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參數資料
| 型號： | ELM331SM |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Solid State Thermostat |
| 中文描述： | 固態溫控器 |
| 文件頁數： | 1/4頁 |
| 文件大小： | 28K |
| 代理商： | ELM331SM |
ELM331
< http://www.elmelectronics.com/ >Connection Diagram
PDIP and SOIC
(top view)
V
DD
V
SS
1
2
3
4
8
7
6
5
Solid State Thermostat
The ELM331 is a complete temperature
measurement and control system in an 8 pin
package.
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 - typically 1mA at 5V
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
Primary thermostat in temperature control
systems
Staging control for auxiliary heating or cooling
installations
Under or over temperature alarms
2
3
4
6
7
R
1
R
2
Analog to
Digital
Converter
5
Control
Watchdog
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
ELM331DSB
相關PDF資料 |
PDF描述 |
|---|---|
| ELM331 | Solid State Thermostat |
| ELM331DSB | Solid State Thermostat |
| ELM334 | GARAGE DOORMAN |
| ELM334P | GARAGE DOORMAN |
| ELM334SM | GARAGE DOORMAN |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ELM33205HDL | 功能描述:LED 電路板指示器 Vert LED Assembly 5mm HE Red 635 nm RoHS:否 制造商:Lumex LED 大小:3 mm 照明顏色:Green 波長:565 nm 光強度:30 mcd 安裝類型:SMD/SMT 顯示角:60 deg 封裝:Reel |
| ELM33305GDL | 功能描述:LED 電路板指示器 Vert LED Assembly 5mm Green 565 nm RoHS:否 制造商:Lumex LED 大小:3 mm 照明顏色:Green 波長:565 nm 光強度:30 mcd 安裝類型:SMD/SMT 顯示角:60 deg 封裝:Reel |
| ELM33305HDL | 功能描述:LED 電路板指示器 Vert LED Assembly 5mm HE Red 635 nm RoHS:否 制造商:Lumex LED 大小:3 mm 照明顏色:Green 波長:565 nm 光強度:30 mcd 安裝類型:SMD/SMT 顯示角:60 deg 封裝:Reel |
| ELM33305YDL | 功能描述:LED 電路板指示器 Vert LED Assembly 5mm Yellow 585 nm RoHS:否 制造商:Lumex LED 大小:3 mm 照明顏色:Green 波長:565 nm 光強度:30 mcd 安裝類型:SMD/SMT 顯示角:60 deg 封裝:Reel |
| ELM-3-335 | 制造商:Bivar 功能描述: |
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