Preliminary specification
File under BU Tuners, DC03
1996 Mar 19
Page 2
Philips ComponentsPreliminary specification
Desktop video tuner
system RTMA M/N
FEATURES
• System RTMA M and N
• True 5 V device (low power dissipation)
• Full frequency range from channel 2 (55.25 MHz) to
channel 69 (801.25 MHz)
• PLL controlled tuning
• True-synchronous vision IF demodulator (PLL)
• Demodulated video output, AF sound output, second
sound IF output
• I2C-bus control of tuning, address selection, AFC status
information
• Complies with FCC and DOC regulations on radiation
• Small horizontally mounted metal housing.
DESCRIPTION
The FI1236MK2 is designed to meet a wide range of RF
applications in the PC Multi-Media environment.
The FI1236MK2 types are available with a single 75 Ω
input for TV reception. The input connector is available in
either standard phono (female socket) or F (female
socket).
The tuning and bandswitching are performed through the
built-in digitally controlled I
FCC and DOC radiation requirements.
The FI1236MK2 consists of a tuner section and an IF
section, which are all designed on a single PCB. The
front-end is assembled in a metal housing made of a
rectangular tin plated steel frame with front and rear covers
which have soldered contacts to the frame. A single phono
or F aerial socket is mounted on one side of the frame. All
other connections are made via pins at the bottom.
The tuner section is equipped with 3 tuned RF MOSFET
input stages, with a 3-band mixer-oscillator IC, containing
the oscillators, mixers and IF amplifier. Tuning and band
switching in the tuner section are done with a digital
programmable PLL tuning system. This enables tuning
with step-size programmable between
31.25, 50.0 or 62.5 kHz. A DC-DC converter is built
around the PLL synthesizer IC to provide the tuning
voltage, thus making the FI1236MK2 front-end a true 5 V
device.
The IF section uses a true-synchronous vision IF
demodulator (PLL) with an intercarrier SAW filter in front of
it. The analog AFC voltage is fed to the 5-level A/D
converter in the PLL tuning IC, so that the AFC status can
be read via the I
ambient temperature25 ±5°C
RHrelative humidity60 ±15%
V
Z
Z
t
pr
Z
S
CVBS
IF
S(AE)
supply voltage (tuner and IF section)5 ±0.125V
video output load impedance (DC)>75Ω
IF sound output load impedance (DC)>500Ω
pre-heating time (+5 V at pin 24)10minute
aerial source impedance (unbalanced)75Ω
1996 Mar 196
Page 7
Philips ComponentsPreliminary specification
Desktop video tuner
FI1236MK2
system RTMA M/N
TUNER SECTION
Tuner characteristics
For detailed information about the PLL programming, refer to Chapter “Application information”.
The desktop video tuner is guaranteed to function properly within the specified operational conditions, but a certain
deterioration of performance parameters may occur at the limits of the operational conditions.
Test equipment
EQUIPMENTPARAMETERVALUEUNIT
DC voltmeterinput impedance>1MΩ
Oscilloscopeinput impedance:
resistance>1MΩ
capacitance<15pF
Spectrum analyzerinput impedance50Ω
FET probeinput impedance:
resistance1MΩ
capacitance3.5pF
output impedance50Ω
voltage gain0dB
1996 Mar 197
Page 8
Philips ComponentsPreliminary specification
Desktop video tuner
system RTMA M/N
handbook, full pagewidth
IF
output
BU2
aerial
connector
V
T
V
S
SCL
SDA
IF
PROBE
OUT
11
12 13 14 15
TP2 TP3
10 nF
nF
kΩ
FI1236MK2
22 23 24 25
1
3
33
µF
TEST JIG
video
P
(1) BU4 loaded with 75 Ω.
(2) 75 µs de-emphasis.
SA =spectrum analyzer.
P = FET probe.
DA = distortion analyzer.
The minimum load impedance required at the CVBS output (pin 23) is 75 Ω (both AC and DC).
