2
Two/Four-Channel, I C Adjustable Current DAC
2/DS04
OUTPUT CURRENT CHARACTERISTICS (continued)
(V
CC
= +2.7V to +5.5V, T = -40°C to +85°C.)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Output-Current Power-Supply
Rejection Ratio
DC
0.33
%/V
Output Leakage Current at Zero
Current Setting
I
-1
+1
μA
ZERO
Output-Current Differential
Linearity
DNL
INL
(Note 5)
(Note 6)
0.5
1
LSB
LSB
Output-Current Integral Linearity
2
I C AC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, T = -40°C to +85°C.)
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SCL Clock Frequency
f
(Note 7)
0
400
kHz
SCL
Bus Free Time Between STOP
and START Conditions
t
1.3
0.6
µs
µs
BUF
Hold Time (Repeated) START
Condition
t
HD:STA
Low Period of SCL
High Period of SCL
Data Hold Time
t
1.3
0.6
0
µs
µs
µs
ns
µs
LOW
t
HIGH
t
0.9
DH:DAT
Data Setup Time
START Setup Time
t
100
0.6
SU:DAT
t
SU:STA
20 +
SDA and SCL Rise Time
SDA and SCL Fall Time
t
(Note 8)
(Note 8)
300
300
ns
ns
R
0.1C
B
20 +
t
F
0.1C
B
STOP Setup Time
t
0.6
µs
SU:STO
SDA and SCL Capacitive Loading
C
(Note 8)
400
pF
B
Note 1: All voltages with respect to ground. Currents entering the IC are specified positive, and currents exiting the IC are negative.
Note 2: Supply current specified with all outputs set to zero current setting with all inputs (except A1 and A0, which can be open) driven
to well-defined logic levels. SDA and SCL are connected to V . Excludes current through R resistors (I ). Total current
CC
FS
RFS
including I
is I + (2 x I
).
RFS
RFS
CC
Note 3: The output-voltage full-scale current ranges must be satisfied to ensure the device meets its accuracy and linearity specifications.
Note 4: Temperature drift excludes drift caused by external resistor.
Note 5: Differential linearity is defined as the difference between the expected incremental current increase with respect to position
and the actual increase. The expected incremental increase is the full-scale range divided by 31.
Note 6: Integral linearity is defined as the difference between the expected value as a function of the setting and the actual value.
The expected value is a straight line between the zero and the full-scale values proportional to the setting.
2
Note 7: Timing shown is for fast-mode (400kHz) operation. This device is also backward compatible with I C standard-mode timing.
Note 8: C —total capacitance of one bus line in pF.
B
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