MAX97220 Differential Input Headphone Amplifier Application Circuit

Single chip microcomputer STM32L151CCU6
Photocoupler

The following is the circuit diagram of [MAX97220 differential input headphone amplifier application circuit]

The MAX97220A/B is a differential input line/headphone amplifier that can drive 1K ohm line load at 3VRMS at 5V supply and 600Ω line load at 2VRMS at 3.3V supply. Operating voltage is 2.5V-5.5V, DirectDrive output, no need DC blocking capacitors, THD+N is better than 90dB, and 18-bit SNR performance is 112dB. It is mainly used in STB, Blu-ray and DVD players, LCD TVs and audio equipment.

MAX97220 application:

Set-Top Boxes

Blu-rayK and DVD Players

LCD Televisions

Prosumer Audio Devices

MAX97220 Differential Input Headphone Amplifier Application Circuit

Figure 1. Functional block diagram of the MAX97220

MAX97220 Differential Input Headphone Amplifier Application Circuit

Figure 2. Simplified block diagram of the MAX97220

MAX97220 Differential Input Headphone Amplifier Application Circuit

Figure 3. MAX97220A and MAX9722 PCB layout

MAX97220 Differential Input Headphone Amplifier Application Circuit

Figure 4. MAX97220A/B gain setting diagram

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