max9768betgt Maxim Integrated Products, Inc., max9768betgt Datasheet - Page 11

• Manufacturer Part Number: max9768betgt
• Description: Max9768 10w Mono Class D Speaker Amplifier With Volume Control
• Manufacturer: Maxim Integrated Products, Inc.

17, 18
21, 22
3, 16
9, 11
PIN
1, 2
10
12
13
14
15
19
20
23
24
EP
4
5
6
7
8
SYNCOUT
SDA/VOL
BOOT+
______________________________________________________________________________________
ADDR2
ADDR1
BOOT-
NAME
OUT+
SHDN
MUTE
PGND
SCLK
SYNC
PV
OUT-
GND
BIAS
V
FB
EP
IN
DD
DD
Positive Speaker Output
Speaker Amplifier Power-Supply Input. Bypass with a 1µF capacitor to ground.
Positive Speaker Output Boost Flying-Capacitor Connection. Connect a 0.1µF ceramic capacitor
between BOOT+ and OUT+.
I
acts as I
PWM modulation, or connect SCLK to ground for filterless modulation.
I
Feedback. Connect feedback resistor between FB and IN to set amplifier gain. See the Adjustable
Gain section.
Audio Input
Ground
Common-Mode Bias Voltage. Bypass with a 2.2µF capacitor to GND.
Frequency Select and External Clock Input.
SYNC = GND: Fixed-frequency mode with f
SYNC = Unconnected: Fixed-frequency mode with f
SYNC = V
SYNC = Clocked: Fixed-frequency mode with f
Clock Signal Output
Power-Supply Input. Bypass with a 1µF capacitor to GND.
Negative Speaker Output Boost Flying-Capacitor Connection. Connect a 0.1µF ceramic capacitor
between BOOTL- and OUTL-.
Negative Speaker Output
Shutdown Input. Drive SHDN low to disable the audio amplifiers. Connect SHDN to V
operation
Mute Input. Drive MUTE high to mute the speaker outputs. Connect MUTE to GND for normal
operation.
Power Ground
Address Select Input 2. I
Address Select Input 1. I
Exposed Pad. Connect the exposed thermal pad to GND, and use multiple vias to a solid copper
area on the bottom of the PCB.
2
2
C Serial-Clock Input and Modulation Scheme Select. In I
C Serial Data I/O and Analog Volume Control Input
2
C serial-clock input. When ADDR1 and ADDR2 = GND. Connect SCLK to V
DD
: Spread-spectrum mode with f
Amplifier with Volume Control
10W Mono Class D Speaker
2
2
C address option, also selects volume control mode.
C address option, also selects volume control mode.
S
FUNCTION
S
= 1200kHz.
= 1200kHz ±30kHz.
S
= external clock frequency.
S
= 1440kHz.
2
C mode (ADDR1 and ADDR2 ≠ GND)
Pin Description
DD
DD
for classic
for normal
11