NCP2704

NCP2704 Audio Management Integrated Circuit with 2.8 W Class D and LongPlay True Ground Headphone Amplifier http://onsemi.com The NCP2704 is a cost effective audio subsystem designed for portable applications such as cellular phones and portable media MARKING DIAGRAM player. It has been designed to cover the power audio requirements in portable equipment: including a high fidelity Class D speaker amplifier and a Class G equivalent LongPlay true ground headphone amplifier. This patented headphone amplifier circuitry allows the removal of the bulky output capacitors and minimize audio playback current consumption with minimum external components. In addition the user can set the output swing to have enough output dynamic even A1 20 PIN CSP FC SUFFIX CASE 499BH NCP2704 AYWW G when a damping resistor is added. Through a flexible I2C interface, NCP2704 can support both single ended and differential types of analog input signal. In both cases, it offers a zero pop noise signature. The same interface allows a user defined architecture with an input control, highly accurate gain setting capability from −60 dB to +12 dB and output control. In addition NCP2704 = Specific Device Code A = Assembly Location Y = Year WW = Work Week G = Pb−Free Package NCP2704 offers the possibility to reduce the EMI perturbation by lowering the rise and fall times of the Class D outputs (software PINOUT programmable). The Loudspeaker also amplifier includes an AGC which performs two functi...