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參數資料
| 型號： | ADT7461AR-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調理 |
| 英文描述： | 【1∑C Temperature Monitor with Series Resistance Cancellation |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO8 |
| 封裝： | MS-012-AA, SOIC-8 |
| 文件頁數： | 11/24頁 |
| 文件大小： | 854K |
| 代理商： | ADT7461AR-REEL7 |
ADT7461
Table 6. Temperature Data Format (Local and Remote Temperature High Byte)
Temperature
–55°C
0°C
+1°C
+10°C
+25°C
+50°C
+75°C
+100°C
+125°C
+127°C
+150°C
Binary
0 000 0000
2
0 000 0000
0 000 0001
0 000 1010
0 001 1001
0 011 0010
0 100 1011
0 110 0100
0 111 1101
0 111 1111
0 111 1111
3
Offset Binary
1
0 000 1001
0 100 0000
0 100 0001
0 100 1010
0 101 1001
0 111 0010
1 000 1011
1 010 0100
1 011 1101
1 011 1111
1 101 0110
1
Offset binary scale temperature values are offset by +64.
2
Binary scale temperature measurement returns 0 for all temperatures < 0°C.
3
Binary scale temperature measurement returns 127 for all temperature > 127°C.
The user may switch between measurement ranges at any time.
Switching the range will also switch the data format. The next
temperature result following the switching will be reported back
to the register in the new format. However, the contents of the
limit registers will not change. It is up to the user to ensure that
when the data format changes, the limit registers are repro-
grammed as necessary. More information on this can be found
in the
section.
Limit Registers
ADT7461 REGISTERS
The ADT7461 contains 22 8-bit registers in total. These regis-
ters are used to store the results of remote and local temperature
measurements and high and low temperature limits and to con-
figure and control the device. A description of these registers
follows, and further details are given in Table 7 through Table 11.
Address Pointer Register
The address pointer register itself does not have, or require, an
address, as the first byte of every write operation is automati-
cally written to this register. The data in this first byte always
contains the address of another register on the ADT7461, which
is stored in the address pointer register. It is to this register
address that the second byte of a write operation is written to or
to which a subsequent read operation is performed.
The power-on default value of the address pointer register is
0×00, so if a read operation is performed immediately after
power-on, without first writing to the address pointer, the value
of the local temperature will be returned, since its register
address is 0×00.
Temperature Value Registers
The ADT7461 has three registers to store the results of local and
remote temperature measurements. These registers can only be
written to by the ADC and can be read by the user over the
SMBus. The local temperature value register is at Address 0×00.
The external temperature value high byte register is at Address
0×01, with the low byte register at Address 0×10. The power-on
default for all three registers is 0×00.
Configuration Register
The configuration register is Address 0×03 at read and Address
0×09 at write. Its power-on default is 0×00. Only four bits of the
configuration register are used. Bits 0, 1, 3, and 4 are reserved
and should not be written to by the user.
Bit 7 of the configuration register is used to mask the ALERT
output. If Bit 7 is 0, the ALERT output is enabled. This is the
power-on default. If Bit 7 is set to 1, the ALERT output is dis-
abled. This only applies if Pin 6 is configured as ALERT. If Pin 6
is configured as THERM2, then the value of Bit 7 has no effect.
If Bit 6 is 0, power-on default, the device is in operating mode
with the ADC converting. If Bit 6 is set to 1, the device is in
standby mode and the ADC does not convert. The SMBus does,
however, remain active in standby mode, so values can be read
from or written to the ADT7461 via the SMBus in this mode.
The ALERT and THERM outputs are also active in standby
mode. Changes made to the registers in standby mode that
affect the THERM or ALERT outputs will cause these signals to
be updated.
Bit 5 determines the configuration of Pin 6 on the ADT7461. If
Bit 5 is 0, (default) then Pin 6 is configured as an ALERT output.
If Bit 5 is 1, then Pin 6 is configured as a THERM2 output. Bit 7,
the ALERT mask bit, is only active when Pin 6 is configured as
an ALERT output. If Pin 6 is setup as a THERM2 output, then
Bit 7 has no effect.
Bit 2 sets the temperature measurement range. If Bit 2 is 0
(default value), the temperature measurement range is set
between 0°C to +127°C. Setting Bit 2 to 1 means that the meas-
urement range is set to the extended temperature range.
Rev. 0 | Page 11 of 24
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相關代理商/技術參數 |
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| ADT7461ARZ | 功能描述:板上安裝溫度傳感器 1C TDM EX TMP RGE IC RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| ADT7461ARZ | 制造商:ON Semiconductor 功能描述:TEMPERATURE SENSOR IC |
| ADT7461ARZ-REEL | 功能描述:板上安裝溫度傳感器 1C TDM TMP RNG IC RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| ADT7461ARZ-REEL7 | 功能描述:板上安裝溫度傳感器 1C TDM TMP RNG IC RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| ADT7462 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Flexible Temperature and Voltage Monitor and System Fan Controller |
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