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PDF LA4814JA Data sheet ( Hoja de datos )
| Número de pieza | LA4814JA | |
| Descripción | 2-Channel Power Amplifier | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Ordering number : ENA2040
LA4814JA
Monolithic Linear IC
2-Channel Power Amplifier
http://onsemi.com
Overview
The LA4814JA buili-in the power amplifier circuit capable of low-voltage (2.7V and up) operation and has
additionally a standby function to reduce the current drain. It is a power amplifier IC optimal for speaker drive used in
battery-driven portable equipment and other such products.
Applications
Mini radio cassette players/recorders, portable radios, transceivers and other portable audio devices
Features
• On-chip 2-channel power amplifier
Output power 1 = 350mW typ. (VCC = 5.0V, RL = 4Ω, THD = 10%)
Output power 2 = 150mW typ. (VCC = 3.6V, RL = 4Ω, THD = 10%)
• Enables monaural BTL output system by changing externally connected components
Output power 3 = 700mW typ. (VCC = 5.0V, RL = 8Ω, THD = 10%)
Output power 4 = 320mW typ. (VCC = 3.6V, RL = 8Ω, THD = 10%)
• Low-voltage operation possible
VCC =2.7V and up
• Standby function
Current drain at standby = 0.1μA typ. (VCC = 5V)
• Voltage gain setting possible
Voltage gain = 3 to 20dB
• Second amplifier stop control function
Reducing the pop noise at startup (in BTL mode)
Semiconductor Components Industries, LLC, 2013
May, 2013
32812 SY 20111215-S00001 No.A2040-1/16
1 page  
Block Diagram
LA4814JA
20 19 18 17 16 15 14 13 12 11
CNT
STBY
BIAS
- VCC
Power AMP-2 +
Power AMP-1 +
-
1 2 3 4 5 6 7 8 9 10
Test Circuit
Power supply
VCC = 5V
+
out2
+
S4
S2
S1
Power supply
20 19 18 17 16 15 14 13 12 11 Vsby = 1.5V
1 2 3 4 5 6 7 8 9 10
+
out1
+
S3
Signal source
fin = 1kHz
No.A2040-5/16
5 Page 
LA4814JA
CH.Separation - f
-40 20
18
-50
16
-60 14
12
-70 10
-80 CH1 2
CH2 1
-90
-100
10
100
2 3 5 7100 2 3 5 7 1k 2 3 5 710k 2 3 5 7100k
Frequency, f - Hz
SVRR - f
8
6
4
2
0
2
70
90
60
80
70 50
60
40
50
30
40
30
20
10
0
10 2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k 2 3 5 7100k
Frequency, f - Hz
Mutting attenation - VIN
-70
20
10
0
1
-70
VNO - VCC
3456
Supply voltage, VCC - V
SVRR - C5
7
23
5 7 10
23
5 7 100
Mutting attenation - f
-80 -80
-90 -90
-100
-110
-40
-30 -20 -10
0
Input voltage, VIN - dBV
General characteristics BTL mode
THD - PO
100
7
5
3
2
10
20
10
7
5
3
2
1.0
7
5
3
2
0.1
0.01
23
5 7 0.1 2 3 5 7 1
23
Output power, PO - W
5 7 10
-100
-110
10
2 3 5 7 100 2 3 5 7 1k 2 3 5 7 10k 2 3 5 7100k
Frequency, f - Hz
100
7
VCC = 5V
5 f = 1kHz
Vg = 16.4dB
3
2
THD - PO
10
7
5
3
2
1.0
7
5
3
2
0.1
0.01
23
5 7 0.1 2 3 5 7 1
2 3 5 7 10
Output power, PO - W
No.A2040-11/16
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet LA4814JA.PDF ] | |
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