ta1372fng TOSHIBA Semiconductor CORPORATION, ta1372fng Datasheet - Page 3

• Manufacturer Part Number: ta1372fng
• Description: Vhf Band Rf Modulator Ic For Vcrs And Set Top Boxes
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Pin Description
The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purpose.
No.
Pin
1
2
3
4
5
Reference
signal Mode
selection
Video signal
Input
RF PLL loop
filter
Analog GND
Sound signal
input
Name
(V
CC
DC Voltage
H: 5 V
M: 2.5V
L: 0 V
2.4 V
(sync tip)
H: 5 V
M: 2.5V
L: 0 V
(normal
mode)
(typ.)
(0 V)

5.0 V, Ta
modulation)
modulation)
AC Voltage
500 mV
167 mV
(100% FM
(typ.)
(80%



p-p
p-p
25° C)
1
2
3
5
3
10 k:
Interface equivalent circuit
10 k:
2 k:
2 k:



D.V
D.GND
A.V
A.GND
D.V
D.GND
A.V
A.GND
CC
CC
CC
CC
Reference signal Mode can
be selected this pin.
High or Open: 4MHz
Middle: 3.579545MHz
Low: Internal Oscillation
Sync tip clamp input. It is
used by AC coupling.
Video modulation depth is
set by level of input signal
on this pin.
White clip level for IC is set
internally for DC, but it will
change by the high
frequency-factor.
RF oscillation frequency is
compared with RF setting
frequency(pin 8), and the
error is outputted by Charge
pump.
LPF for high frequency
rejection is connected to
this terminal. And the
voltage for RF VCO control
is generated.
The reference frequency is
62.5 kHz.
Analog GND
Sound modulation depth is
set by level of sound signal
input on this pin.
Sound pre-emphasis is
applied before this pin.
This pin is also used for
switching test mode.
Normally this pin is used at
0 V DC (used by AC
coupling).
H: Test mode
M: Test mode (White Clip
L (open): Normal mode
external input mode
external input mode
Mode with 4MHz X’tal
TA1372FNG
through mode)
2003-12-25
Note