Audio Amplifiers 2X15W BTL CLASS D AMP+VOLCTRL

TDA8932T

Manufacturer Part NumberTDA8932T
DescriptionAudio Amplifiers 2X15W BTL CLASS D AMP+VOLCTRL
ManufacturerNXP Semiconductors
TDA8932T datasheet
 


Specifications of TDA8932T

ProductClass-DOutput Power50 W
Available Set Gain36 dBCommon Mode Rejection Ratio (min)56 dB
Thd Plus Noise0.015 %Operating Supply Voltage22 V
Maximum Power Dissipation5000 mWMaximum Operating Temperature+ 85 C
Mounting StyleSMD/SMTAudio Load Resistance8 Ohms
Dual Supply Voltage+/- 11 VInput Signal TypeDifferential
Minimum Operating Temperature- 40 COutput Signal TypeDifferential, Single
Supply TypeSingle or DualSupply Voltage (max)36 V
Supply Voltage (min)10 VOutput Type1-Channel Mono or 2-Channel Stereo
Package / CaseSOIC-32Lead Free Status / RoHS StatusLead free / RoHS Compliant
Other namesTDA8932T/N1,112  
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NXP Semiconductors
The 3 dB cut-off frequency is equal to:
f
=
3dB
Where:
f
= 3 dB cut-off frequency [Hz]
-3dB
R
= load impedance [ ]
L
Cse = single-ended capacitance [F]; see
Table 15
or 20 Hz 3 dB cut-off frequency.
Table 15.
Impedance ( )
4
6
8
14.5 Gain reduction
The gain of the TDA8932 is internally fixed at 30 dB for SE (or 36 dB for BTL). The gain
can be reduced by a resistive voltage divider at the input (see
Fig 9. Input configuration for reducing gain
When applying a resistive divider, the total closed-loop gain G
Equation 8
G
=
v tot
Where:
G
v(tot)
G
= closed-loop voltage gain, fixed at 30 dB for SE [dB]
v(cl)
R
= equivalent resistance, R3 and Z
EQ
R1 = series resistor [ ]
R2 = series resistor [ ]
TDA8932_2
Preliminary data sheet
1
---------------------------------- -
2
R
Cse
L
shows an overview of the required SE capacitor values in case of 60 Hz, 40 Hz
SE capacitor values
Cse ( F)
f
= 60 Hz
-3dB
680
470
330
R1
audio in
R2
and
Equation
9:
R
EQ
G
+
20
log
----------------------------------------- -
v cl
R
+
R1
+
R2
EQ
= total closed-loop voltage gain [dB]
Rev. 02 — 12 December 2006
TDA8932
Class-D audio amplifier
Figure 28
f
= 40 Hz
f
-3dB
-3dB
1000
2200
680
1500
470
1000
Figure
9).
470 nF
100
R3
k
470 nF
001aad762
can be calculated by
v(tot)
[ ]
i
© NXP B.V. 2006. All rights reserved.
(7)
= 20 Hz
(8)
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