TDA8932BT/N2,118 NXP Semiconductors, TDA8932BT/N2,118 Datasheet - Page 25

IC AMP AUDIO 55W STER D 32SOIC

TDA8932BT/N2,118

Manufacturer Part Number
TDA8932BT/N2,118
Description
IC AMP AUDIO 55W STER D 32SOIC
Manufacturer
NXP Semiconductors
Type
Class Dr
Datasheet

Specifications of TDA8932BT/N2,118

Output Type
1-Channel (Mono) or 2-Channel (Stereo)
Package / Case
32-SOIC (7.5mm Width)
Max Output Power X Channels @ Load
55W x 1 @ 8 Ohm; 26.5W x 2 @ 4 Ohm
Voltage - Supply
10 V ~ 36 V, ±5 V ~ 18 V
Features
Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection
Mounting Type
Surface Mount
Product
Class-D
Output Power
55 W
Available Set Gain
36 dB
Common Mode Rejection Ratio (min)
75 dB
Thd Plus Noise
0.007 %
Operating Supply Voltage
22 V
Supply Current
145 mA
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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
935283477118
TDA8932BT-T
TDA8932BT-T
NXP Semiconductors
TDA8932B_4
Product 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 TDA8932B 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 10. 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. 04 — 18 December 2008
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 36
f
1000
680
470
-3dB
= 40 Hz
R3
100
k
001aad762
v(tot)
Figure
Class-D audio amplifier
can be calculated by
TDA8932B
f
2200
1500
1000
-3dB
10).
© NXP B.V. 2008. All rights reserved.
= 20 Hz
25 of 48
(7)
(8)

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