TFA9881_1104 PHILIPS [NXP Semiconductors], TFA9881_1104 Datasheet - Page 20

• Manufacturer Part Number: TFA9881_1104
• Description: 3.4 W PDM input class-D audio amplifier
• Manufacturer: PHILIPS [NXP Semiconductors]

NXP Semiconductors
TFA9881
Product data sheet
Fig 11. THD+N 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
−3
i
i
i
−3
i
i
i
= 6 kHz.
= 1 kHz.
= 100 Hz.
= 6 kHz.
= 1 kHz.
= 100 Hz.
DDP
DDP
= 3.6 V, R
= 3.6 V, R
13.4 Curves measured in reference design (demonstration board)
10
10
−2
−2
All measurements were taken with V
off and slope normal, unless otherwise specified.
(1)
(3)
(2)
L
L
= 8 Ω, L
= 4 Ω, L
10
10
−1
−1
(1)
(2)
(3)
L
L
= 44 μH
= 20 μH
1
1
All information provided in this document is subject to legal disclaimers.
001aam634
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P
P
o
o
(W)
(W)
10
10
Rev. 2 — 1 April 2011
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
−3
i
i
i
−3
i
i
i
= 6 kHz.
= 1 kHz.
= 100 Hz.
DDP
= 6 kHz.
= 1 kHz.
= 100 Hz.
DDP
3.4 W PDM input class-D audio amplifier
= 5 V, R
= 5 V, R
clk
10
10
= 6.144 MHz, clip control off, DPSA
−2
−2
L
L
= 8 Ω, L
= 4 Ω, L
10
10
(1)
(3)
(2)
−1
−1
(1)
(3)
(2)
L
L
= 44 μH
= 20 μH
1
1
TFA9881
© NXP B.V. 2011. All rights reserved.
001aam636
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P
P
o
o
(W)
(W)
10
10
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