Datasheet

ADS1251
4
SBAS184D
www.ti.com
TYPICAL CHARACTERISTICS
At T
A
= +25°C, V
DD
= +5V, CLK = 8MHz, and V
REF
= 4.096, unless otherwise specified.
RMS NOISE vs DATA RATE
Data Rate (Hz)
10010 10k1k 100k
RMS Noise (ppm of FS)
2.0
1.6
1.2
0.8
0.4
0
EFFECTIVE RESOLUTION vs DATA OUTPUT RATE
Data Output Rate (Hz)
1k100 10k 100k
Effective Resolution (Bits)
20.0
19.5
19.0
18.5
18.0
2.0
1.8
1.6
1.4
1.2
1.0
RMS NOISE vs TEMPERATURE
Temperature (°C)
–40 –20 0 20 40 60 80 100
RMS Noise (ppm of FS)
19.5
19.0
18.5
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)
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
RMS Noise (µV)
RMS NOISE vs V
REF
VOLTAGE
14
12
10
8
6
4
2
0
V
REF
Voltage (V)
012345
RMS Noise (ppm of FS)
RMS NOISE vs V
REF
VOLTAGE