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rev_n: Updates from DFM review
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@ppannuto
ppannuto committed Oct 21, 2024
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35 changes: 20 additions & 15 deletions hardware/tottag/rev_n/rev_n v67.brd → hardware/tottag/rev_n/rev_n v70.brd
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,7 @@
<layer number="26" name="bNames" color="7" fill="1" visible="yes" active="yes"/>
<layer number="27" name="tValues" color="7" fill="1" visible="no" active="yes"/>
<layer number="28" name="bValues" color="7" fill="1" visible="no" active="yes"/>
<layer number="29" name="tStop" color="7" fill="3" visible="yes" active="yes"/>
<layer number="29" name="tStop" color="7" fill="3" visible="no" active="yes"/>
<layer number="30" name="bStop" color="7" fill="6" visible="no" active="yes"/>
<layer number="31" name="tCream" color="7" fill="4" visible="no" active="yes"/>
<layer number="32" name="bCream" color="7" fill="5" visible="no" active="yes"/>
Expand Down Expand Up @@ -3927,16 +3927,20 @@ Cream is an estimate.</text>
<classes>
<class number="0" name="default" width="0" drill="0">
</class>
<class number="1" name="BLE_RF" width="0" drill="0">
<class number="1" name="BLE_RF" width="0.22" drill="0">
<clearance class="1" value="0.15"/>
</class>
<class number="2" name="UWB_RF" width="0" drill="0">
<class number="2" name="UWB_RF" width="0.22" drill="0">
<clearance class="2" value="0.15"/>
</class>
<class number="3" name="USB_PHY" width="0" drill="0">
<class number="3" name="USB_PHY" width="0.1524" drill="0">
<clearance class="3" value="0.3048"/>
</class>
<class number="4" name="UWB_XTAL" width="0" drill="0">
<class number="4" name="UWB_XTAL" width="0.22" drill="0">
<clearance class="4" value="0.15"/>
</class>
</classes>
<designrules name="drc">
<designrules name="drc *">
<param name="mdWireWire" value="4mil"/>
<param name="mdWirePad" value="4mil"/>
<param name="mdWireVia" value="5mil"/>
Expand Down Expand Up @@ -4002,11 +4006,11 @@ design rules under a new name.</description>
<param name="psElongationOffset" value="100"/>
<param name="mvStopFrame" value="1"/>
<param name="mvCreamFrame" value="0"/>
<param name="mlMinStopFrame" value="4mil"/>
<param name="mlMaxStopFrame" value="4mil"/>
<param name="mlMinStopFrame" value="1mil"/>
<param name="mlMaxStopFrame" value="1.25mil"/>
<param name="mlMinCreamFrame" value="0mil"/>
<param name="mlMaxCreamFrame" value="0mil"/>
<param name="mlViaStopLimit" value="0mil"/>
<param name="mlViaStopLimit" value="12mil"/>
<param name="srRoundness" value="0"/>
<param name="srMinRoundness" value="0mil"/>
<param name="srMaxRoundness" value="0mil"/>
Expand Down Expand Up @@ -4214,8 +4218,7 @@ design rules under a new name.</description>
<attribute name="VALUE" x="-20.5232" y="11.9936" size="0.508" layer="27" font="vector" ratio="18" rot="R180" align="top-center"/>
</element>
<element name="R15" library="passives" library_urn="urn:adsk.eagle:library:20904581" package="0402_RES" package3d_urn="urn:adsk.eagle:package:20904668/2" value="2.2k" x="-18.288" y="7.8232" smashed="yes" rot="R180">
<attribute name="DIGIKEY" value="RMCF0402JT2K20CT-ND" x="-18.288" y="7.8232" size="1.778" layer="27" rot="R180" display="off"/>
