Diodes PAM8010 User Manual

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PAM8010

3W STEREO CLASS-D with

DC VOLUME, HEADPHONE and POWER LIMIT

Description

The PAM8010 is a 3W, Class-D audio amplifier with headphone

amplifier. Advanced 64-step DC volume control minimizes external

components and allows speaker volume control and headphone

volume control.

Integrated power limit technology which suppresses the output signal

clip automatically due to the over level input signal. It offers low

THD+N to produce high-quality sound reproduction.

PAM8010 has an additional noise reduction circuit which achieves

12dB nosie attenuation. This circuit may help eliminate external

filtering, thereby saving the board space and component cost.

The PAM8010 features SCP (short circuit protection), OTP and

thermal shutdown.

The PAM8010 is available in SSOP-24 and SOP-24 package.

Features

 3W Output at 10% THD with a 4 Load and 5V Power Supply

 Filterless, Low Quiescent Current and Low EMI

 Low THD+N

 Power Limit Function to Protect Speaker when Occuring Large

Input, 5% Power Limit Accuracy

 64-Step DC Volume Control from -45dB to +24dB

 Headphone Output Function

 12dB Effective Noise Reduction

 Superior Low Noise: 30uV

 Minimize Pop/Clip Noise

 High Efficiency up to 90%

 Auto Recovery Short Circuit Protection

 Thermal Shutdown

 Pb-Free Package

PAM8010

Document number: DSxxxxx Rev. 1 - 0

Pin Assignments

Applications

 LCD Monitors / TV Projectors

 Notebook/All-in-one Computers

 Portable Speakers

 Portable DVD Players, Game Machines

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Typical Applications Circuit

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PAM8010

Pin Descriptions

Number

1 -OUT_L Left Channel Negative Output

2 PGNDL Left Channel Power GND

3 +OUT_L Left Channel Positive Output

4 PVDDL Left Channel Power Supply

5 SHDN Full Chip Shutdown Control Input (active low), Pull-Up

6 AVDD Analog VDD

7 VREF Reference Voltage Both for DC Volume Control and Power Limit Section

8 PL Connect a Resistor Divider from VREF to GND for Power Limit Setting

9 EAR IN L Left Earphone Input

10 INL Left Channel Input

11 VOL Apply DC Voltage at this Pin Set the Gain Both of Class-D and Class-AB

12 EAR OUT L Left Earphone Output (Non-Inverting)

13 EAR OUT R Right Earphone Output(Non-Inverting)

14 V2P5 Internal Analog Reference, Connect a Bypass Capacitor from V2P5 to GND

15 IN R Right Channel Input

16 EAR IN R Right Earphone Input

17 MUTE_AB Mute Control of Class-AB Section (active low), Pull-Up

18 VTH Connect a Resistor from VTH to GND for Noise Threshold Setting

19 AGND Analog GND

20 MUTE_D Mute Control of Class-D Section (active high), Pull-Up

21 PVDDR Right Channel Power Supply

22 +OUT_R Right Channel Positive Output

23 PGNDR Right Channel Power GND

24 -OUT_R Right Channel Negative Output

PAM8010

Document number: DSxxxxx Rev. 1 - 0

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Function

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Functional Block Diagram

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PAM8010

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 6.0

Input Voltage

Operation Junction Temperature -40 to +125

Storage Temperature -65 to +150

Soldering Temperature 300, 5 sec

Recommended Operating Conditions (@T

Parameter Rating Unit

Supply Voltage Range 2.5 to 5.5 V

Ambient Temperature Range -20 to +85 °C

Junction Temperature Range -20 to +125 °C

PAM8010

Document number: DSxxxxx Rev. 1 - 0

= +25°C, unless otherwise specified.)

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-0.3 to V

+0.3

DD

= +25°C, unless otherwise specified.)

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V

°C

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PAM8010

Thermal Information

Parameter Package Symbol Max Unit

= 8Ω

= 200mV

PP

= 200mV

PP

96

°C/W

2.5 5.5 V

10 15 mA

Ω

1.55 1.70

2.85 3.0

0.08

W

%

70 dB

-95 dB

85 90 %

80 83 %

µV

60 mW

0.02 %

80 dB

-95 dB

µV

7 10 mA

9 10 mA

1 µA

V

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Thermal Resistance (Junction to Ambient)

SSOP-24

SOP-24 79.2

θ

JA

Electrical Characteristics (@T

= +25°C, VDD = 5V, Gain = Maximum, RL = 8Ω, unless otherwise specified.)

A

Parameter Symbol Test Conditions Min Typ Max Units

Class D Stage

Supply Voltage Range

Quiescent Current

Output Offset Voltage

Drain-Source On-State Resistance

Output Power

V

R

DS(ON)

I

P

Total Harmonic Distortion Plus Noise THD+N

Power Supply Ripple Rejection PSRR

Channel Separation CS

Oscillator Frequency

f

OSC

Efficiency η

Noise

V

DD

No Load

Q

No Load 10 30 mV

OS

IDS = 0.5A

THD+N = 10%

O

f = 1kHz

R

= 8Ω, PO = 0.85W, f = 1KHz

L

P MOSFET 0.21

N MOSFET 0.17

R

L

RL = 4Ω

RL = 4Ω, PO = 1.75W, f = 1KHz

Input AC-GND, f = 1KHz, V

P

= 1W, f = 1KHz

O

200 250 300 kHz

P

= 1.7W, f =1 kHz, RL = 8Ω

O

PO = 3.0W, f =1 kHz, RL = 4Ω

N

Input AC-GND

A-Weighting 60

No A-Weighting 80

Signal Noise Ratio SNR f = 20 – 20kHz, THD = 1% 95 dB

Earphone Stage

Output Offset Voltage

Output Power

V

P

Total Harmonic Distortion Plus Noise THD+N

Power Supply Ripple Rejection PSRR

Channel Separation CS

Noise

V

No Load 2.45 2.50 2.55 V

OS

THD+N = 1%, RL = 32Ω, f = 1KHz

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R

= 32Ω, PO = 10mW, f = 1kHz

L

Input AC-GND, f = 1kHz, V

V

= 1V

O

Input

N

AC-GND

, f = 1kHz

RMS

A-Weighting 20

No A-Weighting 35

Signal Noise Ratio SNR f = 20 – 20kHz, THD = 1% 95 dB

Control Section

Mute Current

Mute Class-D Earphone Current

Mute Class AB EarphoneCurrent

Shutdown Current

Logic Input High

Logic Input Low

I

MUTE_D = VDD, MUTE_AB = GND

MUTE

I

MUTE_D = VDD, MUTE_AB = GND

MUTE_D

I

MUTE_D = VDD, MUTE_AB = GND

MUTE_AB

I

SHDN

V

IH

V

IL

V

= 0V

SHDN

1.4

0.6

Over Temperature Protection OTP 150 °C

Over Temperature Hysteresis OTH 40 °C

PAM8010

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Typical Performance Characteristics (@T

Class-D Output

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PAM8010

= +25°C, VDD = 5V, RL = 8Ω, GV = 24dB, unless otherwise specified.)

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PAM8010

Document number: DSxxxxx Rev. 1 - 0

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Typical Performance Characteristics (cont.) (@T

Class-D Output

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PAM8010

= +25°C, VDD = 5V, RL = 8Ω, GV = 24dB, unless otherwise specified.)

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PAM8010

Document number: DSxxxxx Rev. 1 - 0

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