參數(shù)資料
型號： EVAL-AD7705EBZ
廠商： Analog Devices Inc
文件頁數(shù)： 36/44頁
文件大?。?/td> 0K
描述： BOARD EVALUATION FOR AD7705
標準包裝： 1
ADC 的數(shù)量： 1
位數(shù)： 16
采樣率（每秒）： 500
數(shù)據(jù)接口： 串行
輸入范圍： 0 ~ 5.25 V
在以下條件下的電源（標準）： 6.5mW @ 500SPS
工作溫度： -40°C ~ 85°C
已用 IC / 零件： AD7705
已供物品： 板，CD
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更多...
AD7705/AD7706
Rev. C | Page 41 of 44
BATTERY MONITORING
An application where the low power, single-supply operation is
required is battery monitoring in portable equipment applications.
Figure 29 shows a block diagram of a battery monitor using the
AD7705 and an external multiplexer to measure differentially
the voltage across a single cell.
The second channel on the AD7705 is used to monitor current
drain from the battery. The AD7705, with its dual-input
channel, is ideally suited for measurement systems requiring
two input channels, as in this case, to monitor voltage and
current.
Because the AD7705 can accommodate very low input signals,
RSENSE can be kept low, reducing undesired power dissipation.
Operating with a gain of 128, a ±9.57 mV full-scale signal can
be measured with a resolution of 2 μV, giving 13.5 bits of flicker-
free performance in such a system.
To obtain specified performance in unbuffered mode, the
common-mode range of the input is GND to VDD, provided that
the absolute value of the analog input voltage lies between
GND 100 mV and VDD + 30 mV. Absolute voltages of
GND 200 mV can be accommodated on the AD7705 at 25°C
without any degradation in performance, but with significantly
increased leakage at elevated temperatures.
VCELL 1
RSENSE
AIN1(+)
AIN1(–)
AIN2(+)
AIN2(–)
REF IN(–)
AD7705
VDD
REF IN(+)
1.225V
REF
VOLTAGE
REGULATORS
VCELL 2
VCELL 3
VCELL 4
VDIFF1
VDIFF2
VDIFF3
VDIFF4
DC BATTERY
CHARGING
SOURCE
LOAD
ON/OFF SWITCH
5V
3V
GND
4-TO-1
DIFFERENTIAL
MULTIPLEXER
01166-029
Figure 29. Battery Monitoring Using the AD7705
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EVAL-AD7706EB 制造商:Analog Devices 功能描述:EVALUATION BOARD I.C. - Bulk
EVAL-AD7706EBZ 功能描述:BOARD EVALUATION FOR AD7706 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標準）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
EVAL-AD7707EB 制造商:Analog Devices 功能描述:EVAL KIT FOR 3V/5 V, 610 V INPUT RANGE, 1 MW 3-CH 16BIT, SIG - Bulk
EVAL-AD7708EB 制造商:Analog Devices 功能描述:EVALUATION BOARD I.C. - Bulk
EVAL-AD7708EBZ 功能描述:BOARD EVAL FOR AD7708 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標準）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
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