TDA8920B_2
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 02 — 07 November 2005
13 of 34
Philips Semiconductors
TDA8920B
2
×
100 W class-D power amplifier
[1]
The circuit is DC adjusted at V
P
=
±
12.5 V to
±
30 V.
[2]
With respect to SGND (0 V).
[3]
The transition between Standby and Mute mode has hysteresis, while the slope of the transition between Mute and Operating mode is
determined by the time-constant of the RC-network on the MODE pin; see
[4]
DC output offset voltage is applied to the output during the transition between Mute and Operating mode in a gradual way. The slope of
the dV/dt caused by any DC output offset is determined by the time-constant of the RC-network on the MODE pin.
12. Dynamic characteristics
12.1 Switching characteristics
Temperature protection
T
prot
temperature protection activation
-
150
-
°
C
T
hys
hysteresis of temperature protection
-
20
-
°
C
Table 7:
Static characteristics
…continued
V
P
=
±
27 V; f
osc
= 317 kHz; T
amb
= 25
°
C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Fig 7.
Behavior of mode selection pin MODE
STBY
MUTE
ON
5.5
coa021
V
MODE
(V)
4.2
3.0
2.2
0.8
0
V
O
(V)
V
oo(mute)
V
oo(on)
slope is directly related to the time-constant
of the RC-network on the MODE pin
Table 8:
Switching characteristics
V
DD
=
±
27 V; T
amb
= 25
°
C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Internal oscillator
f
osc
typical internal oscillator frequency
R
OSC
= 30.0 k
Ω
290
317
344
kHz
f
osc(int)
internal oscillator frequency range
210
-
600
kHz
External oscillator or frequency tracking
V
OSC
high-level voltage on pin OSC
SGND + 4.5
SGND + 5
SGND + 6
V
V
OSC(trip)
trip level for tracking on pin OSC
-
SGND + 2.5
-
V
f
track
frequency range for tracking
210
-
600
kHz
