参数资料
型号: DS1822-PAR
厂商: DALLAS SEMICONDUCTOR
元件分类: Switch/Digital Output Temperature Sensor
英文描述: DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 0.20Cel, ROUND, THROUGH HOLE MOUNT
封装: TO-92, 3 PIN
文件页数: 1/19页
文件大小: 138K
代理商: DS1822-PAR
1 of 19
043001
FEATURES
Unique 1-wire interface requires only one
port pin for communication
Derives power from data line (“parasite
power”)—does not need a local power supply
Multi-drop capability simplifies distributed
temperature sensing applications
Requires no external components
±2.0°C accuracy from –10°C to +85°C
Measures temperatures from –55°C to
+100°C (–67°F to +212°F)
Thermometer resolution is user-selectable
from 9 to 12 bits
Converts temperature to 12-bit digital word in
750 ms (max.)
User–definable temperature alarm settings
Alarm search command identifies and
addresses
devices
whose
temperature
is
outside of programmed limits (temperature
alarm condition)
Software compatible with the DS18B20-PAR
Ideal for use in remote sensing applications
(e.g., temperature probes) that do not have a
local power source
PIN ASSIGNMENT
PIN DESCRIPTION
GND - Ground
DQ
- Data In/Out
NC
- No Connect
DESCRIPTION
The DS1822-PAR digital thermometer provides 9 to 12–bit centigrade temperature measurements and has
an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS1822-PAR
does not need an external power supply because it derives power directly from the data line (“parasite
power”). The DS1822-PAR communicates over a 1-wire bus, which by definition requires only one data
line (and ground) for communication with a central microprocessor. It has an operating temperature
range of –55°C to +100°C and is accurate to
±2.0°C over a range of –10°C to +85°C.
Each DS1822-PAR has a unique 64-bit identification code, which allows multiple DS1822-PARs to
function on the same 1–wire bus; thus, it is simple to use one microprocessor to control many
DS1822-PARs distributed over a large area. Applications that can benefit from this feature include
HVAC environmental controls, temperature monitoring systems inside buildings, equipment or
machinery, and process monitoring and control systems.
DS1822-PAR
Econo 1-Wire
Parasite-Power
Digital Thermometer
www.dalsemi.com
1
(BOTTOM VIEW)
2
3
TO-92
(DS1822-PAR)
DALLAS
1822P
1
GND
DQ
NC
2 3
相关PDF资料
PDF描述
DS1822Z/T&R DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT
DS1822/T&R DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT
DS1822 DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT
DS1822+T&R DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, THROUGH HOLE MOUNT
DS1822Z DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT
相关代理商/技术参数
参数描述
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