參數(shù)資料
型號: UCB1200BE
廠商: NXP SEMICONDUCTORS
元件分類: 調(diào)制器/解調(diào)器
英文描述: Advanced modem/audio analog front-end
中文描述: MODEM-SUPPORT CIRCUIT, PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, SOT-313-2, LQFP-48
文件頁數(shù): 23/54頁
文件大小: 1052K
代理商: UCB1200BE
1998 Jul 22
23
Philips Semiconductors
Product specification
Advanced modem/audio analog front-end
UCB1200
The applied voltage on the four analog inputs of the UCB1200 (AD0 - AD3) is attenuated before it is applied to the ADC
input multiplexer using on chip resistive dividers.These high voltage inputs are optimized to handle voltages larger than
the applied supply voltage. The built-in resistive voltage dividers are only activated if the corresponding analog input is
selected. The resistive dividers are made floating when the input is not selected by the ADC input multiplexer, such that
the input leakage of these high voltage analog pins is minimized. This makes these analog inputs very suitable to monitor
battery voltage voltages.
Fig.18 Block diagram of resistive dividers AD0 - AD3.
AD[n]
adc
input
MUX
ADC_INPUT[n]
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