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PDF APA2051 Data sheet ( Hoja de datos )
| Número de pieza | APA2051 | |
| Descripción | 2.4W Stereo Audio Power Amplifier | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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APA2051
2.4W Stereo Audio Power Amplifier (with Gain Setting) & Capfree Headphone Driver
Features
• Operating Voltage
– HVDD= 3.0~3.6V
– V = 4.5~5.5V
DD
• No Output Capacitor at Headphone Amplifier
Required
• Meeting VISTA Requirement
• Low Distortion
AMP Mode
–
THD+N=56dB,
at
V
DD
=
5V,
R
L
=
4Ω,
P =1.5W
O
–
THD+N=64dB,
at
V
DD
=
5V,
R
L
=
8Ω,
P =0.9W
O
HP Mode
– THD+N=73dB, at HVDD=3.3V, RL=16Ω
PO=125mW
– THD+N=77dB, at HVDD=3.3V, RL=32Ω,
P =88mW
O
–
THD+N=85dB,
at
HV =3.3V,
DD
RL=10kΩ,
VO=1.7Vrms
• Output Power at 1% THD+N
– 1.9W, at VDD = 5V, AMP Mode, RL = 4Ω
– 1.2W, at VDD = 5V, AMP Mode, RL = 8Ω
• at 10% THD+N
–2.4W
at
V
DD
=
5V,
AMP
Mode,
R
L
=
4Ω
–1.5W at VDD = 5V, AMP Mode, RL = 8Ω
• Depop Circuitry Integrated
• Internal 19-Steps Gain Setting for Flexible Appli
cation
• Thermal Shutdown Protection and Over-Current
Protection Circuitry
• High Supply Voltage Ripple Rejection
• Surface-Mount Packaging
– TQFN4x4-28 (with Enhanced Thermal Pad)
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
• Note Book PCs
• LCD Monitor
General Description
The APA2051 is a monolithic integrated circuit, which
combines a stereo power amplifier and a stereo output
capacitor-less headphone amplifier. The stereo power
amplifier provides 19-steps gain setting for flexible
application. The headphone amplifier is ground-refer-
ence output, and no need the output capacitors for DC
blocking. The advantages of eliminating the output ca-
pacitor are saving cost, PCB’s space, and component
height.
Both the de-pop circuitry and the thermal shutdown pro-
tection circuitry are integrated in the APA2051, which re-
duces pops and clicks noise during power on/off and in
shutdown mode. Thermal shutdown protects the chip
from being destroyed by over-temperature failure. To sim-
plify the audio system design in notebook computer
applications, the APA2051 provides the internal gain
setting, and these features can minimize components
and PCB area.
The APA2051 is available in TQFN4x4-28 package. This
package is characterized by space saving and thermal
efficiency.
Simplified Application Circuit
Audio Codec
Stereo
Speakers
Stereo
Headphone
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Aug., 2009
1
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
1 page  
APA2051
Electrical Characteristics (Cont.)
VDD = 5V, HVDD = 3.3V, GND = PGND = CPGND = 0V, TA= 25°C (unless otherwise noted).
Symbol
Parameter
Test Conditions
ATTENUATION
Att (HP_EN)
HP Disable Attenuation
Att (AMP_EN)
AMP Disable
Attenuation
Att_SD (HP_EN) Shutdown Active
Att_SD(AMP_EN) Shutdown Active
HEADPHONE TO SPEAKER CROSSTALK
Crosstalk
Channel Separation
SPEAKER TO HEADPHONE CROSSTALK
Crosstalk
Channel Separation
AMPLIFIER START-UP TIME
Tstart-up
Start-Up Time
RL = 32Ω, VO = 1.1Vrms, fin = 1kHz
RL = 10kΩ, VO = 1.1Vrms, fin = 1kHz
RL = 8Ω, VO = 2Vrms, fin = 1kHz
RL = 4Ω, VO = 2Vrms, fin = 1kHz
RL = 10kΩ on the Headphone Mode,
VO = 1.1Vrms, fin = 1kHz
RL = 8Ω on the AMP Mode, VO = 1Vrms,
fin = 1kHz
AMP_EN = 0V, RL = 8Ω
HP_EN = 5V, RL = 16Ω, fin = 1kHz,
PO = 125mW
HP_EN = 5V, RL = 10kΩ
AMP_EN = 0V, RL = 4Ω, fin = 1kHz,
PO = 1.5W
APA2051
Min. Typ. Max.
