TDA8593J
I
2
C-bus controlled 4
×
45 W power amplifier
Rev. 02 — 3 June 2005
Product data sheet
1. General description
The TDA8593J is a complementary quad BTL audio power amplifier made in BCDMOS
technology. It contains four independent amplifiers in Bridge Tied Load (BTL)
configuration. Through the I
2
C-bus, the diagnostic information of each amplifier and
speaker can be read separately.
Both front and both rear channel amplifiers can be configured independently in line driver
mode with a gain of 20 dB.
2. Features
s
I
2
C-bus control
s
Hardware programmable I
2
C-bus address
s
Can drive a 2
Ω
load with a battery voltage of up to 16 V and a 4
Ω
load with a battery
voltage of up to 18 V
s
DC-load detection: open, short and present
s
AC-load (tweeter) detection
s
Programmable clip detection: 1 % or 3 %
s
Programmable thermal protection pre-warning
s
Independent short-circuit protection per channel
s
Low gain line driver mode (20 dB)
s
Loss-of-ground and open V
P
safe
s
All outputs protected from short-circuit to ground, to V
P
, or across the load
s
All pins protected from short-circuit to ground
s
Soft thermal clipping to prevent audio holes
s
Low battery detection.
3. Quick reference data
Table 1:
Quick reference data
V
P
= V
P1
= V
P2
= 14.4 V; unless otherwise specified.
Symbol
V
P
I
q
Parameter
quiescent current
Conditions
Min
8
-
Typ
14.4
280
Max
18
400
Unit
V
mA
operating supply voltage R
L
= 4
Ω
Philips Semiconductors
TDA8593J
I
2
C-bus controlled 4
×
45 W power amplifier
Pin description
…continued
Pin
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
Description
channel right front positive output
half supply voltage filter capacitor
channel right front input
channel right rear input
signal ground
channel left rear input
channel left front input
AC ground
channel left front positive output
power ground 3
channel left front negative output
power supply voltage 1
channel left rear positive output
standby or operating or mute mode select input
channel left rear negative output
power ground 4
diagnostic and clip detection output; active LOW
heatsink connection, must be connected to ground
Table 3:
Symbol
OUTRF+
SVR
INRF
INRR
SGND
INLR
INLF
ACGND
OUTLF+
PGND3
OUTLF−
V
P1
OUTLR+
STB
OUTLR−
PGND4
DIAG
TAB
To keep the output pins on the front side, shift bending is applied.
7. Functional description
The TDA8593J is an audio power amplifier with four independent amplifiers configured in
Bridge Tied Load (BTL) with diagnostic capability. The amplifier diagnostic functions give
information about output offset, load, or short-circuit. Diagnostic functions are controlled
via the I
2
C-bus. The TDA8593J is protected against short-circuit, over-temperature, open
ground and open V
P
connections. If a short-circuit occurs at the input or output of a single
amplifier, that channel shuts down, and the other channels continue to operate normally.
The channel that has a short-circuit can be disabled by the microcontroller via the
appropriate enable bit of the I
2
C-bus to prevent any noise generated by the fault condition
from being heard.
7.1 Start-up
When pin STB is LOW, the total quiescent current is low and the I
2
C-bus lines are
high-impedance.
When pin STB is HIGH, the I
2
C-bus is biased and then the TDA8593J performs a
power-on reset. When bit D0 of instruction byte IB1 is set, the amplifier is activated, bit D7
of data byte 2 (power-on reset occurred) is reset, and pin DIAG is no longer held LOW.
9397 750 14847
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 3 June 2005
5 of 33
Test/Measurement
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