Datasheet FM1236 Datasheet (Philips)

BU TUNERS

DATA SH EET

FM1236

Desktop video & FM radio module
system M, N

Preliminary specification
File under BU Tuners, DC03

1997 Feb 03

Philips Components Preliminary specification

Desktop video & FM radio module
system M, N

FEATURES

• System M and N, and FM radio broadcast

• True 5 V device (low power dissipation)

• Full frequency range from channel 2

(55.25 MHz) to channel 69 (801.25 MHz)

• FM band coverage from 76.0 MHz to 108.0 MHz

• PLL controlled tuning

• Programmable PLL step size (31.25, 50 or 62.5 kHz)

• True-synchronous vision IF demodulator (PLL)

• Ultra linear FM PLL demodulator for FM broadcast

• Demodulated video output, AF sound output, second

sound IF output

• I2C-bus control of tuning, address selection, AFC status
information

• Complies with FCC, DOC and JIS regulations on
radiation

• Small horizontally mounted metal housing.

FM1236

the PLL tuning IC, so that the AFC status can be read via
the I2C-bus.

In the FM radio mode, the level detector and AFT functions
are provide for the auto-search routines. The level detector
and AFT status can be read from the A/D bits in the
status-byte. The mute function is also provided to
suppress the audio output signal, if required.

The tuner AGC for both TV and FM radio operation, is
generated with a novel AGC detector which measures the
IF signal level directly at the tuner IF output terminals. As
opposed to the conventional AGC detector, this new circuit
allows a higher take-over level and offers superior
immunity against tuner overload.

DESCRIPTION

The FM1236 front-end is designed to receive both TV and
FM stereo signals in the PC Multimedia environment. The
units are available with separate 75 Ω inputs for TV and
FM broadcast reception. The input connectors available
are either standard phono or F type. The tuning,
bandswitching and antenna selection are made through

2

C bus.

the I
The front-end covers the TV bands from 55.25 MHz to

801.25 MHz, inclusive of the Japanese TV bands from

91.25 MHz to 765.25 MHz. The FM band covers the

standard 87.50 MHz to 108.00 MHz and also the
Japanese FM band (76.00 MHz to 91.00 MHz). An RDS
decoder can be connected to the AF-MPX output. The
FM1236 meets the input immunity and radiation
requirements of the FCC, DOC and JIS.

The FM1236 consists of a TV tuner, an FM radio tuner and
an IF section, 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. The two phono or
F antenna connectors (female) are mounted on one side
of the frame for the TV/FM signal inputs. All other
connections are made via pins at the bottom.

The TV IF section uses an intercarrier SAW filter, followed
by a true-synchronous vision IF demodulator (PLL) IC. The
analog AFC voltage is fed to the 5-level A/D converter in

The demodulation of the TV sound (4.5 MHz) and FM IF
(10.70 MHz) is done with a PLL demodulation circuit
contained in the IF IC. In the FM radio mode, the
multiplexed AF signal is then channelled to a stereo
decoder IC which extracts the left/right analog signals. The
multiplexed audio signal is also available at pin 25 to
support RDS or BTSC implementations. The 2nd IF sound
output is provided to connect external (analog 2 carrier or
digital) stereo processing.

ORDERING INFORMATION

TYPE DESCRIPTION

FM1236/HM/PH standard phono 3139 147 13411
FM1236/HM/F F 3139 147 13421

MARKING

The following items of information are printed on a sticker
that is on the top cover of the tuner:

• Type number

• Code number

• Origin letter of factory

• Change code

• Year and week code.