- 115 -
- 85 -
- 112 -
- 112 -
- 90 -
- 100 -
- 85 -
- 80 -
- 120 -
Unit
dB
dB
dB
dB
dB
dB
dB
dB
msec
Gain Setting Table _AMP Mode
Gain (dB)
-70
-7
-5
-3
-1
1
3
4
5
6
7
8
9
10
11
12
13
Input Voltage (VSET)
Low (V)
High (V)
0 2.00
2.04 2.12
2.15 2.24
2.28 2.35
2.39 2.47
2.51 2.58
2.62 2.70
2.74 2.81
2.86 2.92
2.97 3.04
3.09 3.15
3.21 3.27
3.33 3.39
3.45 3.51
3.56 3.62
3.68 3.73
3.80 3.85
Hysteresis (mV)
SD
47
36
41
41
35
41
48
43
47
45
54
59
64
53
59
66
(VDD=5V)
Recommended Voltage
(V)
0.00
2.08
2.20
2.31
2.43
2.54
2.66
2.78
2.89
3.01
3.12
3.24
3.36
3.48
3.59
3.70
3.82
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Aug., 2009
5
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
5 Page 
APA2051
Typical Operating Characteristics (Cont.)
Frequency Response
+0.2 +190
+0.1
Gain +185
Phase
-0
VDD=5V
-0.1
HVDD=3.3V
RL=16Ω
Rin=39kΩ
Cin=3.3µF
PO=28mW
HP mode
-0.2
10 100 1k 10k
Frequency (Hz)
+180
+175
+170
100k 200k
THD+N vs. Output Power
10
VDD=5V
HVDD=3.3V
RL=32Ω
Rin=39kΩ
Cin=3.3µF
1
fin=1kHz
BW<80kHz
HP mode
0.1
Stereo, in phase
Stereo, 180o
out of phase
Mono
0.01
0
50m
100m
150m
Output Power (W)
200m
Crosstalk vs. Frequency
+0
VDD=5V
-10 HVDD=3.3V
RL=32Ω
-20 Rin=39kΩ
Cin=3.3µF
-30 PO=88mW
HP mode
-40
-50
-60
-70 Right to Left
-80
-90 Left to Right
-100
20
100 1k
Frequency (Hz)
10k 20k
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Aug., 2009
11
THD+N vs. Output Power
10
VDD=5V
HVDD=3.3V
RL=32Ω
Rin=39kΩ
Cin=3.3µF
BW<80kHz
1 HP mode
0.1
0.01
1m
fin=20kHz
fin=20Hz
fin=1kHz
10m 100m 200m
Output Power (W)
THD+N vs. Frequency
10
VDD=5V
HVDD=3.3V
RL=32Ω
Rin=39kΩ
1 Cin=3.3µF
PO=88mW
HP mode
0.1 BW<80kHz
0.01
BW<22kHz
0.001
20
100 1k
Frequency (Hz)
10k 20k
Output Noise Voltage vs. Frequency
100µ
Right channel
Left channel
10µ
VDD =5V
HVDD=3.3V
RL=32Ω
Rin=39kΩ
Cin=3.3µF
A-weighting
1µ HP mode
20 100
1k
Frequency (Hz)
10k 20k
www.anpec.com.tw
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 32 Páginas | |
| PDF Descargar | [ Datasheet APA2051.PDF ] | |
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