TDA8933T NXP Semiconductors, TDA8933T Datasheet - Page 24

• Manufacturer Part Number: TDA8933T
• Description: Audio Amplifiers 2X10W BTL CLASS D AMP+VOLCTRL
• Manufacturer: NXP Semiconductors

Specifications of TDA8933T

• Product: Class-D
• Output Power: 32 W
• Available Set Gain: 36 dB
• Common Mode Rejection Ratio (min): 75 dB
• Thd Plus Noise: 0.011 %
• Operating Supply Voltage: 25 V
• Supply Current: 0.6 mA
• Maximum Power Dissipation: 5000 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 16 Ohms
• Dual Supply Voltage: +/- 12.5 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: TDA8933T/N1,112

NXP Semiconductors
14. Application information
TDA8933_1
Preliminary data sheet
14.1 Output power estimation
P
P
The output power P
configurations can be estimated using
SE configuration:
BTL configuration:
Where:
The output power P
Figure 7
THD+N = 10 % as a function of the supply voltage for SE and BTL configurations at
different load impedances. The output power is calculated with: R
T
P
o 0.5 %
o 0.5 %
j
o 10 %
V
R
R
R
R
t
f
= 25 C), R
w(min)
osc
P
L
DSon
s
ESR
= series resistance output inductor (
= supply voltage V
= load resistance (
= oscillator frequency (Hz); 320 kHz typical with R
= equivalent series resistance SE capacitance ( )
= minimum pulse width (s); 80 ns typical
= drain-source on-state resistance (
=
=
=
and
------------------------------------------------------------------------------------------------------------------------------------------ -
-------------------------------------------------------------------------------------------------------------------------------------- -
1.25 P
Figure 8
----------------------------------------------------------
R
------------------------------------------------------ -
R
s
L
L
= 0.05 , R
+
+
R
2
o 0.5 %
o
o
DSon
at THD+N = 0.5 %, just before clipping, for the SE and BTL
at THD+N = 10 % can be estimated by:
show the estimated output power at THD+N = 0.5 % and
R
R
R
Rev. 01 — 15 May 2007
DDP1
L
DSon
+
L
R
ESR
s
+
- V
+
R
= 0.05
R
SSP1
s
ESR
2
8
(V) or V
R
R
Equation 2
1 t
L
L
1 t
–
and I
–
w min
w min
DDP2
O(ocp)
- V
and
f
= 2 A (minimum).
osc
f
SSP2
osc
Equation
osc
(V)
V
= 39 k
V
P
P
2
2
3.
Class-D audio amplifier
DSon
= 0.35
TDA8933
© NXP B.V. 2007. All rights reserved.
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