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參數(shù)資料
| 型號： | MAX6698UE99+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 13/24頁 |
| 文件大?。?/td> | 321K |
| 描述： | IC TEMP MONITOR 7CH 16-TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 96 |
| 功能： | 溫度監(jiān)控系統(tǒng)（傳感器） |
| 傳感器類型： | 內(nèi)部和外部 |
| 感應(yīng)溫度： | -40°C ~ 125°C |
| 精確度： | ±3.5°C 本地（最大），±3°C 遠程（最大） |
| 拓?fù)洌?/td> | ADC，緩沖器，多路復(fù)用器，寄存器庫 |
| 輸出類型： | 2 線串行，I²C?/SMBUS? |
| 輸出警報： | 是 |
| 輸出風(fēng)扇： | 是 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-TSSOP |
| 包裝： | 管件 |
either the measured value must drop below the thresh-
old minus the hysteresis value (4癈 or 4 LSBs), or the
trip threshold must be set at least 4癈 (or 4 LSBs) above
the current value.
Applications Information
Remote-Diode Selection
The MAX6698 directly measures the die temperature of
CPUs and other ICs that have on-chip temperature-
sensing diodes (see the Typical Application Circuit) or
it can measure the temperature of a discrete diode-
connected transistor.
Effect of Ideality Factor
The accuracy of the remote temperature measurements
depends on the ideality factor (n) of the remote diode
(actually a transistor). The MAX6698 is optimized for n
= 1.008. A thermal diode on the substrate of an IC is
normally a pnp with the base and emitter brought out
the collector (diode connection) grounded. DXP_ must
be connected to the anode (emitter) and DXN_ must be
connected to the cathode (base) of this pnp. If a sense
transistor with an ideality factor other than 1.008 is
used, the output data is different from the data
obtained with the optimum ideality factor. Fortunately,
the difference is predictable. Assume a remote-diode
sensor designed for a nominal ideality factor n
NOMINAL
is used to measure the temperature of a diode with a
different ideality factor n1. The measured temperature
T
M
can be corrected using:
where temperature is measured in Kelvin and
n
NOMIMAL
for the MAX6698 is 1.008. As an example,
assume you want to use the MAX6698 with a CPU that
has an ideality factor of 1.002. If the diode has no
series resistance, the measured data is related to the
real temperature as follows:
For a real temperature of +85癈 (358.15K), the mea-
sured temperature is +82.87癈 (356.02K), an error of
-2.13癈.
Series Resistance Cancellation
Some thermal diodes on high-power ICs can have
excessive series resistance, which can cause tempera-
ture measurement errors with conventional remote tem-
perature sensors. Channel 1 of the MAX6698 has a
series resistance cancellation feature (enabled by bit 3
of the configuration 1 register) that eliminates the effect
of diode series resistance. Set bit 3 to 1 if the series
resistance is large enough to affect the accuracy of
T
T
n
n
T
T
ACTUAL M
NOMINAL
M
M
=
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
=
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
=
1
1 008
1 002
1 00599
.
.
( .
)
T T
n
n
M
ACTUAL
NOMINAL
=
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
1
______________________________________________________________________________________ 13
7-Channel Precision Remote-Diode, Thermistor,
and Local Temperature Monitor
BIT
NAME
POR
STATE
FUNCTION
7(MSB)
Reserved
0
6
Reserved
0
5
Mask Thermistor 3
OVERT
0
Thermistor 3 OVERT Mask Bit. Set to logic 1 to mask thermistor 3 OVERT.
4
Mask Thermistor 2
OVERT
0
Thermistor 2 OVERT Mask Bit. Set to logic 1 to mask thermistor 2 OVERT.
3
Mask Thermistor 1
OVERT
0
Thermistor 1 OVERT Mask Bit. Set to logic 1 to mask thermistor 1 OVERT.
2
Reserved
0
1
Reserved
0
0
Mask OVERT 1
0
Channel 1 Remote-Diode OVERT Mask Bit. Set to logic 1 to mask channel 1
OVERT.
Table 7. Configuration 3 Register
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6698UE99+ | 功能描述:板上安裝溫度傳感器 7Ch Precision Remote Diode Thermistor 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 |
| MAX6698UE99+T | 功能描述:板上安裝溫度傳感器 7Ch Precision Remote Diode Thermistor 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 |
| MAX6698UE99-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 |
| MAX6698UE9C | 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 |
| MAX6698UE9C+ | 功能描述:板上安裝溫度傳感器 7Ch Precision Remote Diode Thermistor 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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