ADS1274
ADS1278
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SBAS367F –JUNE 2007–REVISED FEBRUARY 2011
ELECTRICAL CHARACTERISTICS (continued)
All specifications at TA = –40°C to +105°C, AVDD = +5V, DVDD = +1.8V, IOVDD = +3.3V, fCLK = 27MHz, VREFP = 2.5V,
VREFN = 0V, and all channels active, unless otherwise noted.
ADS1274, ADS1278
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
POWER SUPPLY
AVDD
4.75
1.65
2.0
5
1.8
2.1
5.25
1.95
2.2
3.6
10
V
V
0.1 ≤ fCLK ≤ 32.768MHz
DVDD(9)
IOVDD
32.768MHz < fCLK ≤ 37MHz
V
1.65
V
AVDD
1
1
1
μA
μA
μA
Power-down current
DVDD
15
IOVDD
10
ADS1274
High-Speed mode
High-Resolution mode
Low-Power mode
Low-Speed mode
High-Speed mode
High-Resolution mode
Low-Power mode
Low-Speed mode
High-Speed mode
High-Resolution mode
Low-Power mode
Low-Speed mode
High-Speed mode
High-Resolution mode
Low-Power mode
Low-Speed mode
50
50
75
75
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mW
mW
mW
mW
ADS1274
AVDD current
23
35
5
9
18
24
12
17
ADS1274
DVDD current
10
15
2.5
4.5
0.5
0.3
0.3
0.15
420
410
210
55
0.15
0.075
0.075
0.02
285
275
135
30
ADS1274
IOVDD current
ADS1274
Power dissipation
ADS1278
High-Speed mode
High-Resolution mode
Low-Power mode
Low-Speed mode
High-Speed mode
High-Resolution mode
Low-Power mode
Low-Speed mode
High-Speed mode
High-Resolution mode
Low-Power mode
Low-Speed mode
High-Speed mode
High-Resolution mode
Low-Power mode
Low-Speed mode
97
97
145
145
64
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mW
mW
mW
mW
ADS1278
AVDD current
44
9
14
23
30
16
20
ADS1278
DVDD current
12
17
2.5
4.5
1
0.25
0.125
0.125
0.035
530
515
245
50
0.5
0.5
0.2
785
765
355
80
ADS1278
IOVDD current
ADS1278
Power dissipation
(9) fCLK = 37MHz max for High-Speed mode, and 27MHz max for all other modes. See Table 7 for DVDD restrictions in High-Speed mode.
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