U4065B Ver la hoja de datos (PDF) - Temic Semiconductors

Número de pieza

componentes Descripción

Fabricante

U4065B

FM Receiver

Temic Semiconductors 

U4065B

87.0

86.8

86.6

86.4

86.2

86.0

–30 –10 10 30 50 70 90

94 9423

Tamb ( °C )

AGC threshold (I10 = 1 mA) of the second IF amplifier

versus temperature

10000.00

1000.00

100.00

10.00

1.00

0.10

I10 (–30°C ) / mA

I10 (30°C ) / mA

I10 (90°C ) / mA

0.01

80

85

90

95 100 105

94 9424

viIF ( dBmA )

AGC characteristic of the second IF amplifier input

Interference Sensor (Mixer)

50

2viRF1

fiRF1

2viRF2

fiRF2

IL1

15

1

2 Rg15/16

=200

56

16

Interference

mixer

11

RL11 = 200

IL2

21

65

fLO

Local

oscillator

VS

94 9425

Test conditions for characteristic voIF versus viRF1:

fLO = 100 MHz, fRF1 = 89.3 MHz, viRF2 = 0, fIF = fLO – fRF1 = 10.7 MHz

Test conditions for 3rd order IM-characteristic voIF versus viRF1, viRF2:

fLO = 100 MHz. fRF1 =89.4 MHz, fRF2 = 89.5 MHz, fIF = fLO – (2 fRF1 –1 fRF2) = 10.7 MHz

IL1, IL2 = insertion loss of the RF transformer

voIF

fIF

50

IL1=IL2=0.7dB

16 (23)

Rev. A3, 15-Oct-98

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