Datasheet
POTENTIOMETER 0 (CONFIGURATON 1)
ATTENUATION vs. SETTING
DS1882 toc01
SETTING (DEC)
ATTENUATION (dB)
54453627189
-80.0
-60.0
-40.0
-20.0
0
-100.0
063
POTENTIOMETER 0 (CONFIGURATON 2)
ATTENUATION vs. SETTING
DS1882 toc02
SETTING (DEC)
ATTENUATION (dB)
302418126
-80.0
-60.0
-40.0
-20.0
0
-100.0
03327211593
POTENTIOMETER 1 (CONFIGURATON 1)
ATTENUATION vs. SETTING
DS1882 toc03
SETTING (DEC)
ATTENUATION (dB)
543618
-80.0
-60.0
-40.0
-20.0
0
-100.0
06345279
DS1882
Dual Log Audio Digital Potentiometer
4 _____________________________________________________________________
NV MEMORY CHARACTERISTICS
(V
DD
= +4.5V to +5.5V, V
CC
= +4.5V to +7.0V, V- = -4.5V to -7.0V, T
A
= 0°C to +70°C.)
PARAMETER
SYMBOL
CONDITIONS MIN
TYP MAX
UNITS
Writes +70°C (Note 6)
50,000
Note 1: All voltages are referenced to ground.
Note 2: The value of V
DD
should never exceed V
CC
, including during power-ups. V
CC
must be applied before V
DD
.
Note 3: I
DD
is specified with SDA = SCL = CE = V
DD
, resistor pins floating, and digital inputs connected to V
DD
or GND.
Note 4: I
CC
is specified with SDA = SCL = CE = V
DD
, resistor pins floating, and digital inputs connected to V
DD
or GND, after zero-
crossing detection has timed out.
Note 5: The DS1882 will not obstruct the SDA and SCL lines if V
DD
is switched off as long as the voltages applied to these inputs
do not violate their minimum and maximum input voltage levels.
Note 6: Guaranteed by design.
Note 7: Above Position 50, these are typical maximum. Guaranteed by characterization.
Note 8: Load is representative of the input of a low-noise audio amp.
Note 9: Timing shown is for fast-mode (400kHz) operation. This device is also backward-compatible with I
2
C standard-mode timing.
Note 10: C
B
—Total capacitance of one bus line in picofarads.
Note 11: If zero-crossing detection is enabled, the EEPROM write does not begin until the current zero-crossing detection is com-
plete. Otherwise, EEPROM write begins after a STOP condition occurs.
Typical Operating Characteristics
(V
DD
= V
CC
= +5.0V, V- = -5.0V, T
A
= +25°C.)