From: Bdale Garbee <bdale@gag.com>
Date: Mon, 24 Feb 2014 01:17:14 +0000 (-0700)
Subject: op amps only need picoamps of bias, so use 1M resistors for the divider
X-Git-Tag: fab-dual-source-1.0~5
X-Git-Url: https://git.gag.com/?p=hw%2Fchaoskey;a=commitdiff_plain;h=a3713be8c30223240a07eb12ae51a10b1301590b

op amps only need picoamps of bias, so use 1M resistors for the divider
---

diff --git a/usbtrng.pcb b/usbtrng.pcb
index 556cae9..b7bc6cd 100644
--- a/usbtrng.pcb
+++ b/usbtrng.pcb
@@ -1017,14 +1017,14 @@ Element["" "0402" "R71" "150k" 679.26mil 275.00mil 31.50mil 31.50mil 2 100 ""]
 
 	)
 
-Element["" "0402" "R75" "10k" 429.00mil 550.00mil -31.50mil 31.50mil 1 100 ""]
+Element["" "0402" "R75" "1M" 429.00mil 550.00mil -31.50mil 31.50mil 1 100 ""]
 (
 	Pad[-3.93mil 15.74mil 3.93mil 15.74mil 19.68mil 20.00mil 25.68mil "1" "1" "square"]
 	Pad[-3.93mil -15.74mil 3.93mil -15.74mil 19.68mil 20.00mil 25.68mil "2" "2" "square"]
 
 	)
 
-Element["" "0402" "R74" "10k" 429.00mil 488.00mil -31.50mil 31.50mil 1 100 ""]
+Element["" "0402" "R74" "1M" 429.00mil 488.00mil -31.50mil 31.50mil 1 100 ""]
 (
 	Pad[-3.93mil 15.74mil 3.93mil 15.74mil 19.68mil 20.00mil 25.68mil "1" "1" "square"]
 	Pad[-3.93mil -15.74mil 3.93mil -15.74mil 19.68mil 20.00mil 25.68mil "2" "2" "square"]
diff --git a/usbtrng.sch b/usbtrng.sch
index 129335a..aba94e5 100644
--- a/usbtrng.sch
+++ b/usbtrng.sch
@@ -811,9 +811,9 @@ vendor=digikey
 T 65400 55200 5 10 1 1 0 0 1
 refdes=R74
 T 65900 55200 5 10 1 1 0 0 1
-value=10k
+value=1M
 T 66300 55600 5 10 0 0 0 0 1
-vendor_part_number=P10.0KLCT-ND
+vendor_part_number=P1.00MLCT-ND
 }
 C 67400 55600 1 180 0 resistor.sym
 {
@@ -828,9 +828,9 @@ vendor=digikey
 T 66500 55200 5 10 1 1 0 0 1
 refdes=R75
 T 67000 55200 5 10 1 1 0 0 1
-value=10k
+value=1M
 T 67400 55600 5 10 0 1 0 0 1
-vendor_part_number=P10.0KLCT-ND
+vendor_part_number=P1.00MLCT-ND
 }
 N 66300 55500 66500 55500 4
 N 66400 55000 66400 55500 4