TDA8547TS 查看數據表（PDF） - Philips Electronics

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TDA8547TS

2 × 0.7 W BTL audio amplifier with output channel switching

Philips Electronics 

Philips Semiconductors

2 × 0.7 W BTL audio amplifier with

output channel switching

Product specification

TDA8547TS

FEATURES

• Selection between output channels

• Flexibility in use

• Few external components

• Low saturation voltage of output stage

• Gain can be fixed with external resistors

• Standby mode controlled by CMOS compatible levels

• Low standby current

• No switch-on/switch-off plops

• High supply voltage ripple rejection

• Protected against electrostatic discharge

• Outputs short-circuit safe to ground, VCC and across the

load

• Thermally protected.

GENERAL DESCRIPTION

The TDA8547TS is a two channel audio power amplifier

for an output power of 2 × 0.7 W with a 16 Ω load at a 5 V

supply. At a low supply voltage of 3.3 V an output power of

0.6 W with an 8 Ω load can be obtained. The circuit

contains two BTL amplifiers with a complementary

PNP-NPN output stage and standby/mute logic.

The operating condition of all channels of the device

(standby, mute or on) is externally controlled by the

MODE pin. With the SELECT pin one of the output

channels can be switched in the standby condition. This

feature can be used for loudspeaker selection and also

reduces the quiescent current consumption.

When only one channel is used the maximum output

power is 1.2 W.

APPLICATIONS

• Telecommunication equipment

• Portable consumer products

• Personal computers

• Motor-driver (servo).

QUICK REFERENCE DATA

SYMBOL

VCC

Iq

Istb

Po

THD

SVRR

PARAMETER

supply voltage

quiescent current

standby current

output power

two channels

one channel

total harmonic distortion

supply voltage ripple rejection

CONDITIONS

VCC = 5 V; 2 channels

VCC = 5 V; 1 channel

THD = 10%; RL = 8 Ω; VCC = 3.3 V

THD = 10%; RL = 16 Ω; VCC = 5 V

THD = 10%; RL = 8 Ω; VCC = 5 V

THD = 10%; RL = 4 Ω; VCC = 3.3 V

Po = 0.4 W

MIN.

2.2

−

−

−

0.5

0.6

1

1

−

50

TYP.

5

15

8

−

0.6

0.7

1.2

1.2

0.15

−

MAX. UNIT

18

V

22

mA

12

mA

10

µA

−

W

−

W

−

W

−

W

−

%

−

dB

ORDERING INFORMATION

TYPE

NUMBER

TDA8547TS

PACKAGE

NAME

DESCRIPTION

SSOP20 plastic shrink small outline package; 20 leads; body width 4.4 mm

VERSION

SOT266-1

1998 Apr 01

2

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