Wireless MCUのトピックSA616 AUDIO_OUT DC temperature drift https://community.nxp.com/t5/Wireless-MCU/SA616-AUDIO-OUT-DC-temperature-drift/m-p/500111#M1062 <HTML><HEAD></HEAD><BODY><P>&nbsp; Hello. We are designing narrow-band radiomodem in 160 MHz band, receiver based on SA616 IC. There's no information about temperature drift (range from -40 0C to +85 0C) on pin8 AUDIO_OUT(combined with pin7 as a repeater) in SA616 (SSOP20 package).&nbsp; Supply voltage is 5V. DC component rejection (with internal op amp ) isn't good for us, because we use 4-cpfsk modulation, message can contain constant symbols resulting in constant frequency shift. After internal repeating we use amplification and filtering, temperature drift significantly reduce our dynamic range.</P><P>&nbsp; Summarised questions are:</P><P>1) Could you give Pin8 AUDIO_OUT(combined with pin7 as a repeater) temperature drift (range from -40 0C to +85 0C) with 5V supply?</P><P>2) Is there any replacement for SA616 IC?</P></BODY></HTML> Wed, 25 May 2016 12:46:42 GMT rustemkzn 2016-05-25T12:46:42Z SA616 AUDIO_OUT DC temperature drift https://community.nxp.com/t5/Wireless-MCU/SA616-AUDIO-OUT-DC-temperature-drift/m-p/500111#M1062 <HTML><HEAD></HEAD><BODY><P>&nbsp; Hello. We are designing narrow-band radiomodem in 160 MHz band, receiver based on SA616 IC. There's no information about temperature drift (range from -40 0C to +85 0C) on pin8 AUDIO_OUT(combined with pin7 as a repeater) in SA616 (SSOP20 package).&nbsp; Supply voltage is 5V. DC component rejection (with internal op amp ) isn't good for us, because we use 4-cpfsk modulation, message can contain constant symbols resulting in constant frequency shift. After internal repeating we use amplification and filtering, temperature drift significantly reduce our dynamic range.</P><P>&nbsp; Summarised questions are:</P><P>1) Could you give Pin8 AUDIO_OUT(combined with pin7 as a repeater) temperature drift (range from -40 0C to +85 0C) with 5V supply?</P><P>2) Is there any replacement for SA616 IC?</P></BODY></HTML> Wed, 25 May 2016 12:46:42 GMT https://community.nxp.com/t5/Wireless-MCU/SA616-AUDIO-OUT-DC-temperature-drift/m-p/500111#M1062 rustemkzn 2016-05-25T12:46:42Z Re: SA616 AUDIO_OUT DC temperature drift https://community.nxp.com/t5/Wireless-MCU/SA616-AUDIO-OUT-DC-temperature-drift/m-p/500112#M1063 <HTML><HEAD></HEAD><BODY><P>Could anybody give me direct link to NXP support?&nbsp;&nbsp; </P></BODY></HTML> Wed, 25 May 2016 12:52:44 GMT https://community.nxp.com/t5/Wireless-MCU/SA616-AUDIO-OUT-DC-temperature-drift/m-p/500112#M1063 rustemkzn 2016-05-25T12:52:44Z