PAM8610 [PAM]

10W Stereo Class-D Audio Power Amplifier with DC Volume Control; 10W立体声D类音频功率放大器直流音量控制
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PAM8610
10W Stereo Class-D Audio Power Amplifier with DC Volume Control
Key Features
n
10W@10%THD / Channel Output into a 8 Ω
Load at 13V
n
Low Noise: -90dB
n
Over 90% Efficiency
n
32Step DC Volume Control from -75dB to 32dB
n
With Shutdown/Mute/Fade Function
n
Over Current , Thermal and Short-Circuit
Protection
n
Low THD+N
n
Low Quiescent Current
n
Pop noise suppression
n
Small Package Outlines: Thin 40-pin QFN
6mm*6mm Package
n
Pb-Free Package (RoHS Compliant)
General Description
The PAM8610 is a 10W (per channel) stereo
class-D audio amplifier with DC Volume Control
which offers low THD+N (0.1%), low EMI, and
good PSRR thus high-quality sound
reproduction. The 32 steps DC volume control
has a +32dB to -75dB range.
The PAM8610 runs off of a 7V to 15V supply at
much higher efficiency than competitors’ Ics.
The PAM8610 only requires very few external
components, significantly saving cost and board
space.
The PAM8610 is available in a 40pin QFN
6mm*6mm package.
Applications
n
n
n
n
n
Flat monitor /LCD TVS
Multi-media speaker System
DVD players, game machines
Boom Box
Music instruments
Typical Application
PVCCR
PVCCR
1μF
1μF
1μF
GND
1μF
10 μ F
10 μ F
ROUTN
PGNDR
ROUTN
PVCCR
PGNDR
ROUTP
ROUTP
BSRN
BSRP
PVCCR
GND
1μF
VCLAMPR
RINN
RINP
GND
1μF
RINN
GND
SHUTDOWN
1μF
1μF
RINP
SD
AGND
AVDD
VREF
1μF
V2P5
GND
GND
VOLUME
VOLUME
REFGND
PAM8610
AVCC
10 μ F
VCC
100nF
MUTE
GND
MUTE
AGND
GND
AGND1
120K
FADE
LINP
LINN
1μF
1μF
FADE
LINP
LINN
ROSC
COSC
220pF
VCLAMPL
GND
GND
1μF
PGNDL
LOUTN
PVCCL
LOUTN
PVCCL
1μF
1μF
10 μ F
1μF
1μF
LOUTP
10 μ F
PVCCL
PVCCL
GND
Power Analog Microelectronics
,
Inc
www.poweranalog.com
1
08/2008 Rev 1.2
GND
PGNDL
LOUTP
BSLN
BSLP
PAM8610
10W Stereo Class-D Audio Power Amplifier with DC Volume Control
Block Diagram
BSRN
PVCCR
ROUTN
PGNDR
BSRP
PVCCR
Driver
ROUTP
Driver
_
+
_
+
RINN
RINP
+
+ -
-
PAM
Modulation
VOLUME
FADE
Gain
Adjust
PGNDR
Feedback
System
AVCC
ROSC
COSC
AVDD
AGND
osc
on/off
Depop
LDO
Biases &
References
BSLN
PVCCL
Driver
LOUTN
PGNDL
BSLP
PVCCL
Driver
LOUTP
PGNDL
Feedback
System
Thermal
Short Circuit
Protection
SD
V2P5
MUTE
LINN
LINP
+
+ -
-
_
+
_
+
PAM
Modulation
Power Analog Microelectronics
,
Inc
www.poweranalog.com
2
08/2008 Rev 1.2
PAM8610
10W Stereo Class-D Audio Power Amplifier with DC Volume Control
Pin Configuration & Marking Information
Top View
6mm*6mm QFN
PGNDR
ROUTN
ROUTN
PVCCR
PGNDR
ROUTP
ROUTP
PVCCR
BSRN
BSRP
40
RINN
RINP
AVDD
VREF
VOLUME
REFGND
AGND1
FADE
LINP
LINN
39
38
37
36
35
34
33
32
31
30
29
28
27
VCLAMPR
SD
AGND
V2P5
AVCC
MUTE
AGND
ROSC
COSC
VCLAMPL
1
2
3
4
5
6
7
8
9
10
PAM8610
XATYWWLL
26
25
24
23
22
21
X: Internal Code
A: Assembly Code
T: Testing Code
Y: Year
WW: Week
LL: Internal Code
11
12
13
LOUTN
14
LOUTN
15
BSLN
16
BSLP
17
LOUTP
18
LOUTP
19
PVCCL
20
PGNDL
PGNDL
Power Analog Microelectronics
,
Inc
www.poweranalog.com
3
08/2008 Rev 1.2
PVCCL
PAM8610
10W Stereo Class-D Audio Power Amplifier with DC Volume Control
