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LA4525 Datasheet(PDF) 7 Page - Sanyo Semicon Device

Part # LA4525
Description  For Radio Cassette Recorders Dual AF Power Amplifier
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LA4525 Datasheet(HTML) 7 Page - Sanyo Semicon Device

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LA4525
No. 4022-7/8
2
-10
2
0
-2
-4
-6
-8
JK452519
23
5 7100
23
5 7 1k
23
5 7 10k
2 3
5 7100k
+
+
f Response
Frequency, f -- Hz
Co1
Co2
8
BTL
VCC = 6V
RL = 8Ω
VO = 0dBm
Rg = 600
VG = 46dB/1kHz
3
JK452520
0.01
23
5
7 0.1
23
5
7 1.0
2
0
600
0
1.2
500
1.0
400
0.8
300
0.6
200
0.4
100
0.2
ICC, Pd -- PO
Output power, PO -- W
I CC
Pd
BTL
Pd = VCC×ICC−PO
VCC = 6V
Rg = 600
f = 1kHz
= 1000
µF
Handling Instructions and Precautions
Internal Circuits
Figure 1. Input pins (6 and 7) and BTL input pin (5)
Figure 2. Output pins (1 and 3)
External Components
• The starting time, ts, can be varied by changing the value of the input capacitor. A value of 2.2µF is recommended. A
smaller value will result in a lower starting time, and a larger value, a higher starting time.
• The output capacitor should have a value of 470µF. A lower value will cause the low-frequency roll-off and low-power
characteristics to deteriorate.
• A value of 470µF is recommended for the power supply capacitor, although this can change according to the design
setup conditions.
• In dual mode, BTL IN (the channel 2 negative feedback connection) should be left floating.
BTL mode
• The output capacitors should have a value of 470µF. If these are omitted, a ‘‘popping’’ noise occurs. Also, any output
offset will cause a current to flow which could damage the load under quiescent DC conditions.
• The output capacitors can be replaced with a single 220µF bipolar capacitor. A larger value can cause switching noise
when power is applied to the device.


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