參數(shù)資料
型號(hào): DS3903E-020
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 數(shù)字電位計(jì)
英文描述: Triple 128-Position Nonvolatile Digital Potentiometer
中文描述: TRIPLE 90K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 128 POSITIONS, PDSO20
封裝: 0.173 INCH, TSSOP-20
文件頁(yè)數(shù): 4/11頁(yè)
文件大小: 631K
代理商: DS3903E-020
D
Triple 128-Position Nonvolatile
Digital Potentiometer
4
______________________________________________________________________
Note 1:
Note 2:
All voltages are referenced to ground.
I
STBY
specified for V
CC
equal to 3.0V and 5.0V while control port logic pins are driven to the appropriate
logic levels. Appropriate logic levels specify that logic inputs are within a 0.5V of ground or V
CC
for the
corresponding inactive state. WP must be disconnected or connected high.
I/O pins of fast mode devices must not obstruct the SDA and SCL lines if V
CC
is switched off.
A fast mode device can be used in a standard mode system, but the requirement t
SU:DAT
> 250ns must
then be met. This is automatically the case if the device does not stretch the low period of the SCL signal.
If such a device does stretch the low period of the SCL signal, it must output the next data bit to the SDA
line t
RMAX
+ t
SU:DAT
= 1000ns + 250ns = 1250ns before the SCL line is released.
After this period, the first clock pulse is generated.
The maximum t
HD:DAT
has only to be met if the device does not stretch the low period (t
LOW
) of the
SCL signal.
A device must internally provide a hold time of at least 300ns for the SDA signal (referred to the V
IN MIN
of
the SCL signal) in order to bridge the undefined region of the falling edge of SCL.
C
B
—total capacitance of one bus line in picofarads, timing referenced to 0.9 x V
CC
and 0.1 x V
CC
.
EEPROM write begins after a stop condition occurs.
Absolute linearity is used to measure expected wiper voltage as determined by wiper position in a
voltage-divider configuration.
Relative linearity is used to determine the change of wiper voltage between two adjacent wiper positions
in a voltage-divider configuration.
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Note 10:
Note 11:
Typical Operating Characteristics
(V
CC
= 5.0V, 10k
plots apply to both pot0 and pot2, T
A
= +25°C unless otherwise noted.)
10
20
30
40
50
60
70
80
90
100
0
W-L RESISTANCE
vs. WIPER SETTING (90k
)
D
WIPER SETTING
W
)
125
100
75
50
25
0
W-L RESISTANCE
vs. WIPER SETTING (10k
)
D
WIPER SETTING
W
)
125
100
75
50
25
0
2
4
6
8
10
0
STANDBY SUPPLY CURRENT
vs. TEMPERATURE
D
TEMPERATURE (
°
C)
S
μ
A
50
40
-30 -20 -10
10 20
0
30
20
40
60
80
100
120
140
160
0
-40
60 70 80
V
CC
= 5V
V
CC
= 3V
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DS3903E-020/R 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Triple 128-Position Nonvolatile Digital Potentiometer
DS3903E-020/T 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Triple 128-Position Nonvolatile Digital Potentiometer
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