TFA9879_15 Datasheet, PDF (17/60 Pages) NXP Semiconductors – Mono BTL class-D audio amplifier for portable applications

NXP Semiconductors
TFA9879
Mono BTL class-D audio amplifier with digital input
Figure 10 shows the bass function for a range of attenuation and boost settings with a
sample rate of 48 kHz and a corner frequency of 272 Hz.
20
dB
10
010aaa650
0
−10
−20
10
10²
10³
10⁴
10⁵
f (Hz)
V_DDP = 3.7 V, 2 × 8 Ω BTL configuration, treble control = 0 dB, clip control on
Fig 10. Bass function in 2 dB steps; the treble control is set to flat
Figure 11 shows the treble function for a range of attenuation and boost settings with a
sample rate of 48 kHz and a corner frequency of 1630 Hz.
20
dB
10
010aaa649
0
−10
−20
10
10²
10³
10⁴
10⁵
f (Hz)
V_DDP = 3.7 V, 2 × 8 Ω BTL configuration, bass control = 0 dB, clip control on
Fig 11. Treble function in 2 dB steps; the bass control is set to flat
9.2.7 Muting
The TFA9879 support two muting options, which are controlled via the I²C-bus interface:
• Soft muting
• Hard muting
TFA9879
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 02 — 15 October 2010
© NXP B.V. 2010. All rights reserved.
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