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MC44BC374T1 Datasheet(PDF) 8 Page - Freescale Semiconductor, Inc

Part No. MC44BC374T1
Description  PLL Tuned PAL/NTSC UHF and VHF Audio/Video High Integration Modulator IC
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Maker  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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MC44BC374T1 Datasheet(HTML) 8 Page - Freescale Semiconductor, Inc

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MC44BC374T1 Technical Data
Modulator High Frequency Characteristics
9 Modulator High Frequency Characteristics
Unless otherwise stated: Vcc=5.0V, Ambient Temperture=25
o C, Video Input 1V
p-p, 10-step grayscale.
RF inputs/outputs into 75Ohm load. SPECIFICATIONS ONLY VALID FOR ENVELOPE
DEMODULATION.
Figure 3. Typical Performance
Parameter
Test Conditions
Min
Typ
Max
Unit
Type
TVOUT output level
Output signal from modulator section
See Figure 3. See Note 2
73
74.5
77
dB
µVB
UHF oscillator frequency
460
880
MHz
A
VHF range
From UHF oscillator internally divided
45
460
MHz
B
TVOUT output attenuation
During transient output inhibit, or when
ATT bit is set to 1. See Figure 3.
SeeNote2
50
60
dBc
B
Sound subcarrier harmonics (Fp
+n∗Fs) Reference picture carrier. See Note 2
63
58
dBc
C
Second harmonic of chroma subcarrier
Using red EBU bar. See Note 2
65
dBc
C
Chroma/Sound intermodulation:
Fp
+ (Fsnd – Fchr)
Using red EBU bar.See Note 2
65
dBc
C
Fo (picture carrier) harmonics
2nd harmonic: CH21
3rd harmonic: CH21
Other channels: See Figure 3.
See NOTE 1. See Note 2
35
26
30
22
dBc
C
Out band (picture carrier) spurious
1/2
∗Fo–1/4∗Fo–3/2∗Fo–3/4∗Fo
From 40MHz to 1GHz. See Note 2
—0
10
dB
µVC
In band spurious (Fo ± 5MHz)
No video sound modulation.See Note 2
60
dBc
C
Note:
1: Picture carrier harmonics are highly dependant on PCB layout and decoupling capacitors.
Note:
2: See “Characterization Measurement Conditions” on page 11.
TV Output Le ve l
72
73
74
75
76
77
78
471
521
571 621
671
721
771 821
871
Fr e que ncy (M hz)
T V Ou tp u t A t te n u a t io n
45
50
55
60
65
70
75
471 521 5 71 62 1 671 721 771 82 1 871
Fr e q u e n c y ( M h z )
3Fo Har m o n ics
15
20
25
30
35
40
45
471
521
571
621
671
721
771
821
871
Fr e q u e n cy (M h z )
2Fo Har m o n ics
15
20
25
30
35
40
471
521
571
621
671
721
771
821
871
Fr e q ue n cy (M hz )
Typical
Minimum specification
Minimum specification
Typical
Typical
Typical
Minimum specification
Maximum specification
Minimum specification
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com


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