ANPEC APA4800 handbook

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APA4800

APA4800

Stereo 290mW 8Ω Speaker Driver

Features

O perating Voltage

 

Single Supply

3V to 7V

 

Dual Supply

± 1.5V to ± 3.5V

High Signal-to-Noise Ratio

100dB

High Slew Rate

5V/ µ s

Low Distortion

-65dB

Output Power at 10% THD+N

into 8Ω !!!!!!!!!!!!!! 290mW into 16Ω !!!!!!!!!!!!!! 190mW

Large Output Voltage Swing

Excellent Power Supply Ripple Rejection

Low Power Consumption

Short-circuit Elimination

Wide Temperature Range

No Switch ON/OFF Clicks

Available in 8 pin SOP or DIP Package

Applications

Portable Digital Audio

Personal Computers

Microphone Preamplifier

Gereral Description

The APA4800 is an integrated class AB stereo headphone amplifier contained in an SO-8 or a DIP-8 plastic package . The APA4800 is capable of delivering 290mW of max . output power to an 8Ω load with less than 10% (THD+N) from a 5V power supply . The device has been primarily developed for portable digital audio applications .

Ordering Information

APA4800

Handling Code

Temp. Range

Package Code

Package Code

J : PDIP - 8

K : SOP - 8

Temp. Range

I : - 40 to 85 °C

Handling Code

TU : Tube

TR : Tape & Reel

Block Diagram

Out A

1

8

VDD

 

Inverting Input A

2

7

Out B

Non-inverting Input A

- +

+ -

Inverting Input B

3

6

VSS

4

5

Non-inverting Input B

APA4800

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders.

Copyright ANPEC Electronics Corp.

1

www.anpec.com.tw

Rev. A.2 - Apr., 2001

APA4800

Absolute Maximum Ratings

Symbol

Parameter

Rating

Unit

VDD

Supply Voltage

5

V

TSC (O)

Output Short-circuit Duration, at TA=25° C, PTOT=1W

20

S

TA

Operating Ambient Temperature range

-40 to 85

° C

TJ

Maximum Junction Temperature

150

° C

TSTG

Storage Temperature Range

-65 to +150

° C

TS

Soldering Temperature,10 seconds

260

° C

V

Electrostatic Discharge

-3000 to 3000 *1

V

ESD

 

 

 

Note: *1. Human body model : C=100pF, R=1500, 3 positive pulses plus 3 negative pulses

 

Thermal Characteristics

 

 

Symbol

Parameter

Value

Unit

RTHJA

Thermal Resistance from Junction to Ambient in Free Air

 

 

 

DIP-8

109

K/W

 

SO-8

210

K/W

 

 

 

 

Electrical Characteristics TA=25°C, f=1kHz( unless otherwise noted)

Symbol

Parameter

Test Conditions

 

APA4800

Unit

 

 

 

Min.

 

Typ.

 

 

Max.

 

VDD

Power Supply Voltage

 

2.7

 

 

 

5.5

V

VDD=5V

 

 

 

 

 

 

 

 

 

IDD

Supply Current

No Load

 

 

2.5

 

 

 

mA

VI(OS)

Input Offset Voltage

 

 

 

5

 

50

mV

AC Characteristics

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(THD+N)/S

Total Harmonic Distortion

PO =200mW, RL=8Ω , f=1kHz

 

 

0.1

 

 

 

%

 

plus Noise to Signal

PO =120mW, RL=16Ω , f=1kHz

 

 

0.05

 

 

 

 

 

Ratio

 

 

 

 

 

 

 

 

PO

Output Power

(THD+N)/S=0.2%, f=1kHz

 

 

 

 

 

 

mW

 

 

RL=8Ω

 

 

210

 

 

 

 

 

 

RL=16Ω

 

 

140

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PO

Output Power

(THD+N)/S=10%, f=1kHz

 

 

 

 

 

 

mW

 

 

RL=8Ω

 

 

290

 

 

 

 

 

 

RL=16Ω

 

 

190

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PSRR

Power Supply Rejection

CB=2.2 µ F,VRIPPLE=200mVrms,

 

 

55

 

 

 

dB

 

Ratio

f=120Hz

 

 

 

 

 

 

 

S/N

Signal to Noise Ratio

RL=8Ω

 

 

20

 

 

 

µ Vrms

 

 

 

 

 

 

 

 

 

 

Copyright ANPEC Electronics Corp.

