MC44BS373CAFCR2 Freescale Semiconductor, MC44BS373CAFCR2 Datasheet - Page 16

• Manufacturer Part Number: MC44BS373CAFCR2
• Description: IC MODULATOR AUD/VID U/V 20-QFN
• Manufacturer: Freescale Semiconductor

Specifications of MC44BS373CAFCR2

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 20-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1
Audio Characteristics
Audio Characteristics
13 Audio Characteristics
Each of the characteristics listed in Table 22 is classified as one of the following types:
See Section 14, “Characterization Measurement Conditions,” for each C-type parameter.
Unless otherwise stated, V
grey scale and RF output into 75-Ω load.
Picture-to-sound ratio
Audio modulation depth
Audio input resistance
Audio frequency response Reference 0dB at 1kHz
Audio distortion FM
(THD only)
Audio distortion AM
(THD only)
Audio S/N with sync
buzz FM
Audio S/N with sync
buzz AM
See Section 14, “Characterization Measurement Conditions.”
•
•
•
•
Parameter
A—100% tested
B—100% correlation tested
C—Characterized on samples
D—Design parameter
Specifications are only valid for envelope demodulation.
PS bit set to 1
PS bit set to 0
Using specific pre-emphasis circuit,
audio input level = 205 mVrms, audio frequency = 1 kHz
AM modulation: SECAM Fs=6.5MHz
FM modulation: Fs=5.5, 6, or 6.5 MHz
100% modulation = ±50 kHz FM deviation
FM modulation: NTSC Fs=4.5MHz
100% modulation = ±25 kHz FM deviation
using specified pre-emphasis circuit,
measured from 50 Hz to 15 kHz
(depends on loop filter components)
At 1 kHz, 100% modulation (±50 kHz)
No video
At 1 kHz, 100% modulation
No video
Ref 1 kHz, 50% modulation (±25 kHz)
EBU color bars video signal,
using CCIR 468-2 weighting filter
Reference 1kHz, 85% modulation
Video input EBU color bar 75%
Audio BW 40Hz–15kHz,
using CCIR 468-2 weighting filter
CC
Table 22. Audio Performance Characteristics
= 5.0V, ambient temperature = 25°C, and video input is 1 Vp-p, with 10-step
Test Conditions
MC44BS373CA Data Sheet
NOTE
Minimum Typical Maximum Unit Type
–2.0
13
76
76
45
50
45
76
—
—
9
1
0.2
1.5
16
12
80
80
80
53
54
50
—
+2.0
0.8
2.5
19
15
84
84
84
61
—
—
KΩ
dB
dB
dB
dB
%
%
%
%
%
B
B
B
B
A
C
C
D
C
D