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參數(shù)資料
| 型號(hào)： | ELM341SM |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | LOW POWER THERMOSTAT |
| 中文描述： | 低功率溫控器 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大?。?/td> | 28K |
| 代理商： | ELM341SM |
ELM341
< http://www.elmelectronics.com/ >Connection Diagram
PDIP and SOIC
(top view)
V
DD
V
SS
1
2
3
4
8
7
6
5
Low Power Thermostat
The ELM341 is a complete temperature
measurement and control system in an 8 pin
package. It automatically reverts to a very low power
sleep mode between measurements, making it
suitable for battery operation.
This integrated circuit is designed to compare
two resistances and drive an output pin depending
on the relative value of each. Typically, one of the
resistors will be an NTC thermistor, and the other
one will be a temperature independent resistor
(whether fixed or variable). When the magnitude of
the resistance connected to pin 2 exceeds the value
of the resistance connected to pin 3, the output pin
will be driven to a high state. Hysteresis maintains
the output in that state until the relative values differ
by approximately 8% (or typically 2°C for a 10K
thermistor).
To reduce the possibility of sporadic outputs, a
condition must exist for three successive cycles, or 6
seconds, before the output pin can change state.
Low power CMOS design
Wide supply range - 3.0 to 5.5 volt operation
Built-in proportional hysteresis
Measurement in progress output
Time delay on operate improves noise immunity
Internal pullup resistor on the reset input
High current drive outputs - up to 25 mA
Sleep mode reduces power requirements
Backup thermostats
Under or over temperature alarm circuits
2
3
4
6
7
R
1
R
2
Analog to
Digital
Converter
5
Control
Sleep
Timer
Cap
MIP
Out
R
1
R
2
reset
3 Consecutive
Measurements
Measurement in Progress (busy)
Overrange
V
DD
Out
MIP
R
1
> R
2
reset
Description
Applications
Block Diagram
1 of 4
Features
ELM341DSB
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| ELM380P | BATTERY CHARGER TIMER |
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| ELM34205RD5V | 功能描述:LED 電路板指示器 Vert LED Assembly 5mm Red 655 nm RoHS:否 制造商:Lumex LED 大小:3 mm 照明顏色:Green 波長:565 nm 光強(qiáng)度:30 mcd 安裝類型:SMD/SMT 顯示角:60 deg 封裝:Reel |
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