MC44CC374T1AEF Freescale Semiconductor, MC44CC374T1AEF Datasheet - Page 18

• Manufacturer Part Number: MC44CC374T1AEF
• Description: Modulator / Demodulator CMOS MOD R3.0 374T1A
• Manufacturer: Freescale Semiconductor

Specifications of MC44CC374T1AEF

• Package / Case: SOIC-16
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 22. Performance Measurement Test Set-ups
MC44CC373
18
Video: 10 steps grey scale
No audio
ATT bit = 1
No Video signal
No Audio signal
Video: 10 steps grey scale
No Audio signal
No audio
Video: a 700m V
signal is inserted on the black level of active
video area.
The default configuration unless otherwise specified:
•
•
•
•
•
•
•
Frequency
4.43 MHz
Peak White Clip enabled
UHF oscillator ON
Sound and video modulators ON
Sound subcarrier frequency = 5.5 MHz
Sound Oscillator ON
Sound PLL reference frequency = 31.25 kHz
Logic Output Port LOW
Device and Signals Set-up
(PP)
4.43 MHz sinusoidal
CHARACTERIZATION MEASUREMENT CONDITIONS
700 mV
pp
Second Harmonics of Chroma Subcarrier
Sound Subcarrier Harmonics
Measured picture carrier in dBμV with a Spectrum Analyzer using a 75 to 50 Ω
transformation, all cables losses and transformation pads having been
calibrated.
Measurement used as a reference for other tests: RFout_Ref
Measure in dBc picture carrier at ATT=1 with reference to picture carrier at
ATT=0
Measure in dBc second and third sound harmonics levels in reference to
picture carrier (RFout_Ref).
Measure in dBc, in reference to picture carrier (RFout_Ref), second harmonic
of chroma at channel frequency plus 2 times chroma frequency, resulting in the
following spectrum.
RF
OUT
RF
OUT
Output Attenuation
Output Level
Picture carrier
Picture carrier
Fo
•
•
•
•
•
•
•
•
Fo
Picture-to-sound carrier ratio = 12 dB
System L disabled
Test pattern disabled
All test mode bits are ‘0’
Frequency from channel 21 to 69
RF Inputs / Output into 75Ω Load using a 75 to 50 Ω
transformation.
Video Input 1Vpp.
Audio pre-emphasis circuit enabled.
Chroma
carrier
Measurement Set-up
Sound carrier
+4.43MHz +5.5MHz
+5.5MHz
Sound
2nd harm
+11MHz +16.5MHz
Sound
carrier
Chroma 2nd
Harmonic
+8.86MHz
Sound
3rd harm
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