TDA8947J 데이터 시트보기 (PDF) - NXP Semiconductors.

부품명

상세내역

제조사

TDA8947J

4-channel audio amplifier

NXP Semiconductors. 

TDA8947J

4-channel audio amplifier

Rev. 02 — 16 June 2005

Product data sheet

1. General description

The TDA8947J contains four identical audio power amplifiers. The TDA8947J can be used

as: four Single-Ended (SE) channels with a fixed gain of 26 dB, two times Bridge-Tied

Load (BTL) channels with a fixed gain of 32 dB or two times SE channels (26 dB gain)

plus one BTL channel (32 dB gain) operating as a 2.1 system

The TDA8947J comes in a 17-pin Dil-Bent-Sil (DBS) power package. The TDA8947J is

pin compatible with the TDA8944AJ and TDA8946AJ.

The TDA8947J contains a unique protection circuit that is solely based on multiple

temperature measurements inside the chip. This gives maximum output power for all

supply voltages and load conditions with no unnecessary audio holes. Almost any supply

voltage and load impedance combination can be made as long as thermal boundary

conditions (number of channels used, external heatsink and ambient temperature)

allow it.

2. Features

s SE: 1 W to 25 W, BTL: 4 W to 50 W operation possibility (2.1 system)

s Soft clipping

s Standby and Mute mode

s No on/off switching plops

s Low standby current

s High supply voltage ripple rejection

s Outputs short-circuit protected to ground, supply and across the load

s Thermally protected

s Pin compatible with TDA8944AJ and TDA8946AJ

3. Applications

s Television

s PC speakers

s Boom box

s Mini and micro audio receivers

Share Link: