Microsemi

INTEGRATED PRODUCTS

5973 Avenida Encinas, Suite 101, Carlsbad 92008, Fax (760) 431-0541

Page 3

Copyright

 2001

Rev. 0.3,2002-05-08

LX1792

Low Voltage, Low Power, AudioMite™

Class-D Audio Amplifier

INTEGRA T ED

P R OD UCT S

RECOM M END E D OP ERATIN

RECOM M END E D OP ERATIN

RECOM M END E D OP ERATIN

RECOM M END E D OP ERATIN G CONDIT IO NS

G CONDIT IO NS

G CONDIT IO NS

G CONDIT IO NS

LX1792

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Supply Voltage

0.9

1.5

V

Ground

0

V

ELECT R ICA L CHAR ACTER

ELECT R ICA L CHAR ACTER

ELECT R ICA L CHAR ACTER

ELECT R ICA L CHAR ACTER I STIC S

I STIC S

I STIC S

I STIC S

with 60mH.

LX1792

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Switch Output Resistance @ Low

Drive

48

Switch Output Resistance @ Med

Drive

24

Switch Output Resistance @ High

Drive

16

19

Ω

Quiescent Current @ Low Drive

110

Quiescent Current @ Med Drive

120

Quiescent Current @ High Drive

No load

130

µA

3dB Bandwidth – min Frequency

40

100

Hz

3dB Bandwidth – max Frequency

R1=50k, R2=1000k, Fin=1kHz

10

KHz

Output Switching Frequency

200

KHz

Gain1

R1=50k, R2=500k

R1=25k, R2=500k

32

37

dB

Power Supply Rejection Ratio

PSRR

Input Reference

R1=50k, R2=500k

45

dB

Total Harmonic Distortion

THD1

R1=50k, R2=500k, Vin=5mVrms, Fin=1kHz

R1=25k, R2=500k, Vin=5mVrms, Fin=1kHz

0.3

0.5

%

Input Referred Noise

R1=50k, R2=500k, 100Hz-10kHz, No weighting

R1=25k, R2=500k, 100Hz-10kHz, No weighting

4

3

µVrms

Output clock frequency

140

200

300

KHz

Max absolute DC Offset OutN-OutP

No input signal

0

0.5

5

mV

()