MC44BC374T1D FREESCALE [Freescale Semiconductor, Inc], MC44BC374T1D Datasheet - Page 8

• Manufacturer Part Number: MC44BC374T1D
• Description: PLL Tuned PAL/NTSC UHF and VHF Audio/Video High Integration Modulator IC
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Modulator High Frequency Characteristics
9 Modulator High Frequency Characteristics
Unless otherwise stated: V
RF inputs/outputs into 75Ohm load. SPECIFICATIONS ONLY VALID FOR ENVELOPE
DEMODULATION.
TVOUT output level
UHF oscillator frequency
VHF range
TVOUT output attenuation
Sound subcarrier harmonics (Fp+n∗Fs) Reference picture carrier. See Note 2
Second harmonic of chroma subcarrier
Chroma/Sound intermodulation:
Fp+ (Fsnd – Fchr)
Fo (picture carrier) harmonics
Out band (picture carrier) spurious
In band spurious (Fo ± 5MHz)
Note:
Note:
78
77
76
75
74
73
72
40
35
30
25
20
15
1: Picture carrier harmonics are highly dependant on PCB layout and decoupling capacitors.
2: See “Characterization Measurement Conditions” on page 11.
471 521 571 621 671 721 771 821 871
471
Maximum specification
521 571
Parameter
TV Output Le ve l
2Fo Har m onics
Fr e que ncy (M hz)
Fr e q ue n cy (M hz )
621 671
Minimum specification
Minimum specification
cc
Freescale Semiconductor, Inc.
=5.0V, Ambient Temperture=25
For More Information On This Product,
721 771
Figure 3. Typical Performance
MC44BC374T1 Technical Data
Output signal from modulator section
See Figure 3. See Note 2
From UHF oscillator internally divided
During transient output inhibit, or when
ATT bit is set to 1. See Figure 3.
See Note 2
Using red EBU bar. See Note 2
Using red EBU bar.See Note 2
2nd harmonic: CH21
3rd harmonic: CH21
Other channels: See Figure 3.
See NOTE 1. See Note 2
1/2∗Fo–1/4∗Fo–3/2∗Fo–3/4∗Fo
From 40MHz to 1GHz. See Note 2
No video sound modulation.See Note 2
Typical
Typical
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821 871
Test Conditions
7 5
7 0
6 5
6 0
5 5
5 0
4 5
45
40
35
30
25
20
15
o
471
4 7 1 5 2 1 57 1 6 21 6 7 1 7 2 1 7 7 1 8 21 8 7 1
C, Video Input 1V
521 571
T V O u t p u t A t t e n u a t io n
Typical
Minimum specification
Fr e q u e n c y ( M h z )
3Fo Har m o n ics
Fr e q ue n cy (M hz )
Min
460
621 671
73
45
50
—
—
—
—
—
—
—
Minimum specification
p-p
74.5
Typ
60
63
35
26
—
—
—
—
—
, 10-step grayscale.
0
721 771
Max
880
460
77
58
65
65
30
22
10
60
—
Typical
dBµV
dBµV
821 871
MHz
MHz
Unit
dBc
dBc
dBc
dBc
dBc
dBc
Type
C
C
C
C
C
C
B
A
B
B