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參數(shù)資料
| 型號： | DS1616 |
| 元件分類： | 溫度傳感器 |
| 英文描述： | Temperature and Three Input MUX’ed 8-bit Data Recorder |
| 中文描述： | 溫度和三個輸入MUX\u0026#39;ed 8位數(shù)據(jù)記錄器 |
| 文件頁數(shù)： | 9/29頁 |
| 文件大小： | 194K |
| 代理商： | DS1616 |
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DS1616
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TEMPERATURE DATA BYTE FORMAT
Table 1
MSb
T7
T6
T5
T4
LSb
T3
T2
T1
T0
When a datalog mission has been initiated and the thermal sensor is enabled (CS0=1), the DS1616
provides temperature recording at regular intervals. However, the device also allows for immediate
temperature sensing upon a user’s command when the device is not currently on a datalog mission and
the thermal sensor is enabled (CS0=1). This is accomplished by issuing the Read Data command to the
DS1616 over the serial interface.
The most recently recorded temperature value is written to the Current Temperature register, regardless of
whether that value was recorded from a datalog mission or from the issuance of the Read Data command.
The status of the contents of this register is provided by the Data Ready (DR) bit in the Status 1 register.
If DR is a logic 1, the data is valid. If DR is a logic 0, the data may not be reliable. If CS0 in the Control
2 register is a 0 such that the thermal sensor is disabled, the value in the Current Temperature register will
be 11111111b. The Read Data command will not output this byte of data.
During a datalog mission, the DR bit is cleared to a logic 0 when a temperature conversion has been
initiated and is set to a logic 1 upon the completion of the conversion. Likewise, the DR bit is cleared
immediately after the Read Data command is issued and is set to a logic 1 upon the completion of the
conversion. The Read Data command will only read the values in the current temperature/ADC data that
have been enabled by the CSx[03] bits in the control 2 register.
ANALOG-TO-DIGITAL CONVERTER (ADC)
The DS1616 contains an integrated 8-bit ADC with a 3 to 1 input mux to allow multiple sensors to be
monitored. An on-chip voltage reference is also provided by an integrated band gap circuit (2.04V
±
3%).
The ADC input voltage must not be greater than the battery voltage.
An analog-to-digital conversion is the process of assigning a digital value to an analog input voltage.
This code represents the input value as a fraction of the full scale voltage (FSV) range. Thus the FSV
range is then divided by the ADC into 256 codes (8 bits). The FSV range is bounded by an upper limit
equal to the reference voltage and the lower limit which is ground. The 2.04V (typical) bandgap
reference provides a resolution of 8mV between codes.
An input voltage equal to the reference voltage converts to FFh while an input voltage equal to ground
converts to 00h. The relative linearity of the ADC is
±
0.5 LSB.
When a datalog mission has been initiated and one or more of the Analog Inputs are enabled (CS[1-3] =
1), the DS1616 provides data conversion and recording at regular intervals. However, the device also
allows for immediate data conversion upon a user’s command when the device is not currently
performing a conversion and one or more of the Analog Inputs are enabled (CS[1-3] = 1). This is
accomplished by issuing the Read Data command to the DS1616 over the serial interface.
The most recently recorded data value is written to the Current Data register that corresponds to the
analog channel(s) that is(are) enabled, regardless of whether that value was recorded from a datalog
mission or from the issuance of the Read Data command. The status of the contents of this register is
provided by the Data Ready (DR) bit in the Status 1 register. If DR is a logic 1, the data is valid. If DR is
a logic 0, the data may not be reliable. If a channel is not enabled, CS[1-3] is a logic 0, the contents of
the corresponding Current Data register will be 00000000b and not outputted when a Read Data
command is issued.
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| DS1621 | Digital Thermometer and Thermostat |
| DS1624 | Digital Thermometer and Memory |
| DS1626 | High-Precision 3-Wire Digital Thermometer and Thermostat |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1616K-000 | 功能描述:KIT EVAL TEMP A/D DATA RECORDER RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產(chǎn)零件編號 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| DS1616S | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Temperature and Three Input MUX’ed 8-bit Data Recorder |
| DS-1616ZJ | 制造商:Hikvision USA 功能描述:Pendant Wall Mount Bracket 3.8In X 7.65In X 12.2In 制造商:HIKVISION 功能描述:PENDANT WALL MOUNT BRACKET 3.8IN X 7.65IN X 12.2IN |
| DS16177D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:4-Bit Bus Transceiver |
| DS16179 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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