A Product Line of
Diodes Incorporated
PAM8610
10W STEREO CLASS-D AUDIO POWER AMPLIFIER WITH DC VOLUME CONTROL
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.
Pin Assignments
Features
10W @ 10%THD/Channel Output into a 8Ω Load at 13V
Low Noise: -90dB
Over 90% Efficiency
32 Step DC Volume Control from -75dB to +32dB
With Shutdown/Mute/Fade Function
Over Current , Thermal and Short-Circuit Protection
Low THD+N
Low Quiescent Current
Pop Noise Suppression
Small Package Outlines: Thin 40-pin QFN 6mm*6mm Package
Pb-Free Package (RoHS Complaint)
Applications
Flat Monitor /LCD TVS
Multi-Media Speaker System
DVD Players, Game Machines
Boom Box
Music Instruments
Typical Applications Circuit
PAM8610
Document number: DSxxxxx Rev. 1 - 2
1 of 15
www.diodes.com
June 2013
© Diodes Incorporated
A Product Line of
Diodes Incorporated
PAM8610
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
Pin Name
RINN
RINP
AVDD
VREF
VOLUME
REF GND
AGND1
FADE
LINP
LINN
PGNDL
PVCCL
LOUTN
BSLN
BSLP
LO UTP
VCLAMPL
CO SC
RO SC
AGND
MUTE
AVCC
V2P5
SD
VCLAMPR
PGNDR
PVCCR
ROUTP
BSRP
BSRN
ROUTN
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.
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.
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.
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.
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.
PAM8610
Document number: DSxxxxx Rev. 1 - 2
2 of 15
www.diodes.com
June 2013
© Diodes Incorporated
A Product Line of
Diodes Incorporated
PAM8610
Functional Block Diagram
Absolute Maximum Ratings
(@T
A
= +25°C, unless otherwise specified.)
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.
Parameter
Supply Voltage V
DD
Input Voltage RangeV
I
:
MUTE, V
REF
, VOLUME, FADE
SD
RINN, RINP, LINN, LINP
Junction Temperature Range, T
J
Storage Temperature
Lead Temperature 1, 6mm (1/16 inch)
0 to +6.0
-0.3 to V
DD
-0.3 to +6.0
-40 to +125
-65 to +150
260, 5 sec
°C
V
Rating
-0.3 to +16.5
Unit
V
PAM8610
Document number: DSxxxxx Rev. 1 - 2
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June 2013
© Diodes Incorporated
A Product Line of
Diodes Incorporated
PAM8610
Recommended Operating Conditions
(@T
A
= +25°C, unless otherwise specified.)
Parameter
Supply Voltage (V
DD
)
Maximum Volume Control Pins,
Input Pins Voltage
High Level Input Voltage:
SD
MUTE, FADE
Low Level Input Voltage:
SD
MUTE, FADE
Ambient Operating Temperature
Rating
7 to 15
0 to +5.0
V
Unit
2.0 to V
DD
2.0 to 5.0
0 to +0.3
0 to +0.3
-20 to +85
V
V
°C
Thermal Information
Parameter
Thermal Resistance (Junction to Ambient)
Thermal Resistance (Junction to Case)
Package
QFN6mm*6mm
QFN6mm*6mm
Symbol
θ
JA
θ
JC
Max
18.1
7.6
Unit
°C/W
The Exposed PAD must be soldered to a thermal land on the PCB.
Electrical Characteristics
(@T
A
= +25°C, V
DD
= 12V, R
L
= 8Ω, unless otherwise specified.)
Parameter
Supply Voltage
Symbol
V
DD
THD+N = 0.1%, f = 1kHz, R
L
= 8Ω
THD+N = 1.0%, f = 1kHz, R
L
= 8Ω
Continuous Output Power
P
O
THD+N = 10%, f = 1kHz, R
L
= 8Ω,
V
DD
= 13V
THD+N = 0.1%, f = 1kHz, R
L
= 4Ω (Note 3)
Total Harmonic Distortion plus Noise
Quiescent Current
Supply Quiescent Current in
Shutdown Mode
Drain-Source On-State Resistance
THD+N
I
DD
I
SD
P
O
= 5W, f = 1kHz, R
L
= 8Ω
No Load
Shutdown = 0V
V
CC
= 12V
I
O
= 1A
T
J
= +25°C
High Side
Low Side
Total
Test Conditions
Min
7.0
Typ
12
5
8
10
15
0.1
20
4
200
200
400
-60
250
-90
-80
80
30
2.5
5.0
150
40
5.5
30
10
%
mA
µA
W
Max
15
Units
V
R
DS(ON)
mΩ
Power Supply Ripple Rejection
Oscillator Frequency
Output Integrated Noise Floor
Crosstalk
Signal to Noise Ratio
Output Offset Voltage
(measured differentially)
2.5V Bias Voltage
Internal Analog Supply Voltage
Over Temperature Shutdown
Thermal Hysteresis
Note:
PSRR
f
OSC
VN
CS
SNR
|V
OS
|
V2P5
AV
DD
OTS
OTH
1V
PP
Ripple, f = 1kHz,
Inputs AC-Coupled to Ground
R
OSC
= 120kΩ, C
OSC
= 220pF
20Hz to 22kHz, A-Weighting
P
O
= 3W, R
L
= 8Ω, f = 1kHz
Maximum output at THD+N < 0.5%,
f = 1kHz
INN and INP connected together
No Load
V
DD
= 7V to 15V
dB
kHz
dB
dB
dB
mV
V
V
°C
°C
3. Heat sink is required for high power output.
PAM8610
Document number: DSxxxxx Rev. 1 - 2
4 of 15
www.diodes.com
June 2013
© Diodes Incorporated
A Product Line of
Diodes Incorporated
PAM8610
Typical Performance Characteristics
(@T
A
= +25°C, V
DD
= 12V, R
L
= 8Ω, G
V
= 24dB, unless otherwise specified.)
PAM8610
Document number: DSxxxxx Rev. 1 - 2
5 of 15
www.diodes.com
June 2013
© Diodes Incorporated
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