MC44BC375JDR2 Просмотр технического описания (PDF) - Freescale Semiconductor
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MC44BC375JDR2 Datasheet PDF : 20 Pages
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Freescale Semiconductor, Inc. Video Characteristics
9 Video Characteristics
Parameter
Test Conditions
Min Typ Max Unit Type
Video bandwidth
Reference 0dB at 100kHz, measured at
5 MHz
-1.5 -0.5
—
dB
C
Video input level
75Ohm load
—
—
1.5 Vcvbs D
Video input current
—
0.2
1
µA
A
Video input impedance
500
—
— KΩ A
Video S/N
Unweighted
Weighted
49
52
—
dB
C
56
60
—
dB
C
Differential Phase
+/-1 +/-5 deg C
Differential Gain
1
5
%
C
Luma/Sync ratio
Input ratio 7.0:3.0
6.8/3.2 — 7.2/2.8 —
B
Video modulation depth Video input level=1.0 Vcbvs
80
85
90
%
B
Peak White Clip
Video Modulation Depth for Video=1.4 Vcbvs 90.5
95
99.5
%
B
10 Audio Characteristics
All audio measurement use specified pre-emphasis circuit.
Parameter
Test Conditions
Min Typ Max Unit Type
Picture to Sound ratio
Picture to Sound ratio
difference
PSS (Pin2) = HI
PSS (Pin2) =LO
between PSS = HI and PSS = LO
14
12
16
14
18 dB
16 dB
B
1.5 2.0 2.5 dB B
Using specific pre-emphasis circuit - Audio Input: 1Khz @ 205 mVrms
Audio FM Modulation Depth
Fs = 4.5 MHz
(100% Modulation = +/- 25 kHz FM Deviation)
75 85 95 % B
Audio input resistance
Fs = 5.5 MHz
(100% Modulation = +/- 50 kHz FM Deviation)
75 85 95 % B
45 55 61 kΩ A
Audio Frequency response
0dB ref @1kHz
Measure from 50Hz to 15kHz
Audio Distortion FM (THD
only)
At 1 kHz and 100% mod (+/- 50 kHz) - No Video
Audio S/N with Sync Buzz FM
-2.5 - +2 dB C
- 0.3 1 % C
50 53 - dB C
11 Characterization Measurement Conditions
Device default configuration unless otherwise specified:
• Sound subcarrier frequency = 5.5Mhz
• Picture-to-sound carrier ratio = 12dB
• CH3 & CH4 frequencies
RF Inputs / Output into 75ohm Load using a 75 to 50 ohm transformation.Video Input 1V pk-pk.Audio
pre-emphasis circuit engaged.
MOTOROLA
MC44BC375/U/J/T Technical Data
7
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