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參數(shù)資料
| 型號： | X9269TV24I-2.7 |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | Dual Digitally-Controlled Potentiometers |
| 中文描述： | 雙數(shù)字控制電位器 |
| 文件頁數(shù)： | 5/25頁 |
| 文件大?。?/td> | 422K |
| 代理商： | X9269TV24I-2.7 |
X9269
REV 1.1.11 2/17/03
Characteristics subject to change without notice.
5 of 25
www.xicor.com
PRINCIPLES OF OPERATION
The X9269 is a integrated microcircuit incorporating
four resistor arrays and their associated registers and
counters and the serial interface logic providing direct
communication between the host and the digitally
controlled potentiometers. This section provides detail
description of the following:
– Resistor Array Description
– Serial Interface Description
– Instruction and Register Description.
Array Description
The X9269 is comprised of a resistor array (see Figure
1). Each array contains 255 discrete resistive
segments that are connected in series. The physical
ends of each array are equivalent to the fixed terminals
of a mechanical potentiometer (R
H
and R
L
inputs).
At both ends of each array and between each resistor
segment is a CMOS switch connected to the wiper
(R
W
) output. Within each individual array only one
switch may be turned on at a time.
These switches are controlled by a Wiper Counter
Register (WCR). The 8-bits of the WCR (WCR[7:0])
are decoded to select, and enable, one of 256 switches
(see Table 1).
The WCR may be written directly. These Data
Registers can the WCR can be read and written by the
host system.
Power Up and Down Requirements.
There are no restrictions on the power-up or power-
down conditions of V
CC
and the voltages applied to the
potentiometer pins provided that V
CC
is always more
positive than or equal to V
H
, V
L
, and V
W
, i.e., V
CC
≥
V
H
,
V
L
, V
W
. The V
CC
ramp rate specification is always in
effect.
Figure 1. Detailed Potentiometer Block Diagram
SERIAL DATA PATH
FROM INTERFACE
CIRCUITRY
REGISTER 0
(DR0)
REGISTER 1
(DR1)
REGISTER 2
(DR2)
REGISTER 3
(DR3)
SERIAL
BUS
INPUT
PARALLEL
BUS
INPUT
COUNTER
REGISTER
(WCR)
INC/DEC
LOGIC
UP/DN
CLK
MODIFIED SCL
UP/DN
R
H
R
L
R
W
8
8
C
O
U
N
T
E
R
D
E
C
O
D
E
IF WCR = 00[H] THEN R
W
= R
L
IF
WCR = FF[H]
THEN
R
W
=
R
H
WIPER
One of Two Potentiometers
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| X9269UB16 | Dual Digitally-Controlled Potentiometers |
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| X9269UB16I | Dual Digitally-Controlled Potentiometers |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| X9269TV24IZ-2.7 | 功能描述:IC POT XDCP DUAL 50K OHM 24-SOIC 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 標準包裝:2,500 系列:- 接片:32 電阻（歐姆）:50k 電路數(shù):1 溫度系數(shù):標準值 50 ppm/°C 存儲器類型:易失 接口:3 線串行（芯片選擇，遞增，增/減） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細型，TSOT-23-6 供應(yīng)商設(shè)備封裝:TSOT-23-6 包裝:帶卷 (TR) |
| X9269TV24IZ-2.7T1 | 功能描述:IC POT XDCP DUAL 50K OHM 24-SOIC 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 標準包裝:2,500 系列:- 接片:32 電阻（歐姆）:50k 電路數(shù):1 溫度系數(shù):標準值 50 ppm/°C 存儲器類型:易失 接口:3 線串行（芯片選擇，遞增，增/減） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細型，TSOT-23-6 供應(yīng)商設(shè)備封裝:TSOT-23-6 包裝:帶卷 (TR) |
| X9269UB16 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Dual Digitally-Controlled Potentiometers |
| X9269UB16-2.7 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Dual Digitally-Controlled Potentiometers |
| X9269UB16I | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:Dual Digitally-Controlled Potentiometers |
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