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參數資料
型號: ADT7460
廠商: Analog Devices, Inc.
英文描述: dB COOL?? Remote Thermal Controller and Fan Controller
中文描述: 分貝很酷吧??遠程熱控制器和風扇控制器
文件頁數: 12/48頁
文件大小: 695K
代理商: ADT7460
REV. 0
–12–
ADT7460
VOLTAGE MEASUREMENT INPUT
The ADT7460 has one external voltage measurement channel.
It can also measure its own supply voltage, V
CC
.
Pin 14 may be configured to measure a 2.5 V supply. The V
CC
supply voltage measurement is carried out through the V
CC
pin
(Pin 3). Setting Bit 7 of Configuration Register 1 (Reg. 0x40)
allows a 5 V supply to power the ADT7460 and be measured
without overranging the V
CC
measurement channel. The 2.5 V
input can be used to monitor a chipset supply voltage in
computer systems.
ANALOG-TO-DIGITAL CONVERTER
All analog inputs are multiplexed into the on-chip, successive
approximation, analog-to-digital converter. This has a resolu-
tion of 10 bits. The basic input range is 0 V to 2.25 V but the
input has built-in attenuators to allow measurement of 2.5 V
without any external components. To allow for the tolerance of
the supply voltage, the ADC produces an output of 3/4 full scale
(decimal 768 or 300 hex) for the nominal input voltage and so
has adequate headroom to deal with overvoltages.
INPUT CIRCUITRY
The internal structure for the 2.5 V analog input is shown in
Figure 13. The input circuit consists of an input protection diode,
an attenuator, plus a capacitor to form a first-order low-pass
filter that gives the input immunity to high frequency noise.
VOLTAGE MEASUREMENT REGISTERS
Reg. 0x20
2.5 V Reading
= 0x00 default
2.5 V LIMIT REGISTERS
Associated with the 2.5 V measurement channel is a high and
low limit register. Exceeding the programmed high or low limit
causes the appropriate Status bit to be set. Exceeding either
limit can also generate
SMBALERT
interrupts.
Reg. 0x44
2.5 V Low Limit
= 0x00 default
Reg. 0x45
2.5 V High Limit
= 0xFF default
30pF
45k
94k
2.5V
IN
Figure 13. Structure of Analog Inputs
Table II shows the input ranges of the analog inputs and output
codes of the 10-bit ADC.
When the ADC is running, it samples and converts a voltage
input in 711
μ
s and averages 16 conversions to reduce noise; a
measurement takes nominally 11.38 ms.
相關PDF資料
PDF描述
ADT7460ARQ dB COOL?? Remote Thermal Controller and Fan Controller
ADT7461 【1∑C Temperature Monitor with Series Resistance Cancellation
ADT7461AR 【1∑C Temperature Monitor with Series Resistance Cancellation
ADT7461AR-REEL 【1∑C Temperature Monitor with Series Resistance Cancellation
ADT7461AR-REEL7 【1∑C Temperature Monitor with Series Resistance Cancellation
相關代理商/技術參數
參數描述
ADT7460ARQ 功能描述:IC REMOTE THRML/FAN CTRLR 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:dBCool® 標準包裝:1 系列:- 功能:溫度監控系統(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:±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 供應商設備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
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ADT7460ARQ-REEL7 功能描述:IC SENSOR TEMP FAN-CTRL 16QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:dBCool® 標準包裝:1 系列:- 功能:溫度監控系統(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:±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 供應商設備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADT7460ARQZ 功能描述:馬達/運動/點火控制器和驅動器 THERMAL MGMT CNTRLR IC RoHS:否 制造商:STMicroelectronics 產品: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 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
ADT7460ARQZ-R7 制造商:ON Semiconductor 功能描述:Temp Sensor Digital Serial (3-Wire) 16-Pin QSOP T/R
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