LX1704

Microsemi

Analog Mixed Signal Group

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, 800-877-6458, Fax: 714-893-2570

Page 3

2W Filter less Stereo Class-D Amplifier

TM

®

Copyright

© 2009

Rev.1.4, 2009-02-23

SYSTEM CHARACT ERISTICS

test conditions: PVDD = VDD = 5.0V, PVSS = VSS = 0V, RL = 4Ω

LX1704

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Supply Current: Quiescent

No Load

2.5

5

mA

Supply Current: Shutdown Mode

Disable Pin Active

1

µA

THD+N = 1%

2.4

VDD = PVDD = 5V, Fin

= 1kHz

THD+N = 10%

3.3

THD+N = 1%

0.9

Output Power @ 4 Ohms

VDD = PVDD = 3.3V,

Fin = 1kHz

THD+N = 10%

1.2

W

Power Efficiency

Η

VDD = PVDD = 5V, Fin = 1kHz

85

%

Total Harmonic Distortion @ 50% of

Maxim Power

THD_N

0.1

%

Signal To Noise Ratio

SNR

weighted

90

dB

Output Noise Floor

Input Grounded A-weighted 20 to 20kHz

100

Frequency Response Lower Corner

Frequency

3dB relative to 1kHz

20

20K

Hz

Frequency Response

VDD = PVDD = 2.5 to 5.5V, RL = 4Ω,

3

dB

Power Supply Rejection Ratio

PSRR

Input Referred, VDD = PVDD = 2.5V to 5.5V

55

60

dB

Common Mode Rejection Ratio

CMRR

VDD = PVDD = 2.5V to 5.5V

55

60

dB

Gain

20

dB