Datasheet

ManualsBrandsUnbranded ManualsLinear ICsLinear IC TA7642 TO 92

ONE CHIP AM RADIO CIRCUIT

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DESCRIPTION

TheTA7642issuitableforlowvoltageportable

Radio, cassette system and other wireless AM

system. The package of UTC7642 is TO-92.

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FEATURES

*Low operating voltage: Down to V

=1.3V

*Low Quiescent Current:I

CCO

=0.2mA

*Low external component required.

TO-92

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EQUIVALENT CIRCUIT

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5.6KΩ

12pF

3.3KΩ

12KΩ

12pF

12KΩ

T5 T6

T8 T9

T10

12KΩ

R11

12KΩ

R10

12KΩ

23pF

R13

12KΩ

R12

12KΩ

R14

74.6Ω

R15

12KΩ

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ABSOLUTE MAXIMUM RATINGS

Tested at Ta=25°C,unless otherwise specified

Parameters Symbols Min. Max. Unit

Supply Voltage V

Operating Temperature Topr -10 60

°C

Storage temperature T

STG

-55 150

°C

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TA7642 LINEAR INTEGRATED CIRCUIT

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Summary of content (2 pages)

PAGE 1
TA7642 LINEAR INTEGRATED CIRCUIT ONE CHIP AM RADIO CIRCUIT DESCRIPTION The TA7642 is suitable for low voltage portable Radio, cassette system and other wireless AM system. The package of UTC7642 is TO-92. FEATURES *Low operating voltage: Down to VCC=1.3V 1 *Low Quiescent Current:ICCO=0.2mA *Low external component required. TO-92 EQUIVALENT CIRCUIT 3 R3 12KΩ 2 T1 C1 12pF R5 12KΩ R4 12KΩ R6 12KΩ R11 12KΩ R13 12KΩ R15 12KΩ C4 23pF C2 12pF R7 12KΩ T4 R2 3.3KΩ R10 12KΩ R14 74.
PAGE 2
TA7642 LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Tested at Ta=25°C,VCC=1.3V,fm=1kHz,fO=1MHz,MOD=30%,unless other specified) Parameters Symbols Supply Voltage VCC Quiescent Current ICCQ Test conditions VI=0 Input Resistance RI Maximum sensitivity SM VOD=3mV Detector Output Voltage VOD VI=10mV The Range of AGC ∆A Min. Typ. Max. 1.2 1.3 1.6 Unit V 0.14 0.20 0.30 mA ü 3 ü MΩ ü 600 ü µV 5 15 30 mV ü 30 ü dB TEST CIRCUIT RAGC 1.5kΩ 100kΩ Vcc 0.