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參數(shù)資料
| 型號： | X93155UM8IZ |
| 廠商： | INTERSIL CORP |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Digitally Controlled Potentiometer (XDCP) |
| 中文描述： | 50K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 32 POSITIONS, PDSO8 |
| 封裝： | ROHS COMPLIANT, PLASTIC, MO-187AA, MSOP-8 |
| 文件頁數(shù)： | 6/8頁 |
| 文件大?。?/td> | 246K |
| 代理商： | X93155UM8IZ |
6
FN8181.1
September 26, 2005
changed by the system or until a power-up/down cycle
recalled the previously stored data. In order to recall the
stored position of the wiper on power-up, the CS pin must be
held HIGH.
This procedure allows the system to always power-up to a
preset value stored in nonvolatile memory; then during
system operation minor adjustments could be made. The
adjustments might be based on user preference, system
parameter changes due to temperature drift, or other system
trim requirements.
The state of U/D may be changed while CS remains LOW.
This allows the host system to enable the device and then
move the wiper up and down until the proper trim is attained.
Symbol Table
Applications Information
Electronic digitally controlled (XDCP) potentiometers provide
three powerful application advantages; (1) the variability and
reliability of a solid-state potentiometer (2) the flexibility of
computer-based digital controls, and (3) the retentivity of
nonvolatile memory used for the storage of multiple
potentiometer settings or data.
Low Voltage High Impedance Instrumentation Amplifier
Mode Selection
CS
INC
U/D
MODE
L
H
Wiper Up
L
L
Wiper Down
H
X
Store Wiper Position
H
X
X
Standby Current
L
X
No Store, Return to Standby
L
H
Wiper Up (not recommended)
L
L
Wiper Down (not recommended)
WAVEFORM
INPUTS
OUTPUTS
Must be
steady
Will be
steady
May change
from Low to
High
May change
from High to
Low
Will change
from Low to
High
Will change
from High to
Low
Don’t Care:
Changes
Allowed
N/A
Changing:
State Not
Known
Center Line
is High
Impedance
V
R
Two terminal variable resistor.
I
+
-
U1A
10K
50K
-
+
U1C
GAIN = 10K
1 +
50K
R
TOTAL
)
(
U1 = LT1467
V
OUT
50K
-
+
U1B
10K
50K
50K
X93155 (R
TOTAL
)
10K
+
10K
-
V
IN
5V
X93155
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