A Product Line of
Diodes Incorporated
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.
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)
Pin Assignments
Applications
bootstrap 5
∙ Flat Monitor /LCD TVS ∙ Multi-Media Speaker System ∙
DVD Players, Game Machines
∙ Boom Box ∙ Music Instruments
Typical Applications Circuit
Edited by Foxit Reader
Copyright(C) by Foxit Software Company,2005-2008For Evaluation Only.
Pin Descriptions
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.
Recommended Operating Conditions(@T A = +25°C, unless otherwise specified.)
Thermal Information
Parameter Package
Symbol
Max
Unit
Thermal Resistance (Junction to Ambient) QFN6mm*6mm θJA18.1
°C/W
Thermal Resistance (Junction to Case) QFN6mm*6mm θJC7.6
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 Symbol Test
Conditions Min
Typ
Max
Units Supply Voltage V DD7.0 12 15 V
Continuous Output Power P O THD+N = 0.1%, f = 1kHz, R L = 8Ω    5
W THD+N = 1.0%, f = 1kHz, R L = 8Ω 8  THD+N = 10%, f = 1kHz, R L = 8Ω,
V DD = 13V
10  THD+N = 0.1%, f = 1kHz, R L = 4Ω (Note 3)  15
Total Harmonic Distortion plus Noise THD+N P O = 5W, f = 1kHz, R L = 8Ω 0.1  % Quiescent Current I DD No Load 20 30 mA Supply Quiescent Current in
Shutdown Mode I SD
Shutdown = 0V    4 10 µA
Drain-Source On-State Resistance R DS(ON)V CC = 12V
I O = 1A
T J = +25°C
High Side 200
mΩ
Low Side 200
Total  400
Power Supply Ripple Rejection PSRR 1V PP Ripple, f = 1kHz,
Inputs AC-Coupled to Ground
-60  dB
Oscillator Frequency f OSC R OSC = 120kΩ, C OSC = 220pF  250  kHz Output Integrated Noise Floor VN 20Hz to 22kHz, A-Weighting -90 dB Crosstalk CS P O = 3W, R L = 8Ω, f = 1kHz  -80  dB
Signal to Noise Ratio SNR Maximum output at THD+N < 0.5%,
f = 1kHz
80  dB
Output Offset Voltage
(measured differentially)
|V OS| INN and INP connected together  30  mV 2.5V Bias Voltage V2P5 No Load    2.5  V Internal Analog Supply Voltage AV DD V DD = 7V to 15V    5.0 5.5 V Over Temperature Shutdown OTS  150  °C Thermal Hysteresis OTH  40  °C
Typical Performance Characteristics (@T A = +25°C, V DD = 12V, R L = 8Ω, G V = 24dB, unless otherwise specified.)

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