PAM8606
6W Stereo Class-D Audio Power Amplifier with DC Volume Control
Pin Descriptions
Number
Name
RINN
RINP
AVDD
VREF
Function
Negative differential audio input for right channel
Positive differential audio input for right channel
5V Analog VDD
2
3
4
5
6
Analog reference for gain control section
VOLUME
REFGND
AGND1
DC voltage that sets the gain of the amplifier
Ground for gain control circuitry. Connect to AGND. If using a DAC to control the
volume, connect the DAC ground to this terminal.
7
8
Analog GND
Input for controlling volume ramp rate when cycling SD or during power-up. A
logic low on this pin places the amplifier in fade mode. A logic high on this pin
allows a quick transition to the desired volume setting.
Positive differential audio input for left channel
9
FADE
10
11
LINP
LINN
Negative differential audio input for left channel
12,13,24,25
14,15,22,23
16,17
18
PGNDL
PVCCL
LOUTN
BSLN
Power ground for left channel H-bridge
Power supply for left channel H-bridge, not connected to PVCCR or AVCC.
Class-D 1/2-H-bridge negative output for left channel
Bootstrap I/O for left channel, negative high-side FET
Bootstrap I/O for left channel, positive high-side FET
Class-D 1/2-H-bridge positive output for left channel
Internally generated voltage supply for left channel bootstrap capacitors.
I/O for charge/discharging currents onto capacitor for ramp generator triangle
wave biased at V2P5
19
BSLP
20,21
26
LOUTP
VCLAMPL
27
COSC
28
29,33
30
ROSC
AGND
MUTE
AVCC
Current setting resistor for ramp generator.
Analog GND
A logic high on this pin disables the outputs and a logic low enables the outputs.
High-voltage analog power supply (7.0 V to 13.5V)
2.5V Reference for analog cells, as well as reference for unused audio input
when using single-ended inputs.
31
32
34
V2P5
SD
Shutdown signal for IC (low= shutdown, high =operational). TTL logic levels with
compliance to AVCC.
35
1,36,37,48
38,39,46,47
40,41
VCLAMPR
PGNDR
PVCCR
ROUTP
BSRP
Internally generated voltage supply for right channel bootstrap capacitors.
Power ground for right channel H-bridge
Power supply for right channel H-bridge, not connected to PVCCL or AVCC.
Class-D 1/2-H-bridge positive output for right channel
Bootstrap I/O for right channel, positive high-side FET
Bootstrap I/O for right channel, negative high-side FET
Class-D 1/2-H-bridge negative output for right channel
42
43
BSRN
44,45
ROUTN
Power Analog Microelectronics,Inc
www.poweranalog.com
08/2008 Rev 1.1
4
PAM [ POWER ANALOG MICOELECTRONICS ]
