AN10436 PHILIPS [NXP Semiconductors], AN10436 Datasheet - Page 30
AN10436
Manufacturer Part Number
AN10436
Description
TDA8932B/33(B) Class-D audio amplifier
Manufacturer
PHILIPS [NXP Semiconductors]
Datasheet
1.AN10436.pdf
(55 pages)
- Current page: 30 of 55
- Download datasheet (931Kb)
NXP Semiconductors
AN10436_1
Application note
This zobel damping network is quite effective for a voice coil inductance L
zobel damping network will lower the resonance peak current in the filter inductor by at
least 15 % to 40 % lowering the risk of unwanted inductor saturation.
Remark: Besides inductor saturation a tweeter might also benefit from a zobel network
since filter resonance can overstress the tweeter.
Table 6
Table 6.
A minimum zobel damping network C
The optimum damping resistors are equal for 6 Ω and 8 Ω speakers when using the filter
component values from
The resistor (R
with a 20 kHz unclipped sine wave.
Figure 27
Configuration
Single ended
Fig 27. Power dissipation as a function of supply voltage
(1) C
(2) C
(3) C
(4) C
(5) C
contains the optimum damping resistors for different capacitor values:
Z
Z
Z
Z
Z
shows the sine wave power dissipation (20 kHz) as a function of supply voltage.
Damping resistors for different capacitor values
= 47 nF / R
= 68 nF / R
= 100 nF / R
= 150 nF / R
= 220 nF / R
(W)
P
Z
2.5
1.5
0.5
) should be able to at least dissipate the power when driving the amplifier
2
1
0
10
Speaker
impedance (Ω)
-
-
4
-
-
Z
Z
Rev. 01 — 12 December 2007
Z
Z
Z
= 82 Ω
= 56 Ω
= 39 Ω
= 27 Ω
= 22 Ω
Table
4, which are calculated based on f
18
L
-
-
22
-
-
Z
LC
= 47 nF and R
(μH)
TDA8932B/33(B) Class-D audio amplifier
C
-
-
680
-
-
26
LC
(nF)
Z
= 82 Ω is strongly recommended.
C
47
68
100
150
220
Z
010aaa427
V
o
(nF)
P
= 40 kHz.
(5)
(4)
(3)
(2)
(1)
(V)
36
AN10436
© NXP B.V. 2007. All rights reserved.
E
< 10 L
R
82
56
39
27
22
Z
(Ω)
LC
30 of 55
. The
Related parts for AN10436
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
An IC Operational Transconductance Amplifier With Power Capability
Manufacturer:
INTERSIL [Intersil Corporation]
Datasheet:
Part Number:
Description:
General purpose CMOS timer
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.) with 16-byte FIFOs
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
Voltage regulator diodes
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
XA 16-bit microcontroller family 32K/512 OTP/ROM/ROMless, watchdog, 2 UARTs
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
5 V, 3.3 V and 2.5 V dual UART, 5 Mbit/s (max.), with 16-byte FIFOs
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
5 V, 3.3 V and 2.5 V UART with 32-byte FIFOs and infrared (IrDA) encoder/decoder
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
5V, 3.3 V and 2.5V dual UART, 5 Mbit/s (max.),with 32-byte FIFOs and infrared(IrDA) encoder/decoder
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
5 V, 3.3 V and 2.5 V quad UART, 5 Mbit/s (max.), with 64-byte FIFOs and infrared (IrDA) encoder/decoder
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
Single UART with I2C-bus/SPI interface, 64 bytes of transmit and receive FIFOs, IrDA SIR built-in support
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
Master I-2C - bus controller with UART interface
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
BTL stereo Class-D audio amplifier with I2S input
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
3.4 W PDM input class-D audio amplifier
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
TRIODE FOR USE AS GROUNDED GRID U.H.F. AMPLIFIER
Manufacturer:
PHILIPS [NXP Semiconductors]
Datasheet:
Part Number:
Description:
Specific Thales (NXP : BLA0912-250,112)
Manufacturer:
Philips Semiconductors