CATALOGUE

NUMBERS

1997 Feb 03 2

Philips Components Preliminary specification

Desktop video & FM radio module

FM1236

system M, N

INTERMEDIATE FREQUENCIES

SYSTEM

Picture carrier 45.75
Colour 42.17
Sound 41.25
FM 10.70

CHANNEL COVERAGE

OFF-AIR CHANNELS CABLE CHANNELS

BAND

CHANNEL

FREQUENCY

(MHz)

CHANNEL

FM band − 76.00 to 108.00 −−
Low band 2 to 6 55.25 to 83.25 A-2 to G 109.25 to 157.25
Mid band 7 to 13 175.25 to 211.25 H to I 163.25 to 169.25

J to ZZ 217.25 to 451.25

High band 14 to 69 471.25 to 801.25 AAA to BBB (+6 MHz) 457.25 to 469.26

FREQUENCY

(MHz)

FREQUENCY

(MHz)

PINNING

SYMBOL PIN DESCRIPTION

V

T

V

S(tuner)

SCL 13 I
SDA 14 I
AS 15 I

11 tuning voltage (monitor)
12 supply voltage tuner section +5 V

2

C-bus serial clock

2

C-bus serial data

2

C-bus address select
AF O/P right 20 FM right channel
AF O/P left 21 FM left channel

nd

2

IF O/P 22 second IF sound output
CVBS 23 Composite Video Baseband Signal (CVBS) output
V

S(IF)

24 supply voltage IF section +5 V

AF O/P 25 AF sound output

− TH1, TH2,

mounting tags (ground)

TH3 and

TH4

1997 Feb 03 3

Philips Components Preliminary specification

Desktop video & FM radio module
system M, N

BLOCK DIAGRAM

2nd IF

FILTER

10.7 MHz

FILTER

AGC

DETECTOR

SAW

IF

V

VCO

PLL
VIF

DEMODULATOR

TRAP

FM

DEMODULATOR

FM-IF

10.7 MHz

DISCRIMINATOR

STEREO

DECODER

FILTER

10.7 MHz

FM1236

AF

(TV)

S(IF)

+5 V

V

CVBS

23

sound

output

2nd IF

AF-R AF-L

IF

MIXER - OSCILLATOR IC

HIGH BAND

OSC.

HIGH

MID

OSC.

MID BAND

LOW

OSC.

LOW BAND

VT

AFT

PLL

DC-DC

11 12 13 14 15 20 21 22 2524

CCA505

AS

SDA

SCL

+5 V

VT

S( tuner)

V

monitor

Fig.1 Electrical block diagram.

handbook, full pagewidth

TV

antenna

FM

antenna

1997 Feb 03 4

Philips Components Preliminary specification

Desktop video & FM radio module

FM1236

system M, N

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

V

S

V

S(ripple)

I

S(tuner)

V

SCL

V

SDA

I

SDA

V

AS

V

AFright(FM)

Z

AFright(FM)

V

AFleft(FM)

Z

AFleft(FM)

Z

IF

Z

CVBS

t

L

V

S(IF)

I

S(IF)

Z

AF

supply voltage
peak-to-peak ripple voltage susceptibility

(at5V±5%); note 1:

20 Hz to 100 kHz −−5mV

12

>100 kHz to 500 kHz −−10 mV
supply current −−120 mA
SCL bus input voltage 13 −0.3 − +5.25 V
SDA bus input voltage
SDA bus current (open collector) −1 − +5 mA

14

address select voltage; note 2 15 −−+5.25 V
FM right channel DC voltage
FM right channel load impedance parallel

connected:

20

resistive value − 40 − kΩ

capacitive value − 9 − pF
FM left channel DC voltage
FM left channel load impedance:

resistive value − 40 − kΩ

21

capacitive value − 9 − pF
2nd IF sound output load impedance 22 0.5 −−kΩ
Composite Video Baseband Signal load

impedance

23

CVBS load time constant −−100 ns
IF supply voltage
IF supply current −−150 mA

24

AF sound output load impedance parallel
connected:

resistive value 5.0 −−kΩ

25

capacitive value −−4nF

4.75 5.00 5.25 V

−0.3 − +5.25 V

− 1.0 − V

− 1.0 − V

− 75 −Ω

4.75 5.0 5.25 V

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 Feb 03 5

Philips Components Preliminary specification

Desktop video & FM radio module

FM1236

system M, N

Environmental conditions

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Non-operational conditions

T

amb

RH relative humidity −−100 %
g

B

g

S

Operational conditions

T

amb

RH relative humidity −−95 %

OVERALL PERFORMANCE
Conditional data

Unless otherwise specified, all electrical values for Chapter “Overall performance” apply at the following conditions.

