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PDF FPA6101 Data sheet ( Hoja de datos )
| Número de pieza | FPA6101 | |
| Descripción | 2.4W Stereo Audio Power Amplifier and Headphone Driver | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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September
FPA6101
2007
tm
2.4W Stereo Audio Power Amplifier and Headphone Driver
Features
■ Operating Voltage: VDD, PVDD, CVDD = 4.5V to 5.5V
HVDD = 3.0V to 3.6V
■ No Output Capacitors Required for Headphones
■ Supply Current
– IDD = 12mA at VDD = 5V (Amplifier Mode)
– IDD = 10mA at VDD = 5V (Headphone Mode)
■ Low Shutdown Current
■ Meets VISTA Requirements
■ Low Distortion
AMP mode
– THD+N = 56dB, RL = 4Ω, PO = 1.5W
– THD+N = 64dB, RL = 8Ω, PO = 0.9W
HP mode
– THD+N = 73dB, RL = 16Ω, PO = 125mW
– THD+N = 77dB, RL = 32Ω, PO = 88mW
– THD+N= 85dB, RL = 10kΩ, PO = 1.7Vrms
■ Integrated De-Pop Circuitry
■ Thermal and Over Current Protection
■ Internal Gain Setting
■ High Supply Voltage Ripple Rejection
■ Surface-Mount Packaging
– TSSOP-28P (with enhanced thermal pad)
– MLP-28P (with enhanced thermal pad) – Not yet
released
■ Lead Free Available (RoHS Compliant)
FPA6101
Audio
Codec
Stereo
Headphones
Stereo
Speakers
General Description
The FPA6101 is a monolithic integrated circuit combin-
ing a stereo power amplifier with a stereo capacitor-less
headphone amplifier in a space and cost efficient
package. The headphone amplifier is ground-referenced
to eliminate the output capacitors saving money and
PCB space.
The amplifier features over-current, de-pop and thermal-
shutdown protection. De-Pop reduces pops and clicks
during power up and when using the shutdown modes.
Thermal shut-down protects the amplifier from being
destroyed by over-temperature or short-circuit failure.
Internal gain setting is provided to simplify the audio
system design in notebook computer applications and
can result in fewer support components and a reduction
in PCB area. The FPA6101 is available in a TSSOP-28P
or MLP-28P package. Both packages provide space
saving and thermal efficiency.
Applications
■ Note Book PCs
■ LCD TVs and Monitors
■ Portable DVD, CD, or HDTV players
■ Portable Radios
■ Portable Games
Frequency Response
+0. 2
+190
+0. 1
Gain
-0
Vdd=5V
HVdd=3.3V
-0 .1 Rl=16Ohm
Ri=39KOhm
Cin=3.3uF
Po=28mW
HP mode
-0 .2
10 100
Phase
1k 10k
Frequency (Hz)
+185
+180
+175
+170
100k 200k
©2007 Fairchild Semiconductor Corporation
FPA6101 Rev. 1.5
www.fairchildsemi.com
1 page  
Block Diagram
INR_A
INL_A
Internal
Gain
Setting
10.5dB
AMP_EN
HP_EN
SD
BEEP
INR_H
SPK EN
HP EN
SD
BEEP
Detect
INL_H
CVDD
CP+
CP-
CGND
Charge
Pump
CVSS
ROUT+
–
+
ROUT-
LOUT+
–
+
LOUT-
BIAS
Rf(HP_R)
40kΩ
–
+
Rf(HP_R)
40kΩ
–
+
Power
Management
HVSS PGND GND
Figure 1.
HP_R
HP_L
HVDD
PVDD
VDD
©2007 Fairchild Semiconductor Corporation
FPA6101 Rev. 1.5
5
www.fairchildsemi.com
5 Page 
Typical Operating Characteristics (Continued)
10 Vdd =5V
Rl=8Ohm
Cin=2.2uF
BW<80KHz
AMP mode
1
F=20KHz
F=20Hz
10 Vdd =5V
Rl=8Ohm
Cin=2.2uF
Po=0.92W
BW<80KHz
AMP mode
1
0.1 F=1KHz
0.05
0.01
0.1 1
Output Power (W)
Figure 8. THD+n vs. Output Power
5
0.1 Left Channel
0.05 Right Channel
20 100
1k
Frequency (Hz)
10k 20k
Figure 9. THD+n vs. Frequency
+0 Vdd =5V
-10 Rl=8Ohm
Cin=2.2uF
-20 Po=0.92W
AMP mode
-30
-40
-50
-60
-70
-80
Right to Left
-90
Left to Right
-100
20
100 1k
Frequency (Hz)
10k 20k
Figure 10. Crosstalk vs. Frequency
100u
10u
Vdd =5V
Rl=8Ohm
Cin=2.2uF
A-weighted
1u AMP mode
20 100
1k
Frequency (Hz)
10k 20k
Figure 11. Output Noise Voltage vs. Frequency
+11
+10
+9
+8
+7
+6
10
Gain
+30
+25
Vdd =5V
Cin =2.2uF
Rl=8Ohm
Po=0.13W
AMP mode
+20
+15
+10
Phase
+5
+0
100 1k 10k
Frequency (Hz)
-5
100k 200k
Figure 12. Frequency Response
+0
Vdd =5V
-10 Rl=4Ohm (AMP)
-20
Rl=10KOhm(HP)
Cin=2.2uF (AMP)
-30 Po=1.5W(AMP)
-40
AMP (active) mode
HP Mode
-50
-60
Left(AMP) to Left(HP)
Right(AMP) to Right(HP)
-70
Left(AMP) to Right(HP)
-80
-90
-100
-110
-120
20
Right(AMP) to Left(HP)
100 1k
Frequency (Hz)
10k 20k
Figure 13. Crosstalk vs. Frequency
©2007 Fairchild Semiconductor Corporation
FPA6101 Rev. 1.5
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet FPA6101.PDF ] | |
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