TDA8922TH datasheet(3/36 Pages) PHILIPS

3 / 36 page

2003 Mar 20

Philips Semiconductors

Objective speciﬁcation

× 25 W class-D power ampliﬁer

TDA8922

FEATURES

• High efficiency (∼90%)

• Operating supply voltage from ±12.5 to ±30 V

• Very low quiescent current

• Low distortion

• Usable as a stereo Single-Ended (SE) amplifier or as a

mono amplifier in Bridge-Tied Load (BTL)

• Fixed gain of 30 dB in Single-Ended (SE) and 36 dB in

Bridge-Tied Load (BTL)

• High output power

• Good ripple rejection

• Internal switching frequency can be overruled by an

external clock

• No switch-on or switch-off plop noise

• Short-circuit proof across load and to supply lines

• Electrostatic discharge protection

• Thermally protected.

APPLICATIONS

• Television sets

• Home-sound sets

• Multimedia systems

• All mains fed audio systems

• Car audio (boosters).

GENERAL DESCRIPTION

The TDA8922 is a high efficiency class-D audio power

amplifier with very low dissipation. The typical output

power is 2

× 25 W.

The device is available in the HSOP24 power package

with a small internal heatsink and in the DBS23P

through-hole power package. Depending on the supply

voltage and load conditions, a very small or even no

external heatsink is required. The amplifier operates over

a wide supply voltage range from

±12.5 to ±30 V and

consumes a very low quiescent current.

QUICK REFERENCE DATA

Note

1. See Section 16.5.

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

General; VP = ±20 V

supply voltage

±12.5 ±20

±30

Iq(tot)

total quiescent supply

current

no load connected

−

efﬁciency

Po = 25 W; SE: RL =2 × 8 Ω; fi = 1 kHz

−

Stereo single-ended conﬁguration

output power

RL =8 Ω; THD = 10%; VP = ±20 V; note 1

−

RL =4 Ω; THD = 10%; VP = ±15 V; note 1

−

Mono bridge-tied load conﬁguration

output power

RL =8 Ω; THD = 10%; VP = ±15 V; note 1

−

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA8922TH

HSOP24

plastic, heatsink small outline package; 24 leads;

low stand-off height

SOT566-3

TDA8922J

DBS23P

plastic DIL-bent-SIL power package; 23 leads

(straight lead length 3.2 mm)

SOT411-1

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