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參數(shù)資料
| 型號： | MAX6648-MAX6692 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 10 AMP MINIATURE POWER RELAY |
| 中文描述： | 精密SMBus兼容，遠(yuǎn)端/本地溫度傳感器與過溫報警 |
| 文件頁數(shù)： | 11/17頁 |
| 文件大?。?/td> | 280K |
| 代理商： | MAX6648-MAX6692 |
M
Precision SMBus-Compatible Remote/Local
Temperature Sensors with Overtemperature Alarms
______________________________________________________________________________________
11
POR and UVLO
To prevent ambiguous power-supply conditions from
corrupting the data in memory and causing erratic
behavior, a POR voltage detector monitors V
CC
and
clears the memory if V
CC
falls below 2.0V (typ). When
power is first applied and V
CC
rises above 2.0V (typ),
the logic blocks begin operating, although reads and
writes at V
CC
levels below 3V are not recommended. A
second V
CC
comparator, the ADC UVLO comparator
prevents the ADC from converting until there is suffi-
cient headroom (V
CC
= 2.8V typ).
Power-Up Defaults
Power-up defaults include:
Interrupt latch is cleared.
ADC begins autoconverting at a 4Hz rate.
Command byte is set to 00h to facilitate quick local
temperature receive byte queries.
Local (internal) T
HIGH
limit set to +85
°
C.
Local (internal) T
LOW
limit set to 0
°
C.
Remote (external) T
HIGH
limit set to +85
°
C.
Remote (external) T
LOW
limit set to 0
°
C.
OVERT
internal limit is set to +85
°
C; every external
limit is set to +110
°
C (MAX6648).
OVERT
limits are set to +85
°
C (MAX6692).
Applications Information
Remote-Diode Selection
The MAX6648/MAX6692 can directly measure the die
temperature of CPUs and other ICs that have on-board
temperature-sensing diodes (see
Typical Operating
Circuit
), or they can measure the temperature of a dis-
crete diode-connected transistor.
BIT
NAME
POR
STATE
FUNCTION
7 (MSB)
BUSY
0
A/D is busy converting when 1.
6
LHIGH
0
Local (internal) high-temperature alarm has tripped when 1; cleared by POR or readout of the
status byte if the fault condition no longer exists.
5
LLOW
0
Local (internal) low-temperature alarm has tripped when 1; cleared by POR or readout of the
status byte if the fault condition no longer exists.
4
RHIGH
0
Remote (external) high-temperature alarm has tripped when 1; cleared by POR or readout of the
status byte if the fault condition no longer exists.
3
RLOW
0
Remote (external) low-temperature alarm has tripped when 1; cleared by POR or readout of the
status byte if the fault condition no longer exists.
2
FAULT
0
A 1 indicates DXN and DXP are either shorted or open; cleared by POR or readout of the status
byte if the fault condition no longer exists.
1
0
EOT
IOT
0
0
A 1 indicates the remote (external) junction temperature exceeds the external
OVERT
threshold.
A 1 indicates the local (internal) junction temperature exceeds the internal
OVERT
threshold.
Table 7. Status Register Bit Assignments (02h)
DATA
CONVERSION
RATE (Hz)
00h
01h
02h
03h
04h
05h
06h
07h
0.0625
0.125
0.25
0.5
1
2
4
4
Reserved
08h-FFh
Table 8. Conversion-Rate Control Byte
(04h)
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| MAX6692 | Precision SMBus-Compatible Remote/Local Temperature Sensors with Overtemperature Alarms |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6648MUA | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| MAX6648MUA+ | 功能描述:板上安裝溫度傳感器 145C SMBus-Comp Remote/Local Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| MAX6648MUA+T | 功能描述:板上安裝溫度傳感器 145C SMBus-Comp Remote/Local Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| MAX6648MUA-T | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| MAX6648YMUA+ | 功能描述:板上安裝溫度傳感器 145C SMBus-Comp Remote/Local Sensor RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)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(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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