TDA8595 Datasheet, PDF (9/50 Pages) NXP Semiconductors – I2C-bus controlled 4 ´ 45 W power amplifier

NXP Semiconductors
TDA8595
I²C-bus controlled 4 × 45 W power amplifier
When the amplifier is switched off by pulling the STB pin LOW, the amplifier is first muted
(fast mute) and then the capacitor on the SVR pin is discharged. With an SVR capacitor of
22 µF the standby current is reached 1 second after the STB pin is switched to zero (see
Figure 4, Figure 5, Figure 6 and Figure 7).
The start-up and shut-down pop can be further decreased by activating the low pop mode.
When the low pop mode is enabled (IB2[D3] = 0), the output voltage rise from ground level
during start-up will be slower (see Figure 6). This will decrease the pop even more but will
increase the start-up time.
V_P
DIAG
DB2 bit D7
POR
IB1 bit D0
start enable
STB
t_wake
SVR
amplifier
output
t_{amp_on}
t_{d(mute_off)}
t_{d(soft_mute)}
Fig 4. Start-up and shut-down timing in I²C-bus mode
t_off
fast
mute
t_{d(fast_mute)}
001aad 168
TDA8595_2
Product data sheet
Rev. 02 — 21 November 2007
© NXP B.V. 2007. All rights reserved.
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