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参数资料
| 型号： | DS1731U+T&R |
| 厂商： | Maxim Integrated |
| 文件页数： | 7/16页 |
| 文件大小： | 435K |
| 描述： | IC THERMOMETER DIG HI-PREC 8MSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 3,000 |
| 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： | ±2°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： | 是 |
| 输出风扇： | 无 |
| 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-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
DS1631/DS1631A/DS1731
7 of 15
Table 3. REGISTER SUMMARY
REGISTER NAME
(USER ACCESS)
SIZE
(BYTES)
MEMORY
TYPE
REGISTER CONTENTS
AND POWER-UP STATE
Temperature
(Read Only)
2
SRAM
Measured temperature in twos complement
format.
Power-up state: -60篊 (1100 0100 0000 0000)
T
H
(Read/Write)
2
EEPROM
Upper alarm trip point in twos complement
format.
Factory state: 15篊 (0000 1111 0000 0000)
T
L
(Read/Write)
2
EEPROM
Lower alarm trip point in twos complement
format.
Factory state: 10篊 (0000 1010 0000 0000)
Configuration
(Various bits are
Read/Write and Read
OnlySee Table 5)
1
SRAM,
EEPROM
Configuration and status information. Unsigned
data.
6 MSbs = SRAM
2 LSbs (POL and 1SHOT bits) = EEPROM
Power-up state: 100011XX (XX = user defined)
OPERATIONMEASURING TEMPERATURE
The DS1631, DS1631A, and DS1731 measure temperature using bandgap-based temperature sensors. A
delta-sigma analog-to-digital converter (ADC) converts the measured temperature to a 9-, 10-, 11-, or 12-
bit (user-selectable) digital value that is calibrated in 癈; for 癋 applications a lookup table or conversion
routine must be used. Throughout this data sheet, the term conversion is used to refer to the entire
temperature measurement and ADC sequence.
The DS1631 and DS1731 always power-up in a low-power idle state, and the Start Convert T command
must be used to initiate conversions. The DS1631A begins conversions automatically at power-up in the
mode determined by the configuration registers 1SHOT bit.
The DS1631, DS1631A, and DS1731 can be programmed to perform continuous consecutive conversions
(continuous-conversion mode) or to perform single conversions on command (one-shot mode). The
conversion mode is programmed through the 1SHOT bit in the configuration register as explained in the
CONFIGURATION REGISTER section of this data sheet. In continuous-conversion mode, the DS1631A
begins performing continuous conversions immediately at power-up, and the DS1631 and DS1731 begin
continuous conversions after a Start Convert T command is issued. For all three devices, consecutive
conversions continue to be performed until a Stop Convert T command is issued, at which time the device
goes into a low-power idle state. Continuous conversions can be restarted at any time using the Start
Convert T command.
In one-shot mode the DS1631A performs a single conversion at power-up, and the DS1631 and DS1731
perform a single temperature conversion when a Start Convert T command is issued. For all three
devices, when the conversion is complete the device enters a low-power idle state and remains in that
state until a single temperature conversion is again initiated by a Start Convert T command.
The resolution of the output digital temperature 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. The
default resolution at power-up is 12 bits, and it can be changed through the R0 and R1 bits in the
configuration register. Note that the conversion time doubles for each additional bit of resolution.
After each conversion, the digital temperature is stored as a 16-bit twos complement number in the two-
byte temperature register as shown in Figure 4. The sign bit (S) indicates if the temperature is positive or
negative: for positive numbers S = 0 and for negative numbers S = 1. The Read Temperature command
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相关代理商/技术参数 |
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| DS1731Z | 制造商:Maxim Integrated Products 功能描述:**OBS** 2-WIRE DIG THERMOMETER (SOI - Rail/Tube |
| DS1742 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Y2KC Nonvolatile Timekeeping RAMwww. |
| DS1742-100 | 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1742-100+ | 功能描述:实时时钟 Timekeeping NV RAM RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1742-100IND | 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
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