APA2051 datasheet(3/32 Pages) ANPEC

Part #	APA2051

Description	2.4W Stereo Audio Power Amplifier (with Gain Setting) & Capfree Headphone Driver

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Manufacturer	ANPEC [Anpec Electronics Coropration]

Direct Link	http://www.anpec.com.tw

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Copyright

Rev. A.4 - Aug., 2009

www.anpec.com.tw

3

APA2051

Recommended Operating Conditions

Symbol

Parameter

Range

Unit

VDD

Supply Voltage

4.5 ~ 5.5

V

HVDD

Supply Voltage

3.0 ~ 3.6

V

VIH

High Level Threshold Voltage

AMP_EN, HP_EN

2 ~

V

VIL

Low Level Threshold Voltage

AMP_EN, HP_EN

~ 0.8

V

for Amplifier

~ VDD-1

Vicm

Common Mode Input Voltage

for Headphone Amplifier

~ HVDD-1

V

Shutdown

~ 0.8

Gain Setting

2 ~ 4.2

V

VSET

Input Voltage

Fix Gain

4.5 ~

V

Electrical Characteristics

APA2051

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Supply Voltage

4.5

-

5.5

V

HVDD

Headphone Amplifier Supply

Voltage

3.0

-

3.6

V

IVDD

VDD Supply Current

-

17.5

29

IHVDD

HVDD Supply Current

Only Speaker mode,

AMP_EN = HP_EN = 0V

-

0.15

1

IVDD

VDD Supply Current

-

12

20

IHVDD

HVDD Supply Current

Only Headphone mode,

HP_EN = AMP_EN = 5V

-

3

5

IVDD

VDD Supply Current

-

20

35

IHVDD

HVDD Supply Current

All Enable, HP_EN=5V and

AMP_EN = 0V

-

3

5

mA

ISD(HVDD)

HVDD Shutdown Current

-

50

90

µA

ISD(VDD)

VDD Shutdown Current

SET = 0V

-

1

10

IAMP_EN

Input Current

AMP_EN

-

1

-

µA

IHP_EN

Input Current

HP_EN

-

10

15

µA

SPEAKER MODE

THD+N =1%, fin =1kHz

RL =4

Ω

RL =8

Ω

1.0

1.9

1.2

-

PO

Output Power

THD+N =10%, fin =1kHz

RL =4

Ω

RL =8

Ω

1.3

2.4

1.5

-

W

VOS

Output Offset Voltage

RL =8

Ω, Gain =10.5dB

-

10

mV

V

DD = 5V, HVDD = 3.3V, GND = PGND = CPGND = 0V, TA= 25°C (unless otherwise noted).

Thermal Characteristics

Symbol

Parameter

Typical Value

Unit

θ

JA

Thermal Resistance - Junction to Ambient

(Note 2)

TQFN4x4-28

45

oC/W

Note 2 : 3.42 in2 printed circuit board with 2OZ trace and copper through 10 vias of 15mil diameter vias. The thermal pad on the TQFN4x4-

28 packages with solder on the printed circuit board.

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