- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385272 > DS1801 (MAXIM INTEGRATED PRODUCTS INC) Dual Audio Taper Potentiometer(雙路音頻抽頭電位器) PDF資料下載
參數(shù)資料
| 型號： | DS1801 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | Dual Audio Taper Potentiometer(雙路音頻抽頭電位器) |
| 中文描述： | DUAL 45K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 65 POSITIONS, PDIP14 |
| 封裝： | 0.300 INCH, PLASTIC, DIP-14 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 86K |
| 代理商： | DS1801 |
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
ADM9690
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
World Wide Web Site: http://www.analog.com
Fax: 617/326-8703
Analog Devices, Inc., 1997
Power Supply and Watchdog Tmer
Monitoring Circuit
FUNCT IONAL BLOCK DIAGRAM
WATCHDOG
TRANSITION
DETECTOR
V
CC
V
MON
OSC SEL1
OSC SEL2
RESET(2)
TIMER
RESET(1)
TIMER
4.40V
ADM9690
RESET(1)
RESET(2)
WATCHDOG
INPUT (WDI)
GND
WATCHDOG
TIMEBASE
FEATURES
Precision Voltage Monitor (4.40 V)
Watchdog Timeout Monitor
Selectable Watchdog Timeout—0.75 ms, 1.5 ms,
12.5 ms, 25 ms
Two RESET Outputs
APPLICATIONS
Microprocessor Systems
Computers
Printers
Controllers
Intelligent Instruments
GE NE RAL DE SCRIPT ION
T he ADM9690 contains a voltage monitoring comparator and a
watchdog timer monitor. It is designed to monitor the 5 V
power supply to a microprocessor and the microprocessor opera-
tion via a watchdog function.
T he voltage monitoring comparator monitors the voltage on
V
MON
. If it drops outside tolerance, as will happen during a
power-fail, two reset signals are generated. Both reset signals go
active (low) simultaneously. T hey will remain active while
V
MON
is below the threshold, and for 50 ms (
RESET(1)
) or
60 ms (
RESET(2)
) after V
MON
climbs above the reset thresh-
old.
RESET(1)
is intended to provide a power-on reset signal
for the
μ
P while
RESET(2)
is used to hold additional circuitry
in a reset state until the
μ
P has regained control following a
power-up.
T he watchdog timer monitoring circuit is designed to monitor
the activity on the WDI input. T his input is normally connected
to an output line on the
μ
P. Its function is to check that the
microprocessor has not stalled in an infinite loop. If there is a
period of inactivity for the watchdog timeout period, both reset
outputs are activated. As above,
RESET(1)
remains low for
50 ms while
RESET(2)
remains low for an additional 10 ms.
T he watchdog timer is restarted when
RESET(1)
goes inactive.
T he actual watchdog timeout period is adjustable using two
select inputs SEL1 and SEL2.
T he ADM9690 is available in an 8-lead SOIC package. It is
specified over the industrial temperature range.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1802 | Dual Audio Taper Potentiometer with Push Button Control(帶按鈕控制的雙路音頻抽頭電位器) |
| DS1803 | Addressable Dual Digital Potentiometer(可尋址雙路數(shù)字電位器) |
| DS1804 | NV Trimmer Potentiometer(非易失性微調(diào)電位器) |
| DS1806 | Digital Sextet Potentiometer(數(shù)字六位電位器) |
| DS1807 | Addressable Dual Audio Taper Potentiometer(可尋址雙路音頻抽頭電位器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1801+ | 功能描述:數(shù)字電位計 IC Dual Audio Taper Potentiometer RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| DS1801E | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Dual Audio Taper Potentiometer |
| DS1801E-014 | 功能描述:數(shù)字電位計 IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| DS1801E-014/T&R | 制造商:Maxim Integrated Products 功能描述:DUAL AUDIO TAPER POT 14L TSSOP T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC POT DUAL AUDIO TAPER 14-TSSOP |
| DS1801E-014/T&R | 功能描述:數(shù)字電位計 IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。