- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄165354 > ADT7462ACPZ-500RL7 (ON SEMICONDUCTOR) DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 4Cel, SQUARE, SURFACE MOUNT PDF資料下載
參數(shù)資料
| 型號(hào)： | ADT7462ACPZ-500RL7 |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 4Cel, SQUARE, SURFACE MOUNT |
| 封裝： | 5 X 5 MM, LFCSP-32 |
| 文件頁數(shù)： | 16/88頁 |
| 文件大?。?/td> | 836K |
| 代理商： | ADT7462ACPZ-500RL7 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁當(dāng)前第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁
ADT7462
Rev. 2 | Page 23 of 88 | www.onsemi.com
C1*
D+
BIAS
DIODE
*CAPACITOR C1 IS OPTIONAL. IT SHOULD ONLY BE USED IN NOISY ENVIRONMENTS.
VCC
TO ADC
VOUT+
VOUT–
REMOTE
SENSING
TRANSISTOR
D–
I
N1 × I
N2 × I
IBIAS
LOW-PASS FILTER
fC = 65kHz
05
569
-0
24
Figure 34. Input Signal Conditioning
The temperature value is stored in two registers. The MSB has a
resolution of 1°C. Only two bits in the temperature LSB register
are used, Bit 7 and Bit 6, giving a temperature measurement
resolution of 0.25°C. The temperature measurement range for
both local and remote measurements is from 64°C to +191°C.
However, the ADT7462 itself should never be operated outside
its operating temperature range, which is from 40°C to +125°C.
For the remote diode, the user should refer to the data sheet of
the diode.
Table 13. Temperature Data Format
Temperature Value
MSB
LSB
64°C
0000 0000
50.25°C
0000 1110
0100 0000
25°C
0010 0111
0000 0000
0°C
0100 0000
0000 0000
+25°C
0101 1001
0000 0000
+50.25°C
0111 0010
0100 0000
+100°C
1010 0100
0000 0000
When reading the full temperature value, the LSB should be
read first and then the MSB. Reading the LSBs causes the
current MSBs to be frozen until they are read. Reading the
MSBs only does not cause any register to be locked. This is
useful when a temperature reading with 1°C resolution is
required.
SERIES RESISTANCE CANCELLATION
Parasitic resistance in series with the remote diode D+ and D
inputs can be caused by a variety of factors, including PCB track
resistance and track length. This series resistance appears as a
temperature offset in the remote sensor’s temperature measure-
ment. This error typically causes a 0.8°C offset per ohm of
parasitic resistance in series with the remote diode.
The ADT7462 automatically cancels out the effect of this series
resistance on the temperature reading, giving a more accurate
result, without the need for user characterization of this
resistance. The ADT7462 is designed to automatically cancel
typically up to 2 kΩ of resistance. By using an advanced
temperature measurement method, the process is transparent to
the user. This feature also allows an RCR filter to be added to
the sensor path, allowing the part to be used accurately in noisy
environments.
Temperature Limits
Each temperature measurement channel has a high and low
temperature limit associated with it. The temperature measure-
ments are compared with these limits, and the results of these
comparisons are stored in status registers. A Logic 0 indicates
an in-limit comparison, and a Logic 1 indicates an out-of-limit
comparison. The ADT7462 can generate an ALERT, if configured
to do so, after a status bit is set. For more information on the
status registers and ALERT, see the Status and Mask Registers
and ALERT section.
Each temperature channel also has a THERM1 and a THERM2
temperature limit associated with it. When these temperature
limits are exceeded, the corresponding THERM pin is asserted
low (if THERM is configured as an output), and the fans are
boosted to full speed (if the boost bit is set). Table 14 shows a
complete list of all the temperature limits and their default values.
Table 14. Temperature Limit Registers
Temperature Value
Register
Address
Default
Local Low Temperature Limit
0x44
0x40
Remote 1 Low Temperature Limit
0x45
0x40
Remote 2 Low Temperature Limit
0x46
0x40
Remote 3 Low Temperature Limit
0x47
0x40
Local High Temperature Limit
0x48
0x95
Remote 1 High Temperature Limit
0x49
0x95
Remote 2 High Temperature Limit
0x4A
0x95
Remote 3 High Temperature Limit
0x4B
0x95
Local THERM1 Temperature Limit
0x4C
0xA4
Remote 1 THERM1 Temperature Limit
0x4D
0xA4
Remote 2 THERM1 Temperature Limit
0x4E
0xA4
Remote 3 THERM1 Temperature Limit
0x4F
0xA4
Local THERM2 Temperature Limit
0x50
0xA4
Remote 1 THERM2 Temperature Limit
0x51
0xA4
Remote 2 THERM2 Temperature Limit
0x52
0xA4
Remote 3 THERM2 Temperature Limit
0x53
0xA4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADTSM66SV | KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 3.92 N, SURFACE MOUNT-STRAIGHT |
| ADTS644N/KV | KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 1.57 N, THROUGH HOLE-STRAIGHT |
| ADTSM648N/KV | KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 1.57 N, SURFACE MOUNT-STRAIGHT |
| ADTS62KVB | KEYPAD SWITCH, SPST, MOMENTARY-TACTILE, 0.05A, 12VDC, 1.47 N, THROUGH HOLE-STRAIGHT |
| ADUC7022BCP | 32-BIT, FLASH, 45.5 MHz, RISC MICROCONTROLLER, QCC40 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADT7462ACPZ-5RL7 | 功能描述:監(jiān)控電路 FLX H/WRE MON IC SRV RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ADT7462ACPZ-R7 | 功能描述:監(jiān)控電路 FLX H/WRE MON IC SRV RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ADT7462ACPZ-REEL | 功能描述:監(jiān)控電路 FLX H/WRE MON IC SRV RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| ADT7462ACPZ-REEL7 | 功能描述:IC TEMP/VOLT MONITOR 32-LFCSP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 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，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報(bào):無 輸出風(fēng)扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| ADT7462EBZEVB | 功能描述:EVALUATION BOARD ADT7462 制造商:on semiconductor 系列:* 零件狀態(tài):在售 標(biāo)準(zhǔn)包裝:1 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。