<attribute name="MPN" value="RMCF0402JT2K20" x="-18.288" y="7.8232" size="1.778" layer="27" rot="R180" display="off"/>
<attribute name="MPN" value="RC0402FR-072K2L" x="-18.288" y="7.8232" size="1.778" layer="27" rot="R180" display="off"/>
<attribute name="NAME" x="-18.288" y="7.5184" size="0.508" layer="25" font="vector" ratio="18" rot="R180" align="bottom-center"/>
<attribute name="VALUE" x="-18.288" y="9.2202" size="0.508" layer="27" font="vector" ratio="18" rot="R180" align="bottom-center"/>
</element>
Expand Down Expand Up @@ -4360,11 +4363,13 @@ design rules under a new name.</description>
<attribute name="MPN" value="GRM155R71C104KA88J " x="1.016" y="-3.2512" size="1.778" layer="27" display="off"/>
<attribute name="NAME" x="1.016" y="-3.556" size="0.508" layer="25" font="vector" ratio="18" rot="R180" align="bottom-center"/>
</element>
<element name="R13" library="passives" package="0402_RES" value="1k" x="1.01011875" y="-1.01011875" smashed="yes">
<element name="R13" library="passives" package="0402_RES" value="2.2k" x="1.01011875" y="-1.01011875" smashed="yes">
<attribute name="MPN" value="RC0402FR-072K2L" x="1.01011875" y="-1.01011875" size="1.778" layer="27" display="off"/>
<attribute name="NAME" x="1.01011875" y="-1.28951875" size="0.508" layer="25" font="vector" ratio="18" rot="R180" align="bottom-center"/>
<attribute name="TOL" value="1%" x="1.01011875" y="-1.01011875" size="1.778" layer="27" display="off"/>
<attribute name="VALUE" x="1.01011875" y="-2.40711875" size="0.508" layer="27" font="vector" ratio="18" align="bottom-center"/>
</element>
<element name="R14" library="passives" package="0402_RES" value="1k" x="1.016" y="0.1104875" smashed="yes" rot="R180">
<element name="RX14" library="passives" package="0402_RES" value="DNP" x="1.016" y="0.1104875" smashed="yes" rot="R180">
<attribute name="NAME" x="1.016" y="-0.1689125" size="0.508" layer="25" font="vector" ratio="18" rot="R180" align="bottom-center"/>
<attribute name="VALUE" x="1.016" y="1.5074875" size="0.508" layer="27" font="vector" ratio="18" rot="R180" align="bottom-center"/>
</element>
Expand Down Expand Up @@ -5288,7 +5293,7 @@ design rules under a new name.</description>
<contactref element="C53" pad="2"/>
<contactref element="C29" pad="2"/>
<contactref element="C30" pad="2"/>
<contactref element="R14" pad="1"/>
<contactref element="RX14" pad="1"/>
<via x="-20.2946" y="-2.5146" extent="1-16" drill="0.2032">
</via>
<via x="-21.5138" y="-3.2512" extent="1-16" drill="0.2032">
Expand Down Expand Up @@ -8362,7 +8367,7 @@ design rules under a new name.</description>
</signal>
<signal name="N$70">
<contactref element="R13" pad="1"/>
<contactref element="R14" pad="2"/>
<contactref element="RX14" pad="2"/>
<wire x1="0.58293125" y1="0.1104875" x2="0.58293125" y2="-1.0042375" width="0.1524" layer="1"/>
<wire x1="0.58293125" y1="-1.0042375" x2="0.57705" y2="-1.01011875" width="0.1524" layer="1"/>
</signal>
Expand Down
35 changes: 20 additions & 15 deletions hardware/tottag/rev_n/rev_n v31.sch → hardware/tottag/rev_n/rev_n_v32.sch
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Original file line number Diff line number Diff line change
Expand Up @@ -8103,8 +8103,7 @@ on the KXR Package</text>
<part name="SUPPLY2" library="supply1" library_urn="urn:adsk.eagle:library:371" deviceset="GND" device=""/>
