Detector IC. TA31275FN Datasheet

TA31275FN IC. Datasheet pdf. Equivalent


Part TA31275FN
Description AM/FM RF/IF Detector IC
Feature ( DataSheet : www.DataSheet4U.com ) TA31275FN/ TA31275FNG TOSHIBA Bipolar Linear Integrated Circuit.
Manufacture Toshiba Semiconductor
Datasheet
Download TA31275FN Datasheet


( DataSheet : www.DataSheet4U.com ) TA31275FN/ TA31275FNG T TA31275FN Datasheet
( DataSheet : www.DataSheet4U.com ) TA31275FN/ TA31275FNG T TA31275FNG Datasheet
Recommendation Recommendation Datasheet TA31275FN Datasheet




TA31275FN
( DataSheet : www.DataSheet4U.com )
TA31275FN/ TA31275FNG
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic
TA31275FN, TA31275FNG
AM/FM RF/IF Detector IC for Low Power Wireless System
The TA31275FN is an RF/IF detector IC for AM/FM radio.
The IC incorporates an RF amp, 2-level comparator, and local ×8
circuit
Features
RF frequency: 240 to 450 MHz (multiplication is used)
100 to 450 MHz (multiplication is not used)
IF frequency: 10.7 MHz
Operating voltage range: 2.4 to 5.5 V
Current dissipation: 5.8 mA (FM)/5.4 mA (AM)
(except current at oscillator circuit)
Current dissipation at BS: 0 µA (typ.)
Small package: 24-pin SSOP (0.65 mm pitch)
Block Diagram
Weight: 0.09 g (typ.)
SAW
24 23
LPF LPF
OUT IN
22 21 20 19 18
AF RSSI REF AM/FM MIX
OUT
RSSI
AM/FM
Comparator
IN
17 16 15 14 13
GND1 RF- CHARGE RF- RF-
OUT
DEC IN
×8 Detector
OSC-
IN
1
VCC-
MIX
IF-
Lo LoBS OUT VCC1 IF-IN DEC GND2
2345678
BS QUAD VCC2 DATA
9 10 11 12
BPF
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03-01-23



TA31275FN
TA31275FN/ TA31275FNG
Pin Description
(the values of resistor and capacitor in the internal equivalent circuit are typical.)
Pin No. Pin Name
Function
Internal Equivalent Circuit
1 OSC IN
Local oscillator input pin.
2 VCC-Lo
Local’ power supply pin
3 LOBS
Lo switch pin.
H: ×8 circuit pin.
L: Through pass
1
2 pF
70 k
3
Mixer output pin.
4 MIX OUT The output impedance of the pin is typically
330 .
5 VCC1
Power supply pin 1.
6 IF IN
IF amp input pin.
7 IF DEC
IF amp input pin.
Used as a bias coupling pin.
8 GND2
GND pin 2.
9 BS
Battery saving pin.
245
4
3 k
6
7
40 k
9
2 03-01-23







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