tda8575t NXP Semiconductors, tda8575t Datasheet - Page 9

• Manufacturer Part Number: tda8575t
• Description: Ground Noise Isolation Amplifier
• Manufacturer: NXP Semiconductors

Philips Semiconductors
APPLICATION INFORMATION
General
The TDA8575(T) is a two channel amplifier with differential
input and single-ended output for use in car audio
applications. The differential amplifier has a gain of 0 dB,
a low distortion and a high common mode rejection.
1996 Jul 29
handbook, full pagewidth
handbook, full pagewidth
Ground noise isolation amplifier
Fig.8 The TDA8575(T) eliminates noise problems in car audio systems.
in
tuner
tape
CD
V i
in
car body
V CC
Fig.7 A typical noise problem in car audio systems.
tuner
tape
CD
V i
car body
V no V i
V CC
V no
V no
long cables
V no
ground noise isolation amplifier
V no V i
car body noise
car body noise
9
V CC
Due to wiring resistance and noise coming from various
electric devices in the automobile, performance loss will
appear in those car audio applications where long
connections between signal sources and amplifiers (or
boosters) are necessary. To solve these problems the
TDA8575(T) is developed (see Figs 7 and 8).
long cable
V i V no / CMRR
car body
V bat
power
amplifier
car body
V bat
MGE833
speaker
power
amplifier
MGE834
speaker
Preliminary specification
TDA8575