Philips TDA8920B Product Data Sheet page 7

Philips Semiconductors
TDA8920B_2
Product data sheet
V
mode
> 4.2 V
2.2 V < V < 3 V
mode
0 V (SGND)
V
mode
> 4.2 V
2.2 V < V < 3 V
mode
0 V (SGND)
Upper diagram: When switching from standby to mute, there is a delay of 100 ms before the
output starts switching. The audio signal is available after V
not earlier than 150 ms after switching to mute. For pop noise-free start-up it is recommended
that the time constant applied to the MODE pin is at least 350 ms for the transition between
mute and operating.
Lower diagram: When switching directly from standby to operating, there is a first delay of
100 ms before the outputs starts switching. The audio signal is available after a second delay
of 50 ms. For pop noise-free start-up it is recommended that the time constant applied to the
MODE pin is at least 500 ms for the transition between standby and operating.
Fig 5. Timing on mode selection input
Rev. 02 — 07 November 2005
50 %
duty cycle
mute
standby
100 ms
50 ms
50 %
duty cycle
mute
standby
100 ms
50 ms
TDA8920B
2 × 100 W class-D power amplifier
audio output
modulated PWM
operating
> 350 ms
audio output
modulated PWM
operating
> 350 ms
has been set to operating, but
mode
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
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time
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