MC44353 MC44354 MC44355
AUDIO CHARACTERISTICS
Characteristic
Audio input level AM Step 3, (SECAM)
fs = 6.5 MHz, (for 8 steps see Table 4 –
MC44353 Only)
Audio input level FM Step 3
fs = 5.5, 6.0 or 6.5 MHz, (for 8 steps see
table 4 – MC44353/4 Only
Audio input Level FM
fs = 5.5, 6.0 or 6.5 MHz (MC44355 Only)
Audio input level FM Step 3
fs = 4.5 MHz (NTSC), (for 8 steps see
table 4 – MC44353/4 Only
Audio input Level FM
fs = 4.5 MHz (NTSC) (MC44355 Only)
Audio input resistance
Audio Frequency response
Minimum
Minimum
Maximum
Audio Distortion FM (THD only)
Audio Distortion AM (THD only)
Audio S/N with Sync Buzz FM
Audio S/N with Sync Buzz AM
Test Conditions
for 85% AM modulation of sound
subcarrier
b
i
Min
240
Typ
290
Max
340
Unit
mVrms
Type
B@
6.5
MHz
B@
5.5
MHz
B@
5.5
MHz
D
240
for /
f +/– 40 kH d i i using
kHz deviation i
specified pre–emphasis circuit
(FM), Audio frequency= 1.0 kHz
305
370
mVrms
155
195
235
mVrms
240
for 20 kHz deviation i
f
±20
kH d i i using
specified p
pre–emphasis circuit
p
p
(FM), Audio frequency= 1.0 kHz
at 15 kHz
–3.0 dB; ref 1.0 kHz; using
specified pre–emphasis circuit
–1.5 dB; ref 1.0 kHz; using
;
;
g
specified pre–emphasis circuit
@ 1.0 kHz; 100% mod (±50 kHz
No Video
@ 1.0 kHz; 85% mod, No Video
See Figure 8
Ref 1 khz; 85% mod; Video input
EBU color bar 75%; Audio BW 40
Hz to 15 kHz – Weighing filter
CCIR 468–2
Step 3 (typ 80%) PAL & Step 1
(typ 80%) SECAM Video Mod
depth
305
370
mVrms
155
30
–
–
15
–
–
–
45
195
50
–
–
–
0.4
1.5
Figure 8
50
235
75
40
60
–
2
2.5
Figure 8
–
mVrms
kΩ
Hz
Hz
kHz
%
%
dB
dB
D
B
D
D
D
C
D
C
D
Sound/Picture ratio Step 3 (8 steps of 1.0
dB, see table P/S Ratio – MC44353/4
only)
Sound/Picture ratio Step 5 (2 settings, see
table P/S Ratio – MC44355 only)
NOTE:
11
14.5
18
dB
B
13
16.5
20
dB
B
1. The frequency dependent specifications are greatly influenced by the PCB layout in the application. These specifications have all been measured
using a Motorola application layout and circuit similarly as shown in Figures 19 and 21. The reference number for ordering this evaluation board
is MC44350EVK.
Figure 8. Audio Signal to Noise
60
Typical Performance
55
dB
Maximum Specification Limit
50
45
21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69
Channel Number
MOTOROLA ANALOG IC DEVICE DATA
7
MOTOROLA [ MOTOROLA, INC ]
