|
|
PDF LX1722 Data sheet ( Hoja de datos )
| Número de pieza | LX1722 | |
| Descripción | Class-D Stereo Power Amplifier Controller | |
| Fabricantes | Microsemi | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LX1722 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
INTEGRATED PRODUCTS
AudioMAX™
LX1721 / 1722
www.DataSheet4U.com
Class-D Stereo Power Amplifier Controller
PRODUCTION
DESCRIPTION
The LX1721/1722 is a monolithic high A complete audio amplifier module is
performance Class-D stereo controller IC available to quickly evaluate the LX1721
designed for high efficiency or space or LX1722 stereo controller. Simply
constrained audio requirements such as connect the amplifier to the power source,
portable or battery operated products, audio signal, and speakers. Reference
automotive amplifiers, and multi-channel designs support a variety of requirements
multimedia computer and video game including multi channel systems,
applications. This high frequency, full subwoofers, satellite / subwoofer com-
audio bandwidth switching power binations and various speaker loads (2Ω,
amplifier controller offers dramatically 4Ω, 8Ω). The versatile amplifier solution
improved performance over Linfinity’s can easily be adjusted for frequency
previous generation amplifier products. response, optimized for efficiency and
Enhancements include higher output performance, or designed to minimize
power, better SNR, lower noise floor, and PCB area and component count. The
reduced THD. Combined with output LX1721/1722 is available in a space
power MOSFET’s and an output filter, the saving 44-pin QSOP package.
LX1721/1722 is a complete Class-D audio (Continued Next Page)
solution.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
Channel
1
Channel 2
7V - 25V
IN +
IN -
LX1722
Stereo
IN +
IN -
CLOCK
PRODUCT HIGHLIGHT
FETs
Left
Output Power vs. Supply Voltage
1kHz, 4Ω, THD+N=1%
FETs
Right
2Ω, 4Ω, 8Ω
Channel 3
LX1711
Mono
IN +
IN -
FETs
Subwoofer
2.1 Audio Amplifier
Configuration
KEY FEATURES
Integrated Switching Class-D
Stereo Controller IC
Full 20Hz-20kHz Audio
Bandwidth
High Fidelity (LX1721) Or
High Power (LX1722)
Versions Available
Single Supply Operation
THD+N <0.06% Typical
(1Wrms, 1kHz, 4Ω)
Maximum Efficiency 80%-
85%
Output Power >60Wrms per
Channel (LX1722, 4Ω, 1%
THD+N)
PSRR –70dB Typical
Differential Input To Minimize
Noise Effects
Supports Multi-Channel
Systems
Complete LXE1721or
LXE1722 Amplifier Evaluation
Module Available
44-Pin QSOP Package
APPLICATIONS
Multimedia Speakers
Surround Sound Game
Systems
Notebook Computers
Desktop Computers
Automotive Amplifiers And
Head units
Battery Operated Equipment
(Megaphone, Public Address
System)
Portable Audio (Boom Box)
Wireless Speakers
High Power Subwoofer
Automotive Audio Systems
Home Theatre
Copyright 2001
Rev. 1.1,2003-06-10
PACKAGE ORDER INFO
TJ (°C)
VDD
Plastic QSOP
DB 44-Pin
-20 to 70
7V – 15V
LX1721CDB
-20 to 70
7V – 25V
LX1722CDB
Note: Available in Tape & Reel.
