ANPEC APA4863RI-TY, APA4863RI-TU, APA4863OI-TU, APA4863OI-TR, APA4863KI-TR, APA4863KI-TU Datasheet

APA4863

Stereo 2.2W Audio Power Amplifier

Features

•Depop Circuitry Integrated

•Thermal Shutdown Circuitry Integrated

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

•Output Power at 1% THD+N, VDD=5V

- 2.2W/Ch (typ) into a 3 Ω Load - 1.8W/Ch (typ) into a 4 Ω Load - 1.2 W/Ch (typ) into a 8 Ω Load

•Shutdown Control Mode, ISD= 0.5 µA

•Output Power (SE) at 0.5% THD+N, VDD=5V

- 90mW/Ch (typ.) into a 32Ω Load

•Various Power Packages Available SOP, TSSOP, TSSOP-P

Applications

•Stereo Audio Power Amplifier for Notebook Computer

•Portable Televisions

•Portable and Desktop Computers

General Description

The APA4863 is a stereo bridge-tied audio power amplifier in various power packages , including SOP , TSSOP and TSSOP-P . When connecting to a 5V voltage supply , the APA4863 is capable of delivering 2.2W/1.8W/1.2W of continuous RMS power per channel into 3Ω/ 4Ω/ 8Ω bridge-tied loads with less than 1% THD+N respectively . When APA4863 operates in the single-ended load , it is capable of delivering 90mW of continuous RMS power per channel into 32Ω load . The APA4863 simplifies design and frees up board space for other features .

The APA4863 also served well in low-voltage applications , which provides 750mW (1% THD+N) per channel into 4Ω loads with a 3.3V supply voltage . Both of the depop circuitry and the thermal shutdown protection circuitry are integrated in the APA4863 , that reduces pops and clicks noise during power up and when using the shutdown mode and protects the chip from being destroyed by over-temperature failure . To simplify the audio system design in notebook computer applications , the APA4863 combines a stereo bridge-tied loads mode for speaker drive and a stereo single-end mode for headphone drive into a single chip , where both modes are easily switched by the HP-IN input control pin signal . For power sensitive applications , the APA4863 also features a shutdown function which keeps the supply current only 0.5 µA (typ.) .

Ordering Information

APA4863

Package Code

K: SOP

Handling Code

O: TSSOP

R: TSSOP-P*

Temp. Range

Temp. Range

I : -40 to 85

° C

Package Code

Handling Code

TU : Tube

TR : Tape & Reel

TY: Tray

* TSSOP-P is a standard TSSOP package with a thermal pad exposed on the bottom of the package.

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.3 - Apr., 2001

APA4863

Block Diagram

VDD

CS

Audio

RF

0.1µ F

4, 13

Input

R1

20KΩ

6

- IN A

CO

-

- OUT A

5

20KΩ

8

+ IN A*

+

C1

+

20KΩ

100µ F

1 µ F

20KΩ

Control

20KΩ

1KΩ

Pin

Ring

RL

Bypass

50ΚΩ

+ OUT A

8Ω

10

To HP-IN Circuit

CB

VDD / 2

-

3

2.2µ F

50KΩ

+

Tip Sleeve

Audio

Input

R1

- IN B

11

CO

Headphone Jack

-

- OUT B

12

20KΩ

9

+ IN B*

+

C1

R

+

1 µ F

F

20KΩ

20KΩ

100µ F

20KΩ

20KΩ

1KΩ

VDD

RL

8Ω

-

+ OUT B

14

100ΚΩ

1

Shutdown

+

To Control Pin on

16

HP-IN

Headphone Jack

100KΩ

GND

2,7,15

* +INA and +INB pins are connected to Bypass pin inside the IC.

