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| TFA9879_15 Datasheet, PDF (15/60 Pages) NXP Semiconductors – Mono BTL class-D audio amplifier for portable applications | |||
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NXP Semiconductors
TFA9879
Mono BTL class-D audio amplifier with digital input
Table 8.
Word
word1
word1
word1
word2
word2
word2
word2
word2
Equalizer control word construction
Section
Data
15
[14:4]
[3:0]
15
[14:11]
[10:8]
[7:1]
0
t1
11 mantissa bits of k1â
four exponent bits of k1â
t2
four mantissa bits of k2â
three exponent bits of k2â
k0â
s
12
G
Q1 = 0.27
(dB)
Q2 = 0.61
8
Q3 = 1.65
4
010aaa222
0
10
102
103
104
105
f (Hz)
Fig 7. Transfer functions for selected values of Q, the quality factor
12
G
(dB)
8
010aaa223
4
TFA9879
Product data sheet
0
10
102
103
104
105
f (Hz)
Fig 8. Transfer functions for selected values of fc, the center frequency
All information provided in this document is subject to legal disclaimers.
Rev. 02 â 15 October 2010
© NXP B.V. 2010. All rights reserved.
15 of 60
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