Append the letter “T” to the part number. (i.e. LX1722CDBT)
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
1 page  
INTEGRATED PRODUCTS
AudioMAX™
LX1721 / 1722
www.DataSheet4U.com
Class-D Stereo Power Amplifier Controller
PRODUCTION
ELECTRICAL CHARACTERISTICS (CONTINUED)
Parameter
Symbol
Test Conditions
LX1721 / 1722
Min Typ Max
Units
Current Limit Comparator
Voltage Sense Threshold
190 210
230 mV
Blanking Pulse Delay
500 ‘ns
Response Time
IUM Pulses required to Current Limit
Latch
Consecutive Clear Pulses required to
reset IUM counter
Reference Voltage Section
Excluding blanking pulse
250
44
22
‘ns
4 ‘cycles
2 ‘cycles
Initial Accuracy (VREF)
5.0
Voltage Stability (VREF)
± 50
± 100
‘mV
Initial Accuracy (V25)
2.5
Voltage Stability (V25)
Temperature Stability
Line Regulation
Load Regulation
Under Voltage Lockout Section
TA = 0OC to 70OC
VDD = 9V to 15V
IOUT = 0 to 10mA
± 25
2
0.5
5
± 50 mV
5 ‘mV
‘mV
‘mV
Start Threshold Voltage
6V
UV Lockout Hysteresis
250 mV
UVLO Delay To Output Enable
62,500
clkcyc
Supply Current
Sleep Current
Operating Current
Sleep to Output Enable
SLEEP Input = 0V, TA = 25OC
SLEEP Input = 2V, VIN = 15V,
No MOSFETs connected
30
8
62,500
µA
11 ‘mA
clkcyc
Sleep Threshold
1.45 1.6 1.75 V
Mute Section
Mute Threshold
1.2 1.35 1.5 V
Output Drivers For N-Channel MOSFETs
NFET Drivers, Low Level Voltage
NFET Drivers, High Level Voltage
VOL
ISINK = 3mA
ISINK = 100mA
ISOURCE = 3mA, CN = 5.2V
VOH
applied externally
ISOURCE = 100mA, CN = 5.2V
applied externally
30 100 ‘mV
0.3 1.0 V
30 100 ‘mV
0.3 1.0 V
Output Drives For P-Channel MOSFETs
PFET Drivers, Low Level Voltage
VOL
ISINK = 3mA
ISINK = 100mA
30 100 ‘mV
0.5 1.0 V
PFET Drivers, High Level Voltage
ISOURCE = 3mA, CP = 5.2V
VOH
(applied externally)
ISOURCE = 100mA, CP = 5.2V
(applied externally)
30 100 ‘mV
0.5 1.0 V
Note 2: The LX1721 / 22CDB is guaranteed to meet performance specifications from 0° to 70°C. Specifications over the -20° to 0°C operation temperature
range are assured by design, characterization, and statistical process control.
Copyright 2001
Rev. 1.1,2003-06-10
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
5 Page 
INTEGRATED PRODUCTS
AudioMAX™
LX1721 / 1722
www.DataSheet4U.com
Class-D Stereo Power Amplifier Controller
PRODUCTION
CHARACTERISTIC CURVES (CONTINUED)
+10 dx=-2.9880 kHz
+0
dy=-1.969 dB
-10
-20
-30
-40
-50
-60
-70
-80
-90
--9964..0-1171090
-110
-120
-130
-140
-15020
50 100
200
500 .973913k2k
Frequency (Hz)
2k 3.96192k5k
10k 20k
FIGURE 11 – NOISE FLOOR FFT
VIN = 25V
RL = 4Ω
10Hz – 22kHz Bandwidth
A-Weighted
90%
85%
80%
75%
70%
65%
60%
55%
50%
45%
0
5 10 15 20 25 30
Output Power (W)
8Ω 4Ω 2Ω
FIGURE 12 – EFFICIENCY VS. OUTPUT
POWER
VIN = 15V
fIN = 1kHz
Power Supply Rejection Ratio (PSRR)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
10
100
1000
10000
Frequency (Hz)
100000
15V+1,Left
15V+1,Right
15V-1,Left
15V-1,Right
FIGURE 13 – POWER SUPPLY REJECTION
RATIO (PSSR)
PO = 1WRMS
RL = 4Ω
Copyright 2001
Rev. 1.1,2003-06-10
Microsemi
Linfinity Microelectronics Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet LX1722.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LX1720 | SWITCHING CLASS-D/ STEREO POWER AMPLIFIER CONTROLLER IC |  Microsemi Corporation |
| LX1720-01CDB | SWITCHING CLASS-D/ STEREO POWER AMPLIFIER CONTROLLER IC | Microsemi Corporation |
| LX1721 | Class-D Stereo Power Amplifier Controller | Microsemi |
| LX1722 | Class-D Stereo Power Amplifier Controller | Microsemi |
| 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 |