Class-AB Speaker Amplifiers
2W + 2W Stereo Speaker / Headphone Amplifier
BH7881EFV
No.10077EAT05
●Description
The BH78...
Class-AB Speaker
Amplifiers
2W + 2W Stereo Speaker / Headphone Amplifier
BH7881EFV
No.10077EAT05
●Description
The BH7881EFV is a low
voltage, low noise, high output speaker/headphone amplifier IC, in which a Bi-
CMOS process is used. An on-chip speaker amplifier circuit that is capable of 2W+2W output can be used as a headphone amplifier by switching the operating mode. This makes it possible to configure an audio system using few external devices. With a built-in, low saturation regulator with programmable output
voltage and output current, clear tone quality is obtained even when directly connected to a digital power supply. A peripheral analog circuit can also be regulator driven. Furthermore, the BH7881EFV provides speaker output and VREG output short-circuit detection functions, a thermal shutdown function with hysteresis, and a speaker protection function.
●Features
1) Built-in low saturation type regulator (Digital power supply driver,
voltage and current variable, short circuit detection) 2) Bass boost mode, gain switching functions 3) Speaker MUTE function (Headphone mode) 4) Built-in line amplifier output (gain adjustment, LPF setting) active/suspend function (TTL input control pin) 5) Hysteretic thermal shutdown function (Set for approximately 150℃ /90℃)
6) IC protection function (SP pin VCC/GND short circuit detection) 7) Speaker protection function (Output
voltage amplitude control)
●Applications Notebook computers, LCD TVs, etc.
●Absolute maximum ratings (Ta...