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参数资料
| 型号： | DS1720S+T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 4/14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
TEMPERATURE MEASURING CIRCUITRY Figure 2
This calculation is done inside the DS1720 to provide 0. 5° C resolution. The temperature reading is
provided in a 9–bit, two’s complement reading by issuing a READ TEMPERATURE command. Table 1
describes the exact relationship of output data to measured temperature. The data is transmitted serially
through the 3–wire serial interface, LSB first. The DS1720 can measure temperature over the range of
–5 5° C to +12 5° C in 0. 5° C increments. For Fahrenheit usage, a lookup table or conversion factor must be
used.
TEMPERATURE/DATA RELATIONSHIPS Tabl e 1
TEMP
+85 ° C
+25 ° C
+? ° C
+0 ° C
-? ° C
-25 ° C
DIGITAL OUTPUT
(Binary)
0 10101010
0 00110010
0 00000001
0 00000000
1 11111111
1 11001110
DIGITAL OUTPUT
(Hex)
00AA
0032h
0001h
0000h
01FFh
01CEh
Since data is transmitted over the 3–wire bus LSB first, temperature data can be written to/read from the
DS1720 as either a 9–bit word (taking RST low after the 9 th (MSB) bit), or as two transfers of 8–bit
words, with the most significant 7 bits being ignored or set to zero, as illustrated in Table 1. After the
MSB, the DS1720 will output 0s.
Note that temperature is represented in the DS1720 in terms of a ? ° C LSB, yielding the following 9–bit
format:
MSB
LSB
X X
X
X
X
X
X
1 1
1
0
0
1
1
1
0
T = -25 ° C
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相关代理商/技术参数 |
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| 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 |
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