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TDA8933BTW Datasheet(PDF) 21 Page - NXP Semiconductors

Part # TDA8933BTW
Description  Class D audio amplifier
PDF  42 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

TDA8933BTW Datasheet(HTML) 21 Page - NXP Semiconductors

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TDA8933B_1
© NXP B.V. 2008. All rights reserved.
Preliminary data sheet
Rev. 01 — 23 October 2008
21 of 42
NXP Semiconductors
TDA8933B
Class D audio amplifier
[1]
RS is the total series resistance of an inductor and a ESR single ended capacitor in the application.
[2]
Output power is measured indirectly; based on RDSon measurement.
[3]
THD+N is measured in a bandwidth of 20 Hz to 20 kHz, AES17 brick wall.
[4]
B = 22 Hz to 20 kHz, AES17 brick wall.
[5]
14. Application information
14.1 Output power estimation
The output power Po at THD+N = 0.5 %, just before clipping, for the SE and the BTL
configurations can be estimated using Equation 2 and Equation 3.
Table 13.
BTL characteristics
VP = 25 V, RL = 16 Ω, fi = 1 kHz, fosc = 320 kHz, RS < 0.1 Ω [1] and Tamb = 25 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Po(RMS)
RMS output power
continuous time output power[2]
RL = 8 Ω; VP = 17 V
THD+N = 0.5 %, fi = 1 kHz
11.9
13.7
-
W
THD+N = 0.5 %, fi = 100 Hz
-
13.7
-
W
THD+N = 10 %, fi = 1 kHz
15.4
17.1
-
W
THD+N = 10 %, fi = 100 Hz
-
17.1
-
W
RL = 16 Ω; VP = 25 V
THD+N = 0.5 %, fi = 1 kHz
14.9
16.5
-
W
THD+N = 0.5 %, fi = 100 Hz
-
16.5
-
W
THD+N = 10 %, fi = 1 kHz
18.9
20.6
-
W
THD+N = 10 %, fi = 100 Hz
-
20.6
-
W
THD+N
total harmonic
distortion-plus-noise
Po = 1 W
[3]
fi = 1 kHz
-
0.01
0.1
%
fi = 6 kHz
-
0.04
0.1
%
Gv(cl)
closed-loop voltage gain
35
36
37
dB
|Zi|
input impedance
differential
35
50
-
k
Ω
Vn(o)
output noise voltage
Ri = 0 Ω
Operating mode
[4] -
100
150
µV
Mute mode
[4] -
70
100
µV
VO(mute)
mute output voltage
Mute mode; Vi = 1 V (RMS)
-
100
-
µV
CMRR
common mode rejection
ratio
Vi(cm) = 1 V (RMS)
-
75
-
dB
ηpo
output power efficiency
Po = 17 W; VP = 17 V; RL = 8 Ω
[5] 89
91
-
%
Po = 21 W; VP = 25 V; RL = 16 Ω
92
94
-
%
η
po
2P
o
⋅
2P
o
⋅
P
+
-----------------------
=



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