2

 

 

 

www.anpec.com.tw

Rev. A.2 - Apr., 2001

 

 

 

 

 

 

 

 

APA4800

Electrical Characteristics Cont. TA=25°C, f=1kHz( unless otherwise noted)

Symbol

Parameter

Test Conditions

 

APA4800

 

Unit

 

 

 

Min.

 

 

Typ.

 

Max.

 

VDD=3V

 

 

 

 

 

 

 

 

 

IDD

Supply Current

No Load

 

 

2.2

 

 

mA

VI(OS)

Input Offset Voltage

 

 

 

5

 

 

mV

AC Characteristics

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(THD+N)/S

Total Harmonic Distortion

PO =50mW, RL=8Ω , f=1kHz

 

 

0.15

 

 

%

 

plus Noise to Signal

PO =40mW, RL=16Ω , f=1kHz

 

 

 

 

 

 

 

 

Ratio

 

 

 

 

 

 

 

 

PO

Output Power

(THD+N)/S=0.2%, f=1kHz

 

 

 

 

 

 

mW

 

 

RL=8Ω

 

 

 

60

 

 

 

 

 

 

 

 

 

 

 

 

RL=16Ω

 

 

45

 

 

 

 

 

 

 

 

 

 

 

 

 

PO

Output Power

(THD+N)/S=10%, f=1kHz

 

 

 

 

 

 

mW

 

 

RL=8Ω

 

 

90

 

 

 

 

 

RL=16Ω

 

 

65

 

 

 

 

 

 

 

 

 

 

 

 

 

Test And Application Circuits

VDD

 

 

220pF

 

 

 

 

 

 

 

 

 

 

 

 

220µ F

 

 

 

15kΩ

 

VOUTA

 

 

 

 

 

 

 

 

1

8

RL

2.2µ F

 

2

-

 

 

VINA

 

 

 

15kΩ

 

 

 

 

 

+

 

 

 

 

3

 

 

 

 

APA4800

 

 

VREF

 

 

 

100µ F

 

 

 

 

 

typ.1/2VDD

 

5

- +

 

 

VINB

15kΩ

6

 

 

2.2µ F

 

 

 

 

7

4

 

 

 

 

 

 

 

 

15kΩ

 

VOUTB

 

 

 

 

220µ F

 

 

 

 

 

 

 

 

220pF

 

RL

 

 

 

 

 

Copyright ANPEC Electronics Corp.

3

www.anpec.com.tw

Rev. A.2 - Apr., 2001

 

 

ANPEC APA4800 handbook

APA4800

Typical Characteristics

THD+N vs Output Power

 

10

 

 

 

VDD= 5V

 

 

 

RL=8Ω

 

 

 

AV= -1

 

 

 

BW<80kHz

 

 

 

1

f=20Hz

 

 

 

 

(%)

 

f=20kHz

 

THD+N

 

 

0.1

 

 

 

 

 

 

 

f=1kHz

 

 

0.0110m

100m

500m

Output Power (W)

THD+N vs Frequency

 

10

 

 

 

 

 

VDD= 5V

 

 

 

 

PO=200mW

 

 

 

 

RL=8Ω

 

 

 

 

(%)

NO FILTERS

 

 

 

1

 

 

 

 

 

 

 

 

 

THD+N

 

 

AV= -2

 

 

 

 

AV= -5

 

 

 

0.1

 

 

 

 

 

 

 

AV= -1

 

 

 

0.01

 

 

 

 

 

20

100

1k

10k

20k

Frequency (Hz)

THD+N vs Output Power

 

10

 

 

 

VDD= 5V

 

 

 

RL=16Ω

 

 

 

AV= -1

 

 

 

BW<80kHz

 

 

 

1

f=20Hz

 

(%)

 

f=20kHz

 

THD+N

 

 

0.1

 

 

 

 

 

 

 

f=1kHz

 

 

0.0110m

100m

300m

Output Power (W)

THD+N vs Frequency

 

10

 

 

 

 

VDD= 5V

 

 

 

PO=120mW

 

 

 

RL=16Ω

 

 

 

 

NO FILTERS

 

 

(%)

1

 

 

 

 

 

 

 

THD+N

 

AV= -2

 

 

 

AV= -5

 

 

 

 

 

 

 

0.1

 

 

 

 

 

AV= -1

 

 

 

0.01 20

100

1k

10k 20k

Frequency (Hz)

Copyright ANPEC Electronics Corp.

4

www.anpec.com.tw

Rev. A.2 - Apr., 2001

 

 

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