DISSIPATION vs CLK FREQUENCY
Clock Frequency (MHz)
012345 768
Power Dissipation (mW)
35
30
25
20
15
10
5
0
V
REF
CURRENT vs CLK FREQUENCY
Clock Frequency (MHz)
0.1 1 10
V
REF
Current (µA)
0
–20
–40
–60
–80
–100
–120
–140
–160
TYPICAL FFT
(1kHz input at 0.1dB less than full-scale)
Frequency (kHz)
01234567891011
Relative Magnitude (dB)