TA2012F TOSHIBA [Toshiba Semiconductor], TA2012F Datasheet - Page 8

• Manufacturer Part Number: TA2012F
• Description: 3V AM / FM IF + MPX (For Digital Tuning System)
• Manufacturer: TOSHIBA [Toshiba Semiconductor]

4. AM low-cut circuit
· The gain loss of FM IF AMP
· The gain loss of AM MIXER
· The AM low-cut action is carried out by the bypass of the high frequency component of
· The cut-off frequency f
· In the case of the AM low-cut function is not needed, set up the value of C
the positive-feedback signal at the AF AMP stage. The external capacitor: C
by-passes this component.
external capacitor C
In the condition of C
L f
=
2
(1.3375MHz)
(Note)
-16dB
(10.7MHz)
´
0Ω
1 / 8 IF
p
・In the condition of the 1 / 8 IF mode, it is
・In the condition of IF mode, it is necessary to set up the value of R
´
IF
possible to set up R
10kΩ it is feared that the mode is change to the 1 / 8 IF mode.
22
1
´
R 2
10
3
´
6
C
6
6
as following;
10KΩ
≥ 0.47µF, the frequency characteristic has flat response at the low frequency.
-1dB
L
(Hz)
-20dB
-20dB
is determine by the internal resistance 22kΩ (typ.) and the
0Ω
2
= ∞ (OPEN).
R 2
10KΩ (Note)
-1dB
-1dB
8
TA8132AN / AF , TA2012N / F
6
2
over 0.47µF.
6
under 10kΩ. When the R
2002-10-30
2
is over