Diodes PAM8610 User Manual

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10W STEREO CLASS-D AUDIO POWER AMPLIFIER WITH DC VOLUME CONT ROL

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

Pin Assignments

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PAM8610

 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)

Typical Applications Circuit

Applications

 Flat Monitor /LCD TVS  Multi-Media Speaker System  DVD Players, Game Machines  Boom Box  Music Instruments

PAM8610

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Pin Descriptions

Pin Number Pin Name Function

1 RINN Negative differential audio input for right channel. 2 RINP Positive differential audio input for right channel. 3 AVDD 5V Analog VDD 4 VREF Analog reference for gain control section. 5 VOLUME DC voltage that sets the gain of the amplifier.

6 REF GND 7 AGND1 Analog GND

8

9 LINP Positive differential audio input for left channel.

10 LINN Negative differential audio input for left channel. 11, 20 PGNDL Power ground for left channel H-bridge. 12, 19 PVCCL Power supply for left channel H-bridge, not connected to PVCCR or AVCC. 13, 14 LOUTN Class-D 1/2-H-bridge negative output for left channel.

15 BSLN Bootstrap I/O for left channel, negative high-side FET.

16 BSLP Bootstrap I/O for left channel, positive high-side FET. 17, 18 LO UTP Class-D 1/2-H-bridge positive output for left channel.

21 VCLAMPL Internally generated voltage supply for left channel bootstrap capacitors.

22 CO SC

23 RO SC Current setting resistor for ramp generator. Nominally equal to 1/8*VCC. 24, 28 AGND Analog GND

25 MUTE A logic high on this pin disables the outputs and a logic low enables the outputs.

26 AVCC High-voltage analog power supply (7V to 15V)

27 V2P5

29

30 VCLAMPR Internally generated voltage supply for right channel bootstrap capacitors. 31, 40 PGNDR Power ground for right channel H-bridge. 32, 39 PVCCR Power supply for right channel H-bridge, not connected to PVCCL or AVCC. 33, 34 ROUTP Class-D 1/2-H-bridge positive output for right channel.

35 BSRP Bootstrap I/O for right channel, positive high-side FET.

36 BSRN Bootstrap I/O for right channel, negative high-side FET. 37, 38 ROUTN Class-D 1/2-H-bridge negative output for right channel.

FADE

SD

PAM8610

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Ground for gain control circuitry. Connect to AGND. If using a DAC to control the volume, connect the DAC ground to this terminal.

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.

I/O for charge/discharging currents onto capacitor for ramp generator triangle wave biased at V2P5.

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.

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Functional Block Diagram

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PAM8610

Absolute Maximum Ratings (@T

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 Rating Unit

Supply Voltage VDD Input Voltage RangeVI: MUTE, V SD

RINN, RINP, LINN, LINP -0.3 to +6.0 Junction Temperature Range, TJ Storage Temperature -65 to +150 Lead Temperature 1, 6mm (1/16 inch) 260, 5 sec

PAM8610

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, VOLUME, FADE

REF

= +25°C, unless otherwise specified.)

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-0.3 to +16.5 V

0 to +6.0

-0.3 to V

-40 to +125

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°C

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PAM8610

Recommended Operating Conditions (@T

= +25°C, unless otherwise specified.)

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Parameter Rating Unit

Supply Voltage (VDD) Maximum Volume Control Pins,

Input Pins Voltage

7 to 15

0 to +5.0

V

High Level Input Voltage: SD MUTE, FADE 2.0 to 5.0

2.0 to V

DD

V

Low Level Input Voltage: SD 0 to +0.3 MUTE, FADE 0 to +0.3

V

Ambient Operating Temperature -20 to +85 °C

Thermal Information

Parameter Package Symbol Max Unit

= 8Ω

L

18.1

7.6

°C/W

7.0 12 15 V 5 8

10

W

15

0.1 %

mΩ

-60 dB 250 kHz

-80 dB 80 dB

5.0 5.5 V

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Thermal Resistance (Junction to Ambient) QFN6mm*6mm Thermal Resistance (Junction to Case) QFN6mm*6mm

The Exposed PAD must be soldered to a thermal land on the PCB.

θ

JA

θ

JC

Electrical Characteristics (@T

= +25°C, VDD = 12V, RL = 8Ω, unless otherwise specified.)

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Parameter Symbol Test Conditions Min Typ Max Units

Supply Voltage

V

DD

THD+N = 0.1%, f = 1kHz, R THD+N = 1.0%, f = 1kHz, RL = 8Ω

Continuous Output Power

P

THD+N = 10%, f = 1kHz, RL = 8Ω,

O

= 13V

V

DD

THD+N = 0.1%, f = 1kHz, RL = 4Ω (Note 3) Total Harmonic Distortion plus Noise THD+N Quiescent Current Supply Quiescent Current in

Shutdown Mode

Drain-Source On-State Resistance

R

DS(ON)

I

DD

I

SD

Power Supply Ripple Rejection PSRR

Oscillator Frequency

f

OSC

P

= 5W, f = 1kHz, RL = 8Ω

O

No Load 20 30 mA

Shutdown = 0V 4 10 µA

High Side 200 Low Side 200

Total 400

= 12V

V

CC

= 1A

I

O

T

= +25°C

J

1V

Ripple, f = 1kHz,

PP

Inputs AC-Coupled to Ground

R

= 120kΩ, C

OSC

= 220pF Output Integrated Noise Floor VN 20Hz to 22kHz, A-Weighting -90 dB Crosstalk CS

Signal to Noise Ratio SNR Output Offset Voltage

(measured differentially)

|V

OS

|

= 3W, RL = 8Ω, f = 1kHz

P

O

Maximum output at THD+N < 0.5%, f = 1kHz

INN and INP connected together 30 mV

2.5V Bias Voltage V2P5 No Load 2.5 V Internal Analog Supply Voltage

VDD = 7V to 15V

AV

DD

Over Temperature Shutdown OTS 150 °C Thermal Hysteresis OTH 40 °C

Note: 3. Heat sink is required for high power output.

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Typical Performance Characteristics (@T

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PAM8610

= +25°C, VDD = 12V, RL = 8Ω, GV = 24dB, unless otherwise specified.)

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PAM8610

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