Fig.2 Typical test set up.
out
(1)
+5 V
75
nF
BU6BU2BU4BU5
1
kΩ
(2)
DASA
CCA021
1996 Mar 198
Page 9
Philips ComponentsPreliminary specification
Desktop video tuner
FI1236MK2
system RTMA M/N
Definitions of test signals (see Fig.2)
TEST SIGNAL
A0: unmodulated vision
carrier
A1: RTMA M/N standard
signal with video modulation
B1: unmodulated sound
carrier M system
B2: FM modulated sound
carrier M system
B3: unmodulated sound
carrier M system
Aerial input characteristics
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
VSWRreflection coefficientreferred to 75 Ω impedance (worst case on
V
V
PSM
ant
surge protection voltage5−kV
antenna connection
disturbance voltage
FREQ.
(MHz)
477.2560 dBµV
477.2560 dBµV
481.25−7 dB w.r.t.
481.25−7 dB w.r.t.
483.25−12 dB w.r.t.
AMPLITUDE
(top sync)
A0 to A1
A0 to A1
A0 to A1
or between picture and sound carrier at
maximum gain)
54 MHz to <300 MHz−34dBµV
300 MHz to <1000 MHz−50dBµV
VIDEOAUDIO
100% (rest carrier 12.5%)
2T pulse and bar
MODULATION
1 kHz; modulation frequency
deviation ±25 kHz;
75 µs pre-emphasis
−5
1996 Mar 199
Page 10
Philips ComponentsPreliminary specification
Desktop video tuner
FI1236MK2
system RTMA M/N
General characteristics
SYMBOLPARAMETERCONDITIONSMIN.TYP.MAX.UNIT
f
∆f
α
α
Z
m
V
t
α
V
b
b
i
IF
IF
x
osc
li
vs
ESD
frequency range:
low band55.25−157.25MHz
mid band163.25−451.25MHz
high band457.25−801.25MHz
margin:
for low band1.5−− MHz
for mid/high band3−− MHz
image rejection (nominal gain to
10 dB gain reduction):
low band (channel 2 to 6)60−− dB
mid band (channel 7 to 13)60−− dB
high band (channel 14 to 69)50−− dB
IF rejection (picture)60−− dB
1
⁄2 IF susceptibility:
channel 2 to 1375−− dBµV
channel 14 to 6960−− dBµV
cross modulation:
in-channel65−− dBµV
in-band
low band (n ±2)78−− dBµV
mid band (n ±3)78−− dBµV
high band (n ±5)84−− dBµV
out of band−100−dBµV
breakthrough susceptibility:
channel 2 to 6960−− dBµV
oscillator voltage at all pins−−70dBµV
oscillators lock-in timecharge pump set logic
−−150ms
HIGH
the video signal-to-sound interference
40−− dB
ratio with the tuner exposed to sound
signals in the audio frequency range
100 Hz to 10 kHz and sound pressure
levels up to 105 dB (20 µPa)
electrostatic discharge (ESD)
note 12−− kV
on all pins
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”)
.
1996 Mar 1910
Page 11
Philips ComponentsPreliminary specification
Desktop video tuner
FI1236MK2
system RTMA M/N
Video and audio characteristics (see Fig.2)
PARAMETERTEST SIGNAL
CVBS characteristics:
video amplitude signal at pin 23A1 (peak-to-peak value)BU40.7−1.1V
DC level sync pulse at pin 23A1BU4−0.35−V
Video amplitude drop with respect to modulation
0.1 MHz at T
amb
=45°C:
at 1 MHzA1BU4−1.0−+1.0dB
at 2 MHzA1BU4−1.5−+1.5dB
at 3 MHzA1BU4−2.5−+1.5dB
at 3.58 MHzA1BU4−4.0−+2.0dB
Sound carrier rejectionA1 (1 MHz) + B1BU440−− dB
Residual 47.25 MHz signal in video channel:
A1 + B3BU4−−68dBµV
level of 1.5 MHz
Residual 91.5 MHz signal in video channelA1BU4−−80dBµV
Second IF sound output level at level of 4.5 MHzA1 + B1BU584−− dBµV
Test on 2T pulse at T
RMS detector, de-emphasis off
AM suppression ratioA1 + B2BU640−− dB
TEST
POINT
MIN. TYP. MAX.UNIT
BU641−− dB
Digital AFC status
PARAMETERCONDITIONS
ADC word at I
2
C-bus during read operationinput voltage at pin 10:
0.0 to 0.15V
0.15 to 0.30V
0.30 to 0.45V
0.45 to 0.60V
0.60 to 1.00V
1996 Mar 1911
FREQUENCY
(kHz)
S
S
S
S
S
−12500
−62.501
002
+62.503
+12504
DIGITAL
READ-OUT
Page 12
Philips ComponentsPreliminary specification
Desktop video tuner
FI1236MK2
system RTMA M/N
APPLICATION INFORMATION
A detailed description of the I2C-bus specification, with applications, is given in brochure
use it”.
