tda8592j NXP Semiconductors, tda8592j Datasheet - Page 9

• Manufacturer Part Number: tda8592j
• Description: I?c-bus Controlled 4 X 50 W Power Amplifier
• Manufacturer: NXP Semiconductors

Philips Semiconductors
8. I
9397 750 13007
Preliminary data sheet
2
C-bus specification
The headroom voltage is the voltage required for correct operation of the amplifier and is
defined as the voltage difference between the level of the DC output voltage before the V
voltage drop and the level of V
At a certain supply voltage drop, the headroom voltage will be insufficient for correct
operation of the amplifier. To prevent unwanted audible noises at the output, the
headroom protection mode will be activated; see
capacitors connected to pins SVR and ACGND to increase the headroom voltage.
Table 4:
R
300 k
27 k
1 k
Fig 4. Amplifier output during supply voltage.
Fig 5. Definition of start and stop conditions.
ADSEL
SDA
SCL
A6
1
1
1
8.4
(V)
14
V
Device address with hardware address selection; see
7
START condition
V
SVR voltage
output voltage
steady state: 0.5V
A5
1
1
1
P
S
Rev. 01 — 8 June 2004
A4
0
0
0
P
P
after the voltage drop; see
A3
1
1
1
headroom voltage
TDA8592J; TDA8592Q
A2
1
1
1
I
2
C-bus controlled 4
Figure
A1
0
0
1
9. This protection discharges the
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
A0
0
1
1
Figure
STOP condition
Figure 23
4.
50 W power amplifier
R/W
0 = write to device
1 = read from device
0 = write to device
1 = read from device
0 = write to device
1 = read from device
P
001aaa588
t (s)
mba608
SDA
SCL
9 of 33
P