ANPEC APA0710, APA0711 Service Manual

APA0710/0711

1.1W Mono Low-Voltage Audio Power Amplifier

Features General Description

• Operating Voltage : 2.6V-5.5V

• APA0710 Compatible with TPA711

APA071 1 Compatible with TPA751

• Bridge -Tied Load (BTL) or Single-Ended (SE)

Mode s Operation (for APA0710 only)

• Supply Curren t

– IDD=1.3mA at VDD=5V ,BTL mode – IDD=0.9mA at VDD=3.3V ,BTL mode

• Low Shutdown Current

– IDD=0.1µA

• Low Distortion

– 630mW, at VDD=5V, BTL, RL=8Ω THD +N=0.15% – 280mW, at VDD=3.3V, BTL, RL=8Ω THD +N=0.15%

• Output Pow er

at 1% TH D+N – 900mW, at VDD=5V, BTL, RL=8Ω – 400mW, at VDD=3.3V, BTL, RL=8Ω

at 10% THD+N –1.1W at VDD=5V, BTL, RL=8Ω –480mW at VDD=3.3V, BTL, RL=8Ω

The APA0710 is a bridged-tied load (BTL) or singledended (SE) aud io power amplifier developed especially for low-voltage applications where internal speakers and external earphone operation are required. The APA0 711 is a only BTL audio power amplifier developed especially for low-voltage applications where internal spea kers are required. Operating with a 5V supply, the APA0710/1 can deliver 1.1W of continuous power into a BTL 8Ω load at 10% THD+N througho ut voice band frequencies. Altho ugh this device is characterized out to 20kHz,its operatio n is optimized for narrow band a pplications such as wireless communications. The BTL conf iguration eliminates the need for external coup ling capacitors on the output in most applications, which is particularly important for small battery-powered equip ment. A unique feature of the APA0710 is that it allows the a mplifier to switch from BTL to SE on the fly when an earphone drive is required. This eliminates complica ted mechanical switching or auxiliary devices just to drive the external load. This de vice features a shutd own mode for power-sensitive applications with sp ecial depop circuitry to eliminate speaker noise when exiting shutdow n mode. The APA0710/1 are available in an 8-pin SOP and 8-pin MSOP-P with enhanced thermal pad.

• Depop Circuitry Integrated

• Thermal Shutdown Protection and

Over Current Protection Circuitry

• High supply voltage ripple rejection

• Surface-Moun t Packaging

– 8 pin MSOP-P (with e nhanced thermal pad)

pow er package available

– SOP-8 package

Applications

• Mobil Phones

• PDAs

• Digital Camera

• Porta ble Electronic Devices

• Lead Free Available (RoHS Compliant)

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 - Oct., 2005

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APA0710/0711

Pin Description

Shutdown

Bypass

SE/BTL

Shutdown

Bypass

SE/BTL

APA0710

1

2

3

4

IN

8

7

6

5

VO-

GND

VDD

VO+

Shutdown

Bypass

IN+

IN-

SOP-8

APA0710

1

2

3

4

IN

8

7

6

5

VO-

GND

VDD

VO+

Shutdown

Bypass

IN+

IN-

MSOP-8-P

1

2

3

4

1

2

3

4

APA0711

SOP-8

APA0711

MSOP-8-P

8

7

6

5

8

7

6

5

VO-

GND

VDD

VO+

VO-

GND

VDD

VO+

NC = N o internal connection

= Th ermal Pad

(con nected to GND plane for better heat dissipation)

Ordering and Marking Information

APA0710/1

Lead Free Code Handling Code Temp. Range Package Code

APA0710/1 K :

APA0710/1 XA :

APA0710/1

XXXXX

A0710/1

XXX XX

Note: AN PEC lead-free products contain molding compo unds/die attach ma terials and 100% matte tin plate termination finish; which are fully compliant with RoHS and compatible with both SnPb and lead-free soldiering op erations. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J STD-020C

fo r MSL classification at lead-free peak reflow temperature.

Copyright  ANPEC Electronics Corp. Rev. A.5 - Oct., 2005

Package Code K : SOP-8 XA : MSOP-8-P Temp. Range I : -40 to 85 C

°

Handling Code TR : Tape & Reel Lead Free Code L : Lead Free Device Blank : Original Device

XXXXX - Date Code

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APA0710/0711

Block Diag ram

Audio

Input

From System Control From HP Jack

RI

CI

CB

RF

4

IN

Bypass

2

1

Shutdown

3

SE/BTL

VDD/2

Bias

Control

APA0710

VDD

6

VDD

Cs

_

5

Vo+

+

CC

_

Vo-

8

+

7

GND

RF

Audio

Input

From System Control

Copyright  ANPEC Electronics Corp. Rev. A.5 - Oct., 2005

CI

RI

4

3

2

CB

1

IN-

IN+

Bypass

Shutdown

Bias

Control

VDD/2

_

+

_

+

APA0711

VDD

Vo+

Vo-

GND

6

5

8

7

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VDD

Cs

APA0710/0711

Absolute Maximum Ratings

(Over operating free-air temperature range un less otherwise noted.)

