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
In a symmetrical supply the UBP is released when the unbalance of the supply voltage is
within 6 % of its starting value.
Table 6
Table 6.
Protection
OTP
OCP
WP
UVP
OVP
UBP
8.5 Diagnostic input and output
Whenever a protection is triggered, except for TF, pin DIAG is activated to LOW level (see
Table
6). An internal reference supply will pull-up the open-drain DIAG output to
approximately 2.4 V. This internal reference supply can deliver approximately 50 A.
Pin DIAG refers to pin CGND. The diagnostic output signal during different short
conditions is illustrated in
device into Fault mode.
Fig 5. Diagnostic output for different short-circuit conditions
8.6 Differential inputs
For a high common-mode rejection ratio and a maximum of flexibility in the application,
the audio inputs are fully differential. By connecting the inputs anti-parallel, the phase of
one of the two channels can be inverted, so that the amplifier can operate as a mono BTL
amplifier. The input configuration for a mono BTL application is illustrated in
In SE configuration it is also recommended to connect the two differential inputs in
anti-phase. This has advantages for the current handling of the power supply at low signal
frequencies and minimizes supply pumping (see also
TDA8932_2
Preliminary data sheet
shows an overview of all protection and the effect on the output signal.
Protection overview
Restart
When fault is removed
no
yes
yes
no
no
no
Figure
5. Using pin DIAG as input, a voltage < 0.8 V will put the
V
o
2.4 V
0 V
50 ms
50 ms
shorted load
Rev. 02 — 12 December 2006
Class-D audio amplifier
Every 100 ms
yes
no
no
yes
yes
yes
V
o
2.4 V
amplifier
restart
no restart
0 V
short to
supply line
001aad759
Section
14.8).
TDA8932
Figure
6.
© NXP B.V. 2006. All rights reserved.
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