an12949a Panasonic Corporation of North America, an12949a Datasheet - Page 15

• Manufacturer Part Number: an12949a
• Description: Audio Power Ic For Note Pc
• Manufacturer: Panasonic Corporation of North America

AN12949A
No.
Pin
27
28
29
30
31
Technical Data (continued)
I/O block circuit diagrams and pin function descriptions (continued)
Note) The characteristics listed below are reference values based on the IC design and are not guaranteed.
AC –16 dBV
and voltage
PREOUT_L
Waveform
SP_INL
DC 2.5 V
VREFSP
DC 2 V
DC 2 V
GND
PC3
GND (0 V)
29
GND
VREG
GND
VCCSP (5 V)
GND
VREG(4.2 V)
VREG
28
27
Internal circuit
—
250k
250k
5k
500
SDF00043BEB
31
28
= Equal to or less
= Equal to or less
Input impedance
Input impedance
= About 125 kΩ
Impedance
impedance
impedance
than 10 Ω
than 1 kΩ
Output
= Hi-Z
Output
—
The reference voltage terminal for
determining DC bias of the output
stage of a speaker amplifier system.
Please connect an external capacitor
to remove a ripple.
Output terminal of Lch input amplifier
of speaker amplifier system.
Please connect external resistance for
the gain setting.
Feedback terminal of Lch input
amplifier of speaker amplifier system.
The gain of the Lch input amplifier
can be set by connecting external
resistance with Pin28 and Pin29.
Signal terminal GND.
The terminal GND of Pin7, Pin30, and
Pin41 is connected in IC.
Pre-charge 3.
The pre-charge circuit will be ON for
50 ms and below and OFF.
Once OFF, output will be Hi-Z.
Description
15