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Número de pieza | FM1246 | |
Descripción | Desktop video & FM radio module system CCIR I | |
Fabricantes | NXP Semiconductors | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de FM1246 (archivo pdf) en la parte inferior de esta página. Total 24 Páginas | ||
No Preview Available ! TUNERS
DATA SHEET
FM1246
Desktop video & FM radio module
system CCIR I
Preliminary specification
File under Tuners, DC03
1997 May 14
1 page Philips Components
Desktop video & FM radio module
system CCIR I
Preliminary specification
FM1246
LIMITING VALUES
Limiting values under operational conditions
The tuner can be guaranteed to function properly under the following conditions.
SYMBOL
PARAMETER
PIN MIN. TYP. MAX. UNIT
VS supply voltage
4.75 5.00 5.25 V
VS(ripple)
peak-to-peak ripple voltage susceptibility
(at 5 V ±5%); note 1
20 Hz to 100 kHz
12 − − 5 mV
>100 kHz to 500 kHz
− − 10 mV
IS(tuner)
supply current
− − 120 mA
VSCL
SCL bus input voltage
13 −0.3 −
+5.25 V
VSDA
ISDA
SDA bus input voltage
SDA bus current (open collector)
−0.3 −
14
−1 −
+5.25 V
+5 mA
VAS address select voltage; note 2
15 − − +5.25 V
VAFright(FM) FM right channel DC voltage
− 1.0 − V
ZAFright(FM) FM right channel load impedance parallel connected:
20
resistive value
−
50 −
kΩ
capacitive value
− 9 − pF
VAFleft(FM) FM left channel DC voltage
− 1.0 − V
ZAFleft(FM)
FM left channel load impedance:
resistive value
21
−
50 −
kΩ
capacitive value
− 9 − pF
ZIF 2nd IF sound output load impedance
22 0.5
−
−
kΩ
ZCVBS
tL
Composite Video Baseband Signal load impedance
CVBS load time constant
−
23
−
75 −
Ω
− 100 ns
VS(IF)
IS(IF)
IF supply voltage
IF supply current
4.75 5.0
24
−−
5.25 V
150 mA
ZAF AF sound output load impedance parallel connected:
resistive value
25 5.0
−
−
kΩ
capacitive value
− − 4 nF
Notes
1. Sinusoidal ripple voltage superimposed on the 5 V supply voltage in the frequency range of 20 Hz to 500 kHz.
Criteria for TV interference >57 dB.
2. For detailed information about the address decoding, refer to Chapter “Application information”.
1997 May 14
5
5 Page Philips Components
Desktop video & FM radio module
system CCIR I
Preliminary specification
FM1246
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
FM radio characteristics
α26 limiting sensitivity for (S+N)/N
α50
S/N ratio:
mono at f = 22.5 kHz
mono at f = 75 kHz
stereo
αi(FM)
FM image rejection
effective selectivity S300
frequency response:
lower −3 dB point
upper −3 dB point
AM suppression
FM AF output level at
terminal 20/21 (RMS value):
mono
stereo
stereo separation
THD
total harmonic distortion:
stereo at 1 kHz
during overmodulation at
f = ±100 kHz
test signal C1
− 7 30
test signal C3
− 30 40
test signal C1
55 58 −
65 68 −
test signal C3
55 63 −
test signal C1
53 65 −
test signal C1 + C2
50 −
−
test signal C3; −3 dB points
− 20 40
14 18 −
test signal C1
38 −
−
dBµV
dBµV
dB
dB
dB
dB
dB
Hz
kHz
dB
test signal C1
test signal C3
test signal C3; 1 kHz
test signal C3
40 57 74
120 175 230
28 35 −
− 0.8 1.5
− 1.5 3
mV
mV
dB
%
%
Note
1. All the pins of the desktop video tuner are protected against electrostatic discharge (ESD) up to 2 kV. The product is
classified in category B (‘‘MIL-STD-883C”).
1997 May 14
11
11 Page |
Páginas | Total 24 Páginas | |
PDF Descargar | [ Datasheet FM1246.PDF ] |
Número de pieza | Descripción | Fabricantes |
FM1246 | Desktop video & FM radio module system CCIR I | NXP Semiconductors |
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