|
|
PDF PAM8905 Data sheet ( Hoja de datos )
| Número de pieza | PAM8905 | |
| Descripción | 1.9W Class-D Audio Amplifier | |
| Fabricantes | Diodes | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de PAM8905 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
|
No Preview Available !
A Product Line of
Diodes Incorporated
1.9W Class-D Audio Amplifier with Integrated
Boost Converter and Battery Tracking AGC
PAM8905
Description
Pin Assignments
The PAM8905 is a high efficiency Class-D audio power amplifier with
an integrated boost converter. It drives up to 1.9W (1% THD+N) into
an 8Ω speaker. With 85% typical efficiency, the PAM8905 helps
extend battery life when playing audio.
12 3
A PVDD SW BGND
The built-in boost converter generates the voltage rail for the output
stage. This provides a louder audio output than a stand-alone
amplifier connected directly to the battery. It also maintains a
consistent loudness, regardless of battery voltage.
The PAM8905 features battery tracking AGC function which adjusts
the Class-D gain to limit battery current at lower battery voltage.
B OUT+
AGC
VBAT
C OUT-
EN
IN+
D PGND AGND
IN-
(TOP VIEW)
PAM8905 features DC input protection and all outputs are fully
protected against output-to-output shorts. The PAM8905 is available
in U-WLB1520-12 package.
Features
Built-In Battery Tracking Automatic Gain Control (AGC)
High Efficiency Integrated Boost Converter Over 85%
1.9W into an 8Ω Load from a 3.6V Supply
Operates from 2.8V to 5.2V
Efficient Class-D Prolongs Battery Life
Minimized ON/OFF Pop Noise
Superior Low Noise
High PSRR
DC Input Protection
Auto-Recovery Short-Circuit Protection
Thermal Shutdown
Available in U-WLB1520-12 Package
Applications
Cell Phones
PDA
GPS
Portable Electronics
Speakers
Typical Applications Circuit
2.8V to 5.2V
VBAT
10uF
Audio Input
AGC
2.2uH
VBAT
EN
IN+
IN-
AGC
AGND
SW PVDD
AGND
OUT+
OU T-
PGND
10uF ~22uF
PAM8905
Document number: DS37026 Rev. 2 - 2
1 of 9
www.diodes.com
May 2015
© Diodes Incorporated
1 page  
A Product Line of
Diodes Incorporated
1.9W Class-D Audio Amplifier with Integrated
Boost Converter and Battery Tracking AGC
PAM8905
Performance Characteristics (@VBAT=3.6V, AGC=GND, TA = +25°C, RL=8Ω+33µH, unless otherwise specified.)
THD+N Vs. Output Power (RL=8Ω)
THD+N Vs. Output Power (RL=4Ω)
20
f=100Hz/1kHz/10kHz
(Re10d/Pink/Blue)
5
2
1
% 0.5
0.2
0.1
0.05
0.02
0.01
1m
2m
5m 10m 20m
50m 100m 200m
W
500m
1
24
THD+N Vs. Frequency (RL=8Ω)
10
5
2
1
% 0.5
Po=0.3W/0.5W/1W
(Red/Pink/Blue)
0.2
0.1
0.05
0.03
20
50
100
200
500
Hz
1k
2k
5k 10k 20k
20
10 f=100Hz/1kHz/10kHz
5 (Red/Pink/Blue)
2
1
% 0.5
0.2
0.1
0.05
0.02
0.01
1m
2m
5m 10m 20m
50m 100m 200m
W
500m 1
2
58
THD+N Vs. Frequency (RL=4Ω)
10
Po=0.3W/0.5W/1W
5
(Red/Pink/Blue)
2
1
% 0.5
0.2
0.1
0.05
0.03
20
50
100
200
500
Hz
1k
2k
5k 10k 20k
PSRR Vs. Frequency(RL=8Ω)
+0T T T T T T T T T T T
-10
AGC=GND
-20
-30
-40
-50
d
B
-60
-70
-80
-90
-100
-110
20
50
100
200
500
Hz
1k
2k
5k 10k 20k
PSRR Vs. Frequency(RL=4Ω)
+0T T T T T T T T T T T T
-10 AGC=GND
-20
-30
-40
-50
d
B
-60
-70
-80
-90
-100
-110
20
50
100
200
500
Hz
1k
2k
5k 10k 20k
PAM8905
Document number: DS37026 Rev. 2 - 2
5 of 9
www.diodes.com
May 2015
© Diodes Incorporated
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet PAM8905.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| PAM8901 | 25mW TRUE CAP FREE STEREO HEADPHONE AMPLIFIER | Diodes |
| PAM8902 | MONO CLASS-D AUDIO AMPLIFIER | Diodes |
| PAM8902A | MONO CLASS-D AUDIO AMPLIFIER | Diodes |
| PAM8902H | MONO CLASS-D AUDIO AMPLIFIER | Diodes |
| 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 |