From 98c9b5bedd5ed359e7bbcc44d95bfcf2365f2986 Mon Sep 17 00:00:00 2001 From: drowe67 Date: Mon, 28 Dec 2015 08:04:13 +0000 Subject: [PATCH] updated power budget calcs git-svn-id: https://svn.code.sf.net/p/freetel/code@2578 01035d8c-6547-0410-b346-abe4f91aad63 --- sm2000/doc/sm202 Task List.txt | 6 +++++- sm2000/doc/sm205_power_budget.xls | Bin 25088 -> 10752 bytes 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/sm2000/doc/sm202 Task List.txt b/sm2000/doc/sm202 Task List.txt index aa8824ac..e5cf499f 100644 --- a/sm2000/doc/sm202 Task List.txt +++ b/sm2000/doc/sm202 Task List.txt @@ -190,10 +190,11 @@ Task List + if not good enough we'll need an external ADC + test against two tone, MDS and ACR + Result: met 135dBm spec on prototype so OK - [ ] Power dissipation of active devices and resistors + [X] Power dissipation of active devices and resistors + easy to exceed limits in SM resistors and transistors + RF drivers draw lots of current + mitigation: power spereadhseet in doc section + + looks good, see also email to Rick 28/12/15 sub: "sm205 powr budget" [X] IF termination of 1st mixer + how to test if this is OK -> Sweep with R/L bridge [X] do we need a way to bypass the LNA? @@ -258,6 +259,9 @@ Task List [ ] how to connect SCA/SCL on clock chips to uC? + is there a separate enable? [ ] LEDs for control signals/rails + [ ] Add a Av=2 op-amp to take 3v3 DAC max from uC to 5V + max for Vgg driving PA final Q14. 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