Datasheet
ADC081C021, ADC081C027
www.ti.com
SNAS447C –FEBRUARY 2008–REVISED MARCH 2013
Electrical Characteristics (continued)
The following specifications apply for V
A
= +2.7V to +5.5V, GND = 0V, f
SCL
up to 3.4MHz, f
IN
= 1kHz for f
SCL
up to 400kHz, f
IN
= 10kHz for f
SCL
= 3.4MHz unless otherwise noted. Boldface limits apply for T
A
= T
MIN
to T
MAX
: all other limits T
A
= 25°C
unless otherwise noted.
Symbol Parameter Conditions Typical
(1)
Limits
(1)
Units (Limits)
I
IN
Input Current
(3)
±1 µA (max)
LOGIC OUTPUT CHARACTERISTICS, OPEN-DRAIN (SDA, ALERT)
I
SINK
= 3 mA 0.4 V (max)
V
OL
Output Low Voltage
I
SINK
= 6 mA 0.6 V (max)
High-Impedence Output Leakage
I
OZ
±1 µA (max)
Current
(3)
Output Coding Straight (Natural) Binary
POWER REQUIREMENTS
Supply Voltage Minimum 2.7 V (min)
V
A
Supply Voltage Maximum 5.5 V (max)
Continuous Operation Mode -- 2-wire interface active.
V
A
= 2.7V to 3.6V 0.08 0.14 mA (max)
f
SCL
=400kHz
V
A
= 4.5V to 5.5V 0.16 0.30 mA (max)
I
N
Supply Current
V
A
= 2.7V to 3.6V 0.37 0.55 mA (max)
f
SCL
=3.4MHz
V
A
= 4.5V to 5.5V 0.74 0.99 mA (max)
V
A
= 3.0V 0.26 mW
f
SCL
=400kHz
V
A
= 5.0V 0.78 mW
P
N
Power Consumption
V
A
= 3.0V 1.22 mW
f
SCL
=3.4MHz
V
A
= 5.0V 3.67 mW
Automatic Conversion Mode -- 2-wire interface stopped and quiet (SCL = SDA = V
A
). f
SAMPLE
= T
CONVERT
* 32
V
A
= 2.7V to 3.6V 0.41 0.59 mA (max)
I
A
Supply Current
V
A
= 4.5V to 5.5V 0.78 1.2 mA (max)
V
A
= 3.0V 1.35 mW
P
A
Power Consumption
V
A
= 5.0V 3.91 mW
Power Down Mode (PD
1
) -- 2-wire interface stopped and quiet. (SCL = SDA = V
A
).
(4)
I
PD1
Supply Current 0.1 0.2 µA (max)
P
PD1
Power Consumption 0.5 0.9 µW (max)
Power Down Mode (PD
2
) -- 2-wire interface active. Master communicating with a different device on the bus.
V
A
= 2.7V to 3.6V 13 45 µA (max)
f
SCL
=400kHz
V
A
= 4.5V to 5.5V 27 80 µA (max)
I
PD2
Supply Current
V
A
= 2.7V to 3.6V 89 150 µA (max)
f
SCL
=3.4MHz
V
A
= 4.5V to 5.5V 168 250 µA (max)
V
A
= 3.0V 0.04 mW
f
SCL
=400kHz
V
A
= 5.0V 0.14 mW
P
PD2
Power Consumption
V
A
= 3.0V 0.29 mW
f
SCL
=3.4MHz
V
A
= 5.0V 0.84 mW
(4) This parameter is specified by design and/or characterization and is not tested in production.
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