Philips TDA8920B, Лист данных продукта

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TDA8920B_2 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet Rev. 02 — 07 November 2005 15 of 34
Philips Semiconductors
TDA8920B
2
×
100 W class-D power amplifier
12.3 Mono BTL application
[1] R
sL
is the series resistance of inductor of low-pass LC filter in the application.
[2] Output power is measured indirectly; based on R
DSon
measurement. See also Section 13.3 .
[3] Total harmonic distortion is measured in a bandwidth of 22 Hz to 20 kHz, using an AES17 20 kHz brickwall filter. Maximum limit is
guaranteed but may not be 100 % tested.
[4] V
ripple
= V
ripple(max)
= 2 V (p-p); R
s
= 0
Ω
.
[5] B = 22 Hz to 20 kHz, using an AES17 20 kHz brickwall filter.
[6] B = 22 Hz to 20 kHz, using an AES17 20 kHz brickwall filter; independent of R
s
.
[7] V
i
= V
i(max)
= 1 V (RMS); f
i
= 1 kHz.
13. Application information
13.1 BTL application
When using the power amplifier in a mono BTL application the inputs of both channels
must be connected in parallel and the phase of one of the inputs must be inverted (see
Figure 6 ). In principle the loudspeaker can be connected between the outputs of the two
single-ended demodulation filters.
Table 10: Mono BTL application characteristics
V
P
=
±
27 V; R
L
= 8
Ω
; f
i
= 1 kHz; f
osc
= 317 kHz; R
sL
< 0.1
Ω
[1]
; T
amb
= 25
°
C; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
P
o
output power R
L
= 6
Ω
; V
P
=
±
27 V
[2]
THD = 0.5 % - 174 - W
THD = 10 % - 210 - W
R
L
= 8
Ω
; V
P
=
±
27 V
[2]
THD = 0.5 % - 138 - W
THD = 10 % - 173 - W
THD total harmonic distortion P
o
= 1 W
[3]
f
i
= 1 kHz - 0.02 0.05 %
f
i
= 6 kHz - 0.03 - %
G
v(cl)
closed loop voltage gain 35 36 37 dB
SVRR supply voltage ripple rejection operating
[4]
f
i
= 100 Hz - 80 - dB
f
i
= 1 kHz 70 80 - dB
mute; f
i
= 100 Hz
[4]
- 80 - dB
standby; f
i
= 100 Hz
[4]
- 80 - dB

Z
i

input impedance 22 34 - k
Ω
V
n(o)
noise output voltage operating
R
s
= 0
Ω
[5]
- 300 -
µ
V
mute
[6]
- 220 -
µ
V
V
o(mute)
output signal in mute
[7]
- 200 -
µ
V
CMRR common mode rejection ratio V
i(CM)
= 1 V (RMS) - 75 - dB