BL4863
Typical Application Circuit
VDD
Rf=20KΩ
Cs=1uF
PIN 4 17
Audio Ci=1uF
input
-INA
CO=100uF
-OUTA
Ri=20KΩ
Amp 1A
20KΩ
Amp 2A
HEADPHONE JACK
+OUTA
+OUTB
+INA
To HP_IN Circuit
CB=0.33uF
BP
+INB
Amp 2B
20KΩ
CO=100uF
-OUTB
Audio Ci=1uF
input
Amp 1B
-INB
Ri=20KΩ
VDD
SHD
HP_IN
HP-DET
To Control Pin on
100KΩ
Headphone Jack
PIN 2 7 10 11 19
Rf=20KΩ
GND
** SHD and HP-IN Operation Logic Level truth table
SHD
Low
Low
High
High
HP-IN
Low
OPERATION MODE
Bridged amplifiers
Single-Ended amplifiers
Shutdown
High
Low
High
Shutdown
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