ambient temperature −25 − +85 °C

bump acceleration 25 g −−245 m/s
shock acceleration 50 g −−490 m/s
vibration amplitude 10 to 55 Hz − 0.35 − mm

ambient temperature −10 − +60 °C

2
2

SYMBOL PARAMETER VALUE UNIT

T

amb

ambient temperature 25 ±5 °C
RH relative humidity 60 ±15 %
V
Z
Z
Z
t

pr

Z

S
CVBS
IF
AF

S(AE)

supply voltage (tuner and IF section) 5 ±0.125 V

video output load impedance (DC) 75 Ω

2nd IF sound output load impedance (DC) 0.5 kΩ

AF sound output load impedance 100 kΩ

pre-heating time (+5 V at pin 24) 10 minute

aerial source impedance (asymmetrical) 75 Ω

1997 Feb 03 6

Philips Components Preliminary specification

Desktop video & FM radio module

FM1236

system M, N

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.

Required data for test equipment to be used

EQUIPMENT PARAMETER VALUE UNIT

DC voltmeter input impedance >1 MΩ
Oscilloscope input impedance:

resistance >1 MΩ

capacitance <15 pF
Spectrum analyzer input impedance 50 Ω
FET probe input impedance:

resistance 1 MΩ

capacitance 3.5 pF

output impedance 50 Ω
voltage gain 0 dB

AC millivoltmeter input impedance >100 kΩ

1997 Feb 03 7

Philips Components Preliminary specification

Desktop video & FM radio module
system M, N

handbook, full pagewidth

IF

output

BU2

aerial

connector

V

T

V

S

SCL

SDA

IF

PROBE

OUT

11

1

/

TDA1308

2

12 13 14 15

240

kΩ

TP2 TP3

220

220

nF

nF

39
kΩ

563

2

240

kΩ

−

17

+

−

39
kΩ

+

84

1

/

TDA1308

2

+

+

µF

µF

FM1236

2120109 22 23 24 25

5 V

22
Ω

47

47

kΩ

47

1

kΩ

10

nF

kΩ

nF
3

1

33

µF

++

220

kΩ

47

µF

22

Ω

220

kΩ

47

µF

22

Ω

TEST JIG

CCA506

S1

15 kHz

LOW-PASS

FILTER

(1) BU4 loaded with 75 Ω.
(2) 75 µs de-emphasis.
SA = Spectrum Analyzer.
P = FET probe.
DA = Distortion Analyzer.
VAC = dual channel AC voltmeter (Zi= 600 Ω)
The minimum load impedance required at the CVBS output (pin 23) is 75 Ω (both AC and DC).

Fig.2 Typical test set up.

SA

BU6BU2BU4BU5BU8BU7

video

P

out

(1)

+5 V

15
nF

5

kΩ

(2)

DADA

1997 Feb 03 8

Philips Components Preliminary specification

Desktop video & FM radio module
system M, N

Definitions of test signals (see Fig.2)

TEST SIGNAL

A0: unmodulated vision
carrier

A1: RF M, N standard signal
with video modulation

B1: unmodulated sound
carrier M, N system

B2: FM modulated sound
carrier M, N system

B3: unmodulated sound
carrier M, N system

C1: FM modulated sound
carrier

C2: FM modulated sound
carrier

C3: FM modulated sound
carrier

FREQ.

(MHz)

477.25 60 dBµV

477.25 60 dBµV

481.25 −7 dB w.r.t.

481.25 −7 dB w.r.t.

483.25 −12 dB w.r.t.

