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参数资料
| 型号： | MAX6633MSA+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 11/16页 |
| 文件大小： | 0K |
| 描述： | IC TEMP SENSOR SMBUS 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 温度监控系统（传感器） |
| 传感器类型： | 内部 |
| 感应温度： | -55°C ~ 150°C |
| 精确度： | ±1°C（最小值） |
| 拓扑： | ADC，寄存器库 |
| 输出类型： | I²C?/SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -55°C ~ 150°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
12-Bit Plus Sign Temperature Sensors with
SMBus/I 2 C-Compatible Serial Interface
VCC
+3V TO +5.5V
HEATER
V CC
+3V TO +5.5V
+12V
8
10k Ω
FAN
12V 300mA
MOTOR
8
4k Ω
RELAY
5VDC, 20mA
OVERT
3
LOGIC-LEVEL
MOSFET
125VAC, 1A
MAX6634
MAX6635
4
ALERT
3
2N3904
HEATER
SUPPLY
4
Figure 10. Simple Thermostat
Temperature Alert
(MAX6634/MAX6635)
ALERT has programmable polarity and two modes:
comparator and interrupt. Polarity and mode are select-
ed through the Configuration register (Table 4). The
ALERT output is open drain.
Interrupt Mode
With ALERT in interrupt mode, the MAX6634/MAX6635
look for a T HIGH or a T LOW fault. The ALERT pin asserts
an alarm for an undertemperature fault, as well as for
an overtemperature fault. Once either fault has
occurred, it remains active until deasserted by a read
of any register. The device then begins to look for a
temperature change crossing the hysteresis level. The
activation of ALERT is subject to the depth of the fault
queue.
For example: If T HIGH is set to 100°C, T HYST is set to
20°C, and the fault queue depth is set to 4, ALERT
does not assert until four consecutive conversions
exceed 100°C. If the temperature is then read through
the I 2 C-compatible interface, ALERT deasserts. ALERT
asserts again when four consecutive conversions are
less than 80°C.
Comparator Mode
In comparator mode, ALERT is asserted when the num-
ber of consecutive conversions exceeding the value in
the T HIGH register, or lower than the value in the T LOW
register, is equal to the depth of the fault queue. ALERT
deasserts when the number of consecutive conversions
Figure 11. Fan Controller
less than T HIGH - T HYST or greater than T LOW + T HYST
is equal to the depth of the fault queue.
For example: If T HIGH is set to 100°C, T LOW is set to
80°C, and the fault queue depth is set to four, ALERT
does not assert until four consecutive conversions
exceed 100°C, or are below 80°C. ALERT only
deasserts if four consecutive conversions are less than
T HIGH - T HYST or greater than T LOW + T HYST .
Comparator mode allows autonomous clearing of an
ALERT fault without the intervention of a master and is
ideal to use for driving a thermostat (Figure 10).
Overtemperature Alarm (MAX6635)
The MAX6635 also includes an overtemperature output
that is always in comparator mode. Whenever the tem-
perature exceeds a value in the programmable T MAX
register, OVERT is asserted. OVERT only deasserts
after the temperature drops below T MAX - T HYST . When
the fault queue is activated, OVERT is subject to that
queue, which sets the number of faults that must occur
before OVERT asserts or deasserts. This helps prevent
spurious alarms in noisy environments.
Comparator mode also allows autonomous clearing of
an OVERT fault without the intervention of a master and
thus is ideal to use for driving a cooling fan (Figure 11).
In this application, the polarity of OVERT is active high.
Shutdown
The MAX6633/MAX6634/MAX6635 feature a shutdown
mode, accessible through the serial interface that
saves power by turning off everything except the POR
______________________________________________________________________________________
11
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6634MSA | 功能描述:板上安装温度传感器 12-Bit + Sign Temperature 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 |
| MAX6634MSA+ | 功能描述:板上安装温度传感器 12-Bit + Sign Temperature 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 |
| MAX6634MSA+T | 功能描述:板上安装温度传感器 12-Bit + Sign Temperature 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 |
| MAX6634MSA-T | 功能描述:板上安装温度传感器 12-Bit + Sign Temperature 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 |
| MAX6635EVKIT+ | 功能描述:板上安装温度传感器 MAX6635 Eval Kit 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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