# LMS6002D as receiver only - what to do with Tx pins

**URL:** <https://discourse.myriadrf.org/t/lms6002d-as-receiver-only-what-to-do-with-tx-pins/3573>\
**Category:** System Development\
**Created:** [31 October 2018 16:44 UTC](https://discourse.myriadrf.org/t/lms6002d-as-receiver-only-what-to-do-with-tx-pins/3573 "2018-10-31T16:44:37Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![mwo](https://avatars.discourse-cdn.com/v4/letter/m/ea5d25/32.png) [@mwo](https://discourse.myriadrf.org/u/mwo)\
**Post date:** [31 October 2018 16:44 UTC](https://discourse.myriadrf.org/t/lms6002d-as-receiver-only-what-to-do-with-tx-pins/3573/1 "2018-10-31T16:44:37Z")

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If the LMS6002D is only used for Rx and not for any Tx at all, do the Tx-related power supply pins (e.g. TXVCCPLL18, TXVDDVCO18, TXVDDPLL33A, etc, etc…) have to be connected or can they be left unconnected (i.e. floating)?

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**Author:** ![andrewback](https://avatars.discourse-cdn.com/v4/letter/a/22d042/32.png) [@andrewback](https://discourse.myriadrf.org/u/andrewback)\
**Post date:** [1 November 2018 12:36 UTC](https://discourse.myriadrf.org/t/lms6002d-as-receiver-only-what-to-do-with-tx-pins/3573/2 "2018-11-01T12:36:59Z")

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Guessing @Zack or @ricardas may know.

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**Author:** ![ricardas](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/ricardas/32/86_2.png) [@ricardas](https://discourse.myriadrf.org/u/ricardas)\
**Post date:** [1 November 2018 17:40 UTC](https://discourse.myriadrf.org/t/lms6002d-as-receiver-only-what-to-do-with-tx-pins/3573/3 "2018-11-01T17:40:37Z")

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Don’t know, I only worked on it’s software

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**Author:** ![Zack](https://yyz2.discourse-cdn.com/flex034/user_avatar/discourse.myriadrf.org/zack/32/89_2.png) [@Zack](https://discourse.myriadrf.org/u/Zack)\
**Post date:** [2 November 2018 07:04 UTC](https://discourse.myriadrf.org/t/lms6002d-as-receiver-only-what-to-do-with-tx-pins/3573/4 "2018-11-02T07:04:00Z")

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Hi @mwo,

Connect power related pins to appropriate power supplies. You can leave output pins of the digital TX interface unconnected.

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**Author:** ![mwo](https://avatars.discourse-cdn.com/v4/letter/m/ea5d25/32.png) [@mwo](https://discourse.myriadrf.org/u/mwo)\
**Post date:** [2 November 2018 19:33 UTC](https://discourse.myriadrf.org/t/lms6002d-as-receiver-only-what-to-do-with-tx-pins/3573/5 "2018-11-02T19:33:24Z")

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Thanks, Zack! Just to clarify, please. Even though the Tx components of the chip are not used, you would still recommend providing power to the Tx power pins?