DS1881 データシートの表示（PDF） - Maxim Integrated
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DS1881 Datasheet PDF : 16 Pages
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Dual NV Audio Taper Digital Potentiometer
NV MEMORY CHARACTERISTICS
(VDD = +2.7V to +5.5V, VCC = +4.5V to +5.5V, TA = 0°C to +70°C.)
Writes
PARAMETER
SYMBOL
CONDITIONS
+70°C (Note 6)
MIN TYP
50,000
MAX UNITS
Note 1: All voltages are referenced to ground.
Note 2: The value of VDD should never exceed VCC, including during power-ups. VCC must be applied before VDD.
Note 3: IDD is specified with SDA = SCL = CE = VDD, resistor pins floating, and digital inputs connected to VDD or GND.
Note 4: ICC is specified with SDA = SCL = CE = VDD, resistor pins floating, and digital inputs connected to VDD or GND, after zero-
crossing detection has timed out.
Note 5: The DS1881 will not obstruct the SDA and SCL lines if VDD 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 I2C standard-mode timing.
Note 10: CB—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.
(VDD = VCC = +5.0V, TA = +25°C.)
IDD vs. VDD
300
SDA = SCL = VCC
280
260
240
220
200
180
160
140
120
100
4.5 4.7 4.9 5.1 5.3 5.5
VOLTAGE (V)
Typical Operating Characteristics
IDD vs. TEMPERATURE
400
SDA = SCL = VDD
350
300
250
200
150
100
50
0
-40 -20 0 20 40 60 80
TEMPERATURE (°C)
IDD vs. SCL FREQUENCY
400
SDA = VDD
350
300
250
200
150
100
50
0
0 50 100 150 200 250 300 350 400
SCL FREQUENCY (kHz)
4 _____________________________________________________________________
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