Absolute Maximum Ratings

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

Symbol	Parameter	Rating	Unit
VDD	Supply Voltage	6	V
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
VESD	Electrostatic Discharge	-2000 to 2000 *1	V

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

Copyright ANPEC Electronics Corp.	2	www.anpec.com.tw
Rev. A.3 - Apr., 2001

APA4863

Recommended Operating Conditions

			Min.	Typ.	Max.	Unit
Supply Voltage, VDD			3	5	5.5	V
Operating free-air	VDD=5V,	4-Ω stereo BTL drive, with	-20		85	° C
temperature, TA	250mW/Ch average	proper PCB design
	power
	VDD=5V,	4-Ω stereo BTL drive, with	-20
					85
	1.8 W/Ch average	proper PCB design and 300
	power	CFM forced-air cooling
Common mode	VDD=5 V		1.25		4.5
input voltage, VICM						V
	VDD=3.3V		1.25		2.7

Dissipation Rating Table

Package	Air Flow	Thermal Resistance	TA≤ 25° C	TA=70° C
	(CFM)	θ JA(° C/W)
SO16 +	0	50	2.5W	1.6W
TSSOP ++	0	73.2	1.7W	1.1W
	200	66.6	1.8W	1.2W
TSSOP-P ++	0	37.6	3.3W	2.1W
	200	32.3	3.8W	2.4W

+ : The parameter is measured with the recommended copper heat sink pattern on an 2-layer PCB, 11.7 in2 3.0× 2.4 in2 in PCB,

1oz. copper, 3.0× 1.5 in2 in coverage at Top-layer and Bottom-layer at 100% coverage (7.2in2). ++:The parameter is measured with the JEDEC standard test boards (multi-layer PCB).

Electical Characteristics

Electrical Characteristics for Entire IC

The following specifications apply for VDD= 5V unless otherwise noted. Limits apply for TA= 25°C

Symbol	Parameter	Test Conditions		APA4863			Unit
			Min.	Typ.		Max.
VDD	Supply Voltage		3			5.5	V
IDD	Quiescent Power Supply	VIN=0V, IO=0A, HP-IN=0V		9		13.5	mA
	Current	VIN=0V, IO=0A, HP-IN=4V		5		7.5
ISD	Shutdown Current	VPIN1= VDD	5	0.5			µ A
VIH	Headphone High Input Voltage		4				V
VIL	Headphone Low Input Voltage					0.8	V

Copyright ANPEC Electronics Corp.	3	www.anpec.com.tw
Rev. A.3 - Apr., 2001

APA4863

Electical Characteristics Cont.

Electrical Characteristics for BTL Mode Operation

The following specifications apply for VDD= 5V unless otherwise noted. Limits apply for TA= 25°C

Symbol	Parameter	Test Conditions	APA4863	Unit
			Typ.
VOS	Output Offset Voltage	VIN=0V	5	mV
PO	Output Power	THD=1%, f=1kHz
		RL=3Ω	2.2	W
		RL=4Ω	1.8
		RL=8Ω	1.2
		THD=10%, f=1kHz
		RL=3Ω	2.7
		RL=4Ω	2.3
		RL=8Ω	1.5
THD+N	Total Harmonic Distortion + Noise	AVD=2, f=1kHz	0.3	%
		RL=4Ω , PO=1.8W
		RL=8Ω , PO =1W	0.15
RSRR	Power Supply Rejection Ratio	VDD=5V, VRIPPLE=200MvRms , RL=8Ω	64	dB
		CB=2.2µ F
XTALK	Channel Separation	f=1kHz , CB=2.2µ F, PO=1W, RL=8Ω	90	dB
SNR	Signal-to-Noise Ratio	VDD=5V, PO =1.1W, RL=8Ω	95	dB

Electrical Characteristics for SE Mode Operation

The following specifications apply for VDD= 5V unless otherwise noted. Limits apply for TA= 25°C

