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