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參數資料
型號： MAX6693UP9A+T
廠商： Maxim Integrated
文件頁數： 14/19頁
文件大小： 168K
描述： IC TEMP MONITOR 7CH 20-TSSOP
產品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 2,500
功能： 溫度監(jiān)控系統(tǒng)（傳感器）
傳感器類型： 內部和外部
感應溫度： -40°C ~ 125°C，外部傳感器
精確度： ±3°C 本地（最大），±4°C 遠程（最大）
拓撲： ADC，緩沖器，多路復用器，寄存器庫
輸出類型： SMBus?
輸出警報： 是
輸出風扇： 是
電源電壓： 3 V ~ 3.6 V
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 20-TSSOP（0.173"，4.40mm 寬）
供應商設備封裝： 20-TSSOP
包裝： 帶卷 (TR)
7-Channel Precision Temperature Monitor
with Beta Compensation
14   ______________________________________________________________________________________
where temperature is measured in Kelvin and
n
NOMIMAL
for channel 1 of the MAX6693 is 1.009. As
an example, assume you want to use the MAX6693 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 +84.41癈 (357.56K), an error of
-0.590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 MAX6693 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
channel 1. The series resistance cancellation function
increases the conversion time for channel 1 by 125ms.
This feature cancels the bulk resistance of the sensor
and any other resistance in series (wire, contact resis-
tance, etc.). The cancellation range is from 0?to 100?
Beta Compensation
The MAX6693 is optimized for use with a substrate PNP
remote-sensing transistor on the die of the target IC.
DXP1 connects to the emitter of the sensing transistor
and DXN1 connects to the base. The collector is
grounded. Such transistors can have very low beta
(less than 1) when built in processes with 65nm and
smaller geometries. Because of the very low beta, stan-
dard remote diode temperature sensors may exhibit
large errors when used with these transistors. Channel
1 of the MAX6693 incorporates a beta compensation
function that, when enabled, eliminates the effect of low
beta values. This function is enabled at power-up using
bit 2 of the configuration 1 register. Whenever low beta
compensation is enabled, series-resistance cancella-
tion must be enabled.
Discrete Remote Diodes
When the remote-sensing diode is a discrete transistor,
its collector and base must be connected together.
Table 10 lists examples of discrete transistors that are
appropriate for use with the MAX6693. The transistor
must be a small-signal type with a relatively high for-
ward voltage; otherwise, the A/D input voltage range
can be violated. The forward voltage at the highest
expected temperature must be greater than 0.25V at
10礎, and at the lowest expected temperature, the for-
ward voltage must be less than 0.95V at 100礎. Large
power transistors must not be used. Also, ensure that
the base resistance is less than 100? Tight specifica-
tions for forward current gain (50 < ?< 150, for exam-
ple) indicate that the manufacturer has good process
controls and that the devices have consistent V
BE
char-
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
1 009
1 002
1 00699
.
.
( .
)
T   T
n
n
M
ACTUAL
NOMINAL
=
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
1
Table 6. Configuration 3 Register
BIT
NAME
POR
STATE
FUNCTION
7 (MSB)
Reserved
0

6
Reserved
0

5
Mask OVERT 6
0
Channel 6 Remote-Diode OVERT Mask Bit. Set to logic 1 to mask channel 6
OVERT.
4
Mask OVERT 5
0
Channel 5 Remote-Diode OVERT Mask Bit. Set to logic 1 to mask channel 5
OVERT.
3
Mask OVERT 4
0
Channel 4 Remote-Diode OVERT Mask Bit. Set to logic 1 to mask channel 4
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.
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PDF描述
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相關代理商/技術參數
參數描述
MAX6694TE9A+ 功能描述:板上安裝溫度傳感器 5Ch Precision Temperature Monitor 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
MAX6694TE9A+T 功能描述:板上安裝溫度傳感器 5Ch Precision Temperature Monitor 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
MAX6694UE9A+ 功能描述:板上安裝溫度傳感器 5Ch Precision Temperature Monitor 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
MAX6694UE9A+T 功能描述:板上安裝溫度傳感器 5Ch Precision Temperature Monitor 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
MAX6695AUB 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
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