|
|
PDF TDA8922B Data sheet ( Hoja de datos )
| Número de pieza | TDA8922B | |
| Descripción | 2 X 50 W class-D power amplifier | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TDA8922B (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
|
No Preview Available !
TDA8922B
2 × 50 W class-D power amplifier
Rev. 01 — 1 October 2004
www.DataSheet4U.com
Preliminary data sheet
1. General description
The TDA8922B is a high efficiency class-D audio power amplifier with very low
dissipation. The typical output power is 2 × 50 W.
The device is available in the HSOP24 power package and in the DBS23P through-hole
power package. The amplifier operates over a wide supply voltage range from ±12.5 V
to ±30 V and consumes a very low quiescent current.
2. Features
s Zero dead time switching
s Advanced current protection: output current limiting
s Smooth start-up: no pop-noise due to DC offset
s High efficiency
s Operating supply voltage from ±12.5 V to ±30 V
s Low quiescent current
s Usable as a stereo Single-Ended (SE) amplifier or as a mono amplifier in Bridge-Tied
Load (BTL)
s Fixed gain of 30 dB in Single-Ended (SE) and 36 dB in Bridge-Tied Load (BTL)
s High supply voltage ripple rejection
s Internal switching frequency can be overruled by an external clock
s Full short-circuit proof across load and to supply lines
s Thermally protected.
3. Applications
s Television sets
s Home-sound sets
s Multimedia systems
s All mains fed audio systems
s Car audio (boosters).
1 page  
Philips Semiconductors
TDA8922Bwww.DataSheet4U.com
2 × 50 W class-D power amplifier
Table 3:
Symbol
SGND1
VSSA1
PROT
VDDP1
BOOT1
OUT1
VSSP1
STABI
n.c.
VSSP2
OUT2
BOOT2
VDDP2
VSSD
Pin description …continued
Pin
TDA8922BTH TDA8922BJ
11 5
12 6
13 7
14 8
15 9
16 10
17 11
18 12
19 -
20 13
21 14
22 15
23 16
24 17
Description
signal ground for channel 1
negative analog supply voltage for channel 1
decoupling capacitor for protection (OCP)
positive power supply voltage for channel 1
bootstrap capacitor for channel 1
PWM output from channel 1
negative power supply voltage for channel 1
decoupling of internal stabilizer for logic supply
not connected
negative power supply voltage for channel 2
PWM output from channel 2
bootstrap capacitor for channel 2
positive power supply voltage for channel 2
negative digital supply voltage
8. Functional description
8.1 General
The TDA8922B is a two channel audio power amplifier using class-D technology.
The audio input signal is converted into a digital Pulse Width Modulated (PWM) signal via
an analog input stage and PWM modulator. To enable the output power transistors to be
driven, this digital PWM signal is applied to a control and handshake block and driver
circuits for both the high side and low side. In this way a level shift is performed from the
low power digital PWM signal (at logic levels) to a high power PWM signal which switches
between the main supply lines.
A 2nd-order low-pass filter converts the PWM signal to an analog audio signal across the
loudspeakers.
The TDA8922B one-chip class-D amplifier contains high power D-MOS switches, drivers,
timing and handshaking between the power switches and some control logic. For
protection a temperature sensor and a maximum current detector are built-in.
The two audio channels of the TDA8922B contain two PWMs, two analog feedback loops
and two differential input stages. It also contains circuits common to both channels such
as the oscillator, all reference sources, the mode functionality and a digital timing
manager.
The TDA8922B contains two independent amplifier channels with high output power, high
efficiency, low distortion and a low quiescent current. The amplifier channels can be
connected in the following configurations:
• Mono Bridge-Tied Load (BTL) amplifier
• Stereo Single-Ended (SE) amplifiers.
9397 750 13357
Preliminary data sheet
Rev. 01 — 1 October 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
5 of 32
5 Page 
Philips Semiconductors
TDA8922Bwww.DataSheet4U.com
2 × 50 W class-D power amplifier
9. Limiting values
Table 5: Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter
Conditions
Min
VP
IORM
supply voltage
repetitive peak current in
output pin
maximum output
current limiting
-
[1] 5
Tstg
Tamb
Tj
storage temperature
ambient temperature
junction temperature
−55
−40
-
[1] Current limiting concept. See also Section 13.6.
10. Thermal characteristics
Max Unit
±30 V
-A
+150
+85
150
°C
°C
°C
Table 6:
Symbol
Rth(j-a)
Rth(j-c)
Thermal characteristics
Parameter
Conditions
thermal resistance from junction to ambient
TDA8922BTH
in free air
TDA8922BJ
in free air
thermal resistance from junction to case
TDA8922BTH
TDA8922BJ
[1] See also Section 13.5.
11. Static characteristics
Typ
[1]
35
35
[1]
1.3
1.3
Unit
K/W
K/W
K/W
K/W
Table 7: Static characteristics
VP = ±26 V; fosc = 317 kHz; Tamb = 25 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min Typ
Supply
VP
Iq(tot)
supply voltage
total quiescent supply
current
no load; no filter; no
snubber network
connected
[1] ±12.5 ±26
- 50
Istb standby supply current
Mode select input; pin MODE
- 150
VI input voltage
[2] 0
-
II
input current
VI = 5.5 V
- 100
Vstb input voltage for
Standby mode
[2] 0
[3]
-
Vmute
input voltage for Mute
mode
[2] 2.2
[3]
-
Von input voltage for
Operating mode
[2] 4.2
[3]
-
Max Unit
±30 V
65 mA
500 µA
6V
300 µA
0.8 V
3.0 V
6V
9397 750 13357
Preliminary data sheet
Rev. 01 — 1 October 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
11 of 32
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet TDA8922B.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TDA8922 | 2 x 25 W class-D power amplifier | NXP Semiconductors |
| TDA8922B | 2 X 50 W class-D power amplifier | NXP Semiconductors |
| TDA8922C | 2 x 75 W class-D power amplifier | NXP Semiconductors |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |