TDA8559T datasheet(2/32 Pages) PHILIPS

2 / 32 page

1997 Jun 27

Philips Semiconductors

Product speciﬁcation

Low-voltage stereo headphone ampliﬁer

TDA8559

FEATURES

• Operating voltage from 1.9 to 30 V

• Very low quiescent current

• Low distortion

• Few external components

• Differential inputs

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

stereo Single-Ended (SE)

• Single-ended mode without loudspeaker capacitor

• Mute and standby mode

• Short-circuit proof to ground, to supply voltage (<10 V)

and across load

• No switch on or switch off clicks

• ESD protected on all pins.

APPLICATIONS

• Portable telephones

• Walk-mans

• Portable audio

• Mains fed equipment.

GENERAL DESCRIPTION

The TDA8559 is a stereo amplifier that operates over a

wide supply voltage range from 1.9 to 30 V and consumes

a very low quiescent current. This makes it suitable for

battery fed applications (2

× 1.5 V cells). Because of an

internal voltage buffer, this device can be used with or

without a capacitor connected in series with the load. It can

be applied as a headphone amplifier, but also as a mono

amplifier with a small speaker (25

Ω), or as a line driver in

mains applications.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Supplies

operating supply voltage

1.9

Iq(tot)

total quiescent current

−

2.75

Istb

standby supply current

−−

µA

Stereo application

output power

THD = 10%

−

THD

total harmonic distortion

Po =20mW; fi = 1 kHz

−

0.075

0.15

Po =20mW; fi = 10 kHz

−

0.1

−

voltage gain

fss

small signal roll-off frequency

−1dB

−

750

−

kHz

BTL application

output power

THD = 10%

125

140

−

THD

total harmonic distortion

Po =70mW; fi = 1 kHz

−

0.05

0.1

Po =70mW; fi = 10 kHz

−

0.2

−

voltage gain

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA8559

DIP16

plastic dual in-line package; 16 leads (300 mil); long body

SOT38-1

TDA8559T

SO16

plastic small outline package; 16 leads; body width 3.9 mm

SOT109-1

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