參數(shù)資料
型號(hào): MC44BS373CAFCR2
廠商: Freescale Semiconductor
文件頁(yè)數(shù): 9/52頁(yè)
文件大?。?/td> 0K
描述: IC MODULATOR AUD/VID U/V 20-QFN
標(biāo)準(zhǔn)包裝: 2,500
類(lèi)型: NTSC/PAL 調(diào)制器
應(yīng)用: 音頻/視頻,VCR,機(jī)頂盒
安裝類(lèi)型: 表面貼裝
封裝/外殼: 20-VQFN 裸露焊盤(pán)
供應(yīng)商設(shè)備封裝: 20-QFN 裸露焊盤(pán)(5x5)
包裝: 帶卷 (TR)
MC44BS373CA Data Sheet
Characterization Measurement Conditions
Figure 5. Typical Audio Performance
14 Characterization Measurement Conditions
Table 23 shows the MC44BS373CA default configuration unless otherwise specified.
RF inputs/output into 75-
load using a 75- to 50- transformation. Video input 1 Vp-p. Audio
pre-emphasis circuit enabled.
Table 23. Device Default Configuration
Device Feature
Default Setting
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
Picture-to-sound carrier ratio
12 dB
System L
Disabled
Test pattern
Disabled
All test mode bits
Zero
Frequency
From channel 21 to 69
Table 24. Measurement Conditions
Device and Signal Set-Up
Measurement Set-Up
TVOUT Output Level
Video: 10-step grey scale
No audio
Measured picture carrier in dB
V with the HP8596E spectrum analyzer
using a 75- to 50-
transformation, all cable losses and transformation
pads having been calibrated.
Measurement used as a reference for other tests: TVout_Ref
FM Audio Weighted Signal to Noise
46
48
50
52
54
56
58
471
521
571
621
671
721
771
821
871
Frequency (Mhz)
dB
Typical
Minimum specification
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