Datasheet

7
6
5
4
3
2
1
0
V (V)
IN
Noise( Vrms)m
2.5-2.5 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 1.5
InternalReference
C =1 F
REFIN
m
REF5025
2.0
RatiometricConfiguration
DataRate=10SPS
7
6
5
4
3
2
1
0
V (V)
IN
Noise( Vrms)m
2.5-2.5 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 1.5
InternalReference
C =1 F
REFIN
m
REF5025
2.0
RatiometricConfiguration
DataRate=60SPS
10
8
6
4
2
0
V (V)
IN
Noise( Vrms)m
2.5-2.5 -2.0 -1.5 -1.0 -0.5 0 0.5 1.0 1.5
InternalReference
C =1 F
REFIN
m
REF5025
2.0
RatiometricConfiguration
DataRate=14.4kSPS
10
9
8
7
6
5
4
3
2
1
0
ReferenceVoltage(V)
Noise( Vrms)m
5.50 0.5 1.0 2.0 2.5 3.0 3.5 4.0 4.5
DataRate=14.4kSPS
5.0
ShortedInput
1.5
DataRate=400SPS
DataRate=14.4kSPS
DataRate=10SPS
DataRate=16.6SPS
3
2
1
0
1
2
3
-
-
-
InputSignal(V)
LinearityDeviation(ppm)
2.5-2.5 -2.0 -1.5 -0.5 0 0.5 1.0 1.5
2.0
T=+125 C°
-1.0
T=+85 C°
T=+25 C°
T= 40 C- °
3.0
2.5
2.0
1.5
1.0
0.5
0
Temperature( C)°
INL(ppm)
125
5Units
-55 -35 -15 5 25 45 65 85 105
ADS1259
SBAS424D –JUNE 2009– REVISED AUGUST 2011 www.ti.com
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, AVDD = +2.5V, AVSS = –2.5V, DVDD = 3.3V, V
REF
= 2.5V, VREFN = AVSS, f
CLK
= 7.3728MHz, and
f
DATA
= 60SPS, unless otherwise noted.
NOISE vs INPUT VOLTAGE NOISE vs INPUT VOLTAGE
Figure 8. Figure 9.
NOISE vs INPUT VOLTAGE NOISE vs REFERENCE VOLTAGE
Figure 10. Figure 11.
LINEARITY DEVIATION vs INPUT LEVEL INTEGRAL NONLINEARITY vs TEMPERATURE
Figure 12. Figure 13.
8 Copyright © 2009–2011, Texas Instruments Incorporated