98.00 60 dBµV 1 kHz; modulation frequency

97.70

or 98.30

98.00 60 dBµV 1 kHz; modulation frequency

AMPLITUDE

(top sync)

A0 to A1

A0 to A1

A0 to A1

60 dBµV 1 kHz; modulation frequency

FM1236

MODULATION

VIDEO AUDIO

100% (rest carrier 12.5%)
2T pulse and bar

1 kHz; modulation frequency
deviation ±25 kHz;
75 µs pre-emphasis

deviation ±22.5 kHz

deviation ±22.5 kHz

deviation ±75 kHz;
10% pilot carrier (L = R);
75 µs pre-emphasis

Aerial input characteristics

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

VSWR reflection coefficient referred to 75 Ω impedance

(worst case on or between picture
and sound carrier at maximum gain):

all channels in TV mode − 5

FM (centre of channel) − 4
V
V

PSM
ant

surge protection voltage 5 − kV
antenna connection disturbance

voltage

1 to <54 MHz − 10 dBµV
54 to <300 MHz − 34 dBµV
300 to <1000 MHz − 50 dBµV

1997 Feb 03 9

Philips Components Preliminary specification

Desktop video & FM radio module

FM1236

system M, N

General characteristics

SYMBOL PARAMETER CONDITIONS MIN. 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:

FM band 76.00 − 108.00 MHz
low band 55.25 − 157.25 MHz
mid band 163.25 − 451.25 MHz
high band 457.25 − 801.25 MHz

margin:

for FM band 3 −− MHz
for low band 1.5 −− MHz
for mid/high band 3 −− 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) 45 −− dB

IF rejection (picture) 60 −− dB

1

⁄2 IF susceptibility:

E2 to E13 75 −− dBµV
E14 to E69 60 −− dBµV

cross modulation:

in-channel 65 −− 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 69 60 −− dBµV
oscillator voltage at all pins −−70 dBµV
oscillators lock-in time charge pump set logic HIGH −−150 ms
the video signal-to-sound

40 −− dB
interference 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)

audio S/N ratio 40 −− dB
electrostatic discharge (ESD)

note 1 2 −− kV

on all pins

1997 Feb 03 10

Philips Components Preliminary specification

Desktop video & FM radio module

FM1236

system M, N

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

FM radio characteristics

α26 limiting sensitivity for (S+N)/N test signal C1 − 530 dBµV
α50 test signal C3 − 30 40 dBµV

S/N ratio: test signal C1

mono at f = 22.5 kHz 55 58 − dB
mono at f = 75 kHz 65 68 − dB
stereo test signal C3 55 63 − dB

α

i(FM)

FM image rejection test signal C1 53 60 − dB
effective selectivity S
frequency response: test signal C3; −3 dB points

lower −3 dB point − 20 40 Hz

upper −3 dB point 14 18 − kHz
AM suppression test signal C1 38 −− dB
FM AF output level at

terminal 20/21 (RMS value):

mono test signal C1 40 57 74 mV

stereo test signal C3 120 175 230 mV
stereo separation test signal C3; 1 kHz 28 35 − dB
total harmonic distortion: test signal C3

stereo at 1 kHz − 0.8 1.5 %

during overmodulation at

f=±100 kHz

300

test signal C1 + C2 50 −− dB

− 1.5 3 %

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 Feb 03 11

Philips Components Preliminary specification

Desktop video & FM radio module

FM1236

system M, N

Video and audio characteristics (see Fig.2)

PARAMETER TEST SIGNAL

CVBS characteristics:

video amplitude signal at pin 23 A1 (peak-to-peak value) BU4 0.75 0.95 1.15 V
DC level sync pulse at pin 23 A1 BU4 − 0.35 − V

Video amplitude drop with respect to modulation
1 MHz at T

at 2 MHz A1 BU4 −1.5 −+1.0 dB
at 3 MHz A1 BU4 −2.5 −+1.5 dB

at 3.58 MHz A1 BU4 −4.0 −+2.0 dB
Sound carrier rejection A1(1 MHz) + B1 BU4 40 −− dB
Residual 47.25 MHz signal in video channel:

level of 1.5 MHz
Residual 91.5 MHz signal in video channel A1 BU4 −−80 dBµV
Second IF sound output level at level of 4.5 MHz A1 (black) + B1 BU5 84 −− dBµV
Test on 2T pulse at T

