- 您现在的位置：买卖IC网 > Datasheet目录409 > DS1720S/T&R (Maxim Integrated)IC THERMOMETER/STAT DIG 8-SOIC Datasheet资料下载
参数资料
| 型号： | DS1720S/T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 5/14页 |
| 文件大小： | 0K |
| 描述： | IC THERMOMETER/STAT DIG 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,000 |
| 感应温度： | -55°C ~ 125°C |
| 输出类型： | 数字 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 精确度： | ±2.5°C |
| 封装/外壳： | 8-SOIC（0.209"，5.30mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
DS1720
Higher resolutions may be obtained by reading the temperature, and truncating the 0. 5° C bit (the LSB)
from the read value. This value is TEMP_READ. The value left in the counter may then be read by
issuing a READ COUNTER command. This value is the count remaining (COUNT_REMAIN) after the
gate period has ceased. The value of the slope accumulator may be read (using the READ SLOPE
command), yielding the number of counts per degree C (COUNT_PER_C) at that temperature. The actual
temperature may be then be calculated by the user using the following:
TEMPERATURE = TEMP_READ – 0.25 +
DETAILED PIN DESCRIPTION Table 2
( COUNT_PER_C– COUNT_REMAIN)
COUNT_PER_C
PIN
1
2
3
4
5
6
7
8
SYMBOL
DQ
CLK/ CONV
RST
GND
T COM
T LOW
T HIGH
V DD
DESCRIPTION
Data Input/Output pin for 3–wire communication port.
Clock input pin for 3–wire communication port. When the DS1720 is used in
a stand–alone application with no 3–wire port, this pin can be used as a
convert pin. Temperature conversion will begin on the falling edge of CONV .
Reset input pin for 3–wire communication port.
Ground pin.
High/Low Combination Trigge r. Goes high when temperature exceeds T H ;
will reset to low when temperature falls below T L .
Low Temperature Trigge r. Goes high when temperature falls below T L .
High Temperature Trigge r. Goes high when temperature exceeds T H .
Supply Voltag e. 2.7V – 5.5V input power pin.
OPERATION–THERMOSTAT CONTROLS
Three thermally triggered outputs, T HIGH , T LOW , and T COM , are provided to allow the DS1720 to be used
as a thermostat, as shown in Figure 3. When the DS1720’s temperature meets or exceeds the value stored
in the high temperature trip register, the output T HIGH becomes active (high) and remains active until the
DS1720’s measured temperature becomes less than the stored value in the high temperature register, TH.
The T HIGH output can be used to indicate that a high temperature tolerance boundary has been met or
exceeded, or as part of a closed loop system can be used to activate a cooling system and to deactivate it
when the system temperature returns to tolerance.
The T LOW output functions similarly to the T HIGH output. When the DS1720’s measured temperature
equals or falls below the value stored in the low temperature register, the T LOW output becomes active.
T LOW remains active until the DS1720’s temperature becomes greater than the value stored in the low
temperature register, T L . The T LOW output can be used to indicate that a low temperature tolerance
boundary has been met or exceeded, or as part of a closed loop system, can be used to activate a heating
system and to deactivate it when the system temperature returns to tolerance.
The T COM output goes high when the measured temperature meets or exceeds T H , and will stay high until
the temperature equals or falls below T L . In this way, any amount of hysteresis can be obtained.
5 of 14
相关PDF资料 |
PDF描述 |
|---|---|
| DS1820 | IC DGTL THERMOMETER TO92-3 |
| DS1822+PAR | IC THERMOMETER ECONO DIG TO-92 |
| DS1822Z/T&R | IC THERMOMETER ECONO DIG 8-SOIC |
| DS1870E-010+T&R | IC CNTRLR RF POWER AMP 16TSSOP |
| DS18S20-PAR+T&R | IC THERM MICROLAN HI-PREC TO-92 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1721 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:2-Wire Digital Thermometer and Thermostat |
| DS1721S | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
| DS1721S/T&R | 制造商:Maxim Integrated Products 功能描述:2-WIRE DIGITAL THERMOMETER SOIC T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER/STAT DIG HP 8SOIC |
| DS1721S/T&R+W | 制造商:Maxim Integrated Products 功能描述:DIGITAL THERMOMETER AND THERMOSTAT - Tape and Reel |
| DS1721S/T&R | 功能描述:板上安装温度传感器 RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor |
发布紧急采购，3分钟左右您将得到回复。