Datasheet


SBAS124C − DECEMBER 1999 − REVISED DECEMBER 2005
www.ti.com
8
Figure 5
0
−0.5
−1
−2
0 0.5 1 1.5 2 2.5 3
− Output Offset Error − LSB
1
1.5
Common-Mode Voltage − V
OUTPUT OFFSET ERROR
vs
COMMON-MODE VOLTAGE
2
3.5 4 4.5 5
0.5
−1.5
Gain = 1
Gain = 20
Gain = 10
1 LSB =
−72 dB for Gain = 1,
−98 dB for Gain = 20
E
O
Figure 6
4
3
1
−1
2 2.5 3 3.5 4 4.5 5
− Output Offset Error − LSB
6
7
OUTPUT OFFSET ERROR
vs
POWER SUPPLY VOLTAGE
8
5.5 6
5
2
0
V
DD
− Supply Voltage − V
Gain = 20
Gain = 10
Gain = 1
4 LSB =
86 dB for Gain = 20,
60 dB for Gain = 1
50 Ksps, CCLK = 2.5 MHz,
V
REF
= 2.048 V
E
O
Figure 7
0.8
0.6
0.2
0
110
Quiescent Current − mA
1
1.2
Sampling Rate − ksps
QUIESCENT CURRENT
vs
SAMPLING RATE
1.4
100
0.4
V
DD
= 3 V
V
DD
= 5 V
V
REF
and Buffer ON, Oscillator OFF
Serial Data Clocked During the 48 Clock
Count Conversion Cycle, CCLK = SCLK
Figure 8
3
2
1
0
124581016
Peak-to-Peak Output Noise − LSB
4
5
Gain
PEAK-TO-PEAK OUTPUT NOISE
vs
GAIN
6
20