Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

REQ: Digital volume control.

Status
Not open for further replies.

pico

Full Member level 6
Joined
Sep 30, 2001
Messages
324
Helped
32
Reputation
64
Reaction score
19
Trophy points
1,298
Activity points
1,887
tc9153 volume control

Anybody can help please.
 

Dspnut

Full Member level 2
Joined
Jul 18, 2002
Messages
141
Helped
10
Reputation
18
Reaction score
5
Trophy points
1,298
Activity points
1,267
control cs3310

Search for an app. note (AN737) in the Microchip website. This app note may not answer all of your questions, but it may give you some idea to get started. This app note shows how to apply a digital potentiometer MCP42100 (the idea can be applied for other digital potentiometers) to design low pass adjustable filters.
 

asena

Member level 4
Joined
Jan 23, 2003
Messages
75
Helped
4
Reputation
8
Reaction score
1
Trophy points
1,288
Location
Portugal
Activity points
652
tc9153 (ka2250)

Search the application notes of the major manufacturers of Digital Pots.
You may start with Maxim, Analog Devices, Burr-Brown...etc..etc...

regards
asena
 

TomAss

Junior Member level 2
Joined
Jul 18, 2001
Messages
23
Helped
2
Reputation
4
Reaction score
2
Trophy points
1,283
Activity points
235
volume control with mcp42100

...also try crystal CS3310. It has really wonderful performance.
 

stroma

Advanced Member level 4
Joined
Apr 25, 2002
Messages
114
Helped
9
Reputation
18
Reaction score
6
Trophy points
1,298
Activity points
837
tc9153 projects

i'm using Burr-Brown PGA2310 it is full analog of CS3310. it has better performance i.e. -+15V analog pover supply. but it is not cheap :(
 

bimbla

Advanced Member level 1
Joined
Jul 13, 2001
Messages
419
Helped
23
Reputation
46
Reaction score
8
Trophy points
1,298
Activity points
3,608
vol control with tc9153

The concept in flatulent's post is perfect.
We can go in for designing one using LM317(Linear design) or using 3525(Switched mode design)

bimbla.
 

btbass

Advanced Member level 5
Joined
Jul 20, 2001
Messages
1,897
Helped
438
Reputation
880
Reaction score
287
Trophy points
1,363
Location
Oberon
Activity points
12,861
volum digital tc9153

A good hi-fi solution is the Wolfson WM8816 IC. The design is based on resistor chains with external op-amps.
The gain of each channel can be independantly programmed from -111.5dB to + 15dB through a digital serial control interface.
 

ash

Full Member level 3
Joined
Dec 25, 2002
Messages
151
Helped
2
Reputation
4
Reaction score
1
Trophy points
1,298
Location
Europe
Activity points
1,051
hi fi digital volume control

the best solution: ds1669 ic
search for datasheets.
 

2000

Member level 5
Joined
May 14, 2001
Messages
87
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
764
simple analog switches

hello friend,

I've been working on a digital volume control. The cheapest and easiest way was to raise the ground of the load and use a counter conected to a 8->1 analog switch and finally a darlington driver to pull down the load and a series resistor to real ground. Works fine and can be implemented with CMOS logic with a 3V3 lihtium cell / super capacitor and still have memory!!!! you can implement with any number of taps....
I hope this helps...

regards,


2000
 

boram69

Member level 1
Joined
Jan 6, 2002
Messages
41
Helped
3
Reputation
6
Reaction score
3
Trophy points
1,288
Activity points
212
Hi
I recommend "KIC9235".
It's Maker : http://www.kec.co.kr/
but you can not find it that's site.
follow Attachments is Datasheet.
Have a nice day!
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top