RF Bluetooth front end circuitry design of nRF51822 QFAA-G0

RE: RF Bluetooth front end circuitry design of nRF51822 QFAA-G0

ovrebekk — Wed, 12 Feb 2014 12:29:41 GMT

Hi Richard

This is good news, thanks a lot for the additional information :)

Regards Torbjørn

RENARD — Wed, 12 Feb 2014 11:40:46 GMT

Hello,

Please find attached the prel. datasheet of the BALF-NRF01D3.

Best Regards Richard

RENARD — Thu, 23 Jan 2014 16:10:06 GMT

Hello Torbjørn,

The new balun BALF-NRF01D3 is ready for production and will be released in volumes by e/o March - b/o April. It works with G0 and B0 versions.

Best Regards Richard

Bastiaan — Mon, 09 Dec 2013 20:53:52 GMT

thank you Torbjørn. the issue is answered.

Guest — Mon, 09 Dec 2013 20:53:52 GMT

thank you Torbjørn. the issue is answered.

ovrebekk — Mon, 09 Dec 2013 17:20:28 GMT

Hi Fenglong

This is covered by item 61 in the nRF51822 PAN: www.nordicsemi.com/.../12268137

Basically you can get too high RX LO leakage with the latest revision of the nRF51822, which could make the RF qualification fail.

Most likely an updated balun from ST will have to be released that will fix the issue, the exact timing for this is still TBD.

Best regards Torbjørn