Symbol Parameter Rating Unit

VDD Supply Voltage -0.3 to 6 V

VIN

TA Operating Ambient Temperature Range -40 to 85

TJ Maximum Junction Temperature Internally Limited*1

T

Storage Temperature Range -65 to +150

STG

TS Soldering Temperature, 10 seconds 260

V

Electrostatic Discharge -2000 to 2000*2 V

ESD

PD Power Dissipation Internally Limited W

Note:

1.APA0710/1 integrated internal thermal shutdown protection when junction temperature ramp up to 170°C

2.Human body model: C=100pF, R=1500Ω, 3 positives pulses plus 3 negative pulses

3.Machine model: C=200pF, L=0.5µF, 3 positive pulses plus 3 negative pulses

Input Voltage Range, Shutdown, SE/BTL

-0.3 to VDD+0.3 V

Recommende d Operating Conditions

Symbol

VDD Supply Voltage

VIH High-Level Voltage

VIL Low-Level Voltage

Parameter Test Conditions Min. Max. Unit

Shutdown, Shutdown SE/BTL Shutdown, Shutdown SE/BTL

2.6 5.5

2.2

0.9VDD

0.4

0.9VDD-1

°C °

C

°C °C

V

Thermal Characteristics

Symbol Parameter Value Unit

R

Thermal Resistance from Junction to Ambient in Free Air

THJA

MSOP-8-P*

SOP-8

* 3.42 in2 printed c ircuit board with 20z trace and copper through 6 vias of 12mil diameter vias. Th e thermal pad on the MSOP-8-P package with solder on the printed circuit board.

Copyright  ANPEC Electronics Corp. Rev. A.5 - Oct., 2005

50

160

°

C/W

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APA0710/0711

Electrical Characteristics

Electrical Characteristics at Spe cified Free - Air Temperature

V

= 3.3V, TA = 25 °C (unless otherwise noted)

DD

Symbol

Parameter Test Conditions

APA0710/1

Min. Typ. Max.

VOO Output Offset Voltage

IDD Supply Current

I

DD(SD)

Supply Current, Shutdown Mode

RL = 8Ω, RF = 10kΩ BTL mode, RF = 10kΩ SE mode, RF = 10kΩ

RF = 10kΩ

20 mV

0.9 1.8

0.55 1.1

0.1 2

Shutdown, VI = VDD 1 Shutdown, VI = VDD 1 |IH| SE/BTL, VI = VDD

1 Shutdown, VI = 0V 1 Shutdown, VI = 0V 1 |IL| SE/BTL, VI = 0V 1

Operating characteristic, V

PO Output Power

THD+N

Bom

Total Harmonic Distortion Plus Noise Maximum Output Power Bandwidth

(Note 1)

= 3.3V, TA = 25°C, RL = 8Ω

DD

THD = 1%, BTL mode, RL = 8Ω THD = 1%, SE mode, RL = 32Ω

PO = 280mW, BTL mode, RL = 8Ω Gain = 2, THD+N = 2% 20 kHz

400

40

0.15

B1 Unity-Gain Bandwidth Open Loop 2 MHz

PSRR

Power Supply Rejection

(Note1)

Ratio

Vn Noise Output Voltage

TWU Wake-up time

CB = 1µF, BTL mode, RL = 8Ω CB = 1µF, SE mode, RL = 8Ω Gain = 1, CB = 0.1µF CB = 1µF

74

61

28

380 ms

VDD= 5V, TA= 25 °C (unless otherwise noted)

Unit

mA

µA

mW

%

dB

µV(rms)

Symbol

Parameter Test Conditions

Unit

Min. Typ. Max.

APA0710/1

VOO Output Offset Voltage

IDD Supply Current

I

DD(SD)

Supply Current , Shutdown Mode

RL = 8Ω, RF = 10kΩ BTL mode, RF = 10kΩ SE mode, RF = 10kΩ

RF = 10kΩ

20 mV

1.3 2.6 mA

0.75 1.5

0.1 2 µ

A

Copyright  ANPEC Electronics Corp. Rev. A.5 - Oct., 2005

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APA0710/0711

Shutdown mode control signal input, place entire IC in shutdown mode

When SE/BTL is held low, the APA0710 is in BTL mode. When SE/BTL is

ut in SE

Ele ctrical Characteristics(Cont.)

Electrical Chara cteristics at Specified Free - Air Temperature (Cont.)

VDD= 5V, TA= 25°C (unless otherwise noted)

Symbol

Parameter Test Conditions

Min. Typ. Max.

Shutdown, VI = VDD 1 Shutdown, VI = VDD 1 |IH| SE/BTL, VI = VDD 1 Shutdown, VI = 0V 1

APA0710/1

|IL|

Shutdown, VI = 0V 1 SE/BTL, VI = 0V 1

Operating characteristic, V

PO

THD+N

Bom

Output Power Total Harmonic Distortion

Plus Noise

(Note 1)

Maximum Output Power Bandwidth

= 5V, TA = 25°C, RL = 8Ω

DD

(Note 1)

THD = 1%, BTL mode, RL = 8Ω THD = 1%, SE mode, RL = 32Ω

PO = 630mW, BTL mode, RL = 8Ω

Gain = 2, THD+N = 2% 20 kHz

900 94

0.15

B1 Unity-Gain Bandwidth Open Loop 2 MHz

PSRR

Power Supply Rejection

(Note1)

Ratio

Vn Noise Output Voltage

Twu Wake-up time

CB = 1µF, BTL mode, RL = 8Ω CB = 1µF, SE mode, RL = 8Ω Gain = 1, CB = 0.1µF CB = 1µF

74 61 28 400 ms

Unit

µ

mW

%

dB

µ

V(rms)

A

Note1 : Output po wer is measured at the output terminals of device at f=1KHz.

Pin Description

APA0710

Name No

Shutdown 1 I

Bypass 2 I Bypass pin

SE/BTL 3 I

IN 4 I In is the audio input terminal

VO+ 5 O VO+ is the positive output for BTL and SE modes

VDD 6 Supply voltage input pin

GND 7 Ground connection for circuitry

VO- 8

Copyright  ANPEC Electronics Corp. Rev. A.5 - Oct., 2005

I/O

Description

when held high.

held high, the APA0710 is in SE mode

VO- is the negative output in BTL mode and a high-impedance outp

O

mode

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APA0710/0711

Shutdown mode control signal input, place entire IC in shutdown mode

Pin Description

APA0711

Name No

Shutdown 1

I/O

I

when held low.

Description

Bypass 2 I Bypass pin

IN+ 3 I IN+ is the non-inverting input. IN+ is typically tied to the Bypass terminal.

IN- 4 I IN- is the inverting input. IN- is typically used as the audio input terminal.

VO+ 5 O VO+ is the positive BTL output.

VDD 6 Supply voltage input pin.

GND 7 Ground connection for circuitry.

VO- 8 O VO- is the negative BTL output.

Typ ical Application Circuit

for APA0710 Application

RF

Audio

Input

CI

0.47µ F

RI

10kΩ

CB

1 µF

4

2

IN

Bypass

VDD/2

_

+

VDD

Vo+

6

CC

330µ F

5

1k Ω

VDD

Cs

1µF

_

1

From System Control

0.1µF

VDD

Copyright  ANPEC Electronics Corp. Rev. A.5 - Oct., 2005

100kΩ

Shutdown SE/BTL

3

Bias

Control

+

Vo-

GND

8

7

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APA0710/0711

Typ ical Application Circuit (Cont.)

for APA0711 Application

RF

10 kΩ

Audio

Input

0.47µF

CI

RI

10kΩ

CB

1 µ F

4

3

2

IN-

IN+

Bypass

_

+

_

VDD

Vo+

Vo-

6

5

8

VDD

CsVDD/2

1 µ F

From System Control

1

Shutdown

for APA0711 Differential Input Application

RF

10 kΩ

Audio Input-

Audio

Input+

CI

0.47µF

CI

0.47µF

RI

10kΩ

RI

10kΩ

RF

10 kΩ

CB

1 µ F

4

3

2

IN-

IN+

Bypass

Bias

Control

+

7

GND

VDD

6

_

Vo+

5

VDD

CsVDD/2

1 µ F

+

_

Vo-

8

From System Control

Copyright  ANPEC Electronics Corp. Rev. A.5 - Oct., 2005

1

Shutdown

Bias

Control

+

7

GND

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APA0710/0711

Typ ical Characteristics

PSRR vs. Freque ncy PSRR vs. Freque ncy

+0

No-Capa citor

-20

+0

No-Capa citor

-20

-40

-60

-80

Ripple Rejection Ration (dB)

-100

CB=1 µF

VDD=3.3V RL=8Ω SE

Frequency (H z) Frequency (H z)

PSRR vs. Freque ncy

+0

T

RL=8Ω CB=1 µF

BTL

-20

-40

-60

VDD=3.3V

-80

Ripple Rejection Ration (dB)

-100 20 20k100 1k 10k

VDD=5V

Frequency (H z)

CB=0.1µF

CB=2.2µF

-40

-60

-80

Ripple Rejection Ration (dB)

20k10k1k10020

-100

CB=1 µF

VDD=5V RL=8Ω SE

CB=0.1µF

CB=2.2µF

20k10k1k10020

Supply Current vs. Supply Voltage

1600

RF=10kΩ

1400

1200

BTL(SE/BTL=0.1VDD)

1000

800

600

400

Supply Current (µA)

SE(SE/BTL=0.9VDD)

200

0

2.5 3 3.5 4 4.5 5 5.5

Supply Voltage(V)

Copyright  ANPEC Electronics Corp. Rev. A.5 - Oct., 2005

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