|
|
PDF CRD4412 Data sheet ( Hoja de datos )
| Número de pieza | CRD4412 | |
| Descripción | 2 x 15 W Digital Power Stage Reference Design | |
| Fabricantes | Cirrus Logic | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de CRD4412 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
CRD4412
2 x 15 W CS4412 Digital Power Stage Reference Design
Features
Pre-Configured for Stereo Full-Bridge
Operation
– Delivers 15 W/Ch into 8 Ω at 10 % THD+N
Easily Configurable for Mono Parallel Full-
Bridge Operation
– Delivers 30 W into 4 Ω at 10 % THD+N
Directly Connects to CRD4525 Digital Amplifier
Reference Design
– Implements a 2.1 Configuration
Flexible I/O Provided
– PWM Logic Level Signal Inputs
– CS4412 Error and Warning Signals
Operates from +9 V to +18 V and +3.3 V
Demonstrates Recommended Layout and
Grounding Arrangements
Implements Recommended PWM Output
Filtering
Description
The CRD4412 demonstrates the CS4412 digital ampli-
fier power stage. This reference design is pre-
configured as a two-channel full-bridge power stage
which delivers 15 W per channel into 8 Ω loads using a
single +18 V supply. The design can be easily config-
ured to operate as a single channel parallel full-bridge
power stage capable of delivering 30 W into a 4 Ω load
from an +18 V supply. The CRD4412 can be powered
from +9 V to +18 V
The CRD4412 is designed to operate in conjunction
with the CRD4525. When connected, the combination
implements a 2.1 configuration with the CRD4412 oper-
ating in mono parallel full-bridge mode.
The CRD4412 can also be operated without an at-
tached CRD4525. In this configuration, all input/output
connections are achieved through the CRD4412 inter-
face header.
The PWM audio power outputs are routed through an
inductor/capacitor 2nd order low-pass filter (LPF) to re-
move high frequency components from the output
signal, effectively converting it from digital to analog.
ORDERING INFORMATION
CRD4412
CS4412 Reference Design
Mono
Parallel
Full-Bridge
Right PWM
Left PWM
Stereo
Full-Bridge
Over Current Error
Under Voltage/Temp Error
Thermal Warning
Power
Reset
CS4412
Output
Filter
Output
Filter
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2006
(All Rights Reserved)
DECEMBER '06
DS749RD1
1 page  
CRD4412
2. OPERATING INSTRUCTIONS
The CRD4412 is designed to connect directly to the CRD4525 digital power amplifier reference design, and
to interface with external signal sources. See the following sections for operation details with and without a
CRD4525.
Note that the CRD4412 and CRD4525 must be connected and disconnected from one another while power
is not applied to the CRD4525.
2.1 Operation With CRD4525
When the CRD4412 is attached to a CRD4525 via the CRD4412 interface header and the CRD4525
FlexGUI is launched, the CS4525 is automatically configured to enable its bass manager and route the sub-
woofer channel to the CRD4412. The CRD4412 amplifies the subwoofer signal in mono parallel full-bridge
mode. Together, the CRD4412 and CRD4525 implement a 2.1 configuration.
To operate the CRD4412 and CRD4525 in this configuration:
1. Download and install the FlexGUI software from www.cirrus.com/msasoftware.
2. Connect the CRD4412 to the CRD4525 via the CRD4412 interface header.
3. Connect the CRD4525 to a host PC using the supplied USB cable.
4. Connect the 8 Ω stereo speakers to the speaker terminals on the CRD4525.
5. Wire the two red-terminal speaker outputs together on the CRD4412 as shown in Figure 2.
6. Wire the two black-terminal speaker output together on the CRD4412 as shown in Figure 2.
7. Connect the 4 Ω mono subwoofer between the red and black speaker terminals on the CRD4412.
8. Place a shunt across pins 2 and 3 of J1 to select mono mode.
9. Place a shunt across pins 1 and 2 of J4 to route the CS4412 thermal warning signal to the CS4525 ex-
ternal thermal warning input.
10. Connect an input source to the S/PDIF or analog input connectors.
11. Plug the input to the +18 V power supply (included with the CRD4525) into an available power outlet.
12. Plug the output of the +18 V power supply into the power input connector on the CRD4525.
13. Launch the FlexGUI software and select the CRD4525 + CRD4412 combination from the board selec-
tion list if necessary. The GUI will load and be displayed.
14. Un-check the “Power Down CS4525” check box to power-up the CS4525. In this state, the CRD4525
and CRD4412 will convert and amplify the content present on the optical S/PDIF input.
2.2 Stand-Alone Operation
The CRD4412 may be operated alone, without a connected CRD4525. In this mode of operation, all signals
and power are supplied to the CRD4412 through the CRD4412 interface header.
To operate the CRD4412 in this configuration:
1. Connect ground to pins 7, 9, 11, 13, 15, and 16 of J2.
2. Connect a +3.3 V source to pin 2 of J2, but do not apply power.
3. Connect a +9 V to +18 V source to pins 17, 18, 19, and 20 of J2 but do not apply power.
4. Connect a reset input signal to pin 14 of J2.
5. Connect logic-level PWM input signals to pins 8 and 10 of J2. For mono mode, it is only necessary to
connect a PWM input signal to pin 10 of J2.
6. Place a shunt across 2 pins of J1 to select stereo or mono mode as desired.
7. Connect the outputs and speaker load as discussed in Section 1.5 on page 4.
8. Apply +3.3 V and +9 V to +18 V power.
9. Drive the reset input low and then high to reset the CS4412.
DS749RD1
5
5 Page 
Figure 6. Topside Copper Layer
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet CRD4412.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| CRD4412 | 2 x 15 W Digital Power Stage Reference Design | Cirrus Logic |
| CRD44130-FB | 20 W x 2 + 40 W x 1 PWM Amplifier Reference Design | Cirrus Logic |
| 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 |