2T pulse/bar response A1 BU4 −2.5 −+2.5 %

2T pulse response A1 BU4 −−+3.0 %
CVBS S/N (unweighted) A1 + B1 BU4 41 −− dB
Gain limited sensitivity at 1 dB reduction

of video output
Maximum usable single input signal A1 BU4 90 −− dBµV
Audio characteristics:

AF output level measured via LP 200 kHz filter,

RMS detector, 75 µs de-emphasis

THD (Total Harmonic Distortion) measured

via LP 200 kHz filter, RMS detector,

75 µs de-emphasis

S/N measured via CCIR filter, peak

CCIR detector, 75 µs de-emphasis
AM suppression ratio A1 (black) + B2 BU6 40 −− dB
Aerial input level for S/N = 41 dB A1 (black) + B2 BU6 −−45 dBµV

amb

=45°C:

amb

A1 + B3 BU4 −−68 dBµV

=45°C:

A1 BU4 −−30 dBµV

A1 + B2 BU6 0.21 0.31 0.41 V

A1 + B2 BU6 −−0.5 %

A1 (full field colour bar)
+B1

TEST

POINT

BU6 38 −− dB

MIN. TYP. MAX. UNIT

Digital AFC status

2

ADC word at I

1997 Feb 03 12

C-bus during read operation

DIGITAL

READ-OUT

00 −125
01 −62.5
02 0
03 +62.5
04 +125

FREQUENCY

(kHz)

Philips Components Preliminary specification

Desktop video & FM radio module

FM1236

system 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 byte 1 1 0 0 0 MA1 MA0 0 A
Program divider byte 1 0 n14 n13 n12 n11 n10 n9 n8 A
Program divider byte 2 n7 n6 n5 n4 n3 n2 n1 n0 A
Control information byte 1 1 CP T2 T1 T0 RSA RSB OS A
Control information byte 2 P7 P6 P5 P4 P3 P2 P1 P0 A

Note

1. A = Acknowledge.

A

DDRESS SELECTION

VS= +5 V (PLL supply voltage)

‘‘The I2C-bus and how to

0

LSB

(1)

A

MA1 MA0 ADDRESS VOLTAGE AT PIN 15 (see note 1)

0 0 C0 0 to 0.1V
0 1 C2 0.2 to 0.3V
1 0 C4 0.4 to 0.6V
1 1 C6 0.9VSto V

S
S
S

S

Note

1. If the AS pin is left floating, the internal bias will automatically set the address to C2.

P

ROGRAMMABLE DIVIDER SETTINGS (BYTES 1 AND 2)

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

IF(pc)

N = (8192 × n13) + (4096 × n12) + (2048 × n11) + (1024 × n10) + (512 × n9) + (256 × n8) + (128 × n7) + (64 × n6) +
(32 × n5) + (16 × n4) + (8 × n3) + (4 × n2)+(2×n1) + n0

C

ONTROL BYTE

Charge pump settings:

CP = 1, for fast tuning
CP = 0, for moderate speed tuning with slightly better residual oscillator FM.

It is recommended to set CP = 1 at all times in the TV mode. In the FM radio mode, set CP = 1 only during the search
tuning. Once the wanted channel is obtained, set CP = 0 to get the best signal-to-noise ratio.

Test mode settings:

T2 = T1 = 0; T0 = 1, for normal operation.

1997 Feb 03 13

Philips Components Preliminary specification

Desktop video & FM radio module

FM1236

system M, N

PLL disabling:

OS = 0, for normal operation
OS = 1, for switching the charge pump to the high impedance state.

Ratio select bits

RSA RSB STEP SIZE

X 0 50 kHz
0 1 31.25 kHz
1 1 62.5 kHz

P

ORTS BYTE

FUNCTION

TV/FM bandswitching

FM band 1010 1
Low band 1010 0
Mid band 1001 0
High band 0011 0

TV mode

Power down mode; see note 1 0001
System M, N negative mode 0000

FM radio mode

AFC; see note 2 0101
R

; see note 3 0100

IF

Mono 0110
Mute 1100

P7 P6 P5 P4 P3 P2 P1 P0

BIT

Notes

1. If the TV function is not required, the tuner can be switched to power-down mode. In this mode the tuner reduces the
current consumption by up to 100 mA.

