ADS1259
SBAS424C –JUNE 2009–REVISED MARCH 2010
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ELECTRICAL CHARACTERISTICS (continued)
Minimum/maximum specifications are at TA = –40°C to +105°C. Typical specifications are at TA = +25°C, AVDD = +2.5V,
AVSS = –2.5V, DVDD = +3.3V, fCLK = 7.3728MHz, VREF = 2.5V, and fDATA = 60SPS, unless otherwise noted.
ADS1259
ADS1259B
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNIT
CLOCK SOURCE (fCLK
)
Nominal frequency
Accuracy
7.3728
±0.2
7.3728
±0.2
MHz
%
Internal oscillator
±2
8
±2
8
Frequency range
Start-up time(11)
Frequency range
Duty cycle
2
7.3728
20
2
7.3728
20
MHz
ms
Crystal oscillator
External clock
0.1
40
7.3728
8
0.1
40
7.3728
8
MHz
%
60
60
DIGITAL INPUT/OUTPUT (DVDD = 2.7V to 5.25V)
VIH
VIL
0.8 DVDD
DGND
DVDD
0.8 DVDD
DGND
DVDD
V
V
0.2 DVDD
0.2 DVDD
IOH = 1mA
0.8 DVDD
0.8 DVDD
V
VOH
IOH = 8mA
IOL = 1mA
IOL = 8mA
0.75 DVDD
0.75 DVDD
V
0.2 DVDD
±10
0.2 DVDD
±10
V
VOL
0.2 DVDD
0.1
0.2 DVDD
0.1
V
Input hysteresis
Input leakage
POWER SUPPLY
AVSS
V
0 < VDIGITAL INPUT < DVDD
mA
–2.6
AVSS + 4.75
2.7
0
–2.6
AVSS + 4.75
2.7
0
V
V
V
AVDD
AVSS + 5.25
5.25
AVSS + 5.25
5.25
DVDD
Operating
(reference enabled)
2.3
200
1
3.8
2.3
200
1
3.8
|mA|
|mA|
|mA|
Sleep mode
(reference enabled)
AVDD, AVSS current
Sleep mode
(reference disabled)
40
40
Power-Down mode
Operating
1
40
700
300
10
1
40
700
300
10
|mA|
mA
500
160
1
500
160
1
DVDD current(12)
Power dissipation
Sleep mode
mA
Power-Down mode(13)
mA
Operating
13
22
13
22
mW
Sleep mode
(reference enabled)
1.5
1.5
mW
Sleep mode
(reference disabled)
0.5
10
1.2
0.5
10
1.2
mW
Power-Down mode
240
240
mW
TEMPERATURE RANGE
Specified temperature range
Operating temperature range
Storage temperature range
–40
–40
–60
+105
+125
+150
–40
–40
–60
+105
+125
+150
°C
°C
°C
(11) Crystal operation using 18pF load capacitors.
(12) Specified with internal oscillator operating (internal oscillator current: 40µA, typ).
(13) External CLKIN, SCLK stopped. Digital inputs maintained at VIH or VIL voltage levels.
4
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