AN5278 Panasonic - SSG, AN5278 Datasheet - Page 6

• Manufacturer Part Number: AN5278
• Description: IC AUDIO AMP 4.8W SIL-9 W/FIN
• Manufacturer: Panasonic - SSG
• Type: Class ABr

Specifications of AN5278

• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 9W x 1 @ 8 Ohm
• Voltage - Supply: 12 V ~ 26 V
• Features: Mute, Tone and Volume Control
• Mounting Type: Through Hole
• Package / Case: 9-HSIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

AN5278
6
2.Application Note
1) Gain setting and frequency response
Technical Information (continued)
The gain is fixed to be 30 dB by internal resistors. The frequency response is flat for the values of R1 6.2 k , and
C2 0.01 F, between pins 1 and 2 (other conditions : tone control voltage is set at 2.5 V, and volume control voltage
is set at 5 V).
The gain can be reduced by inserting a resistor Rf in series with the electrolytic capacitor at Pin6.
Bass boost can be easily implemented by inserting a series connection of RC between Pin8 (output) and Pin6 (NF).
Example : Rb
V
IN
Voltage gain 20 log [10 k /(Rf 300 )]
10 F
12 k , Cb
6.2 k
R1
0.022 F
300
300
Rf
Rf
C2
0.01 F
10 F
Cb
10 k
10 k
Rb
Gain
R
R
ICs for Audio Common Use
L
L
30 dB
8
8
Frequency