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MAX19794数据资料

消耗积分:0 | 格式:pdf | 大小:4.02 MB | 2012-07-24

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The MAX19794 dual general-purpose analog voltagevariable attenuator (VVA) is designed to interfacewith 50I systems operating in the 10MHz to 500MHzfrequency range. This device includes a patented controlcircuit that provides 22.4dB of attenuation range (perattenuator) with a typical linear control slope of 8dB/V.Both attenuators share a common analog control.They can be cascaded together to yield 44.7dB oftotal attenuation range with a typical combined linearcontrol slope of 16dB/V (5V operation). Alternatively, theon-chip, 4-wire SPI-controlled 10-bit DAC can be usedto control both attenuators. In addition, a step-up/downfeature allows user-programmable attenuator steppingthrough command pulses without re-programming theSPI interface.
 
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