ANPEC APA4801KI-TR, APA4801JI-TU, APA4801JI-TR Datasheet

APA4801

Stereo 280mW 8Ω Speaker Driver with Mute

Features

••

•

Operating Voltage

••

Single Supply 3V to 7V Dual Supply ±1.5V to ± 3.5V

••

•

High Signal-to-Noise Ratio 100dB

••

•

High Slew Rate 5V/ µs

••

•

Low Distortion -65dB

••

• Output Power at 10% THD+N

••

into 8Ω 280mW

into 16Ω 160mW

••

• Large Output Voltage Swing

••

• Excellent Power Supply Ripple Rejection

••

• Flexible Mute Function

••

• Integrated Voltage Divider (V

••

nate External Resistors

••

• Low Power Consumption

••

• Short-circuit Elimination

••

• Wide Temperature Range

••

• No Switch ON/OFF Clicks

••

• Available in 8 pin SOP or DIP Package

••

/2) to Elimi-

DD

Applications

••

• Portable Digital Audio

••

•

Personal Computers

••

•

Microphone Preamplifier

••

General Description

The APA4801 is an integrated class AB stereo headphone amplifier contained in an SO-8 or a DIP-8 plastic package with Mute feature . Besides the common Mute feature , the APA4801 further integrates a voltage divider inside the chip . Thus , the external resistors can be eliminated . The device has been primarily developed for portable digital audio applications .

Block Diagram

Out A

Mute

Input A

1

2

3

MUTE

0dB

A +

130k

B +

Ω

130k

BIAS

8

7

6

V

DD

Out B

BIAS

V

4

SS

5

Input B

Ordering Information

APA4801

Handling Code Temp. Range Package Code

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. Rev. A.5 - Apr., 2001

Package Code J : PDIP-8 K : SOP-8 Temp. Range I : - 40 to 85 C Handling Code TU : Tube TR : Tape & Reel

°

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

APA4801

Function Pin Description

Pin Name I/O Function Description

Out A O A channel output pin

Mute I

Input A I A channel input terminal

V

SS

Input B I B channel input terminal

BIAS I Right channel bias input pin

OUT B O B channel output pin

V

DD

Absolute Maximum Ratings

Symbol Parameter Rating Unit

V

DD

t

SC(O)

T T

T

STG

T

V

ESD

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

Supply Voltage 8 V Output Short-circuit Duration, at TA=25°C, P Operating Ambient Temperature range -40 to 85

A

Maximum Junction Temperature 150

J

Storage Temperature Range -65 to +150 Soldering Temperature,10 seconds 260

S

Electrostatic Discharge -3000 to 3000

Chip disable control input, high active and low for normal operating

Power ground pin

Power input pin

tot

=1W

20 S

*1

C

°

C

°

C

°

C

°

V

Thermal Characteristics

Symbol Parameter Value Unit

R

THJA

Electrical Characteristics V

V

DD

VDD=5V

I

DD

V

I(OS)

Copyright  ANPEC Electronics Corp. Rev. A.5 - Apr., 2001

Thermal Res i stance fr om Jun ction to Ambie n t in Free Air

DIP-8

SO-8

=0dBV, VDD=5V, TA=25°C, f=1kHz (unless otherwise noted)

IN

109 210

APA4801Symbol Parameter Test Conditions

Min. Typ. Max.

Power Supply Voltage 2.7 5.5

Supply Current No Load 2.5 mA Input Offset Voltage 5 50 mV

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K/W K/W

Unit

V

APA4801

Electrical Characteristics Cont.

APA4801Symbol Parameter Test Conditions

Min. Typ. Max.

