TDA8932T NXP Semiconductors, TDA8932T Datasheet - Page 26
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TDA8932T
Manufacturer Part Number
TDA8932T
Description
Audio Amplifiers 2X15W BTL CLASS D AMP+VOLCTRL
Manufacturer
NXP Semiconductors
Datasheet
1.TDA8932TN1112.pdf
(45 pages)
Specifications of TDA8932T
Product
Class-D
Output Power
50 W
Available Set Gain
36 dB
Common Mode Rejection Ratio (min)
56 dB
Thd Plus Noise
0.015 %
Operating Supply Voltage
22 V
Maximum Power Dissipation
5000 mW
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Audio Load Resistance
8 Ohms
Dual Supply Voltage
+/- 11 V
Input Signal Type
Differential
Minimum Operating Temperature
- 40 C
Output Signal Type
Differential, Single
Supply Type
Single or Dual
Supply Voltage (max)
36 V
Supply Voltage (min)
10 V
Output Type
1-Channel Mono or 2-Channel Stereo
Package / Case
SOIC-32
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
TDA8932T/N1,112
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
TDA8932T
Manufacturer:
PHILIPS
Quantity:
9
Part Number:
TDA8932T
Manufacturer:
NXP/恩智浦
Quantity:
20 000
Company:
Part Number:
TDA8932T/N1
Manufacturer:
EPSON
Quantity:
6
Part Number:
TDA8932T/N1
Manufacturer:
NXP/恩智浦
Quantity:
20 000
Part Number:
TDA8932T/N1,118
Manufacturer:
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Quantity:
20 000
Part Number:
TDA8932T/N1.518
Manufacturer:
NXP/恩智浦
Quantity:
20 000
NXP Semiconductors
TDA8932_2
Preliminary data sheet
14.5 Gain reduction
The 3 dB cut-off frequency is equal to:
Where:
Table 15
or 20 Hz 3 dB cut-off frequency.
Table 15.
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
When applying a resistive divider, the total closed-loop gain G
Equation 8
Where:
G
Impedance ( )
4
6
8
f
Fig 9. Input configuration for reducing gain
–
v tot
f
R
Cse = single-ended capacitance [F]; see
G
G
R
R1 = series resistor [ ]
R2 = series resistor [ ]
3dB
-3dB
L
EQ
v(tot)
v(cl)
= load impedance [ ]
=
= equivalent resistance, R3 and Z
= 3 dB cut-off frequency [Hz]
=
= closed-loop voltage gain, fixed at 30 dB for SE [dB]
= total closed-loop voltage gain [dB]
---------------------------------- -
2
shows an overview of the required SE capacitor values in case of 60 Hz, 40 Hz
G
SE capacitor values
and
v cl
R
1
L
+
Equation
20
Cse
log
Rev. 02 — 12 December 2006
Cse ( F)
f
680
470
330
audio in
-3dB
----------------------------------------- -
R
9:
EQ
= 60 Hz
+
R
R1
EQ
+
R1
R2
R2
i
[ ]
470 nF
470 nF
Figure 28
f
1000
680
470
-3dB
= 40 Hz
R3
100
k
001aad762
v(tot)
Figure
Class-D audio amplifier
can be calculated by
f
2200
1500
1000
-3dB
9).
TDA8932
© NXP B.V. 2006. All rights reserved.
= 20 Hz
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