TDA8920B_2
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 07 November 2005
11 of 34
Philips Semiconductors
TDA8920B
2
×
100 W class-D power amplifier
8.4 Differential audio inputs
For a high common mode rejection ratio and a maximum of flexibility in the application, the
audio inputs are fully differential. By connecting the inputs anti-parallel the phase of one of
the channels can be inverted, so that a load can be connected between the two output
filters. In this case the system operates as a mono BTL amplifier and with the same
loudspeaker impedance an approximately four times higher output power can be
obtained.
The input configuration for a mono BTL application is illustrated in
In the stereo single-ended configuration it is also recommended to connect the two
differential inputs in anti-phase. This has advantages for the current handling of the power
supply at low signal frequencies.
9.
Limiting values
[1]
Overvoltage protection might be activated.
[2]
Current limiting concept. See also
.
Fig 6.
Input configuration for mono BTL application
V
in
IN1P
OUT1
power stage
mbl466
OUT2
SGND
IN1M
IN2P
IN2M
Table 5:
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
Conditions
Min
Max
Unit
V
P
supply voltage
operating
-
±
30
V
non operating
-
±
32
V
I
ORM
repetitive peak current in
output pin
maximum output
current limiting
8
-
A
T
stg
storage temperature
−
55
+150
°
C
T
amb
ambient temperature
−
40
+85
°
C
T
j
junction temperature
-
150
°
C
