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參數(shù)資料
| 型號(hào)： | X9241AMVI |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Quad Digitally Controlled Potentiometer (XDCP) |
| 中文描述： | 四重?cái)?shù)控電位器（數(shù)字電位器） |
| 文件頁數(shù)： | 8/18頁 |
| 文件大小： | 364K |
| 代理商： | X9241AMVI |
X9241A
Characteristics subject to change without notice.
8 of 18
REV 1.1.13 12/09/02
www.xicor.com
Figure 8. Detailed Potentiometer Block Diagram
Serial Data Path
From Interface
Circuitry
Register 0
Register 1
Register 2
Register 3
Serial
Bus
Input
Parallel
Bus
Input
Wiper
Counter
Register
INC/DEC
Logic
UP/DN
CLK
Modified SCL
UP/DN
V
H
/R
H
If WCR = 00[H] then V
W
/R
W
= V
L
/R
L
If WCR = 3F[H] then V
W
/R
W
= V
H
/R
H
8
6
C
o
u
n
t
e
r
D
e
c
o
d
e
Cascade
Control
Logic
DW
CM
2
V
L
/R
L
V
W
/R
W
Cascade Mode
The X9241A provides a mechanism for cascading the
arrays. That is, the sixty-three resistor elements of one
array may be cascaded (linked) with the resistor
elements of an adjacent array. The V
L
/R
L
of the higher
order array must be connected to the V
H
/R
H
of the
lower order array (See Figure 9).
Cascade Control Bits
The data byte, for the three-byte commands, contains 6
bits (LSBs) for defining the wiper position plus two high
order bits, CM (Cascade Mode) and DW (Disable
Wiper, normal operation).
The state of the CM bit (bit 7 of WCR) enables or
disables cascade mode. When the CM bit of the WCR
is set to “0” the potentiometer is in the normal operation
mode. When the CM bit of the WCR is set to “1” the
potentiometer is cascaded with its adjacent higher
order potentiometer. For example; if bit 7 of WCR2 is
set to “1”, pot 2 will be cascaded to pot 3.
The state of DW enables or disables the wiper. When
the DW bit of the WCR is set to “0” the wiper is enabled;
when set to “1” the wiper is disabled. If the wiper is
disabled, the wiper terminal will be electrically isolated
and float.
When operating in cascade mode V
H
/R
H
, V
L
/R
L
and
the wiper terminals of the cascaded arrays must be
electrically connected externally. All but one of the
wipers must be disabled. The user can alter the wiper
position by writing directly to the WCR or indirectly by
transferring the contents of the Data Registers to the
WCR or by using the Increment/Decrement command.
When using the Increment/Decrement command the
wiper position will automatically transition between
arrays. The current position of the wiper can be
determined by reading the WCR registers; if the DW bit
is “0”, the wiper in that array is active. If the current
wiper position is to be maintained on power-down a
global XFR WCR to Data Register command must be
issued to store the position in NV memory before
power-down.
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| X9241AMVIT1 | 功能描述:IC XDCP QUAD 2/10/10/50K 20TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 標(biāo)準(zhǔn)包裝:2,500 系列:XDCP™ 接片:256 電阻（歐姆）:100k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 ±300 ppm/°C 存儲(chǔ)器類型:非易失 接口:I²C（設(shè)備位址） 電源電壓:2.7 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
| X9241AMVIT2 | 功能描述:IC XDCP QUAD 2/10/10/50K 20TSSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 標(biāo)準(zhǔn)包裝:2,500 系列:XDCP™ 接片:256 電阻（歐姆）:100k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 ±300 ppm/°C 存儲(chǔ)器類型:非易失 接口:I²C（設(shè)備位址） 電源電壓:2.7 V ~ 5.5 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
| X9241AMVIZ | 功能描述:IC POT DGTL QUAD 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 接片:256 電阻（歐姆）:100k 電路數(shù):2 溫度系數(shù):標(biāo)準(zhǔn)值 35 ppm/°C 存儲(chǔ)器類型:易失 接口:6 線串行（芯片選擇，遞增，增/減） 電源電壓:2.6 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
| X9241AMVIZT1 | 功能描述:IC XDCP QUAD 2/10/10/50K 20TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:XDCP™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 接片:256 電阻（歐姆）:100k 電路數(shù):2 溫度系數(shù):標(biāo)準(zhǔn)值 35 ppm/°C 存儲(chǔ)器類型:易失 接口:6 線串行（芯片選擇，遞增，增/減） 電源電壓:2.6 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:帶卷 (TR) |
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