BU7839GVW Datasheet, PDF (1/16 Pages) Rohm – Digital Input Hi-Fi Class-D Headphone Amplifier

TECHNICAL NOTE
Ultra Small Headphone Amplifier Series
Digital Input Hi-Fi
Class-D Headphone Amplifier
BU7839GVW
●Description
Most suitable for long duration reproduction of digital audio because digital audio data is taken as its input and low power
consumption is realized.
BU7839GVW has Stereo Audio DAC and HP amp functions for digital audio playback.
Pop sound in ramp-up period is reduced due to built-in start-up sound reduction circuit or transistor for mute.
Also, Built-in digital volume which can control L-ch & R-ch separately.
●Features
1) With Stereo Audio DAC and HP amp functions
2) Most suitable for long duration reproduction of digital audio because digital audio data is
taken as its input and low power consumption is realized
3) Pop sound in ramp-up period is reduced due to built-in start-up sound reduction circuit or transistor for mute
4) Built-in digital volume which can control L-ch & R-ch separately
Immediate switching and zero cross switching for reduction of clicking sound at the time of gain change
Gain change methods of soft switching can be selected with registers
5) Sampling frequency compatible with 8kHz-48kHz
6) Compatible with master slave with built-in PLL
7) Built-in soft mute function
8) Compatible with full front and full back formats
9) Compatible with 16, 18 & 24bit formats
10) Compatible with fs=32kHz,44.1kHz,48kHz with de-emphasis function
11) 2wire CPU I/F (2 addresses selectable 33h, 36h)
●Function
Stereo Audio DAC + HPamp
● 2wire CPU I/F
● Serial audio I//F
● Interpolator
● ΔΣModulator
● Level Shifter
● PLL
Aug. 2008