TA32305FN/FNG
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA32305FN/TA32305FNG*
RF 1chip Receiver and Transmitter for low power wireless
The TA32305FN is an RF 1 chip receiver and transmitter IC.
Receiver is for AM/FM radio.
The IC incorporates an RF amp, 2-level comparator, and local
×8 circuit.
This IC’s main use is remote control.
Features
•
•
•
•
•
•
RF frequency: 240 to 450 MHz (multiplication is used)
IF frequency: 80 kHz
Operating voltage range: 2.2 to 5.5 V
Current dissipation: TX 4.3 mA/ RX 5.6 mA (FM), 5.3 mA (AM)
(except current at oscillator circuit)
Current dissipation at BS: 0 µA (typ.)
Small package: 30-pin SSOP (0.65 mm pitch)
SSOP30-P-300-0.65
Weight: 0.17 g (typ)
Block Diagram
SAW
30
29
TX
RX
DATA DATA
28
RX
26
25
24
23
22
21
20
19
27
18
17
16
RF CHARGE RF RF
TX
LPF LPF
AF RSSI
MIX
REF GND1
OUT
OUT
IN
DEC IN
IN
OUT
RSSI
Comparator
×8
Detector
OSC
V
CC
1
IN
1
2
MIX
U/L OUT
4
3
IFF
IN
5
IFF
OUT
TX AM/
TX
IF
Vcc2 IF IN GND2 OUT QUAD Vcc3 Power FM
OUT
6
7
8
9
10
11
12
13
14
15
*: TA32305FNG Package is Pb-Free.
1
2003-12-04
TA32305FN/FNG
Pin Description
(the values of resistor and capacitor in the internal equivalent circuit are typical.)
Pin No.
Pin Name
Function
Internal Equivalent Circuit
50 kΩ
10 kΩ
10 kΩ
1
OSC IN
Local oscillator input pin.
1
2 pF
15 kΩ
2
V
CC
1
Local’ power supply pin.
3
U/L
U/L switch pin.
OPEN : Upper Local
L : Lower Local
Do not connect Vcc.
10 kΩ
3
100 kΩ
Mixer output pin.
4
MIX OUT
The output impedance of the pin is typically
225
Ω.
5
IFF IN
IF filter input pin.
5
6
200
Ω
4
15 kΩ
6
IFF OUT
IFfilter output pin.
7
V
CC
2
Power supply pin 2.
8
IF IN
IF amp input pin.
10k
Ω
10k
Ω
200
Ω
10
8
10
IF OUT
IF amp output pin.
9
GND2
GND pin 2.
2
2003-12-04
100
Ω
TA32305FN/FNG
Pin No.
Pin Name
Function
Internal Equivalent Circuit
32 kΩ
11
10k
Ω
―
15
13
10 kΩ
14
120 kΩ
19
10 kΩ
3 kΩ
16
17
250
Ω
18
100 k
Ω
5 k
Ω
11
QUAD
Phase-shift input terminal for the FSK
Demodulator.
12
Vcc3
Power supply pin 3.
13
TX Power
Regulating TX output power pin.
15
TX OUT
TXsignal output pin.
14
AM/FM
Changeover switch for AM/ FM.
OPEN : AM
L : FM
Do not connect Vcc.
16
RF IN
RF signal input pin.
17
RF DEC
Emitter pin for internal transistor.
19
RF OUT
RF amp output pin.
18
CHARGE
Control terminal for quick charge circuit.
To use the quick charge circuit, attach a
capacitor.
3
32 kΩ
2003-12-04
TA32305FN/FNG
Pin No.
Pin Name
Function
Internal Equivalent Circuit
2.4 kΩ
―
22
20
MIX IN
Mixer input pin.
20
21
GND1
GND pin 1.
25
22
REF
Threshold input terminal for 2-level FM/AM
comparator.
26
250
Ω
100 kΩ
5 kΩ
33 kΩ
100 kΩ
COMP
DATA
330
Ω
24
AF OUT
Output terminal for FM demodulator.
24
25
LPF IN
FM/AM LPF input pin.
5 kΩ
25
26
250
Ω
26
LPF OUT
FM/AM LPF output pin.
27
TX
Battery saving pin for transmitter.
27
41 kΩ
24 kΩ
23
RSSI
RSSI output pin.
This pin is connected internal circuit.
MONI pin during transmitting.
23
4
2003-12-04
TA32305FN/FNG
Pin No.
Pin Name
Function
Internal Equivalent Circuit
28
RX
Battery saving pin for receiver.
28
30 kΩ
29
TX DATA
AM modulation switch for transmitter.
L : Output ON
H : Output FF
28
97 kΩ
30
RX DATA
FM/AM waveform shaping output pin for
receiver.
Open collector output.
Connect a pull-up resistor.
30
2 kΩ
Equivalent circuits are given to help understand design of the external circuits to be connected. They do not
accurately represent the internal circuits.
5
2003-12-04
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