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| 型号： | ADT7461ARMZ-2REEL |
| 厂商： | ON Semiconductor |
| 文件页数： | 11/20页 |
| 文件大小： | 268K |
| 描述： | IC SENSOR TEMP DGTL 2CH 8MSOP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi |
| 标准包装： | 3,000 |
| 功能： | 温度监控系统（传感器） |
| 传感器类型： | 内部和外部 |
| 感应温度： | 0°C ~ 127°C，-55°C ~ 150°C |
| 精确度： | ±3°C |
| 拓扑： | ADC，比较器，多路复用器，寄存器库 |
| 输出类型： | 2 线 SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 120°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： | Micro8? |
| 包装： | 带卷 (TR) |
ADT7461
http://onsemi.com
11
When Pin 6 is configured as THERM2
, only the high
temperature limits are relevant. If Flag 6 and/or Flag 4 are
set, the THERM2
output goes low to indicate the
temperature measurements are outside the programmed
limits. Flag 5 and Flag 3 have no effect on THERM2
. The
behavior of THERM2
is otherwise the same as THERM
.
Table 10. STATUS REGISTER BIT ASSIGNMENTS
Bit
Name
Function
7
BUSY
(Note 1)
1 when ADC is converting
6
LHIGH
(Note 2)
1 when local high temperature limit is
tripped
5
LLOW
(Note 2)
1 when local low temperature limit is
tripped
4
RHIGH
(Note 2)
1 when remote high temperature limit is
tripped
3
RLOW
(Note 2)
1 when remote low temperature limit is
tripped
2
OPEN
(Note 2)
1 when remote sensor is an open circuit
1
RTHRM
1 when remote THERM
limit is tripped
0
LTHRM
1 when local THERM
limit is tripped
1. Polling of the BUSY bit is not recommended.
2. These flags stay high until the status register is read or they are
reset by POR.
Offset Register
Offset errors may be introduced into the remote
temperature measurement by clock noise or by the thermal
diode being located away from the hot spot. To achieve the
specified accuracy on this channel, these offsets must be
removed.
The offset value is stored as a 10-bit, twos complement
value in Registers 0x11 (high byte) and 0x12 (low byte, left
justified). Only the upper 2 bits of Register 0x12 are used.
The MSB of Register 0x11 is the sign bit. The minimum
offset that can be programmed is 128癈, and the maximum
is +127.75癈. The value in the offset register is added to the
measured value of the remote temperature.
The offset register powers up with a default value of 0癈
and has no effect unless the user writes a different value to it.
Table 11. SAMPLE OFFSET REGISTER CODES
Offset Value
0x11
0x12
128癈
1000 0000
00 00 0000
4癈
1111 1100
00 00 0000
1癈
1111 1111
00 000000
0.25癈
1111 1111
11 00 0000
0癈
0000 0000
00 00 0000
+0.25癈
0000 0000
01 00 0000
+1癈
0000 0001
00 00 0000
+4癈
0000 0100
00 00 0000
+127.75癈
0111 1111
11 00 0000
One-Shot Register
The one-shot register is used to initiate a conversion and
comparison cycle when the ADT7461 is in standby mode,
after which the device returns to standby. Writing to the
one-shot register address (0x0F) causes the ADT7461 to
perform a conversion and comparison on both the internal
and the external temperature channels. This is not a data
register as such; the write operation to Address 0x0F causes
the one-shot conversion. The data written to this address is
irrelevant and is not stored.
Consecutive ALERT
Register
The value written to this register determines how many
out-of-limit measurements must occur before an ALERT
is
generated. The default value is that one out-of-limit
measurement generates an ALERT
. The maximum value that
can be chosen is 4. The purpose of this register is to allow the
user to perform some filtering of the output. This is
particularly useful at the fastest three conversion rates, where
no averaging takes place. This register is at Address 0x22.
Table 12. CONSECUTIVE ALERT
REGISTER CODES
Register Value
Number of Out-of-Limit
Measurements Required
yxxx 000x
1
yxxx 001x
2
yxxx 011x
3
yxxx 111x
4
NOTE: x = dont care bits, and y = SMBus timeout bit.
Default = 0. See SMBus section for more information.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADT7461ARMZ-2REEL7 | 功能描述:IC SENSOR TEMP DGTL 2CH 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6 |
| ADT7461ARMZ-2RL7 | 功能描述:板上安装温度传感器 EXT TMP RGE IC 1C TDM SRC 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 |
| ADT7461ARMZ-R2 | 制造商:ON Semiconductor 功能描述:ADT7461ARMZ-2REEL |
| ADT7461ARMZ-R7 | 功能描述:板上安装温度传感器 EXT TMP RGE IC 1C TDM SRC 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 |
| ADT7461ARMZ-REEL | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:?±1a?? Temperature Monitor with Series Resistance Cancellation |
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