TDA8594 NXP Semiconductors, TDA8594 Datasheet - Page 5

• Manufacturer Part Number: TDA8594
• Description: The TDA8594 is a complementary quad Bridge Tied Load (BTL) audio power amplifiermade in BCDMOS technology
• Manufacturer: NXP Semiconductors

NXP Semiconductors
7. Functional description
TDA8594_2
Product data sheet
7.1 Input stage
Table 3.
To keep the output pins on the front side, special reverse bending is applied.
The TDA8594 is a complementary quad BTL audio power amplifier made in BCDMOS
technology. It contains four independent amplifiers in BTL configuration (see
Through the I
programmable and the information to be shown on the two diagnostic pins can be
selected. The status of each amplifier (output offset, load or no load, short-circuit or
speaker incorrectly connected) can be read separately. The TDA8594 is protected against
overvoltage, short-circuit, over-temperature, open ground and open V
Three different I
ADSEL pin. If the ADSEL pin is short-circuit to ground, the TDA8594 operates in legacy
mode. In this mode, no I
two-level (Standby mode and On mode) to a three-level pin (Standby mode, On mode and
mute).
The input stage is a high-impedance pseudo-differential input stage. The negative inputs
of the four channels are combined on the ACGND pin. For the best performance on
supply voltage ripple rejection and pop noise, the capacitor connected to the ACGND pin
must be four times the value of the input capacitor (or as close to the value as possible).
Symbol
OUT1
PGND1
OUT1+
SVR
IN1
IN2
SGND
IN4
IN3
ACGND
OUT3+
PGND3
OUT3
V
OUT4+
SCL
OUT4
PGND4
SDA
TAB
P1
Pin description
Pin
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
2
C-bus, the diagnostic functions of temperature level and clip level are fully
2
C-bus addresses are selected with an external resistor connected to the
Description
negative channel 1 output
power ground channel 1
positive channel 1 output
half supply filter capacitor
channel 1 input
channel 2 input
signal ground
channel 4 input
channel 3 input
AC ground input
positive channel 3 output
power ground channel 3
negative channel 3 output
supply voltage 1
positive channel 4 output
I
negative channel 4 output
power ground channel 4
I
heatsink connection, must be connected to ground
Rev. 02 — 11 December 2007
2
2
C-bus clock input
C-bus data input/output
2
C-bus is needed and the function of the STB pin will change from
…continued
I
2
C-bus controlled 4
50 W power amplifier
P
TDA8594
© NXP B.V. 2007. All rights reserved.
connections.
Figure
1).
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