<part name="SUPPLY14" library="supply1" library_urn="urn:adsk.eagle:library:371" deviceset="GND" device=""/>
<part name="R15" library="passives" library_urn="urn:adsk.eagle:library:20904581" deviceset="RESISTOR" device="0402_RES" package3d_urn="urn:adsk.eagle:package:20904668/2" value="2.2k">
<attribute name="DIGIKEY" value="RMCF0402JT2K20CT-ND"/>
<attribute name="MPN" value="RMCF0402JT2K20"/>
<attribute name="MPN" value="RC0402FR-072K2L"/>
</part>
<part name="JP2" library="SparkFun-Jumpers" library_urn="urn:adsk.eagle:library:528" deviceset="JUMPER-SMT_3_1-NC_TRACE" device="_SILK" package3d_urn="urn:adsk.eagle:package:39288/1"/>
<part name="XR19" library="passives" deviceset="RESISTOR" device="0402_RES" value="10k">
Expand Down Expand Up @@ -8202,8 +8201,11 @@ on the KXR Package</text>
<attribute name="MPN" value="GRM155R71C104KA88J "/>
</part>
<part name="SUPPLY39" library="supply1" library_urn="urn:adsk.eagle:library:371" deviceset="GND" device=""/>
<part name="R13" library="passives" deviceset="RESISTOR" device="0402_RES" value="1k"/>
<part name="R14" library="passives" deviceset="RESISTOR" device="0402_RES" value="1k"/>
<part name="R13" library="passives" deviceset="RESISTOR" device="0402_RES" value="2.2k">
<attribute name="MPN" value="RC0402FR-072K2L"/>
<attribute name="TOL" value="1%"/>
</part>
<part name="RX14" library="passives" deviceset="RESISTOR" device="0402_RES" value="DNP"/>
<part name="GND6" library="supply1" library_urn="urn:adsk.eagle:library:371" deviceset="GND" device=""/>
<part name="LS1" library="audio" library_urn="urn:adsk.eagle:library:20947603" deviceset="PUI_SMT-0440-T-2-R" device="" package3d_urn="urn:adsk.eagle:package:21033088/3"/>
<part name="D4" library="passives" library_urn="urn:adsk.eagle:library:20904581" deviceset="DIODE" device="0402" package3d_urn="urn:adsk.eagle:package:20904648/2">
Expand Down Expand Up @@ -8877,7 +8879,7 @@ to allow trim.</text>
Need to - 2*97.6 = 328Ω</text>
<wire x1="76.2" y1="116.84" x2="137.16" y2="116.84" width="0.127" layer="98" style="shortdash"/>
<wire x1="76.2" y1="116.84" x2="76.2" y2="149.86" width="0.127" layer="98" style="shortdash"/>
<text x="77.47" y="148.844" size="0.8128" layer="98" align="top-left">Reference: Datasheet §7.3.13 TS Resistor Network
<text x="76.962" y="145.288" size="0.6096" layer="98" align="top-left">Reference: Datasheet §7.3.13 TS Resistor Network
----
Properties from the BQ51013B datasheet:
Internal to chip (behind TS pad) is a 20kΩ pull-up to 2.2V
Expand All @@ -8892,7 +8894,9 @@ Thermistor datasheet values (where does it hit those R's?):
"Safe to touch" std says 60ºC
NTC is 2.97kΩ @ 60ºC
easy shift is add 2kΩ offset to NTC
now V_COLD trips when NTC is 26.5kΩ (1.8ºC)</text>
now V_COLD trips when NTC is 26.5kΩ (1.8ºC)
----
Rev N: use 2.2kΩ to reduce BOM count</text>
<wire x1="76.2" y1="149.86" x2="137.16" y2="149.86" width="0.127" layer="98" style="shortdash"/>
<wire x1="137.16" y1="116.84" x2="137.16" y2="149.86" width="0.127" layer="98" style="shortdash"/>
<text x="74.93" y="68.58" size="0.8128" layer="98" align="top-left">Datasheet wants a 10k NTC B=3370
Expand Down Expand Up @@ -8937,11 +8941,11 @@ Guess
small
filter</text>
<text x="110.744" y="128.27" size="0.8128" layer="98" rot="R90" align="top-left">Fig32 NTC</text>
