TA1384FNG
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT
SILICON MONOLITHIC
TA1384FNG
Mixer/Oscillator and PLL IC for TV/VCR Tuner
The TA1384FNG is a tuner IC for TV and VCR applications that
integrates a PLL block and mixer, oscillator and IF amplifier on a
single chip.
The control data of the PLL block conforms to I²C-bus formats.
Small flat package: SSOP24 (0.65 mm pitch)
Features
Weight: 0.09 g (typ.)
Vcc: 5V（typ.）
Two-band mixer
Two-band oscillator
IF output driver
Asymmetrical IF output
I²C bus format control
33-V high voltage tuning amplifier built-in
Four-bit bandswitch drive transistor
Frequency steps: 31.25 kHz, 50 kHz, 62.5 kHz (when a 4 MHz crystal is used)
Four-programmable chip address
Power on reset circuit
Automatic changeover between 1/4 and 1/2 prescaler through data input
Package: Pb-free
Power on reset status
Frequency step: 62.5 kHz
Charge pump current: Low
Counter data: ALL [ 0 ]
Band driver: OFF
Tuning amplifier: OFF (Charge pump = sink mode)
Local oscillator and mixer: UHF mode
Note 1: This device is sensitive to surge voltage and electrostatic discharge. Handle with care.
1
2004/11/24
TA1384FNG
Block Diagram
GND3
24
X'tal
23
NF
22
Vt out
21
IF out
20
Vcc
19
GND2
18
UHF
OSC2
17
UHF
OSC1
16
VHF
VHF
VHF
OSC-C1 OSC-C2 OSC-B1
14
13
15
DIVIDER
1/2
1/4
1/32
1/33
PHASE
COMPARATOR
PROGRAMABLE
DIVIDER
B1
BAND
SW
U V
DATA INTERFACE
BAND DRIVER
ADR
B2
1
SCL
2
SDA
3
ADR
4
BS1
5
BS2
6
BS3
7
BS4
8
MIX
out1
9
MIX
out2
10
GND1
11
VHF
in
12
UHF
in
Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for explanatory purposes.
Terminal Name
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
SCL input
SDA in/output
ADR (address setting)
Band 1 output (VHF mode)
Band 2 output (VHF mode)
Band 3 output (UHF or FMT)
Band 4 output (UHF or FMT)
Mixer output 1
Mixer output 2
GND 1
VHF RF input
UHF RF input
VHF oscillator –B1
VHF oscillator –C2
VHF oscillator –C1
UHF oscillator 1
UHF oscillator 1
GND 2
Vcc
IF output
Vt output
NF
Crystal input
GND 3
Pin Name
2
2004/11/24
TA1384FNG
Terminal Function
The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purposes.
Pin No.
Pin Name.
Function
Interface
Vcc
1
SCL
Serial clock input pin
1
1kΩ
GND
Vcc
2
SDA
Serial data input and output pin
2
22Ω
1kΩ
70kΩ
GND
Vcc
150kΩ
100kΩ
1kΩ
Address setting pin
3
ADR
The address of the PLL block is set up
using the voltage applied to this pin.
3
100Ω
50kΩ
GND
Vcc
4
5
6
7
BS1 ~ BS4
The output port of the band block can
be set up using the control data.
Bear in mind that drive current differs
according to each band drive port..
50kΩ
4
5
6
7
DATA
I/F
GND
3
2004/11/24
TA1384FNG
Pin No.
Pin Name.
Function
Interface
Mixer output pins
8
Mixer Output
9
A tank circuit is connected between
the pins for tuning.
Since these are open collector
outputs, be sure to connect with a
power supply through a load
(resistance, coil).
8
9
GND
10
GND 1
Ground pin
－
11
RF signal input pin for the VHF band.
11
VHF RF Input
Asymmetrical input type
GND
12
RF signal input pin for the UHF band.
12
UHF RF Input
Asymmetrical input type
GND
14
15
13
14
15
Local oscillator for the VHF band
VHF Oscillator
The oscillator type is symmetrical
amplifier
13
GND
16
17
16
UHF Oscillator
17
Local oscillator for the UHF band
The oscillator type is symmetrical
amplifier.
GND
4
2004/11/24
TA1384FNG
Pin No.
18
19
Pin Name.
GND 2
Vcc
Ground pin
Function
Interface
－
－
Power supply pin
Vcc
IF signal output pin
20
IF Output
Asymmetrical output type.
Output impedance is about 75
Ω.
20
GND
Vcc
21
Vt Output
Be sure to connect a resistance (of
about 33 kΩ) between pin 21 and the
33-V external power supply for tuning.
To prevent abnormal oscillation,
connect between pin 21 and GND a
capacity element that does not affect
a PLL.
22
NF
50Ω
21
50Ω
50Ω
GND
22
Vcc
Crystal oscillator input pin
A 4-MHz crystal is used.
23
Crystal Input
23
GND
24
GND 3
Ground pin
－
5
2004/11/24
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