5

Electrical Characteristic

T =25 C,

A

°

V =3.6V,C =1uF,Vset float, unless otherwise noted

DD

L

.

,

Power Analog Microelectronics Inc

www.poweranalog.com

PAM8902

30-Vpp Mono Class-D Audio Amplifier for Piezo/Ceramic Speakers

01/2012 Rev1.4

Parameter

Symbol T est Condition

M in

Typ

M ax

Unit

Input voltage

Vdd

2.5

5.5

V

EN>1.2V, VSET = High

30

48

EN>1.2V, VSET = Floating

10

18

EN>1.2V, VSET = GND

5

12

Shutdown Current

EN=0V

0.1

1

uA

W ake-Up tim e

Twu

EN from low to high

40

m S

Chip Enable

Veh

1.2

Chip Disable

Vel

0.4

GSET/VSET High

Vh

Vdd-0.5

Vdd

GSET/VSET Floating

Vf

1

Vdd-1

GSET/VSET Low

Vl

0

0.5

Under Voltage lockout thres hold

UVLO

Vdd from high to low

2.2

Under Voltage lockout Hysteres is

UVLOh

Vdd from low to high

0.2

Therm al s hutdown threshold

OTP

150

℃

Therm al s hutdown lockout Hysteresis

OTPh

30

℃

Boost Convertor

Vo1

VSET=GND , No load

7.2

8

8.8

V

Vo2

VSET=NC , No load

10.8

12

13.2

V

Vo3

VSET=AVDD , No load

16

17.5

19

V

Current Lim it

Cl

Average input current

0.8

A

Low Side Mosfet Rdson

Rls

Io=50m A

0.5

Ω

Boost switching frequenc y

Foscb

1.1

1.5

1.9

MHz

Class D

Class D Amplifier Switching Frequency

Foscd

Input AC-GND

225

375

475

KHz

Com mon mode reject ratio

CMRR

Vin=+-100mV, Vdd=3.6V

60

dB

Ouput offset voltage

Vos

output offset voltage

5

50

m V

High side

1.5

Ω

Low side

0.6

Ω

Av1

Gset=AVDD,Vo=1Vrms

25

26

27

Av2

Gset=NC,Vo=1Vrms

21

22

23

Av3

Gset=GND,Vo=1Vrms

17

18

19

Power supply reject ratio

PSR R

200m Vpp s upply ripple at 217Hz

70

dB

Total harmonic distortion plus noise

THD+N Vo=5Vrms

0.3

%

Signal to noise ratio

SNR

Input AC Ground,A-weighting

90

dB

Closed-loop voltage gain

V

dB

m A

V

V

Output Voltage

Rds on

Rp

Quiescent Current