Datasheet
DAC121C081, DAC121C085
SNAS395D –DECEMBER 2007–REVISED MARCH 2013
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Electrical Characteristics (continued)
Values shown in this table are design targets and are subject to change before product release.
The following specifications apply for V
A
= +2.7V to +5.5V, V
REF
= V
A
, C
L
= 200 pF to GND, input code range 48 to 4047.
Boldface limits apply for T
MIN
≤ T
A
≤ T
MAX
and all other limits are at T
A
= 25°C, unless otherwise specified.
Units
Symbol Parameter Conditions Typical
(1)
Limits
(1)
(Limits)
LOGIC INPUT CHARACTERISTICS (SCL, SDA)
V
IH
Input High Voltage 0.7 x V
A
V (min)
V
IL
Input Low Voltage 0.3 x V
A
V (max)
I
IN
Input Current ±1 µA (max)
C
IN
Input Pin Capacitance
(3)
3 pF (max)
V
HYST
Input Hysteresis 0.1 x V
A
V (min)
LOGIC INPUT CHARACTERISTICS (ADR0, ADR1)
V
IH
Input High Voltage V
A
- 0.5V V (min)
V
IL
Input Low Voltage 0.5 V (max)
I
IN
Input Current ±1 µA (max)
LOGIC OUTPUT CHARACTERISTICS (SDA)
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
POWER REQUIREMENTS
Supply Voltage Minimum 2.7 V (min)
V
A
Supply Voltage Maximum 5.5 V (max)
Normal -- V
OUT
set to midscale. 2-wire interface quiet (SCL = SDA = V
A
). (output unloaded)
V
A
= 2.7V to 3.6V 105 156 µA (max)
I
ST_VA-1
V
A
DAC121C081 Supply Current
V
A
= 4.5V to 5.5V 132 214 µA (max)
V
A
= 2.7V to 3.6V 86 118 µA (max)
I
ST_VA-5
V
A
DAC121C085 Supply Current
V
A
= 4.5V to 5.5V 98 152 µA (max)
V
A
= 2.7V to 3.6V 37 43 µA (max)
V
REF
Supply Current
I
ST_VREF
(DAC121C085 only)
V
A
= 4.5V to 5.5V 53 61 µA (max)
V
A
= 3.0V 380 µW
Power Consumption
P
ST
(V
A
& V
REF
for DAC121C085)
(4)
V
A
= 5.0V 730 µW
Continuous Operation -- 2-wire interface actively addressing the DAC and writing to the DAC register. (output unloaded)
V
A
= 2.7V to 3.6V 134 220 µA (max)
f
SCL
=400kHz
V
A
= 4.5V to 5.5V 192 300 µA (max)
I
CO_VA-1
V
A
DAC121C081 Supply Current
V
A
= 2.7V to 3.6V 225 320 µA (max)
f
SCL
=3.4MHz
V
A
= 4.5V to 5.5V 374 500 µA (max)
V
A
= 2.7V to 3.6V 101 155 µA (max)
f
SCL
=400kHz
V
A
= 4.5V to 5.5V 142 220 µA (max)
I
CO_VA-5
V
A
DAC121C085 Supply Current
V
A
= 2.7V to 3.6V 193 235 µA (max)
f
SCL
=3.4MHz
V
A
= 4.5V to 5.5V 325 410 µA (max)
V
A
= 2.7V to 3.6V 33.5 55 µA (max)
V
REF
Supply Current
I
CO_VREF
(DAC121C085 only)
V
A
= 4.5V to 5.5V 49.5 71.4 µA (max)
V
A
= 3.0V 480 µW
f
SCL
=400kHz
V
A
= 5.0V 1.06 mW
Power Consumption
P
CO
(V
A
& V
REF
for DAC121C085)
V
A
= 3.0V 810 µW
f
SCL
=3.4MHz
V
A
= 5.0V 2.06 mW
(3) This parameter is specified by design and/or characterization and is not tested in production.
(4) To ensure accuracy, it is required that V
A
and V
REF
be well bypassed.
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