TDA8920TH datasheet(2/16 Pages) PHILIPS

2 / 16 page

1998 Dec 01

Philips Semiconductors

Preliminary speciﬁcation

× 50 W class-D power ampliﬁer

TDA8920

FEATURES

• High efficiency (90%)

• Operating voltage from ±15Vto ±30 V

• Very low quiescent current

• Low distortion

• Fixed gain of 30 dB

• High output power

• Output power limiter

• Good ripple rejection

• Usable as a mono amplifier in Bridge-Tied Load (BTL) or

as a stereo Single-Ended (SE) amplifier

• Tracking possibility for oscillator frequency

• Differential audio inputs

• No switch-on or switch-off plops

• Short-circuit proof across the load

• Electrostatic discharge protection on all pins

• Thermally protected.

APPLICATIONS

• Television sets

• Home-sound systems

• Multimedia systems.

GENERAL DESCRIPTION

The TDA8920 is a high efficiency class-D audio power

amplifier. It can be used in a mono Bridge-Tied Load (BTL)

or in a stereo Single-Ended (SE) configuration. The device

operates over a wide supply voltage range from

±15Vupto ±30 V and consumes a very low quiescent

current.

QUICK REFERENCE DATA

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

General

VDD

operating supply voltage

±15

±25

±30

Iq(tot)

total quiescent current

−

efﬁciency

Po = 10 W

−

Stereo single-ended conﬁguration

output power

THD = 10%

tbf

−

Gv(cl)

closed loop voltage gain

Z

i

input impedance

120

−

Ω

Vn(o)

noise output voltage

−

100

−µV

SVRR

supply voltage ripple rejection

−−

channel separation

tbf

−

Mono bridge-tied load conﬁguration

output power

THD = 10%

−

130

−

Gv(cl)

closed loop voltage gain

Zi

input impedance

−

Ω

Vn(o)

noise output voltage

−

140

−µV

SVRR

supply voltage ripple rejection

−−

∆V

O

DC output offset voltage

−−

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