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| TFA9815 Datasheet, PDF (14/26 Pages) NXP Semiconductors – Stereo full-bridge audio amplifier 2 x 17 W | |||
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NXP Semiconductors
TFA9815
Audio ampliï¬er 2 x 17 W
Table 10. Characteristics â¦continued
VP= 12 V;Tamb = 25 ËC; fosc = 550 kHz; typical application diagram Figure 12, unless otherwise speciï¬ed.
Symbol Parameter
Conditions
Min
Typ
Max Unit
Window Protection (WP)
VO
output voltage
HIGH-level
LOW-level
-
VDDA â 1 -
V
-
VSSA + 1 -
V
[1] Measured with respect to VSSD.
[2] Current limiting concept: in overcurrent condition no interruption of the audio signal in case of impedance drop.
12.2 Dynamic characteristics
Table 11. Switching characteristics
VP= 12 V;Tamb = 25 ËC; fosc = 550 kHz unless otherwise speciï¬ed.
Symbol Parameter
Conditions
Timing PWM output: pins OUT1 and OUT2
tr
tf
tw(min)
rise time
fall time
minimum pulse width
IO = 0 A
IO = 0 A
IO = 0 A
Min
Typ
Max
Unit
-
10
-
ns
-
10
-
ns
-
60
-
ns
12.3 AC characteristics measured in typical application
Table 12. AC characteristics measured in typical application
Symbol Parameter
Conditions
Po(RMS) RMS output power
VP = 15 V; RL = 8 â¦; THD = 10 %
VP = 12 V; RL = 8 â¦; THD = 10 %
VP = 12 V; RL = 6 â¦; THD = 10 %
VP = 12 V; RL = 4 â¦; THD = 10 %
THD+N total harmonic
distortion-plus-noise
Po = 1 W; fi = 1 kHz
ηpo
output power efï¬ciency
Po = 2 à 10 W at 8 â¦
Po = 2 à 18 W at 4 â¦
Gv(cl) closed-loop voltage gain
Vi = 100 mV (RMS); fi = 1 kHz
Vn(o)
output noise voltage
inputs shorted; AES17 brick-wall
S/N
signal-to-noise ratio
Vo = 10 V (RMS); Gv(cl) = 20 dB
SVRR
αcs
supply voltage ripple rejection
channel separation
Operating mode; fi = 1 kHz
Po = 1 W; fi = 1 kHz
Min Typ
15 16
9
10
12 13
17 18
[1] -
0.05
89 91
88 90
18.6 19.3
-
150
94 96
[2] 34
45
55 70
[1] THD+N is measured in a bandwidth of 20 Hz to 20 kHz, AES17, brick-wall.
[2] Minimum value determined by R5, R10, R17, R22 equalling +1 % and R7, R14, R18, R20 equalling â1 %.
Max Unit
-
W
-
W
-
W
-
W
0.1 %
-
%
-
%
21 dB
-
µV
-
dB
-
dB
-
dB
TFA9815_1
Preliminary data sheet
Rev. 01 â 16 December 2008
© NXP B.V. 2008. All rights reserved.
14 of 26
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