TDA8920C Datasheet, PDF (14/40 Pages) NXP Semiconductors – 2 X110 W class-D power amplifier

NXP Semiconductors
TDA8920C
2 × 110 W class-D power amplifier
V_O (V)
V_{O(offset)(on)}
Standby
V_{O(offset)(mute)}
slope is directly related to the time-constant
of the RC network on the MODE pin
Mute
On
0
0.8
2.2
3.0
Fig 8. Behavior of mode selection pin MODE
12. Dynamic characteristics
4.2
5.5
V_MODE (V)
coa021
12.1 Switching characteristics
Table 8. Dynamic characteristics
V_P = ±30 V; T_amb = 25 °C; unless otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
Internal oscillator
f_osc(typ) typical oscillator
R_OSC = 30.0 kΩ 325
345
365
kHz
frequency
f_osc
oscillator frequency
250
-
450
kHz
External oscillator or frequency tracking
V_OSC voltage on pin OSC
V_trip(OSC) trip voltage on pin
OSC
SGND + 4.5 SGND + 5 SGND + 6 V
-
SGND + 2.5 -
V
f_track
tracking frequency
[1] ₂₅₀
-
450
kHz
[1] When using an external oscillator, the frequency f_osc(ext) (500 kHz minimum, 900 kHz maximum) will result
in a PWM frequency f_track (250 kHz minimum, 450 kHz maximum) due to the internal clock divider; see
Section 8.2.
TDA8920C_1
Preliminary data sheet
Rev. 01 — 29 September 2008
© NXP B.V. 2008. All rights reserved.
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