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參數(shù)資料
| 型號： | MAX1619MEE+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 11/20頁 |
| 文件大?。?/td> | 303K |
| 描述： | IC TEMP SENSOR W/ALARM 16-QSOP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS |
| 標準包裝： | 100 |
| 功能： | 溫度計，恒溫計 |
| 傳感器類型： | 內部和外部 |
| 感應溫度： | -55°C ~ 125°C |
| 精確度： | ±3.5°C 本地（最大），±5°C 遠程（最大） |
| 拓撲： | ADC，比較器，多路復用器，寄存器庫 |
| 輸出類型： | 2 線串行，I²C?/SMBUS? |
| 輸出警報： | 是 |
| 輸出風扇： | 是 |
| 電源電壓： | 3 V ~ 5.5 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-QSOP |
| 包裝： | 管件 |
tems, since a second master could overwrite the com-
mand byte without informing the first master.
The temperature data format is 7 bits plus sign in twos
complement form for each channel, with each data bit rep-
resenting 1癈 (Table 2), transmitted MSB first. Measure-
ments are offset by +1/2癈 to minimize internal rounding
errors; for example, +99.6癈 is reported as +100癈.
Alarm Threshold Registers
Two registers store ALERT threshold limits, with high-
temperature (T
HIGH
) and low-temperature (T
LOW
) reg-
isters for the remote A/D channel. There are no
comparison registers for the local A/D channel. If either
measured temperature equals or exceeds the corre-
sponding alarm threshold value, an ALERT interrupt is
asserted. The power-on-reset (POR) state of the T
HIGH
register is full scale (0111 1111, or +127癈). The POR
state of the T
LOW
register is 1100 1001 or -55癈.
Two additional alarm threshold registers control the
OVERT output (see OVERT Alarm Output section), T
MAX
and T
HYST
. The POR state of T
MAX
is +100癈, and
T
HYST
is +95癈.
OOVVEERRTT Alarm Output for Fan Control
The OVERT output is an unlatched open-drain output that
behaves as a thermostat to control a fan (Figure 4). When
using the SMBus interface, the polarity of the OVERT pin
(active-low at POR) can be inverted via bit 5 in the config-
uration byte. OVERTs current state can be read in the
status byte.
OVERT can also be used to control a fan without system
intervention. OVERT goes low when the remote tempera-
ture rises above T
MAX
and wont go high again until the
temperature drops below T
HYST
. The power-up default
settings for T
MAX
and T
HYST
(+100癈 and +95癈,
respectively) allow the MAX1619 to be used in stand-
alone thermostat applications where connection to an
SMBus serial bus isnt required.
Diode Fault Alarm
There is a continuity fault detector at DXP that detects
whether the remote diode has an open-circuit condi-
tion. At the beginning of each conversion, the diode
fault is checked, and the status byte is updated. This
fault detector is a simple voltage detector; if DXP rises
above V
CC
- 1V (typical) due to the diode current
source, a fault is detected. Note that the diode fault
isnt checked until a conversion is initiated, so immedi-
ately after power-on reset the status byte indicates no
fault is present, even if the diode path is broken.
Remote/Local Temperature Sensor with Dual-
Alarm Outputs and SMBus Serial Interface
______________________________________________________________________________________ 11
DIGITAL OUTPUT
DATA BITS
0
111
1111
+127
+127.00
0
111
1111
0
111
1110
+126
+126.00
+127
+126.50
0
001
1001
0
000
0001
+1
+0.50
0
000
0000
0
000
0000
0
0.00
ROUNDED
TEMP.
(癈)
TEMP.
(癈)
0
+0.25
+25
+25.25
0
000
0000
0
000
0000
0
-0.50
1
111
1111
1
111
1111
-1
-1.00
-1
-0.75
1
110
0111
1
110
0111
-25
-25.50
1
100
1001
1
100
1001
-55
-55.00
0
-0.25
-55
-54.75
-25
-25.00
1
011
1111
1
011
1111
-65
-70.00
-65
-65.00
Table 2. Data Format (Twos Complement)
SIGN
MSB
LSB
0
111
1111
+127
+130.00
MAX1619
SMBCLK
ADD0
ADD1
STBY V
CC
PGND
+12V
GND
DXP
DXN
+3V TO +5.5V
SMBUS
SERIAL
INTERFACE
(TO HOST)
2N3904
SMBDATA
ALERT
OVERT
Figure 4. Fan Control Application
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| MAX1619MEE+ | 功能描述:板上安裝溫度傳感器 Remote/Local Temp Sensor w Dual Alarm 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| MAX1619MEE+T | 功能描述:板上安裝溫度傳感器 Remote/Local Temp Sensor w Dual Alarm 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| MAX1619MEE-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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| MAX161AC/D | 功能描述:數(shù)據(jù)轉換系統(tǒng) RoHS:否 制造商:Texas Instruments 轉換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX161ACPI | 功能描述:數(shù)據(jù)轉換系統(tǒng) RoHS:否 制造商:Texas Instruments 轉換速率:0.001 MSPs 分辨率:24 bit 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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