MP1720 datasheet(4/14 Pages) MPS

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MP1720 – 2.7W LOW EMI HIGH EFFICIENCY MONO CLASS-D AUDIO AMPLIFIER

MP1720 Rev. 1.01

www.MonolithicPower.com

8/9/2012

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

OPERATION CHARACTERISTICS

TEST SET-UP GRAPH, VIN = PVIN = SHDN=3.3V, DGND = PGND = 0V, CLK = DGND

(fCLK=1.0MHz), RLoad = 4Ω, Gain=12dB, TA = +25C, unless otherwise noted

(6).

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

VIN =5.0V

2.14

VIN =3.3V

0.87

THD+N=1%,

RLoad=4Ω

VIN =2.5V

0.48

VIN =5.0V

2.78

VIN =3.3V

1.18

THD+N=10%,

RLoad=4Ω

VIN =2.5V

0.64

VIN =5.0V

1.19

VIN =3.3V

0.55

THD+N=1%,

RLoad=8Ω

VIN =2.5V

0.31

VIN =5.0V

1.56

VIN =3.3V

0.71

Output Power

POUT

THD+N=10%,

RLoad=8Ω

VIN =2.5V

0.40

POUT=2W,

VIN =5.0V

0.15%

POUT=0.8W

VIN=3.3V

0.13%

Total Distortion Pulse

Noise

THD+N

POUT=0.4W

VIN=2.5V

0.13%

Supply Ripple

Rejection Ratio

(7)

KSVR

fS=217Hz,

VRipple=300mVPP,

input AC-ground

VIN=3.3V

-60

Signal to Noise Ratio

SNR

VOUT=2 VRMS

A-weighted

VIN=3.3V

91.3

No weighting

Output Noise

VIN=3.3V, fs=20Hz

to 20kHz, input AC-

grounded

A weighting

μVRMS

Common Mode

Rejection Ratio

(8)

CMRR

VicRIPPLE=300mVPP,

fs=1kHz

VIN=3.3V

-62

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