TFA9879 NXP Semiconductors, TFA9879 Datasheet - Page 48

• Manufacturer Part Number: TFA9879
• Description: The TFA9879 contains a processor that supports a range of sound processing featuresincluding a 5-band parametric equalizer, separate bass and treble control, a dynamicrange compressor, soft clip control and volume control
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TFA9879
Product data sheet
Fig 19. Total harmonic distortion-plus-noise as a function of output power
THD+N
THD+N
(%)
(%)
10
10
10
(1) f
(2) f
(3) f
10
10
10
(1) f
(2) f
(3) f
a. V
c. V
10
10
10
10
−1
−2
−3
−1
−2
−3
1
1
2
10
2
10
−2
i
i
i
−2
i
i
i
= 6 kHz.
= 1 kHz.
= 100 Hz.
= 6 kHz.
= 1 kHz.
= 100 Hz.
DDP
DDP
= 3.7 V, R
= 3.7 V, R
15.6 Curves measured in reference design (demonstration board)
(2)
10
10
−1
−1
All measurements were taken with V
high-pass filter off, unless otherwise specified.
(1)
(3)
L
L
= 8 Ω
= 4 Ω
(2)
(1)
(3)
1
1
P
P
All information provided in this document is subject to legal disclaimers.
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Mono BTL class-D audio amplifier with digital input
DDD
THD+N
THD+N
(%)
(%)
10
10
10
(1) f
(2) f
(3) f
10
10
10
(1) f
(2) f
(3) f
b. V
d. V
10
10
10
10
= 1.8 V, f
−1
−2
−3
−1
−2
−3
1
1
2
10
2
10
−2
i
i
i
−2
i
i
i
= 6 kHz.
= 1 kHz.
= 100 Hz.
DDP
= 6 kHz.
= 1 kHz.
= 100 Hz.
DDP
= 5 V, R
= 5 V, R
s
= 48 kHz, clip control on and the
10
10
L
L
−1
−1
= 8 Ω
= 4 Ω
(1)
(2)
(3)
(1)
(2)
(3)
1
1
TFA9879
© NXP B.V. 2010. All rights reserved.
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