TYPICAL CHARACTERISTICS
TA = +25°C, VDD = +2.7V, VREF = External +2.5V, fSAMPLE = 50kHz, unless otherwise noted.
FREQUENCY SPECTRUM
(4096 Point FFT: fIN = 1kHz, 0dB)
INTEGRAL LINEARITY ERROR vs CODE
(2.5V Internal Reference)
0.00
–40.00
–80.00
–120.0
2.00
1.50
1.00
0.50
0.00
–0.50
–1.00
–1.50
–2.00
0
10
20
25
0
1024
2048
3072
4095
4095
100
Frequency (kHz)
Output Code
INTEGRAL LINEARITY ERROR vs CODE
(2.5V External Reference)
DIFFERENTIAL LINEARITY ERROR vs CODE
(2.5V Internal Reference)
2.00
1.50
2.00
1.50
1.00
1.00
0.50
0.50
0.00
0.00
–0.50
–1.00
–1.50
–2.00
–0.50
–1.00
–1.50
–2.00
0
1024
2048
3072
0
1024
2048
3072
4095
Output Code
Output Code
DIFFERENTIAL LINEARITY ERROR vs CODE
(2.5V External Reference)
CHANGE IN OFFSET vs TEMPERATURE
1.5
1.0
2.00
1.50
1.00
0.5
0.50
0.0
0.00
–0.50
–1.00
–1.50
–2.00
–0.5
–1.0
–1.5
–50
–25
0
25
50
75
0
1024
2048
3072
4095
Output Code
Temperature (°C)
ADS7828
SBAS181C
7
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