BH7884EFV_05 Datasheet, PDF (1/9 Pages) Rohm – 1W+1W Stereo Speaker / Headphone Amplifier

TECHNICAL NOTE
Speaker /Headphone Amplifier Series
1W+1W Stereo Speaker /
Headphone Amplifier
BH7884EFV
●Description
The BH7884EFV is a low voltage, low noise, high output speaker and headphone amplifier drive, in which a BiCMOS
process is used. This IC supports: headphone amplifier gain adjustment, active/suspend switching, speaker amplifier
stereo/monaural switching, and amplifier mute switching. All functions are controllable from a microcontroller. Built-in digital
noise reduction circuits eliminate digital noise and BEEP sounds.
●Features
1) Built-in 1W+1W stereo speaker amplifier (Vcc=5V, RL=8Ω, THD=10%)
2) Built-in stereo headphone amplifier
3) Built-in bass boost function for speaker amplifier
4) Built-in low noise VCA (electronic volume) for headphone
5) Built-in mute circuit
6) Built-in standby circuit
7) Low current consumption specifications (9 mA TYP. in ACTIVE mode, 0.2 μA TYP. in SUSPEND mode)
●Applications
Notebook computers, LCD TVs, etc.
●Absolute maximum ratings(Ta=25°C)
Parameter
Limits
Unit
Supply voltage
+6.0
V
Power dissipation
1100 *1
mW
Storage temperature
-55 ～ +125
°C
Operating temperature
-10 ～ +70
°C
*1 Reduced by 11 mW/C at 25C or higher, when mounting on a 70mmX70mmX1.6mm PCB board).
●Operating range (Ta=25°C)
Parameter
Limits
Unit
Supply voltage
+3.0~+5.5
V
* This IC is not designed to be radiation-resistant.
Oct. 2005