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lnx2012-10-07 17:45:43
Do it yourself
lnx, 2012-10-07 17:45:43

Chip - digital tone control, switch?

Please tell me a more or less modern microcircuit that would meet the following requirements:

  1. Stereo
  2. As low distortion and noise as possible
  3. Signal source switcher 2-3 channels
  4. one way out
  5. Volume/balance control
  6. Bass / treble tone control (if also midrange, then good)
  7. control digital TWI (I²C) or whatever is fashionable there now

It will be driven by some MK from the AVR family
. I would like something newer than pensioners, such as TDA8425, TDA7313, TDA7318 and similar developments 20 years ago.
While in mind TDA7439.

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3 answer(s)
A
Atxmega, 2012-10-07
@Atxmega

Texas Instruments has a lot of interesting things
for example TAS5086

The filling is just tin
Features
Audio Input/Output
Automatic Master Clock Rate and Data Sample Rate Detection
Four Serial Audio Inputs (Eight Channels)
Support for 32-, 44.1-, 48-, 88.2-, 96-, 176.4-, and 192-kHz Sampling Rates
Data Formats: 16-, 20-, or 24-Bit Input Data; Left-Justified, Right-Justified, and I2S
64- or 48-fS Bit-Clock Rate
128-, 192-, 256-, 384-, and 512-fS Master Clock Rates (Up to a Maximum of 50 MHz)
Six PWM Audio Output Channels
Any Output Channel Can be Mapped to Any Output Pin
Supports Single-Ended and Bridge-Tied Loads
I2S Serial Audio Output
Audio Processing
Volume Control Range of 48 dB to -100 dB
Master Volume Control from 24 dB to -100 dB in 0.5-dB Increments
Six Individual Channel Volume Controls With 24-dB to -100-dB Attenuation in 0.5-dB Increments
Serial Output Can Be Produced by Downmix of 5.1-Channel Input or Fourth Serial Input
5.1-Channel Downmix to 2.1 or 3.1 PWM Output Speaker System
Integrated Bass Management
Two Programmable Biquads in Subwoofer Channel
Full Six-Channel Input and Output Mapping
Selectable DC Blocking Filters
PWM Processing
8× Oversampling With Fourth-Order Noise Shaping at 44.1, 48 kHz; 4× Oversampling at 88.2, 96 kHz; 2× Oversampling at 176.4, 192 kHz; and 12× Oversampling at 32 kHz
≥105-dB Dynamic Range (TAS5086+TAS5186)
THD < 0.06% (TAS5086 Only)
20-Hz—20-kHz Flat Noise Floor for 44.1-, 48-, 88.2-, 96-, 176.4- and 192-kHz Data Rates
Digital De-Emphasis for 32-kHz, 44.1-kHz and 48-kHz Data Rates
Intelligent AM Interference Avoidance System Provides Clear AM Reception
Optimized PWM Sequence for Click- and Popless Start and Stop
Optimized PWM Sequence for Charging of AC-Coupling Capacitors in Single-Ended Configurations
Adjustable Modulation Limit From 93.8% to 99.2%
General Features
Automated Operation With Easy-to-Use Control Interface
I2C Serial Control Slave Interface
Control Interface Operational Without MCLK
Single 3.3-V Power Supply
38-Pin TSSOP Package

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wowscheg, 2012-10-12
@wowscheg

TDA7439 is a very worthy option, not an ultra-modern development, but quite a very personal one. I have personal experience in building a tone block with a switch, I took a schematic on a radio cat .

R
radioxoma, 2014-04-15
@radioxoma

Python 2 HOWTO Fetch Internet Resources Using urllib2 from the official documentation.

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