Audio

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Application Notes
NEW
APN 008 Sowftare - Fast ADC result to unit conversion
NEW
APN 007 Digital control a switchmode regulators output voltage
APN 006 Relais based Audio Attenuator

APN 005 Building Audio Opamps, fact, no myths and THD measurement results [pdf]
Building Audio Amplifier with integrated Power stages (Chipamps)[pdf]
Appendix_A__SSR_and_THD [pdf]
Appendix_B__Measurement results – in numbers and graphs[pdf]
Appendix_C_Differential, single Ended and pseudo differential Audio signals[pdf]
Appendix_D_Volatage regulators for Audio Power Amplifier[pdf]
APN (Audio IIR Biquad in fixed point esp. for Cortex M) Rev 0.2 [pdf]
APN (Audio IIR Biquad in fixed point esp. for Cortex M) Rev 0.1[pdf]
BQ64 Test CODE in C [ZIP]


APN 004 (Tuning in amplifier input stages - Protection) [pdf]
APN 003 (Tuning in amplifier input stages - CMRR) [pdf]
APN 002 (Damping oscillator distortion)[pdf]
APN 001 (A blameless audio buffer (or headphone amplifier) design )



Devices

The AMP II  (bipolar)
The Preamp MKII
The UltiDAC
The Headamp
PLL1700
Little AMP (LAMP)
Mini DAC & Headamp
USB Soundcard



Measurement stuff:

Ultrapure Sine Oscillator


old Stuff:

 The AMP
(HEXFET)

 Preamp MKI


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