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Digital controlled VGA
Hi group
I am looking for an digital controlled variable gain amplifier with BW 200MHz. The amplifier had to have min. 256 steps and should be used in an 50R system therefore impedance match on in- and output are preferred. Max output power 10-20dBm. I canīt find any integrated amplifier there match these requirements. My best choice is AD8368 http://www.analog.com/en/prod/0,,759...8368%2C00.html and then use a DAC for the digital control. Have I missed some? Any suggest will be appreciated very much Thanks in advance Frank |
Digital controlled VGA
Frank Mikkelsen wrote:
Hi group I am looking for an digital controlled variable gain amplifier with BW 200MHz. The amplifier had to have min. 256 steps and should be used in an 50R system therefore impedance match on in- and output are preferred. Max output power 10-20dBm. I canīt find any integrated amplifier there match these requirements. My best choice is AD8368 http://www.analog.com/en/prod/0,,759...8368%2C00.html and then use a DAC for the digital control. Have I missed some? Any suggest will be appreciated very much Thanks in advance Frank Use ADL5330 in combination with a log amp. You can control the ADL5330 with an ADC. As extra bonus, you achieve a very nice automatic level control. //Dan, M0DFI |
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