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ELECTRICAL CHARACTERISTICS
VIDEO DETECTOR (CONTINUED)
Residual 920 kHz Beat Output, dB Below 100% Modulated Video
(Pin 5 or 6, Note 2)
FM SOUND IF AND DETECTOR
Input Impedance Components
Parallel Resistance
Parallel Capacitance
Input Limiting Threshold (f = 4.5 MHz)
AM Rejection (V in = 10 mV, Notes 4, 5, 6)
f = 4.5 MHz
f = 5.5 MHz
Recovered Audio Output (Pin 24, V in = 10 mV, Note 4)
f = 4.5 MHz
f = 5.5 MHz
Output Distortion (Pin 24, V in = 10 mV, Note 4)
f = 4.5 MHz
f = 5.5 MHz
Sound AFT (Note 7)
Pull–in Range
Hold–in Range
Sound De–Emphasis Internal Resistance (Pin 4)
AM Detector Crosstalk
AM DETECTOR
Input Impedance Components
Parallel Resistance
Parallel Capacitance
Recovered Audio Output (Pin 24, V in = 100 mV, Note 5)
Output Distortion (Pin 24, V in = 10 mV, Note 5)
FM Sound IF and Detector Crosstalk
DC VOLUME CONTROL
Volume Control Range (Pin 1, Pin 3 = V in )
Output Signal at Minimum Volume Setting (Pin 1 = Gnd, Pin 3 = V in )
Video Detector Sync to Audio Channel Crosstalk
Fixed Output
Variable Output
Audio Channel Crosstalk
Fixed Output to Variable Output
Variable Output to Fixed Output
V in = 1.0 mVrms signal at 45.75 MHz with 75% modulated staircase at 3.58 MHz.
NOTES: 1.
2. V in = 100 µVrms signal at 41.25 MHz added to signal in Note 1.
3. Differential carrier level at video IF inputs to cause the negative detector output to go positive by 0.1 V from ground.
4. FM Modulation = 25 kHz deviation at 1.0 kHz for 4.5 MHz intercarrier.
5. AM Modulation = 30% depth at 1.0 kHz for 4.5 MHz and 5.5 MHz intercarrier.
6. AM Rejection (dB) = 20 log
7. Tested with 15 µH sound quadrature coil in parallel with 68 pF and 10 kΩ.
8. The AFT output can be disabled by leaving Pin 12 disconnected or by biasing it to the voltage level shown above. When disabled, the output will be
internally clamped to one half of V CC .
MOTOROLA ANALOG IC DEVICE DATA
Downloaded from
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(continued) (V CC = 5.0 V, T A = 25 C.)
Characteristic
50 kHz deviation at 1.0 kHz for 5.5 MHz intercarrier.
V
O(FM)
V
O(AM)
MC44302A
Symbol
B O
R in(FM)
C in(FM)
V in(Snd)
AMR
V O(Snd)
THD
∆f AFT(Snd)
R DE
Ctlk AM
R in(AM)
C in(AM)
V O(Snd)
THD
Ctlk FM
∆V O(Snd)
V O(Snd)
Ctlk VD
Ctlk Snd
Min
Typ
Max
–
–60
–
–
2.2
–
–
4.0
–
–
80
–
–
50
–
–
50
–
–
2.0
–
–
2.0
–
–
1.0
–
–
1.0
–
–
0.6
–
–
0.6
–
–
18
–
–
– 6.0
–
–
5.6
–
–
4.0
–
–
2.0
–
–
1.0
–
–
–60
–
–
+12 to –70
–
–
1.0
–
–
–60
–
–
–60
–
–
–60
–
–
–60
–
Unit
dB
kΩ
pF
µV
dB
Vpp
%
MHz
kΩ
dB
kΩ
pF
Vpp
%
dB
dB
mV
dB
dB
3
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