Datasheet

ADS1254
4
SBAS213B
www.ti.com
TYPICAL CHARACTERISTICS
At T
A
= +25°C, AV
DD
= +5V, DV
DD
= +1.8V, CLK = 8MHz, and V
REF
= 4.096, unless otherwise specified.
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
RMS NOISE vs TEMPERATURE
Temperature (°C)
–40 –20 0 20 40 60 80 100
RMS Noise (ppm of FS)
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
RMS Noise (ppm of FS)
RMS NOISE vs DATA OUTPUT RATE
100 1k 10k 100k
Data Ouput Rate (Hz)
20.0
19.8
19.6
19.4
19.2
19.0
18.8
18.6
18.4
18.2
18.0
Effective Resolution (Bits)
EFFECTIVE RESOLUTION vs DATA OUTPUT RATE
100 1k 10k 100k
Data Ouput Rate (Hz)
20.0
19.8
19.6
19.4
19.2
19.0
18.8
18.6
18.4
18.2
18.0
EFFECTIVE RESOLUTION vs TEMPERATURE
Temperature (°C)
–40 –20 0 20 40 60 80 100
Effective Resolution (Bits)
18
16
14
12
10
8
6
4
2
0
V
REF
Voltage (V)
0.50 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
RMS Noise (µV)
RMS NOISE vs V
REF
VOLTAGE
14
12
10
8
6
4
2
0
V
REF
Voltage (V)
0 1.0 1.50.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
RMS Noise (ppm of FS)
RMS NOISE vs V
REF
VOLTAGE