Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Pass Labs This forum is dedicated to Pass Labs discussion.

Pass D1 - What chip is U5?
Pass D1 - What chip is U5?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 3rd April 2006, 03:49 PM   #1
hifimaker is offline hifimaker  United States
diyAudio Member
hifimaker's Avatar
Join Date: Oct 2003
Location: San Jose
Default Pass D1 - What chip is U5?

I was wondering what chip U5 was in the Pass D1 service manual.

Here's the text describing the chip:

U7 and U4 along with VCO module U3 form a secondary PLL
circuit to clock the digital filter and DACís. U5 and U2 are separate
regulators for the VCO and PLL chips. R5 and R6 along with C13
form the PLL filter. When the system is locked U7 pins 3 and 14 are at the word clock rate (44.1 for cd).

Thank you,

Attached Images
File Type: jpg d1-u5.jpg (31.0 KB, 434 views)
  Reply With Quote
Old 3rd April 2006, 04:32 PM   #2
wayne is offline wayne  United States
In the hills
diyAudio Member
Join Date: Jan 2002
Location: Northern California
Pass D1 - What chip is U5?
U5 is an NPC 5842 digital filter. This was a top of the line NPC.

  Reply With Quote


Pass D1 - What chip is U5?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
DIY Low Pass and Mid/High Pass (Bass Blocking) Filters runslikealpaca Everything Else 1 19th June 2009 10:59 PM
Paging Mr. Pass, Mr. Pass pull my finger please. khundude Pass Labs 2 5th December 2008 04:11 AM
Amperes of Pass amps & Pass for ESL rick57 Pass Labs 3 4th August 2005 03:28 PM
My opinion on Pass Labs and Mr. Pass (Nelson) himself b_online Pass Labs 11 21st May 2003 12:39 AM
external pass trans on chip reg. tbla Solid State 1 25th November 2002 10:41 AM

New To Site? Need Help?

All times are GMT. The time now is 06:26 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio