ANPEC APA0710, APA0711 service manual

APA0710/0711

1.1W Mono Low-Voltage Audio Power Amplifier

Features

∙Operating Voltage : 2.6V-5.5V

∙APA0710 Compatible with TPA711 APA0711 Compatible with TPA751

∙Bridge-Tied Load (BTL) or Single-Ended (SE) Modes Operation (for APA0710 only)

∙Supply Current

–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 Power at 1% THD+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

∙Depop Circuitry Integrated

∙Thermal Shutdown Protection and Over Current Protection Circuitry

∙High supply voltage ripple rejection

∙Surface-Mount Packaging

–8 pin MSOP-P (with enhanced thermal pad) power package available

–SOP-8 package

∙Lead Free Available (RoHS Compliant)

General Description

The APA0710 is a bridged-tied load (BTL) or singledended (SE) audio power amplifier developed especially for low-voltage applications where internal speakers and external earphone operation are required. The APA0711 is a only BTL audio power amplifier developed especially for low-voltage applications where internal speakers 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 throughout voice band frequencies. Although this device is characterized out to 20kHz,its operation is optimized for narrow band applications such as wireless communications. The BTL configuration eliminates the need for external coupling capacitors on the output in most applications, which is particularly important for small battery-powered equipment. A unique feature of the APA0710 is that it allows the amplifier to switch from BTL to SE on the fly when an earphone drive is required. This eliminates complicated mechanical switching or auxiliary devices just to drive the external load. This device features a shutdown mode for power-sensitive applications with special depop circuitry to eliminate speaker noise when exiting shutdown mode. The APA0710/1 are available in an 8-pin SOP and 8-pin MSOP-P with enhanced thermal pad.

Applications

∙Mobil Phones

∙PDAs

∙Digital Camera

∙Portable Electronic Devices

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.

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Rev. A.5 - Oct., 2005

APA0710/0711

Pin Description

APA0710

APA0711

Shutdown 1

VO-

1

VO-

8

Shutdown

8

Bypass 2

7

GND

Bypass 2

7

GND

SE/BTL

3

6

VDD

IN+ 3

6

VDD

IN 4

VO+

IN- 4

5

VO+

5

SOP-8

APA0710

SOP-8

APA0711

Shutdown 1

8

VO-

Shutdown 1

8

VO-

Bypass 2

GND

Bypass 2

7

GND

7

IN+ 3

VDD

SE/BTL

3

6

VDD

6

IN- 4

VO+

IN 4

5

VO+

5

MSOP-8-P

MSOP-8-P

NC = No internal connection

=Thermal Pad

(connected to GND plane for better heat dissipation)

Ordering and Marking Information

APA0710/1

Package Code

K : SOP-8

XA : MSOP-8-P

Lead Free Code

Temp. Range

I : -40 to 85 °C

Handling Code

Handling Code

Temp. Range

TR : Tape & Reel

Package Code

Lead Free Code

L : Lead Free Device Blank : Original Device

APA0710/1 K :

APA0710/1

XXXXX - Date Code

XXXXX

A0710/1

APA0710/1 XA :

XXX

XXXXX - Date Code

XX

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

for MSL classification at lead-free peak reflow temperature.

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APA0710/0711

Block Diagram

	RF				VDD	6	VDD
Audio
Input	RI				VDD/2		Cs
		4	IN		_
					Vo+	5
	CI	2	Bypass		+		CC
	CB
					_
					Vo-	8
From System Control		1	Shutdown		+
				Bias		7
From HP Jack					GND
		3	SE/BTL

				Control
					APA0710
	R F				VDD	6	VDD
Au d i o
In p u t	R I				VDD /2		C s
		4	IN -		_	5
					Vo+
C I		3	IN +		+
		2	B y p a s s
	C B
					_
					Vo-	8
					+
From S ys te m C o n t r o l		1	S h u t d o w n	B i a s	G N D	7
				C o n t r o l
					A P A 0 7 1 1

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Rev. A.5 - Oct., 2005

APA0710/0711

Absolute Maximum Ratings

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

Symbol	Parameter			Rating	Unit
VDD	Supply Voltage			-0.3 to 6	V
VIN				-0.3 to VDD+0.3	V
	Input Voltage Range, Shutdown, SE/BTL
TA	Operating Ambient Temperature Range			-40 to 85	°C
TJ	Maximum Junction Temperature			Internally Limited*1	°C
TSTG	Storage Temperature Range			-65 to +150	°C
TS	Soldering Temperature, 10 seconds			260	°C
VESD	Electrostatic Discharge			-2000 to 2000*2	V
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=1500W, 3 positives pulses plus 3 negative pulses

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

Recommended Operating Conditions

Symbol

Parameter

Test Conditions

Min.

Max.

Unit

VDD

Supply Voltage

2.6

5.5

V

Shutdown,

2.2

VIH

High-Level Voltage

Shutdown

V

0.9VDD

SE/BTL

Shutdown,

0.4

VIL

Low-Level Voltage

Shutdown

V

0.9VDD-1

SE/BTL

Thermal Characteristics

Symbol

Parameter

Value

Unit

RTHJA

Thermal Resistance from Junction to Ambient in Free Air

MSOP-8-P*

50

°C/W

SOP-8

160

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

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APA0710/0711

Electrical Characteristics

Electrical Characteristics at Specified Free - Air Temperature

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

Symbol

Parameter

Test Conditions

APA0710/1

Unit

Min.

Typ.

Max.

VOO

Output Offset Voltage

RL = 8Ω, RF = 10kΩ

20

mV

IDD

Supply Current

BTL mode, RF = 10kΩ

0.9

1.8

mA

SE mode, RF = 10kΩ

0.55

1.1

IDD(SD)

Supply Current,

RF = 10kΩ

0.1

2

μA

Shutdown Mode

Shutdown, VI = VDD

1

μA

|IH|

VI = VDD

1

Shutdown,

VI = VDD

1

SE/BTL,

Shutdown, VI = 0V

1

|IL|

VI = 0V

1

μA

Shutdown,

VI = 0V

SE/BTL,

1

Operating characteristic, VDD = 3.3V, TA = 25°C, RL = 8Ω

PO

Output Power (Note 1)

THD = 1%, BTL mode, RL = 8Ω

400

mW

THD = 1%, SE mode, RL = 32Ω

40

THD+N

Total Harmonic Distortion

PO = 280mW, BTL mode, RL = 8Ω

0.15

%

Plus Noise (Note 1)

Bom

Maximum Output Power

Gain = 2, THD+N = 2%

20

kHz

Bandwidth

B1

Unity-Gain Bandwidth

Open Loop

2

MHz

PSRR

Power Supply Rejection

CB = 1μF, BTL mode, RL = 8Ω

74

dB

Ratio (Note1)

CB = 1μF, SE mode, RL = 8Ω

61

Vn

Noise Output Voltage

Gain = 1, CB = 0.1μF

28

μV(rms)

TWU

Wake-up time

CB = 1μF

380

ms

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

Symbol	Parameter	Test Conditions		APA0710/1			Unit
			Min.		Typ.	Max.
VOO	Output Offset Voltage	RL = 8Ω, RF = 10kΩ				20	mV
		Ω			1.3	2.6
IDD	Supply Current	BTL mode, RF = 10k					mA
		SE mode, RF = 10kΩ			0.75	1.5
IDD(SD)	Supply Current ,	RF = 10kΩ			0.1	2	μA
	Shutdown Mode
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Rev. A.5 - Oct., 2005

APA0710/0711

Electrical Characteristics(Cont.)

Electrical Characteristics at Specified Free - Air Temperature (Cont.)

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

Symbol

Parameter

Test Conditions

APA0710/1

Unit

Min.

Typ.

Max.

