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TA31275FN Datasheet(PDF) 2 Page - Toshiba Semiconductor

Part No. TA31275FN
Description  AM/FM RF/IF Detector IC for Low Power Wireless System
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Maker  TOSHIBA [Toshiba Semiconductor]
Homepage  http://www.semicon.toshiba.co.jp/eng
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TA31275FN/ TA31275FNG
03-01-23
2
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
4
MIX OUT
Mixer output pin.
The output impedance of the pin is typically
330
Ω.
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.
2 pF
1
70 k
3
245
4
6
7
3 k
40 k
9




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