NJM2705 - New Japan Radio

NJM2705 Surround Audio Processor

The NJM2705 is the surround audio processor for mobile applications. It regenerates the 3D surround sound with extremely narrow space two speakers (2SP mode), headphone surround with normal headphone (HP mode) and reverberation sound with only one speaker (1SP mode). It includes mode control switches for surround function and standby function and realizes lo.

Features

q Operating Voltage q Operating Current 1.8 to 6V 0.7mA typ. at Active mode 1µA max. at Standby mode q Low Output Noise 10µVrms typ (2SP/HP/1SP mode, VR : max.) q Variable Surround Effect by external resistor (Adjustable for speaker and headphone independently.) q Standby Function q Internal Mode Control Switch q Bipolar Technology q Package Outline FFP16, PCSP16, SSOP16 s BLOCK DIAGRAM LOUT LIN 3D Filter 1SP Surround ROUT 3D Enhancer RIN Bypass mode 2SP mode Surround mode HP mode 1SP mode -1- NJM2705 s PIN CONFIGURATION FFP16 (Top View) 12 11 10 13 14 15 16 1 PCSP16 (Top View) 9 8 7 .