Toshiba TC9349AFG Manual page 116

2. Electronic Volume Configuration and Circuit Example
The electronic volume is configured by connecting the tuner and headphone amplifier as shown below.
チューナ
Tuner
～
R channel output
Rチャネル出力
Lチャネル出力
L channel output
～
～
R channel input
Rチャネル入力
L channel input
Lチャネル入力
リファレンス出力 Reference output
～
Headphone amplifier
ヘッドホンアンプ
The electronic volume reference voltage (VRcom) is usually connected to the reference output pin of the headphone
amplifier. When the reference output pin is not available, connect this potential to the GND level or the V
constant voltage). If the reference voltage (VRcom) is connected to GND, the distortion factor becomes 0.1% or below
when the input level (VRin) is 0.2 Vp-p or below. Caution must be taken as the distortion will be worse when this input
level is exceeded.
Note: The circuit shown above is for reference only. Examine and design actual circuits according to your
desired characteristics.
1uF
1uF
1uF
1uF
Example of electronic volume connection circuit
電子ボリューム接続回路例
116
～
VRout1
44
VRin1
45
VRcom
46
47
VRin2
VRout2
48
～
TC9349AFG
pin (1.5 V
EE
2006-02-24