TFA9812HN PHILIPS [NXP Semiconductors], TFA9812HN Datasheet - Page 51

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TFA9812HN

Manufacturer Part Number
TFA9812HN
Description
BTL stereo Class-D audio amplifier with I2S input
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
NXP Semiconductors
TFA9812_2
Preliminary data sheet
14.3 Speaker configuration and impedance
14.4 Typical application schematics
Remark: A 4.8
used up to a supply voltage of 17 V without running into current limiting. Current limiting
(clipping) will avoid audio holes, but it causes a distortion comparable to voltage clipping.
For a flat-frequency response (second-order Butterworth filter) it is necessary to change
the low pass filter components L
impedance.
Table 58.
Impedance ( )
6
8
16
Filter component values
speaker (6
Rev. 02 — 22 January 2009
L
15
18
47
LC
speaker with 20 % spread) in BTL configuration can be
LC
( H)
and C
BTL stereo Class-D audio amplifier with I
LC
according to the speaker configuration and
C
680
560
330
LC
(nF)
© NXP B.V. 2009. All rights reserved.
TFA9812
2
S input
51 of 66

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