- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄165349 > ADM1033ARQ-REEL (ON SEMICONDUCTOR) DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT PDF資料下載
參數(shù)資料
| 型號： | ADM1033ARQ-REEL |
| 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), 2Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | MO-137AB, QSOP-16 |
| 文件頁數(shù)： | 9/39頁 |
| 文件大小： | 819K |
| 代理商： | ADM1033ARQ-REEL |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁當(dāng)前第9頁第10頁第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
ADM1033
Rev. 0 | Page 17 of 40
D+
D–
REMOTE
SENSING
TRANSISTOR
I
N1 I
N2 I
IBIAS
VDD
VOUT+
TO ADC
VOUT–
LOW-PASS FILTER
fC = 65kHz
04
93
7-
0-
02
7
Figure 28. ADM1033 Signal Conditioning
The ADM1033 operates at three different currents to measure
the change in VBE.
Figure 28 shows the input signal conditioning used to measure
the output of an external temperature sensor. It also shows the
external sensor as a substrate transistor, provided for
temperature monitoring on some microprocessors. The external
sensor works equally well as a discrete transistor.
If a discrete transistor is used, the collector is not grounded and
should be linked to the base. If a PNP transistor is used, the base
is connected to the D input and the emitter to the D+ input. If
an NPN transistor is used, the emitter is connected to the D
input and the base to the D+ input.
If the sensor is used in a very noisy environment, a capacitor
value of up to 1000 pF can be placed between the D+ and D
inputs to filter the noise. However, additional parasitic capaci-
tance on the lines between D+, D, and the thermal diode
should also be considered. The total capacitance should never
be greater than 1000 pF.
To measure each VBE, the sensor is switched between operat-
ing currents of I, (N1 × I), and (N2 × I). The resulting waveform
is passed through a 65 kHz low-pass filter to remove noise, then
to a chopper-stabilized amplifier that amplifies and rectifies the
waveform. This produces a dc voltage proportional to VBE.
These measurements are used to determine the temperature of
the thermal diode, while automatically compensating for any
series resistance on the D+ and/or D lines. The temperature is
stored in two registers as a 13-bit word.
To further reduce the effects of noise, digital filtering is per-
formed by averaging the results of 16 measurement cycles at
conversion rates of less than 16 Hz. An external temperature
measurement takes nominally 32 ms when averaging is enabled
and 6 ms when averaging is disabled.
One LSB of the ADC corresponds to 0.03125°C. The ADM1033
can theoretically measure temperatures from 64°C to
+191.96875°C, although 64°C and +191°C are outside its
operating range. The extended temperature resolution data
format is shown in Table 8. The extended temperature
resolution for the local and remote channels is stored in the
extended temperature resolution registers (Reg. 0x40 = Local,
Reg. 0x42 = Remote).
Table 9. Temperature Measurement Registers
Register
Description
Default
0x40
Local Temperature, LSBs
0x00
0x41
Local Temperature, MSBs
0x00
0x42
Remote Temperature, LSBs
0x00
0x43
Remote Temperature, MSBs
0x00
High and low temperature limit registers are associated with
each temperature measurement channel. The appropriate status
bit is set when the high and low limits are exceeded. Exceeding
either limit can cause an SMBALERT interrupt.
Table 10. Temperature Measurement Limit Registers
Register
Description
Default
0x0B
Local High Limit
0x8B (75°C)
0x0C
Local Low Limit
0x54 (20°C)
0x0D
Local THERM Limit
0x95 (85°C)
0x0E
Remote High Limit
0x8B (75°C)
0x0F
Remote Low Limit
0x54 (20°C)
0x10
Remote THERM Limit
0x95 (85°C)
Rev. 1 | Page 17 of 39 | www.onsemi.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADM1069AST | 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP32 |
| ADM231LAN | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| ADM231LAQ | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| ADM231LAR | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
| ADM232A | 5V High-Speed RS-232 Transceivers with 0.1uF Capacitors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADM1033ARQ-REEL7 | 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:否 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: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 |
| ADM1033ARQZ | 功能描述:馬達(dá)/運動/點火控制器和驅(qū)動器 +/- 1 C Digital 2-Wire RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| ADM1033ARQZ-REEL | 功能描述:板上安裝溫度傳感器 +/- 1 C Digital 2-Wire 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 |
| ADM1033ARQZ-REEL7 | 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP 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: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 |
| ADM1033ARQZ-RL7 | 功能描述:IC THERM/FAN SPEED CTLR 16-QSOP 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: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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。