D-class power amplifier
R2A15120FA
PRELI
MINAR
Y
some
param
etric lim
its are
subjec
t to ch
ange.
CONFIDENTIAL
R2A15120FA
1. General Description
R2A15120FA is standard IC of D-class power amplifier developed for FPD or Home audio etc.
R2A15120FA can realize maximum Power 15W x 2ch
(VD=15V,THD=10%,BTL) at 8
Ω
load.
It is possible to construct the D-class amplifier system easily.
2. Features
●
Output Power 15W at RL=8
Ω
,VD=15V,THD=10%
(Note) Basically,it is necessary thermal-pad is connected
to the board heat radiation part with solder.
●
Corresponding to analog differential/Single, PWM input.
●
Built-in the 2 channels(BTL)
●
Power supply voltage
:
Single power supply operation 11V to 25V recommendation
●
Built-in Over Current Protection, Over Temperature Protection,
and Under Voltage Protection.
●
Built-in monitor terminal for protection mode.
●
Built-in protection circuit for prior warning of over temperature.
●
Settable power limit value of maximum output by external resistor.
●
Adjustable carrier frequency by external resistor.
●
Selectable gain value at four stage by setting two terminals.
Package: 48 pins HTQFP(Body : 7x7mm Lead pitch : 0.5mm)
Note:This amplifier’s continuous maximum power is 15W/8ohm. As more than 15W is output when VD is 24V,
please control output power by changing power-limiter or gain diagram.
2ch x 15W / 8ohm D-class power amplifier
R2A15120FA
R2A15120FA
48pin HTQFP
3
.
Pin Layout
(Top View)
39
41
40
42
44
45
43
46
3
7
5
6
4
9
8
10
1
2
11 12
20
18
19
17
15
14
16
13
24
22
23
21
34
30
32 31
33
28
29
27
36 35
26 25
47
48
38
37
VDB1
OUTA1
HBA1
HBB1
OUTB1
VDA1
OUTB1
OUTA1
VDB1
VDA1
VSA1
INB1
INB2
AV
C
C
GND
MUTEL
ST
B
YL
PROT
VSA2
VREF
OUTB2
VDB2
OUTA2
HBA2
VDA2
HBB2
OUTB2
NC
NC
VDA2
OUTA2
VDB2
RREF
DVDD
RLMT
CL
K
GAIN1
GAIN2
ROSC
VSB1
TE
ST1
TE
ST2
VSB2
INA1
INA2
NC
NC
VD
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