- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄67358 > ADT7473ARQZ-1REEL7 (ANALOG DEVICES INC) DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 2.50Cel, RECTANGULAR, SURFACE MOUNT PDF資料下載
參數(shù)資料
| 型號： | ADT7473ARQZ-1REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 2.50Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | ROHS COMPLIANT, MO-137AB, QSOP-16 |
| 文件頁數(shù)： | 11/72頁 |
| 文件大?。?/td> | 1494K |
| 代理商： | ADT7473ARQZ-1REEL7 |
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頁當前第11頁第12頁第13頁第14頁第15頁第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
ADT7473/ADT7473-1
Rev. C | Page 19 of 72
Reading Temperature from the ADT7473/ADT7473-1
It is important to note that the temperature can be read from
the ADT7473/ADT7473-1 as an 8-bit value (with 1°C
resolution) or as a 10-bit value (with 0.25°C resolution). If only
1°C resolution is required, the temperature readings can be read
back at any time and in no particular order.
If the 10-bit measurement is required, a 2-register read for each
measurement is used. The extended resolution register (Register
0x77) should be read first. This causes all temperature reading
registers to be frozen until all temperature reading registers
have been read from. This prevents an MSB reading from being
updated while its two LSBs are being read, and vice versa.
ADDITIONAL ADC FUNCTIONS FOR
TEMPERATURE MEASUREMENT
A number of other functions are available on the ADT7473/
ADT7473-1 to offer the system designer increased flexibility.
Turn-Off Averaging
For each temperature measurement read from a value register,
16 readings have actually been made internally and the results
averaged before being placed into the value register. Sometimes
it is necessary to take a very fast measurement. Setting Bit 4 of
Configuration Register 2 (0x73) turns averaging off.
Table 12. Conversion Time with Averaging Disabled
Channel
Measurement Time
Voltage Channel
0.7 ms
Remote 1 Temperature
7 ms
Remote 2 Temperature
7 ms
Local Temperature
1.3 ms
Table 13. Conversion Time with Averaging Enabled
Channel
Measurement Time
Voltage Channels
11 ms
Remote Temperature
39 ms
Local Temperature
12 ms
Single-Channel ADC Conversions
Setting Bit 6 of Configuration Register 2 (0x73) places the
ADT7473/ADT7473-1 into single-channel ADC conversion
mode. In this mode, the ADT7473/ADT7473-1 can be made to
read a single temperature channel only. The appropriate ADC
channel is selected by writing to Bits [7:5] of the TACH1
minimum high byte register (0x55).
Table 14. Programming Single-Channel ADC Mode for
Temperatures
Bits [7:5] Register 0x55
Channel Selected
101
Remote 1 temperature
110
Local temperature
111
Remote 2 temperature
Configuration Register 2 (0x73)
Bit 4 = 1, averaging off.
Bit 6 = 1, single-channel convert mode.
TACH1 Minimum High Byte Register (0x55)
Bits [7:5] select the ADC channel for single-channel convert mode.
Overtemperature Events
Overtemperature events on any of the temperature channels can
be detected and dealt with automatically in automatic fan speed
control mode. Register 0x6A to Register 0x6C are the THERM
limits. When a temperature exceeds its THERM limit, all PWM
outputs run at 100% duty cycle or the maximum PWM duty
cycle (Register 0x38, Register 0x39, and Register 0x3A) if Bit 3
of Configuration Register 4 (0x7D) is set. The fans remain
running at this speed until the temperature drops below
THERM minus hysteresis; this can be disabled by setting the
boost bit in Configuration Register 3 (0x78), Bit 2. The
hysteresis value for that THERM limit is the value programmed
into the hysteresis registers (Register 0x6D and Register 0x6E).
The default hysteresis value is 4°C.
FANS
TEMPERATURE
100%
HYSTERESIS (°C)
THERM LIMIT
0
468
6-
027
Figure 30. THERM Limit Operation
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADT7473ARQZ-1REEL | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 2.50Cel, RECTANGULAR, SURFACE MOUNT |
| ADT7476ARQZ-REEL7 | DIGITAL TEMP SENSOR-SERIAL, 10BIT(s), 2.50Cel, RECTANGULAR, SURFACE MOUNT |
| ADT7482ARMZ-RL | DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 2.5Cel, SQUARE, SURFACE MOUNT |
| ADT7482ARMZ-U2 | DIGITAL TEMP SENSOR-SERIAL, 11BIT(s), 2.5Cel, SQUARE, SURFACE MOUNT |
| ADT7485ARMZ-REEL | DIGITAL TEMP SENSOR-SERIAL, 16BIT(s), 1Cel, SQUARE, SURFACE MOUNT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADT7473ARQZ-1RL | 功能描述:板上安裝溫度傳感器 FAN CNTRLR/INT MON 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(guān)閉: 安裝風格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| ADT7473ARQZ-REEL | 功能描述:板上安裝溫度傳感器 FAN CNTRLR/INT MON 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(guān)閉: 安裝風格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| ADT7473ARQZ-REEL7 | 功能描述:IC REMOTE THERMAL CTRLR 16QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:dBCool® 標準包裝: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 遠程（最大值） 拓撲:ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風扇: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 |
| ADT7473ARQZ-RL7 | 功能描述:板上安裝溫度傳感器 FAN CNTRLR/INT MON 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(guān)閉: 安裝風格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| ADT7473EBZEVB | 功能描述:EVALUATION BOARD ADT7473 制造商:on semiconductor 系列:* 零件狀態(tài):在售 標準包裝:1 |
發(fā)布緊急采購，3分鐘左右您將得到回復。