Datasheet

ADS8028
www.ti.com SBAS549B –MAY 2011–REVISED MARCH 2012
ELECTRICAL CHARACTERISTICS (continued)
Minimum and maximum specifications apply from T
A
= –40°C to +125°C. Typical specifications are at T
A
= +25°C.
All specifications at AVDD = 2.7 V to 5.25 V, DVDD = 1.65 V to 5.25 V, f
SAMPLE
= 1 MHz, f
SCLK
= 20 MHz, and V
REF
= 2.5 V
internal, unless otherwise noted.
ADS8028
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
POWER CONSUMPTION
Power consumption
AVDD = DVDD = 3.0 V 17 18.9 mW
Operational AVDD = DVDD = 3.6 V 20.9 22.7 mW
Normal mode AVDD = DVDD = 5.25 V 36.8 39.4 mW
AVDD = DVDD = 3.6 V 14.8 16.6 mW
Static
AVDD = DVDD = 5.25 V 23.6 26.2 mW
STANDBY mode AVDD = DVDD = 3.6 V 5.4 9 mW
Power-down mode AVDD = DVDD = 3.6 V 3.6 36 µW
TEMPERATURE
Operating temperature range –40 +125 °C
THERMAL INFORMATION
ADS8028
THERMAL METRIC
(1)
RTJ (QFN) UNITS
20 PINS
θ
JA
Junction-to-ambient thermal resistance 32.8
θ
JCtop
Junction-to-case (top) thermal resistance 27.8
θ
JB
Junction-to-board thermal resistance 9.3
°C/W
ψ
JT
Junction-to-top characterization parameter 0.3
ψ
JB
Junction-to-board characterization parameter 9.3
θ
JCbot
Junction-to-case (bottom) thermal resistance 1.9
(1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953.
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