This brochure may be ordered using the code number 9398 393 40011.
WRITE mode
BITS
BYTE
7
MSB
654321
Address byte11000MA1MA00A
Program divider byte 10n14n13n12n11n10n9n8A
Program divider byte 2n7n6n5n4n3n2n1n0A
Control information byte 11CPT2T1T0RSARSBOSA
Control information byte 2P7P6P5P4P3P2P1P0A
Note
1. A = Acknowledge.
A
DDRESS SELECTION
VS= +5 V (PLL supply voltage)
“The I2C-bus and how to
0
LSB
(1)
A
MA1MA0ADDRESSVOLTAGE AT PIN 15
00C00 to 0.1V
01C20.2 to 0.3V
10C40.4 to 0.6V
11C60.9VSto V
P
ROGRAMMABLE DIVIDER SETTINGS (BYTES 1 AND 2)
S
S
S
S
Divider ratio:
N=16×{f
f
=N⁄16(MHz).
osc
RF(pc)
+ f
}, where (pc) is picture carrier and fRF and fIF are expressed in MHz.
Remark: for channel selection involving band switching, and to ensure smooth tuning to the desired channel without
causing unnecessary charge pump action, it is recommended to consider the difference between wanted channel
frequency (fw) and the current channel frequency (fc):
Unnecessary charge pump action will result in very low tuning voltage (VT≈ 0 V) which may drive the oscillator to extreme
conditions.
1996 Mar 1913
Page 14
Philips ComponentsPreliminary specification
Desktop video tuner
FI1236MK2
system RTMA M/N
READ mode
The in-lock can be read by setting the R/W bit to 1.
BITS
BYTE
Address byte11000MA1MA01A
Status bytePOR
Notes
1. POR = Power On Reset. POR is internally set to 1 in case V
data is detected by the PLL IC.
2. FL = In-lock flag; FL = 1: loop is phase-locked. The loop must be phase-locked during at least 8 periods of the internal
7.8125 kHz reference frequency before the FL flag is internally set to 1.
3. I2, I1 and I0 = digital information for I/O ports P2, P1 and P0 respectively.
4. A2, A1 and A0 = built-in 5-level A/D converter on I/O port P6. AFC information to the controller of the IF section is
available on pin 10 (see Table “Digital AFC status”).
5. A = Acknowledge.
7
MSB
(1)
654321
FL
(2)
(3)
I2
(3)
I1
(3)
I0
drops below 3 V. The POR bit is reset when an end of
S
A2
(4)
A1
(4)
0
LSB
(4)
A0
(5)
A
A
T
ELEGRAM EXAMPLES (READ MODE)
Start - Adb - Ack - STB - Ack - STB - - Stop (no Ack from processor = End-of-data).
Start - Adb - Ack - STB - - Stop (no Ack from processor = End-of-data).
Where:
STB = Status byte.
Video buffer
A video buffer is built into the video module to enable the
unit to drive a 75 Ω load directly. In case it is required to
handbook, halfpage
V
CC
use the FI1236MK2 as a replacement for the FI1236 in the
same videocard, it is necessary to replace the 75 Ω series
R1
resistor in the video card by a 0 Ω series resistor. At the
same time the 22 kΩ series resistor in the tuning supply
must be removed.
2
C-bus load
I
R2
The FI1236MK2 contains a series resistor (R = 100 Ω) in
the SCL and SDA lines. Both lines also have a capacitive
load of typical 56 pF (see Fig.3).
PLL IC
R3
100 Ω
R4
100 Ω
R5
100 Ω
C1
56 pF
C2
56 pF
C3
56 pF
15
AS
14
SDA
13
SCL
MBH031
1996 Mar 1914
Fig.3 I
2
C-bus load.
