FM1246/HM/I PHILIPS [NXP Semiconductors], FM1246/HM/I Datasheet - Page 12

• Manufacturer Part Number: FM1246/HM/I
• Description: Desktop video & FM radio module system CCIR I
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Components
Video and audio characteristics (see Fig.2)
Digital AFC status
ADC word at I
1997 May 14
CVBS characteristics:
Video amplitude drop with respect to modulation
1 MHz at T
Sound carrier rejection
Residual 40.40 MHz signal in video channel:
level of 1.5 MHz
Residual 77.8 MHz signal in video channel
Second IF sound output level at level of 6.0 MHz
Test on 2T pulse at T
CVBS S/N (unweighted)
Gain limited sensitivity at 1 dB reduction
of video output
Maximum usable single input signal
Audio characteristics:
AM suppression ratio
Aerial input level for S/N = 41 dB
Desktop video & FM radio module
system CCIR I
video amplitude signal at pin 23
DC level sync pulse at pin 23
at 2 MHz
at 3 MHz
at 4 MHz
at 4.43 MHz
2T pulse/bar response
2T pulse response
AF output level measured via LP 200 kHz filter,
RMS detector, 50 s de-emphasis
THD (Total Harmonic Distortion) measured
via LP 200 kHz filter, RMS detector,
50 s de-emphasis
S/N measured via CCIR filter, peak
CCIR detector, 50 s de-emphasis
amb
2
C-bus during read operation
= 45 C:
PARAMETER
READ-OUT
DIGITAL
amb
00
01
02
03
04
= 45 C:
A1 (peak-to-peak value)
A1
A1
A1
A1
A1
A1 (1 MHz) + B1
A1 + B3
A1
A1 (black) + B1
A1
A1
A1 + B1
A1
A1
A1 + B2
A1 + B2
A1 (full field colour bar)
+ B1
A1 (black) + B2
A1 (black) + B2
TEST SIGNAL
12
FREQUENCY
BU4
BU4
BU4
BU4
BU4
BU4
BU4
BU4
BU4
BU5
BU4
BU4
BU4
BU4
BU4
BU6
BU6
BU6
BU6
BU6
POINT
TEST
(kHz)
125
125
62.5
62.5
0
0.75
40
84
41
90
250
38
40
MIN. TYP. MAX.
1.5
2.5
4.0
4.0
2.8
Preliminary specification
0.95
0.7
350
1.15
68
80
30
450
0.5
45
FM1246
1.5
1.5
2.0
2.0
2.8
3.5
V
V
dB
dB
dB
dB
dB
dB V
dB V
dB V
%
%
dB
dB V
dB V
mV
%
dB
dB
dB V
UNIT