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ADS1285 Datasheet(PDF) 21 Page - Texas Instruments

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Part # ADS1285
Description  ADS1285 32-Bit, Delta-Sigma ADC for Seismic Applications
PDF  67 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

ADS1285 Datasheet(HTML) 21 Page - Texas Instruments

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6.9 Typical Characteristics (continued)
at TA = 25°C, AVDD1 = 5 V, AVSS = 0 V, AVDD2 = 2.5 V, IOVDD = 1.8 V, fCLK = 8.192 MHz (4.096 MHz low-power mode),
VREFP = 4.096 V, VREFN = 0 V, PGA gain = 1, VCM = 2.5 V, fDATA = 500 SPS (unless otherwise noted)
Temperature (
C)
-40
-20
0
20
40
60
80
0
100
200
300
400
500
High- and mid-power modes
Low-power mode
Figure 6-57. Reference Input Current vs Temperature
Reference Input Current (
A)
0
10
20
30
40
50
60
70
80
90
100
High-power mode
Mid-power mode
Low-power mode
30 units
Figure 6-58. Reference Input Current Distribution
Common-Mode Input Frequency (Hz)
10
100
1000
10000
100000
1000000
40
60
80
100
120
140
160
PGA gain = 1
Buffer operation
Figure 6-59. CMRR vs Common-Mode Input Frequency
AVDD1 Current (mA)
0
10
20
30
40
50
60
70
80
90
100
High-power mode, PGA operation
Mid-power mode, PGA operation
Low-power mode, PGA operation
30 units
Figure 6-60. AVDD1 Current Distribution
AVDD1 Current (mA)
0
10
20
30
40
50
60
70
80
90
100
High-power mode, buffer
Mid-power mode, buffer
Low-power mode, buffer
30 units
Figure 6-61. AVDD1 Current Distribution
Temperature (
C)
-40
-20
0
20
40
60
80
0.4
0.8
1.2
1.6
2
High-power mode, PGA operation
Mid-power mode, PGA operation
Low-power mode, PGA operation
Figure 6-62. AVDD1 Current vs Temperature
www.ti.com
ADS1285
SBAS559A – MAY 2022 – REVISED DECEMBER 2022
Copyright © 2022 Texas Instruments Incorporated
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