参数资料
型号: DS75S
厂商: Maxim Integrated
文件页数: 6/14页
文件大小: 183K
描述: IC WATCHDOG THERM 2-W 3/5V 8SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 100
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: ADC(三角积分型),比较器,寄存器库
输出类型: I²C?/SMBus?
输出警报:
输出风扇:
电源电压: 2.7 V ~ 5.5 V
工作温度: -55°C ~ 125°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: 管件
DS75
 
6 of 14
Figure 2. TIMING DIAGRAM 
 
 
 
Note: The DS75 does not delay the SDA line internally with respect to SCL for any length of time.
 
OPERATIONMEASURING TEMPERATURE
The DS75 measures temperature using a bandgap temperature sensing architecture. An on-board delta-
sigma analog-to-digital converter (ADC) converts the measured temperature to a digital value that is
calibrated in degrees centigrade; for Fahrenheit applications a lookup table or conversion routine must be
used. The DS75 is factory-calibrated and requires no external components to measure temperature.
 
At power-up the DS75 immediately begins measuring the temperature and converting the temperature to
a digital value. The resolution of the digital output data is user-configurable to 9, 10, 11, or 12 bits,
corresponding to temperature increments of 0.5癈, 0.25癈, 0.125癈, and 0.0625癈, respectively, with 9-
bit default resolution at power-up. The resolution is controlled via the R0 and R1 bits in the configuration
register as explained in the CONFIGURATION  REGISTER section of this data sheet. Note that the
conversion time doubles for each additional bit of resolution.
After each temperature measurement and analog-to-digital conversion, the DS75 stores the temperature as
a 16-bit twos complement number in the 2-byte temperature register (see Figure 3). The sign bit (S)
indicates if the temperature is positive or negative: for positive numbers S = 0 and for negative numbers S
= 1. The most recently converted digital measurement can be read from the temperature register at any
time. Since temperature conversions are performed in the background, reading the temperature register
does not affect the operation in progress.
Bits 3 through 0 of the temperature register are hardwired to 0. When the DS75 is configured for 12-bit
resolution, the 12 MSbs (bits 15 through 4) of the temperature register will contain temperature data. For
11-bit resolution, the 11 MSbs (bits 15 through 5) of the temperature register will contain data, and bit 4
will read out as 0. Likewise, for 10-bit resolution, the 10 MSbs (bits 15 through 6) will contain data, and
for 9-bit the 9 MSbs (bits 15 through 7) will contain data, and all unused LSbs will contain 0s. Table 3
gives examples of 12-bit resolution digital output data and the corresponding temperatures.
 
 
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DS75S/T&R 制造商:Maxim Integrated Products 功能描述:2-WIRE THERMAL WATCHDOG SOIC T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC WATCHDOG THERM 2-W 3/5V 8SOIC
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DS75S+ 功能描述:板上安装温度传感器 Digital 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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