Shutdown, VI = VDD

1

μA

|IH|

VI = VDD

1

Shutdown,

SE/BTL,

VI = VDD

1

Shutdown, VI = 0V

1

|IL|

μA

VI = 0V

1

Shutdown,

VI = 0V

1

SE/BTL,

Operating characteristic, VDD = 5V, TA = 25°C, RL = 8Ω

PO

Output Power (Note 1)

THD = 1%, BTL mode, RL = 8Ω

900

mW

THD = 1%, SE mode, RL = 32Ω

94

THD+N

Total Harmonic Distortion

PO = 630mW, BTL mode,

0.15

%

Plus Noise (Note 1)

RL = 8Ω

Bom

Maximum Output Power

Gain = 2, THD+N = 2%

20

kHz

Bandwidth

B1

Unity-Gain Bandwidth

Open Loop

2

MHz

PSRR

Power Supply Rejection

CB = 1μF, BTL mode, RL = 8Ω

74

dB

Ratio (Note1)

μ

Ω

61

CB = 1 F, SE mode, RL

= 8

Vn

Noise Output Voltage

Gain = 1, CB = 0.1μF

28

μV(rms)

Twu

Wake-up time

CB = 1μF

400

ms

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

Pin Description

APA0710

Pin

I/O

Description

Name

No

Shutdown

1

I

Shutdown mode

control signal input, place entire

IC in shutdown mode

when held high.

Bypass

2

I

Bypass pin

When SE/BTL

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

SE/BTL

3

I

held high, the APA0710 is in SE mode

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

O

VOis the negative output in BTL mode and a high-impedance output in SE

mode

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Rev. A.5 - Oct., 2005

APA0710/0711

Pin Description

APA0711

	Pin			I/O	Description
	Name		No
				I	Shutdown mode control signal input, place entire IC in shutdown mode
	Shutdown		1
					when held low.
	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	INis the inverting input. INis 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	VOis the negative BTL output.

Typical Application Circuit

for APA0710 Application

	RF
	1 0 k Ω				VDD	6	VDD
Audio
	R I
Input				VDD/2			Cs
	10kΩ				_	CC
		4					1μ F
			IN			330μ F
					Vo+	5
CI		2	Bypass		+
0.47μ F						1 k Ω
	CB
	1 μ F
					_
					Vo-	8
From System Control		1	Shutdown		+	7
				Bias
		3	SE/BTL		GND
				Control
0.1μ F	100kΩ
VDD
	100kΩ

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APA0710/0711

Typical Application Circuit (Cont.)

for APA0711 Application

	R F
	1 0 k Ω				VD D	6	VD D
Audio
	R I
Input				VDD/2			C s
	10kΩ				_
		4	IN-				1 μ F
					Vo+	5
C I		3	IN+		+
0.47μ F
		2	Byp a s s
	C B
	1 μ F				_
					Vo-	8
					+	7
From S ystem Control		1	Shutdown	Bias	GND
				Control

for APA0711 Differential Input Application

			RF
			1 0 kΩ				VD D	6	VD D
Audio	C I		R I			VDD/2			C s
Input-	0.47μ F 10kΩ						_
				4	IN-				1 μ F
							Vo+	5
				3	IN+		+
Audio			R I
Input+			10kΩ RF	2	Bypass
			1 0 k Ω
	C I		C B				_
	0.47	μ F
			1 μ F
							Vo-	8
							+	7
From S ys tem Control				1	Shutdown	Bias	GND
						Control

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APA0710/0711

Typical Characteristics

PSRR vs. Frequency

	+0
(dB)			No-Capacitor
	-20
Ration	-40	CB=1mF	CB=0.1mF
Rejection	-60
			CB=2.2mF
Ripple	-80
		VDD=3.3V
		RL=8W
		SE
	-100
	20	100	1k	10k	20k

Frequency (Hz)

PSRR vs. Frequency

	+0	RL=8W
(dB)		CB=1mF
	-20	BTL
Ration	-40
Rejection	-60
		VDD=3.3V
Ripple	-80
			VDD=5V
	-100
	20	100	1k	10k	20k

Frequency (Hz)

PSRR vs. Frequency

	+0
(dB)				No-Capacitor
	-20
Ration	-40		CB=1mF		CB=0.1mF
Rejection	-60
					CB=2.2mF
Ripple
	-80	VDD=5V
			RL=8W
			SE
	-100
	20		100	1k	10k	20k

Frequency (Hz)

Supply Current vs. Supply Voltage

	1600
	RF=10kW
	1400
μA)	1200	BTL(SE/BTL=0.1VDD)
(	1000
Current
	800
Supply	600
	400	SE(SE/BTL=0.9VDD)
	200
	0
	2.5	3	3.5	4	4.5	5	5.5

Supply Voltage(V)

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