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參數資料
| 型號： | X9448 |
| 廠商： | Intersil Corporation |
| 英文描述： | Mixed Signal with 2-Wire Interface |
| 中文描述： | 混合信號的2線接口 |
| 文件頁數： | 1/20頁 |
| 文件大?。?/td> | 127K |
| 代理商： | X9448 |
REV 1.0 6/21/00
Characteristics subject to change without notice.
1 of 20
www.xicor.com
Mixed Signal with 2-Wire Interface
X9448
Dual Digitally Controlled Potentiometer (XDCP
) & Voltage Comparator
FEATURES
Two digitally controlled potentiometers and two
voltage comparators in one package
2-wire serial interface
Register oriented format
—Direct read/write wiper position
—Store as many as four positions per pot
Fast response comparator
Enable, latch, or shutdown comparator outputs
through ACR
Auto-recall of WCR and ACR data from R0
Hardware write protection, WP
Separate analog and digital/system supplies
Direct write cell
—Endurance–100,000 data changes per bit per
register
—Register data retention–100 years
16-bytes of EEPROM memory
Power saving feature and low noise
Two 10K
or two 2.5K
Resolution: 64 taps each pot
24-lead TSSOP and 24-lead SOIC packages
potentiometers
DESCRIPTION
The X9448 integrates two nonvolatile digitally con-
trolled potentiometers (XDCP) and two voltage com-
parators on a CMOS monolithic microcircuit.
The X9448 contains two resistor arrays, each com-
posed of 63 resistive elements. Between each element
and at either end are tap points accessible to the wiper
elements. The position of the wiper element on the
array is controlled by the user through the two wire
serial bus interface.
Each potentiometer has an associated voltage com-
parator. The comparator compares the external input
voltage V
NI
with the wiper voltage V
put voltage level to a logic high or low.
W
and sets the out-
Each resistor array and comparator has associated
with it a wiper counter register (WCR), analog control
register (ACR), and eight 6-bit data registers that can
be directly written and read by the user. The contents
of the wiper counter register controls the position of
the wiper on the resistor array. The contents of the
analog control register controls the comparator and its
output. The potentiometer is programmed with a
2-wire serial interface
BLOCK DIAGRAM
V
OUT (0,1)
(R
0
-R
3
)
0,1
Interface
and
Control
Circuitry
SCL
SDA
A0
A1
A2
A3
V
H (0,1)
V
L (0,1)
WP
V
W (0,1)
V
NI (0,1)
+
–
WCR
0,1
(R
0
-R
3
)
0,1
ACR
0,1
XDCP is a trademark of Xicor, Inc.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| X9448-2.7 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Mixed Signal with 2-Wire Interface |
| X9448WP24 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Mixed Signal with 2-Wire Interface |
| X9448WP24-2.7 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Mixed Signal with 2-Wire Interface |
| X9448WP24I | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Mixed Signal with 2-Wire Interface |
| X9448WP24I-2.7 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Mixed Signal with 2-Wire Interface |
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