Three-band digitally-controlled audio processor with 2 Pin i2C Control

[Zossen]

http://www.st.com/stonline/products/literature/ds/4291/tda7439.pdf

Input multiplexer

– four stereo inputs

– selectable input gain for optimal adaptation

to different sources

! Single stereo output

! Treble, mid-range and bass control in 2-dB

steps

! Volume control in 1-dB steps

! Two speaker attenuators:

– two independent speaker controls in 1-dB

steps for balance facility

– independent mute function

! All functions are programmable via serial bus

for the Midimixer istead or to help TI PGA 43**/23** ??? Control possible with Mios ?

[stryd_one]

Ooooh there’s external filtering for the three frequency bands. Tasteful. Unfortunately the crossover frequencies are fixed

Can you actually find the chips available as a stocked item?

[Zossen]

;D Jes i have in front of me, see attachment  ; Digital in ; Cinch in ; Tape ;CD  1 cabel to AMP ; 1 cable to I2C

And the Chips are here for less than 3€

Stock Reported Date**

AMERICA DIGIKEY 0 29-May-2008

ASIA/PACIFIC DIGIKEY        0 29-May-2008

EUROPE SPOERLE       272 28-May-2008

http://www.spoerle.com/web_ctrl/0,5747,00.html?application=SEARCH&event=1000&search_token=TDA7439&search_criteria=match_begins_with&match_in_stock_only=NO&rows_to_display=10&super_neda=60552&start_index=0&search_type=click_through&catID=&partDescription=&SupplierNeda=&full_domain_name=www.spoerle.com&domain=spoerle

or here

http://www.cdlens.com/?item=6913

[stryd_one]

The topic was successfully added to your bookmarks!

Which means: This is interesting but I am personally way too busy right now

Anyone?

PS Zossen what is that board? Just out of curiosity…

[Zossen]

thats a board from  JVC-Musik-Box (pic3) , 6 years old ;Tape and Cd-player broken , so now i have

an 2x70W+2x20W AMP with the Controlboard with  AD7439 ; 4 Alps Encoders with Knops , 30 switches and a new projekt . When the equi would be controlled by a Pic then i have a Digital controlled Amp with 4 Channel In.  But i think that this equi funktion in Stereo could be usefull for others ,too. if somebody interested i can copy the boardlayout to eagle or NI

The Encoders and Knops for are now the first part (FX-Control ; 6 Buttons ;3 Encoder ; 2 Pots , 8 Led’s) of my midbox. Pic 4 )