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参数资料
| 型号： | MAX31722MUA+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 9/15页 |
| 文件大小： | 761K |
| 描述： | IC THERMOMETER/STAT SPI-3W 8UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 功能： | 温度计，恒温计 |
| 传感器类型： | 内部 |
| 感应温度： | -55°C ~ 125°C |
| 精确度： | ±3°C（最小值） |
| 拓扑： | 比较器，寄存器库 |
| 输出类型： | 3 线/SPI? 串行 |
| 输出警报： | 是 |
| 输出风扇： | 无 |
| 电源电压： | 1.7 V ~ 3.7 V |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 托盘 |
| 其它名称： | 90-31722+U00 |
Digital Thermometers and Thermostats
with SPI/3-Wire Interface
9
Thermostat
The devices thermostat can be programmed to power
up in either comparator mode or interrupt mode, which
activate and deactivate the open-drain thermostat output
(TOUT) based on user-programmable trip points (T
HIGH
and T
LOW
). The T
HIGH
and T
LOW
registers contain
Celsius temperature values in twos complement format
and are stored in EEPROM memory. As such, the values
are nonvolatile and can be programmed prior to install-
ing the devices for stand-alone operation.
The data format of the T
HIGH
and T
LOW
registers is
identical to that of the temperature register (Figure 5).
After every temperature conversion, the measurement is
compared to the values stored in the T
HIGH
and T
LOW
registers. The T
HIGH
register is assigned to address
locations 03h (LSB) and 04h (MSB), and the T
LOW
reg-
ister is assigned to address locations 05h (LSB) and
06h (MSB). The TOUT output is updated based on the
result of the comparison and the operating mode of the
devices. The number of T
HIGH
and T
LOW
bits used dur-
ing the thermostat comparison is equal to the conversion
resolution set by the R1 and R0 bits in the configuration/
status register. For example, if the resolution is 9 bits,
only the nine MSBs of T
HIGH
and T
LOW
are used by the
thermostat comparator.
If the user does not wish to use the thermostat capa-
bilities of the devices, the TOUT output should be left
unconnected. Note that if the thermostat is not used, the
T
HIGH
and T
LOW
registers can be used for general stor-
age of system data.
Comparator Mode
When the thermostat is in comparator mode, TOUT
can be programmed to operate with any amount of
hysteresis. The TOUT output becomes active when the
measured temperature exceeds the T
HIGH
value. TOUT
then stays active until the first time the temperature falls
below the value stored in T
LOW
. Putting the devices into
shutdown mode does not clear TOUT in comparator
mode. Figure 6 illustrates thermostat comparator mode
operation.
Interrupt Mode
In interrupt mode, the TOUT output first becomes active
when the measured temperature exceeds the T
HIGH
value. Once activated, in continuous conversion mode
TOUT can only be cleared by either putting the devices
into shutdown mode or by reading from any register
(configuration/status, temperature, T
HIGH
, or T
LOW
)
on the devices. In one-shot mode, TOUT can only be
cleared by reading from any register (configuration/
status, temperature, T
HIGH
, or T
LOW
) on the devices.
Figure 6. TOUT Operation Example
T
HIGH
T
LOW
TEMPERATURE
TOUT OUTPUTCOMPARATOR MODE
TOUT OUTPUTINTERRUPT MODE
INACTIVE
INACTIVE
ACTIVE
ACTIVE
CONVERSIONS
ASSUMES A READ
HAS OCCURED
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX31722MUA+ | 功能描述:板上安装温度传感器 SPI/3-Wire Digital Temp Sensor 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 |
| MAX31722MUA+T | 功能描述:板上安装温度传感器 SPI/3-Wire Digital Temp Sensor 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 |
| MAX31723MUA+ | 功能描述:板上安装温度传感器 SPI/3-Wire Digital Temp Sensor 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 |
| MAX31723MUA+T | 功能描述:板上安装温度传感器 SPI/3-Wire Digital Temp Sensor 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 |
| MAX31723PMB1# | 功能描述:温度传感器开发工具 MAX31723 Peripheral Module RoHS:否 制造商:Texas Instruments 产品类型:Temperature Sensors and Control ICs 工具用于评估:MSP430G2553 接口类型:USB 工作电源电压: 工作电源电流: |
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