Page 15
Philips ComponentsPreliminary specification
Desktop video tuner
system RTMA M/N
MECHANICAL DATA
handbook, full pagewidth
(1)
27.6
33.7
26.9
+0.2
0
25.9
20.6
16.6
15.8
10.4
9.7
11.5
30.8
31.6
STANDARD PHONO CONNECTOR
34.2
+0.2
0
∅ 8.35
FI1236MK2
8.1
± 0.3
(1)
7.9
∅ 6.35
5.1
0.8
+0.10
−0.04
8.5
± 0.2
1
TH4
2.5
2
14.74
11 12 13 14 15
0.64 × 0.64
59.2
∅ 3 (2×)
78.4
84.5
89.2
45.4
21 22
4.445
17.5
12.3
3/8 × 32
UNEF 2A
1.5
(2×)
(2)
F CONNECTOR
13.5 max
12.9 max
5.2
6
(2×)
5
1.5 (2×)
34.7
2.6
38.5
28.55
CCA022
0.5
∅ 12.3
(0.6)
TH2
41
23 24
TH3
25
2.6
1.1
Dimensions in mm.
(1) Standard phono socket female 75 Ω.
(2) Alternative F connection.
Fig.4 Mechanical outline.
1996 Mar 1915
Page 16
Philips ComponentsPreliminary specification
Desktop video tuner
system RTMA M/N
Aerial connections
Standard-phono socket female 75 Ω or F (female).
Solderability
The solderability of pins and mounting tags when tested
initially and after 16 hours steam ageing in accordance
with
“IEC 68-2-20”
for 2 s), results in a wetted area of 95%. No de-wetting will
occur when soldered at 260 °Cfor5s.
Resistance to soldering heat
The product will not be damaged when tested in
accordance with
(solder bath 260 °C for 10 ±1 s).
handbook, full pagewidth
, test Ta, method 1 (solder bath 235 °C
“IEC 68-2-20”
, test Tb, method 1A
3.4
2.3
2
FI1236MK2
Mass
Approximately 50 g.
Robustness of pins
The pins will not be damaged when tested in accordance
with
“IEC 68-2-21”
• Test Ua1, tensile of 10 N in axial direction
• Test Ua2, thrust of 4 N in axial direction.
Punching pattern of chassis PCB
Field rejects are often related to broken tag joints.
Therefore, the following punching pattern is recommended
(see Fig.5).
78.4
:
0.9
Dimensions in mm.
unit
contour
∅ 2.1∅ 1.1
14.7
4.445
59.2
Fig.5 Punching pattern seen from solder side.
34.7
2.6
MGB514 - 1
1996 Mar 1916
Page 17
Philips ComponentsPreliminary specification
Desktop video tuner
FI1236MK2
system RTMA M/N
DEFINITIONS
Data sheet status
Objective specificationThis data sheet contains target or goal specifications for product development.
Preliminary specificationThis data sheet contains preliminary data; supplementary data may be published later.
Product specificationThis data sheet contains final product specifications.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
2
PURCHASE OF PHILIPS I
C COMPONENTS
2
Purchase of Philips I
components in the I2C system provided the system conforms to the I2C specification defined by
Philips. This specification can be ordered using the code 9398 393 40011.
C components conveys a license under the Philips’ I2C patent to use the
1996 Mar 1917
Page 18
Philips ComponentsPreliminary specification
Desktop video tuner
system RTMA M/N
FI1236MK2
NOTES
1996 Mar 1918
Page 19
Philips ComponentsPreliminary specification
Desktop video tuner
system RTMA M/N
FI1236MK2
NOTES
1996 Mar 1919
Page 20
Philips Components – a worldwide company
Argentina: IEROD, Av. Juramento, 1991-14.B, (1428) BUENOS AIRES,
For all other countries apply to: Philips Components,
Marketing Communications, P.O. Box 218, 5600 MD EINDHOVEN,
The Netherlands, Telex 35000 phtcnl, Fax. +31-40-2724 547.
All rights are reserved. Reproduction in whole or in part is prohibited without the
prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation
or contract, is believed to be accurate and reliable and may be changed without
notice. No liability will be accepted by the publisher for any consequence of its
use. Publication thereof does not convey nor imply any license under patent- or
other industrial or intellectual property rights.
Printed in The Netherlands
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