data brief for further information contact your local stmicroelectronics sales office. november 2010 doc id 18258 rev 1 1/5 5 STEVAL-CCA009V1 high performance stereo headpho ne driver demonstration board based on the ts4601b features power supply range: 2.9 v to 5.5 v 107 db of psrr at 217 hz fully differential inputs i 2 c interface for volume control digital volume control range from -60 db to +4 db 101 db of snr a-weighted independent right and left channel shutdown control low quiescent current: 4.8 ma typ. at 3.0 v low standby current: 2 a max rohs compliant description the STEVAL-CCA009V1 demonstration board is designed to evaluate the ts4601b, a stereo headphone driver dedicated to high audio performance and space constrained applications. it is based on low power dissipation, amplifier core technology with capacitor-less outputs and an i2c interface. the STEVAL-CCA009V1 demonstration board can drive at a minimum 0.9 vrms output voltage into 16 ? and 1.6 vrms into 10 k ? , whatever the power supply voltage, in the range from 2.9 v to 5.5 v. the i 2 c interface is used to control the volume by means of 64 steps from -60 db to +4 db and to configure the device in multiple modes. the traditionally used output-coupling capacitors can be removed and a dedicated common-mode sense pin suppresses parasitic noise from the jack. ts4601b control software is also provided. STEVAL-CCA009V1 www.st.com
circuit schematic STEVAL-CCA009V1 2/5 doc id 18258 rev 1 1 circuit schematic figure 1. ts4601 main application & |