MC44BS374CAEF Freescale Semiconductor, MC44BS374CAEF Datasheet - Page 13

• Manufacturer Part Number: MC44BS374CAEF
• Description: IC AUDIO/VIDEO MODULATOR 16-SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MC44BS374CAEF

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

13 Audio Characteristics
Unless otherwise stated: V
RF inputs / outputs into 75 Ohm load.
Picture-to-Sound ratio
Audio modulation depth
Audio input resistance
Audio Frequency
response
Audio Distortion FM (THD
only)
Audio S / N with Sync Buzz
FM
Note: 2: See “Characterization Measurement Conditions” on page 14.
Parameter
Specifications only valid for envelope demodulation.
cc
Freescale Semiconductor, Inc.
=5.0 V, Ambient Temperture=25
Table 5. Audio Performance Characteristics
PS bit set to 0
PS bit set to 1
Using specific pre-emphasis circuit,
audio input level = 205 mVrms - audio frequency = 1 kHz
FM modulation : Fs = 5.5, 6 or 6.5 MHz
100% modulation = +/-50 kHz FM
deviation
FM modulation : NTSC Fs = 4.5 MHz
100% modulation = +/-25 kHz FM
deviation
Reference 0 dB at 1 kHz,
using specified pre-emphasis circuit,
measure from 50 Hz to 15 kHz
Depends on loop filter components
at 1 kHz, 100% modulation ( ± 50 kHz )
No video
Ref 1Khz, 50% modulation (+/-25Khz)
EBU color bars Video signal,
using CCIR 468.2 weighting filter
For More Information On This Product,
Figure 5. Typical Audio Performance
48
46
58
56
54
52
50
471
MC44BS374CA Technical data
FM Audio Weighted Signal to Noise
Go to: www.freescale.com
Test Conditions
521
Typical
571
Frequency (Mhz)
NOTE:
621
Minimum specification
671
721
o
C, Video Input 1V
771
Min
-2.0
821
13
76
76
45
50
9
-
871
Typ
0.2
12
16
80
80
53
54
-
p-p
Audio Characteristics
Max
+2.0
, 10-step grayscale.
0.8
15
19
84
84
61
-
Unit
K Ω
dB
dB
dB
%
%
%
Type
B
B
B
A
C
C
C