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MC44354DW Ver la hoja de datos (PDF) - Motorola => Freescale

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MC44354DW Datasheet PDF : 20 Pages
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MC44353 MC44354 MC44355
AUDIO CHARACTERISTICS
Characteristic
Test Conditions
Min
Typ
Max
Unit Type
Audio input level AM Step 3, (SECAM)
for 85% AM modulation of sound
240
290
340
mVrms B @
fs = 6.5 MHz, (for 8 steps see Table 4 –
subcarrier
6.5
MC44353 Only)
MHz
Audio input level FM Step 3
240
305
370
mVrms B @
fs = 5.5, 6.0 or 6.5 MHz, (for 8 steps see
5.5
table 4 – MC44353/4 Only
for +/– 40 kHz deviation using
MHz
specified pre–emphasis circuit
Audio input Level FM
(FM), Audio frequency= 1.0 kHz
155
195
235
mVrms B @
fs = 5.5, 6.0 or 6.5 MHz (MC44355 Only)
5.5
MHz
Audio input level FM Step 3
240
305
370
mVrms
D
fs = 4.5 MHz (NTSC), (for 8 steps see
table 4 – MC44353/4 Only
for ±20 kHz deviation using
specified pre–emphasis circuit
Audio input Level FM
(FM), Audio frequency= 1.0 kHz
155
195
235
mVrms
D
fs = 4.5 MHz (NTSC) (MC44355 Only)
Audio input resistance
at 15 kHz
30
50
75
k
B
Audio Frequency response
Minimum
Minimum
Maximum
–3.0 dB; ref 1.0 kHz; using
40
Hz
D
specified pre–emphasis circuit
–1.5 dB; ref 1.0 kHz; using
60
Hz
D
specified pre–emphasis circuit
15
kHz
D
Audio Distortion FM (THD only)
@ 1.0 kHz; 100% mod (±50 kHz
0.4
2
%
C
No Video
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
45
50
EBU color bar 75%; Audio BW 40
Hz to 15 kHz – Weighing filter
CCIR 468–2
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.
Figure 8. Audio Signal to Noise
60
Typical Performance
55
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
 

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