Pin Descriptions
Pin Number
1
2
3
4
5
6
7
8
9
10
11,20
12,19
13,14
15
16
17,18
21
22
23
24,28
25
26
27
29
30
31,40
32,39
33,34
35
36
37,38
Name
RINN
RINP
AVDD
VREF
VOLUME
REFGND
AGND1
Function
Negative differential audio input for right channel
Positive differential audio input for right channel
5V Analog VDD
Analog reference for gain control section
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.
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.
LINP
LINN
PGNDL
PVCCL
LOUTN
BSLN
BSLP
LOUTP
Positive differential audio input for left channel
Negative differential audio input for left channel
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
I/O for charge/discharging currents onto capacitor for ramp generator triangle
wave biased at V2P5
Current setting resistor for ramp generator. Nominally equal to 1/8*VCC
Analog GND
A logic high on this pin disables the outputs and a logic low enables the outputs.
High-voltage analog power supply (7V to 15V)
2.5V Reference for analog cells, as well as reference for unused audio input
when using single-ended inputs.
Shutdown signal for IC (low= shutdown, high =operational). TTL logic levels with
compliance to VCC.
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
FADE
VCLAMPL Internally generated voltage supply for left channel bootstrap capacitors.
COSC
ROSC
AGND
MUTE
AVCC
V2P5
SD
VCLAMPR Internally generated voltage supply for right channel bootstrap capacitors.
PGNDR
PVCCR
ROUTP
BSRP
BSRN
ROUTN
Power Analog Microelectronics
,
Inc
www.poweranalog.com
4
08/2008 Rev 1.2
PAM8610
10W Stereo Class-D Audio Power Amplifier with DC Volume Control
Absolute Maximum Ratings
These are stress ratings only and functional operation is not implied
.
Exposure to absolute
maximum ratings for prolonged time periods may affect device reliability
.
All voltages are with
respect to ground
.
Supply Voltage V
DD
.........................-0.3V to16.5V
Input Voltage Range V
I
:
MUTE,VREF,VOLUME, FADE ................0V to 6.0V
SD ....................................................-0.3V to V
DD
RINN,RINP,LINN,LINP......................-0.3V to 6.0V
Junction Temperature Range,T
J
......-40°C to 125 °C
Storage Temperature.....................-65 °C to150 °C
Lead Temperature1,6mm(1/16 inch) from case for
5 seconds.................................................260 °C
Recommended Operating Conditions
Supply Voltage (V
DD
)............................7V to 15V
Maximum Volume Control Pins, Input Pins
Voltage................................................0V to 5.0V
High Level Input Voltage: SD .................2.0V to V
DD
MUTE , FADE ...2.0V to 5V
Low Level Input Voltage: SD ...................0 to 0.3V
MUTE , FADE .....0 to 0.3V
Ambient Operating Temperature......-20 °C to 85 °C
Thermal Information
Parameter
Thermal Resistance
(Junction to Case)
Thermal Resistance
(Junction to Ambient)
Package
QFN 6mm*6mm
QFN 6mm*6mm
Symbol
θ
JC
θ
JA
Maximum
7.6
°C/W
18.1
Unit
The Exposed PAD must be soldered to a thermal land on the PCB.
Power Analog Microelectronics
,
Inc
www.poweranalog.com
5
08/2008 Rev 1.2