<text x="87.122" y="122.174" size="0.8128" layer="98" align="top-left">Fig32 R1</text>
<wire x1="97.79" y1="128.27" x2="82.55" y2="128.27" width="0.127" layer="98" style="shortdash"/>
<wire x1="82.55" y1="128.27" x2="82.55" y2="120.65" width="0.127" layer="98" style="shortdash"/>
<wire x1="97.79" y1="128.27" x2="97.79" y2="120.65" width="0.127" layer="98" style="shortdash"/>
<wire x1="97.79" y1="120.65" x2="82.55" y2="120.65" width="0.127" layer="98" style="shortdash"/>
<text x="87.884" y="119.634" size="0.8128" layer="98" align="top-left">Fig32 R1</text>
<wire x1="98.552" y1="128.27" x2="82.042" y2="128.27" width="0.127" layer="98" style="shortdash"/>
<wire x1="82.042" y1="128.27" x2="82.042" y2="118.364" width="0.127" layer="98" style="shortdash"/>
<wire x1="98.552" y1="128.27" x2="98.552" y2="118.364" width="0.127" layer="98" style="shortdash"/>
<wire x1="98.552" y1="118.364" x2="82.042" y2="118.364" width="0.127" layer="98" style="shortdash"/>
<text x="39.37" y="63.5" size="0.8128" layer="98" align="top-left">ISET controls constant charge current
Battery wants 0.2C * 1200 mAh = 240 mA

Expand Down Expand Up @@ -9142,7 +9146,6 @@ Pins</text>
<instance part="R15" gate="G$1" x="48.26" y="88.9" smashed="yes" rot="R90">
<attribute name="NAME" x="46.7614" y="85.09" size="1.778" layer="95" rot="R90"/>
<attribute name="VALUE" x="51.562" y="85.09" size="1.778" layer="96" rot="R90"/>
<attribute name="DIGIKEY" x="48.26" y="88.9" size="1.27" layer="96" rot="R90" align="top-left" display="off"/>
<attribute name="MPN" x="48.26" y="88.9" size="1.27" layer="96" rot="R90" align="top-left" display="off"/>
</instance>
<instance part="JP2" gate="G$1" x="101.6" y="71.12" smashed="yes" rot="R270">
Expand Down Expand Up @@ -9316,8 +9319,10 @@ Pins</text>
<instance part="R13" gate="G$1" x="96.52" y="124.46" smashed="yes">
<attribute name="NAME" x="92.71" y="125.9586" size="1.778" layer="95"/>
<attribute name="VALUE" x="92.71" y="121.158" size="1.778" layer="96"/>
<attribute name="MPN" x="96.52" y="124.46" size="1.778" layer="96" display="off"/>
<attribute name="TOL" x="92.456" y="119.888" size="0.8128" layer="96" display="both"/>
</instance>
<instance part="R14" gate="G$1" x="86.36" y="124.46" smashed="yes">
<instance part="RX14" gate="G$1" x="86.36" y="124.46" smashed="yes">
<attribute name="NAME" x="82.55" y="125.9586" size="1.778" layer="95"/>
<attribute name="VALUE" x="82.55" y="121.158" size="1.778" layer="96"/>
</instance>
Expand Down Expand Up @@ -9573,7 +9578,7 @@ Pins</text>
<wire x1="129.54" y1="127" x2="129.54" y2="124.46" width="0.1524" layer="91"/>
</segment>
<segment>
<pinref part="R14" gate="G$1" pin="1"/>
<pinref part="RX14" gate="G$1" pin="1"/>
<pinref part="SUPPLY38" gate="1" pin="GND"/>
<wire x1="81.28" y1="124.46" x2="78.74" y2="124.46" width="0.1524" layer="91"/>
<wire x1="78.74" y1="124.46" x2="78.74" y2="121.92" width="0.1524" layer="91"/>
Expand Down Expand Up @@ -10121,7 +10126,7 @@ Pins</text>
<net name="N$70" class="0">
<segment>
<pinref part="R13" gate="G$1" pin="1"/>
<pinref part="R14" gate="G$1" pin="2"/>
<pinref part="RX14" gate="G$1" pin="2"/>
<wire x1="91.44" y1="124.46" x2="88.9" y2="124.46" width="0.1524" layer="91"/>
</segment>
</net>
Expand Down

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