tel : 886-2-29162151 fax : 886-2-29174598 url : http://www.princeton.com.tw 4-channel input audio processor ic pt2314 pt2314 v1.1 page 1 revised march 1999 princeton technolo gy cor p . description pt2314 is a four-channel input digital audio processor utilizing cmos technology. volume, bass, treble and balance are incorporated into a single chip. loudness function and selectable input gain are also provided to build a highly effective electronic audio processor having the highest performance and reliability with the least external components. all functions are programmable using the i 2 c bus. the pin assignments and application circuit are optimized for easy pcb layout and cost saving advantage for audio application. features ! cmos technology ! least external components ! treble and bass control ! loudness function ! 4 stereo inputs with selectable input gain ! input/output for external noise reduction system/equalizer ! 2 independent speaker controls for balance control ! independent mute function ! volume control in 1.25 db/step ! low distortion ! low noise and dc stepping ! controlled by i 2 c bus micro-processor interface ! available in 28 pins, dip/so package applications ! car stereo (audio) ! hi-fi audio system note: purchase of i 2 c component of princeton technology corporation (ptc) conveys a license under philips i 2 c patent right to use these components in any i 2 c system, provided that the system conforms to the i 2 c standard specification defined by philips
tel : 886-2-29162151 fax : 886-2-29174598 url : http://www.princeton.com.tw 4-channel input audio processor ic pt2314 pt2314 v1.1 page 2 revised march 1999 princeton technolo gy cor p . pin configuration vdd agnd treb_l treb_r rin rout loud_r rin4 rin3 rin2 rin1 loud_l lin4 lin3 ref clk data dgnd out_l out_r bout_r bin_r bout_l bin_l lout lin lin1 lin2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 pt2314 order information valid part number package type PT2314-D 28 pins, dip (300 mil) pt2314 28 pins, so (300 mil)
tel : 886-2-29162151 fax : 886-2-29174598 url : http://www.princeton.com.tw 4-channel input audio processor ic pt2314 pt2314 v1.1 page 3 revised march 1999 princeton technolo gy cor p . application circuit mcu dgnd data clk lout lin loud_l bout_l bin_l treb_l 2.2u 100n 100n 2.7n 2.7n 22u 100n 100n 100n 100n c11 2.2u c10 c13 c12 c19 c18 c9 c16 c15 c17 c14 5.6k 5.6k r2 r1 out_r out_l 10u c20 10u c21 vdd c7 2.2u c8 2.2u c3 2.2u c4 2.2u c2 2.2u c6 2.2u c1 2.2u c5 2.2u r r r r r r r r rin1 lin1 rin2 lin2 rin3 lin3 rin4 lin4 tape aux cd player am/fm tuner vdd agnd ref rout rin loud_r bout_r bin_r treb_r pt2314 25 26 27 11 16 10 15 9 14 8 13 1 2 28 65 7 22 21 4 24 23 3 19 20 12 17 18 + + + + + + + + + + + + + note: 1. it is suggested that you use mylar capacitor for capacitors, c12 ~ c19. 2. resistor ( r ) range = 2.0 k ohms to 3.6 k ohms 3. recommended value of resistor ( r ) = 2.4 k ohms
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