Проектирования радиосвязных и радиовещательных приемных устройств индивидуального пользования, страница 14

Characteristic

Pin

Min

Typ

Max

Units

Drain Current (Carrier Detect Low)

8

–

4.5

8.0

mA

–3.0 dB Limiting Sensitivity (RF Amplifier Not Used)

Input For 12 dB SINAD

20 dB S/N Sensitivity (RF Amplifier Not Used)

–

0.7

2.0

mVrms

–

0.3

–

–1.0

1st Mixer Input Resistance (Parallel – Rp)

1, 28

–

690

–

W

1st Mixer Input Capacitance (Parallel – Cp)

1, 28

–

7.2

–

pF

1st Mixer Conversion Voltage Gain (Avc1, Open Circuit)

–

18

–

dB

2nd Mixer Conversion Voltage Gain )Avc2, Open Circuit)

–

21

–

2nd Mixer Input Sensitivity (20 dB S/N) (10.7 MHz i/p)

21

–

10

–

mVrms

Limiter Input Sensitivity (20 dB S/N) (455 kHz i/p)

9

–

100

–

RF Transistor DC Current Drain

4

1.0

1.5

2.5

mAdc

Noise Output Level (RF Signal = 0 mV)

16

–

70

–

mVrms

Recovered Audio (RF Signal Level = 1.0 mV)

16

120

200

–

mVrms

THD of Recovered Aduio (RF Signal = 1.0 mV)

16

–

2%

–

%

Detector Output Impedance

Series Equivalent Input Impedance

16

–

400

–

W

1

–

450–

j350

–

Data (Comparator) Output Voltage – High

18

–

–

^VCC

Vdc

Data (Comparator) Output Voltage – Low

0.1

0.1

–

Data (Comparator) Threshold Voltage Difference

17

70

110

150

mV

Meter Drive Slope

12

70

100

135

nA/dB

Carrier Detect Threshold (Below VCC)

12

0.53

0.64

0.77

Vdc

Mute Output Impedance – High

19

–

10

–

MW

Mute Output Impedance – Low

–

25

–