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TA2022AFN

Toshiba
Part Number TA2022AFN
Manufacturer Toshiba
Description 1.5V AM/FM IF+MPX
Published Jul 13, 2005
Detailed Description TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA2022AFN TA2022AFN 1.5V AM / FM IF + MPX TA2022AFN is t...
Datasheet PDF File TA2022AFN PDF File

TA2022AFN
TA2022AFN


Overview
TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA2022AFN TA2022AFN 1.
5V AM / FM IF + MPX TA2022AFN is the AM / FM IF + MPX system IC, which is developed for headphone radio in 1.
5V use.
This is included many functions and this can be used for digital tuning system with IF counter.
Features · Suitable for combination with digital tuning system which is included IF counter.
· Built−in AM / FM IF count output for IF counter of digital tuning system.
FM: 10.
7MHz AM: 450kHz · Adjustable for stop pulse sensitivity (in FM mode) · For adopting ceramic discriminator, it is not necessary to adjust the FM QUAD detector circuit.
· Built−in AM IF output for AM stereo · MPX input for main signal is independent of that for pilot signal.
(MPX input for pilot signal is shared with AM input) · MPX output is high−impedance in power off mode.
· Built−in power switch · Low supply current (VCC = 1.
2V, Ta = 25°C) FM mode: ICC2 = 5.
5mA (typ.
) AM mode: ICC3 = 3.
7mA (typ.
) · Operating supply voltage range (Ta = 25°C) VCC (opr) = 0.
95~2.
2V · Stereo operating supply voltage range (Ta = 25°C) VCC (opr) = 1.
0~2.
2V Weight: 0.
14 g (typ.
) 1 2002-10-30 TA2022AFN 2 2002-10-30 TA2022AFN Terminal Explanation Terminal Voltage: Typical Terminal Voltage at no Signal with The Test Circuit 1 (VCC = 1.
2V, Ta = 25°C) Terminal No.
Name Function Internal Circuit Terminal Voltage (V) AM FM Referential voltage 1 VREF Bypass terminal for AM RF and FM IF amplifier 0.
9 0.
9 2 OSC AM OSC 4 MIX Output of AM MIX 1.
2 1.
2 1.
2 1.
2 Imput of FM IF signal 3 FM IF in ・Input impedance 330Ω (typ.
) 5 VCC ― Imput of AM IF signal 6 AM IF IN ・Input impedance 3kΩ (typ.
) 0.
9 0.
9 ― 1.
2 1.
2 1.
2 1.
2 7 QUAD FM QUAD detector 1.
2 1.
2 3 2002-10-30 Terminal No.
Name Function ・AM mode AGC time constant is determined by external capacitor.
8 AGC ・FM mode The sudden change of stop pulse sensitivity is held in by external capacitor.
9 GND ― Output of IF count signal In case of IF request mode, IF 10 ...


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