Datasheet

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SBAS255C − JUNE 2004 − REVISED APRIL 2009
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4
ELECTRICAL CHARACTERISTICS (continued)
At T
A
= +25°C, AVDD = +5V, DVDD = 3V, VREF = +4.096V, Range 5 (250pC), and continuous mode operation, unless otherwise noted.
Low-Power Mode: T
INT
= 400µs and CLK = 4MHz; High-Speed Mode: T
INT
= 320µs and CLK = 4.8MHz.
High-Speed ModeLow-Power Mode
PARAMETER UNITSMAXTYPMINMAXTYPMINTEST CONDITIONS
DIGITAL INPUT/OUTPUT
Logic Levels
V
IH
0.8DVDD DVDD + 0.1 ∗ ∗ V
V
IL
− 0.1 0.2DVDD ∗ ∗ V
V
OH
I
OH
= −500µA DVDD − 0.4 V
V
OL
I
OL
= 500µA 0.4 ∗ V
Input Current (I
IN
) 0 < V
IN
< DVDD ±10 ∗ µA
Data Format
(12)
Straight Binary ∗
POWER-SUPPLY REQUIREMENTS
Analog Power-Supply Voltage (AVDD) 4.75 5.25 ∗ ∗ V
Digital Power-Supply Voltage (DVDD) 2.7 5.25 ∗ ∗ V
Supply Current
Total Analog Current 10.5 14.0 mA
Total Digital Current DVDD = +3V 0.5 0.67 mA
Total Power Dissipation DVDD = +3V 54 75 72 100 mW
Total Power Dissipation per Channel DVDD = +3V 13.5 18.75 18 25 mW
(12)
Data format is Straight Binary with a small offset. The number of bits in the output word is controlled by the FORMAT pin (see text).