MAX4295 Maxim, MAX4295 Datasheet - Page 16

• Manufacturer Part Number: MAX4295
• Description: Mono/Stereo 2W Switch-Mode (Class-D) Audio Power Amplifiers
• Manufacturer: Maxim

Mono/Stereo 2W Switch-Mode (Class-D)
Audio Power Amplifiers
a 10µF capacitor in parallel with a 1µF capacitor to
GND. Ceramic capacitors are recommended due to
their low ESR.
Good PC board layout techniques optimize perfor-
mance by decreasing the amount of stray capacitance
at the amplifier’s inputs and outputs. To decrease stray
capacitance, minimize trace lengths by placing exter-
nal components as close as possible to the amplifier.
Surface-mount components are recommended.
The MAX4295/MAX4297 require two separate ground
planes to prevent switching noise from the MOSFETs in
the H-bridge from coupling into the rest of the circuit.
PGND, the power ground, is utilized by the H-bridge
and any external output components, while GND is
used by the rest of the circuit. Connect the PGND and
GND planes at only one point, as close to the power
supply as possible. Any external components associat-
ed with the output of the MAX4295/MAX4297 must be
connected to the PGND plane where applicable. Use
the Typical Operating Circuit diagram as a reference.
16
TOP VIEW
______________________________________________________________________________________
PGND
AOUT
OUT+
PV
VCM
GND
V
CC
CC
IN
1
2
6
3
4
5
7
8
SO/QSOP
MAX4295
16
15
14
13
12
11
10
9
SS
PV
OUT-
PGND
GND
FS2
FS1
SHDN
CC
Refer to the evaluation kit manual for suggested com-
ponent values, component suppliers, and layout.
TRANSISTOR COUNT: MAX4295: 846
PROCESS: BiCMOS
OUT+ R
OUT+ L
AOUTR
AOUTL
PGND
PGND
PV
PV
GND
V
INR
INL
CC
CC
CC
10
11
12
1
2
3
4
5
6
7
8
9
SO/SSOP
MAX4297
MAX4297: 1191
Pin Configurations
Chip Information
24
23
22
21
20
19
18
17
16
15
14
13
SS
V
SHDN
PV
OUT- L
PGND
PGND
OUT-R
PV
FS2
FS1
VCM
CC
CC
CC