ta1326fng TOSHIBA Semiconductor CORPORATION, ta1326fng Datasheet - Page 3

• Manufacturer Part Number: ta1326fng
• Description: Uhf Band Rf Modulator Ic For Vtrs
• 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
6
Video signal
input
Sound
signal input
Analog V CC (5 V)
4-MHz X’tal
Digital GND
SCL
Name
2.4 V
(sync tip)
0 V
(Normal
Mode)
2.7 V
(Internal
Oscillation
Mode)
4.3 V
(External
Input Mode)
(0 V)
L: ≤ 1.5 V
H: ≥ 2.0 V
(V
DC Voltage
CC
(typ.)
= 5.0 V, Ta = 25°C)
modulation)
modulation)
AC Voltage
500 mVp-p
350 mVp-p
(100% FM
(typ.)
(80%
⎯
⎯
⎯
⎯
Note 1: Internal Oscillation Mode OFF
Note 2: External Input Mode OFF
D.GND
1
2
6
D.V
3.6 V
CC
37.5 kΩ
10 kΩ
3
1 kΩ
(Note 1)
Interface
(Note 2)
500 Ω
⎯
⎯
2 kΩ
2 kΩ
0.1 mA
A.V
A.GND
A.V
A.GND
D.V
D.GND
CC
CC
CC
4
Sync tip clamp input. It
is used by AC coupling.
Video modulation depth
is set by level of signal
input on this pin.
White clip level for IC is
set internally for DC, but
it will change by the high
frequency-factor.
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
L (open): Normal Mode
Analog power supply
As reference signal,
either 4-MHz crystal
resonator can be
connected to this pin for
internal oscillation or
external signal can be
input.
External Input Mode can
be selected using I
bus or by pulling up this
pin using external
resistor in Internal
Oscillation Mode.
3.8 V or higher
3.4 V or lower
(in Internal Oscillation
Mode)
Digital ground
Pin connected to I
serial clock line.
Data transfer rate
conforms to Fast Mode
standard.
: external input
: internal oscillation
TA1326FNG
Note
2
2
C bus
C