Symbol	Parameter			Test Conditions			APA4863	Unit
							Typ.
VOS	Output Offset Voltage		VIN=0V				5	mV
PO	Output Power		THD=0.5%,	f=1kHz, RL=32Ω			90	mW
			THD=1%,	f=1kHz, RL=8Ω			320
			THD=10%,	f=1kHz, RL=8Ω			400
THD+N	Total Harmonic Distortion		AV= -1 , PO=75mW, f=1kHz, RL=32Ω				0.02	%
	plus Noise
RSRR	Power Supply Rejection		VRIPPLE=200mV RMS , f=1kHz, CB=2.2µ F, RL=8Ω				49	dB
	Ratio
XTALK	Channel Separation		f=1kHz , CB=2.2µ F, PO=32mW, RL=32Ω				85	dB
SNR	Signal-to-Noise Ratio		VDD=5V , PO =340mW, RL=8Ω				95	dB
Truth Table for Logic Inputs
	Shutdown		HP-IN			APA4863 Mode
	Low		Low			Bridge -Tied
	Low		High			Single-Ended
	High		Low			APA4863 Shutdown
	High		High			APA4863 Shutdown
Copyright ANPEC Electronics Corp.				4			www.anpec.com.tw
Rev. A.3 - Apr., 2001

APA4863

Pin Description

																					HP-IN
SHUTDOWN				1	16				HP-IN	SHUTDOWN						1	20
GND				2	15				GND	GND						2	19				GND
										+ OUT A						3	18				+ OUT B
									+ OUT B
				3	14
+ OUT A										V						4	17				VDD
VDD				4	13				VDD	DD						5	16				- OUT B
										- OUT A
																6	15				- IN B
- OUT A				5	12				- OUT B	- IN A
																					BYPASS
- IN A				6	11				- IN B	GND						7	14
										+ IN A						8	13				+ IN B
GND				7	10				BYPASS	NC						9	12				NC
				8					+ IN B
+ IN A					9					NC						10	11				NC

Top View for SOP

Top View for TSSOP

HP-IN

SHUTDOWN

1

20

GND

2

19

GND

+ OUT A

3

18

+ OUT B

VDD

4

17

VDD

Thermal

- OUT A

5

16

- OUT B

Pad

- IN A

6

15

- IN B

7

14

BYPASS

GND

+ IN A

8

13

+ IN B

GND

9

12

GND

GND

10

11

GND

Top View

Bottom View

for TSSOP-P

for TSSOP -P

Pin Description

Name

I/O

Description

GND

Ground connection of circuitry

VDD

I

Supply voltage input

+ INA

I

Non-inverting input of channel A, connected to bypass pin inside the IC

- INA

I

Input pin of channel A

+ OUT A

O

A channel + output in BTL mode, high impedance in SE mode

- OUT A

O

A channel - output in BTL mode, + output in SE mode

+ IN B

I

Non-inverting input of channel B, connected to bypass pin inside the IC

- IN B

I

Input pin of channel B

+ OUT B

O

B channel + output in BTL mode, high impedance in SE mode

- OUT B

O

B channel - output in BTL mode, + output in SE mode

BYPASS

Connect to voltage divider for internal mid-supply bias

HP-IN

I

Headphone control pin input, hold high for single-ended mode operation

SHUTDOWN

I

Shutdown mode control pin input, places entire IC in shutdown mode

when held high, IDD= 0.5 A

Copyright ANPEC Electronics Corp.

5

www.anpec.com.tw

Rev. A.3 - Apr., 2001

APA4863

Typical Characteristics

	10	THD+N vs Output Power				THD+N vs Frequency
					10
	VDD=5V, RL=4Ω					VDD=5V, PO=1.8W
	BW<80kHz
						RL=4Ω,	BW<80kHz
	1	20Hz			1
(%)				(%)
		20kHz
THD+N				THD+N
		1kHz			0.1
	0.1
					0.01
	0.01				20	100	1k	10k 20k
	10m	100m	1	3

Figure 1 : Output Power (W)

Figure 2 : Frequency (Hz)

Power Dissipation vs Output Power

THD+N vs Frequency

	1.4						10
	1.2						VDD=5V, PO=1W
							RL=8Ω, BTL Mode
(W)	1 VDD=5V						1
Power Dissipation
	0.8		RL=4Ω
	0.6								AVD=10
			RL= 8Ω				0.1
	0.4						THD+N(%)		AVD=2
	0.2
							0.01
	0						20	100	1k	10k 20k
		0	0.5	1	1.5	2	2.5

Figure 3 : Output Power (W)

Figure 4 : Frequency (Hz)

Copyright ANPEC Electronics Corp.	6	www.anpec.com.tw
Rev. A.3 - Apr., 2001