max9702etit Maxim Integrated Products, Inc., max9702etit Datasheet - Page 13

• Manufacturer Part Number: max9702etit
• Description: Max9702 1.8w, Filterless, Stereo, Class D Audio Power Amplifier And Directdrive Stereo Headphone Amplifier
• Manufacturer: Maxim Integrated Products, Inc.

Amplifier and DirectDrive Stereo Headphone Amplifier
25, 26
1, 22
PIN
10
11
12
13
14
15
16
17
18
19
20
21
23
24
27
28
EP
2
3
4
5
6
7
8
9
______________________________________________________________________________________
1.8W, Filterless, Stereo, Class D Audio Power
SYNC_OUT
CPGND
OUTR+
CPV
OUTL+
OUTR-
NAME
CPV
OUTL-
SHDN
PGND
SYNC
PV
BIAS
GND
SDA
C1N
HPR
HPS
SCL
C1P
HPL
V
INM
V
INR
INL
EP
DD
SS
DD
DD
SS
H-Bridge Power Supply. Connect to V
PGND.
Clock Signal Output. Float SYNC_OUT if not used.
I
I
Common-Mode Voltage. Bypass to GND with a 1µF capacitor.
Frequency Mode Select:
SYNC = GND: Fixed-frequency mode with f
SYNC = Float: Fixed-frequency mode with f
SYNC = V
SYNC = Clocked: Fixed-frequency mode with f
Charge-Pump Power Supply. Connect to V
Charge-Pump Flying-Capacitor Positive Terminal. Connect a 1µF capacitor from C1P to C1N.
Charge-Pump Power Ground. Connect to PGND.
Charge-Pump Flying-Capacitor Negative Terminal. Connect a 1µF capacitor from C1N to
C1P.
Charge-Pump Negative Output. Bypass with a 1µF capacitor to CPGND.
Headphone Amplifier Negative Supply. Connect to CPV
Left-Channel Headphone Output
Right-Channel Headphone Output
Analog Power Supply. Bypass with a 1µF capacitor to GND.
Analog Ground. Connect to PGND.
Right-Channel Audio Input
Left-Channel Audio Input
Mono Audio Input
Headphone Sense:
HPS = V
HPS = GND: Speaker mode.
Active-Low Shutdown. Connect to V
Right-Channel Positive Amplifier Output
Right-Channel Negative Amplifier Output
Power Ground. Connect to GND.
Left-Channel Negative Amplifier Output
Left-Channel Positive Amplifier Output
Exposed Pad. The external pad lowers the package’s thermal impedance by providing a
direct heat conduction path from the die to the printed circuit board. The exposed pad is
internally connected to V
possible or to V
2
2
C Serial Clock. Connect a pullup resistor to V
C Serial Data. Connect a pullup resistor to V
DD
DD
: Headphone mode.
: Spread-spectrum mode with f
SS
.
SS
. Connect the exposed thermal pad to an isolated plane if
DD
DD
for normal operation.
FUNCTION
and bypass each PV
DD
S
S
S
= 1100kHz.
= 1340kHz.
= 1150kHz ±50kHz.
DD
and bypass to CPGND with a 1µF capacitor.
DD
S
= external clock frequency.
(see I
(see I
2
C Interface section).
SS
2
C Interface section).
.
DD
with a 0.1µF capacitor to
Pin Description
13