I

Shunt Current 200

SD

Mu te l Mu te In pu t Volta ge 0.8 V

AV1- AV2Differential Channel

-0.5 0 0.5 dB

Volt ag e G ain

ATT Mute Attenuation fIN=1k, VIN =1 Vrms 75 70 dB

AC Characteristics

(THD+N

)/S

P

O

To tal Har moni c Distortion plus Noise to Signal Ratio

=160mW, RL=8Ω, f=1 kHz

P

O

=100mW, RL=16Ω, f=1 k H z

P

O

Output Power (THD+N)/S =0.1%, f=1kHz,

0.05

BW<80kHz RL=8

Ω

RL=16

Ω

P

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

O

170 100

BW<80kHz

280 160

76 dB

PSRR Power Supply

R ejectio n Ratio

S/N Signal to Noise Ratio

RL=8

Ω

RL=16

Ω

C

=4.7 µF,V

B

=200mVrms,

RIPPLE

f=120Hz R

=8

Ωµ

L

VDD=3V

I

Supply Current No Load 2.2 mA

DD

V

Input Offset Voltage 5 m V

I(OS )

I

SD

200

AC Characteristics

I

Shunt Current 150

SD

Mu te l Mu te Inp u t Voltag e 0.8 V

AV1- AV2Differential Channel

-0.5 0 0.5 dB

Volt ag e G ain

ATT Mute Attenuation fIN=1k ,VIN = 0.5Vrms 70 dB

(THD+

N)/S

To tal Har moni c Distortion plus Noise to Signal Ratio

P

=50mW, RL=8Ω, f=1 k H z

O

=25mW, RL=16Ω, f=1 kHz

P

O

0.1

S/N Signal to Noise Ratio

P

Output Power (THD+N)/S=0.1%, f=1kHz,

O

BW<80kHz RL=8

Ω

RL=16

Ω

P

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

O

45 25

BW<80kHz

80 45 76 dB

PSRR Power Supply

R ejectio n Ratio

RL=8

Ω

RL=16

Ω

=4.7µF,V

C

B

f=120Hz

=200m Vrms,

RIPPLE

Unit

µ

mW

Vrm s

µ

Vrm s

µ

mW

A

%

A

%

Copyright  ANPEC Electronics Corp. Rev. A.5 - Apr., 2001

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APA4801

Test and Application Circuit

F

1

µ

V

INB

4.7

F

µ

57

4

V

SS

1µF

V

INA

68

BIAS

0dB

+

B

0dB

+

A

32 1

Input A

Mute

1µF

Out BInput B

BIAS

V

APA4801

MUTE

Out A

220µF

V

100µF

DD

V

MUTE

H : Speaker Action L : Mute on

DD

220µF

100k

Ω

Typical Characteristics

THD+N vs Output Power

10

VDD= 5V

Ω

=8

R

L

1

THD+N (%)

0.1

0.01 10m 500m

f=20Hz

f=20kHz

f=1kHz

200m

Output Power (W)

THD+N vs Output Power

10

VDD= 5V

Ω

=16

R

L

1

f=20Hz

f=20kHz

THD+N (%)

0.1

f=1kHz

0.01 10m 200m

100m

Output Power (W)

Copyright  ANPEC Electronics Corp. Rev. A.5 - Apr., 2001

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APA4801

Typical Characteristics Cont.

THD+N vs Frequency

10

VDD= 5V

=160mW

P

O

Ω

=8

R

L

NO FILTERS

1

THD+N (%)

0.1

0.01 20 20k100 1k 10k

Frequency (Hz)

THD+N vs Frequency

10

VDD= 5V

=100mW

P

O

Ω

=16

R

L

NO FILTERS

1

THD+N (%)

0.1

0.01 20 20k100 1k 10k

Frequency (Hz)

THD+N vs Output Power

10

VDD= 3V

Ω

=8

R

L

1

f=20kHz

THD+N (%)

0.1

0.01 10m 100m50m

f=20Hz

f=1kHz

Output Power (W)

THD+N vs Output Power

10

VDD= 3V

Ω

=16

R

L

1

THD+N (%)

0.1

0.01 10m 100m50m

f=20kHz

f=20Hz

Output Power (W)

f=1kHz

Copyright  ANPEC Electronics Corp. Rev. A.5 - Apr., 2001

www.anpec.com.tw5