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)

for 85% AM modulation of sound

bi

240

290

340

mVrms

B @

fs = 6.5 MHz, (for 8 steps see Table 4 –

MC44353 Only)

subcarrier

6.5

MHz

Audio input level FM Step 3

f

/ 40 kH d

i i

i

240

305

370

mVrms

B @

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

5.5

MHz

Audio input Level FM

specified pre–emphasis circuit

(FM), Audio frequency= 1.0 kHz

155

195

235

mVrms

B @

fs = 5.5, 6.0 or 6.5 MHz (MC44355 Only)

(FM), Audio frequency= 1.0 kHz

5.5

MHz

Audio input level FM Step 3

f20 kH d

i i

i

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

pp

p

(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

Ω

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

–

–

60

Hz

D

Maximum

;;

g

specified pre–emphasis circuit

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

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