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EEPW首頁(yè) > 模擬技術(shù) > 設計應用 > 模擬集成電路的低電壓系統-Analog ICs for Lo

模擬集成電路的低電壓系統-Analog ICs for Lo

作者: 時(shí)間:2012-01-30 來(lái)源:網(wǎng)絡(luò ) 收藏
"PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px">MAX1589MAX1818MAX1589MAX1818MultiplexersMAX4638MAX4638MAX4639MAX4701Op Amps, FastMAX4291MAX410MAX4489MAX4489Op Amps, Low CurrentMAX4036MAX4036MAX4036MAX4036Op Amps, Low OffsetMAX480MAX4236AMAX4238MAX4238Real-Time ClocksDS1375DS1375DS1375DS1375ReferencesMAX6018AMAX6029MAX6029MAX6029RS-232MAX218MAX3381EMAX3322EMAX3232ERS-485
MAX3471MAX3471MAX3076EUSBMAX3453MAX3453MAX3453MAX3453

Power Savings from Low-Voltage Operation

The power saved by reducing a system supply voltage from 5V to a lower value can be dramatic. For resistive and capacitive loads, power saved is proportional to the voltage squared. For constant-current loads such as references and op amps, the savings are linear. For constant-power loads such as hard-disk drives, the switch to low voltage does not save power, but requires the device to operate at a lower input voltage. Table 2 summarizes the power savings offered by lower voltage systems as compared to 5V systems.

Table 2. Power Savings Compared to 5V When Using Lower Voltages
Load TypePower-Savings
Formula
Power Savings Compared to 5V (%)
1.8V
Operation
2.5V
Operation
3V
Operation
3.3V
Operation
Resistive(1 - (V / 5)2) x 10087756456
Capacitive(1 - (V / 5)2) x 10087756456
Constant Current(V / 5) x 100645040

DIY機械鍵盤(pán)相關(guān)社區:機械鍵盤(pán)DIY




關(guān)鍵詞: 模擬 集成 電路 低電壓系統

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