MAX9736 Maxim Integrated Products, MAX9736 Datasheet - Page 12

• Manufacturer Part Number: MAX9736
• Description: Mono/Stereo High-Power Class D Amplifier
• Manufacturer: Maxim Integrated Products

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Mono/Stereo High-Power Class D Amplifier
12
7, 8, 17
13, 14
23, 24
25, 26
27, 30
28, 29
31, 32
PIN
1, 2
10
11
12
15
16
18
19
20
21
22
—
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3
4
5
6
9
REGEN
OUTR+
OUTL+
MONO
OUTR-
NAME
OUTL-
AGND
PGND
BOOT
MUTE
SHDN
PVDD
COM
MOD
N.C.
REG
C1N
FBR
C1P
FBL
INR
INL
VS
EP
Left-Channel Negative Speaker Output
Charge-Pump Output. Connect a 1µF charge-pump holding capacitor from BOOT to PGND.
Mono Select. Set MONO high for mono mode, low for stereo mode.
Left-Channel Feedback. Connect feedback resistor between FBL and INL to set amplifier gain.
Stereo Left-Channel Inverting Input. In mono mode, INL is the inverting audio input for the mono amplifier.
No Connection. Not internally connected. OK to connect to PGND.
Mute Input. Drive MUTE low to place the device in mute mode.
Shutdown Input. Drive SHDN low to place the device in shutdown mode.
Internal Regulator Enable Input. Connect REGEN to SHDN to enable the internal regulator. Drive REGEN
low to disable the internal regulator, and supply the device with an external 5V supply on VS. See the
Power-Supply Sequencing section.
Internal 2V Bias. Bypass COM to AGND with a 1µF capacitor.
Analog Ground
Internal Regulator Output. Bypass REG to AGND with a 1µF capacitor.
5V Regulator Supply. Bypass VS to AGND with a 1µF capacitor. If REGEN is low, the internal regulator is
disabled, and an external 5V supply must be connected to VS. See the Power-Supply Sequencing
section.
Stereo Right-Channel Inverting Audio Input. In mono mode, INR is the inverting audio input for the
uncommitted preamplifier (see the Mono Configuration section for more details).
Right-Channel Feedback. Connect feedback resistor between FBR and INR to set amplifier gain.
Output Modulation Select. Sets the output modulation scheme:
V
V
Charge-Pump Flying-Capacitor Negative Terminal
Charge-Pump Flying-Capacitor Positive Terminal
Right-Channel Negative Speaker Output
Right-Channel Positive Speaker Output
Power Supply. Bypass each PVDD pin to ground with 0.1µF capacitors. Also, use a single 220µF
capacitor between PVDD and PGND.
Power Ground
Left-Channel Positive Speaker Output
Exposed Pad. Must be externally connected to PGND.
MOD
MOD
= Low, classic PWM/fixed-frequency mode
= High, filterless modulation/spread-spectrum mode
FUNCTION
Pin Description