2. By this setting the FM radio AFC status can be read from the A/D bits in the status byte.

3. By this setting the RF input level can be read from the A/D bits in the status byte.

1997 Feb 03 14

Philips Components Preliminary specification

Desktop video & FM radio module
system M, N

TELEGRAM EXAMPLES (WRITE MODE)
Start - Adb - Ack - Db1 - Ack - Db2 - Ack - Cb - Ack - Pb - Ack - Stop.
Start - Adb - Ack - Cb - Ack - Pb - Ack - Db1 - Ack - Db2 - Ack - Stop.
Start - Adb - Ack - Db1 - Ack - Db2 - Ack - Cb - Ack - Stop.
Start - Adb - Ack - Db1 - Ack - Db2 - Ack - Stop.
Where:

Start = start condition
Adb = address byte
Ack = acknowledge
Db1 = divider byte 1
Db2 = divider byte 2
Cb = control byte
Pb = ports byte
Stop = stop condition.

READ mode

The in-lock can be read by setting the R/W bit to 1.

FM1236

BITS

BYTE

7

MSB

654321

0

LSB

(5)

A

Address byte 1 1 0 0 0 MA1 MA0 1 A
Status byte POR

(1)

FL

(2)

(3)

I2

(3)

I1

(3)

I0

A2

(4)

A1

(4)

A0

(4)

A

Notes

1. POR = Power On Reset. POR is internally set to 1 in case V

drops below 3 V. The POR bit is reset when an end of

S

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
reference frequency (either 7.8125 kHz, 3.90625 kHz or 6.25 kHz) 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 the internal I/O port P6 (see Table “Digital AFC status”).

5. A = Acknowledge.

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.

1997 Feb 03 15

Philips Components Preliminary specification

Desktop video & FM radio module
system M, N

handbook, halfpage

R1

R2

PLL IC

V

CC

R3

100 Ω

R4

100 Ω

R5

100 Ω

C1
56 pF

C2
22 pF

C3
22 pF

15

AS

14

SDA

13

SCL

CCA507

FM1236

Video buffer

A video buffer is built into the video module to enable the
unit to drive a 75 Ω load directly.

2

C-bus load

I

The FM1236 contains a series resistor (R = 100 Ω) in the
SCL and SDA lines. Both lines also have a capacitive load
of typical 22 pF (see Fig.3).

Fig.3 I

2

C-bus load.

1997 Feb 03 16

Philips Components Preliminary specification

Desktop video & FM radio module
system M, N

MECHANICAL DATA

handbook, full pagewidth

(1)

78.4

2.5
2

5.1

7.9

0.5

FM1236

8.1

±0.3

(1)

∅ 8.35

STANDARD PHONO CONNECTOR

17.5

(2)

∅ 12.3

±0.3

14.74

TH 1

TH4

1110912131415

0.64 × 0.64

Dimensions in mm.
(1) Standard phono socket female 75 Ω.
(2) Alternative IEC connection.

59.2

89.2

2120 22

4.445

23 24

TH2

TH3

25

13.5 max

F CONNECTOR

2.6

10.85

CCA508

34.734.7

29.2

Fig.4 Mechanical outline FM-versions.

1997 Feb 03 17

Philips Components Preliminary specification

Desktop video & FM radio module
system 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’’

235 ±5 °C for 2 ±5 s), results in a wetted area of 95%.
No de-wetting will occur when soldered at
260 ±5 ° C for 5 ±0.5 s.

Resistance to soldering heat

The product will not be damaged when tested in
accordance with
(solder bath 260 ±5 °C for 5 ±1 s).

, test Ta, method 1 (solder bath

‘‘IEC 68-2-20’’

, test Tb, method 1A

FM1236

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 20 N in axial direction

• Test Ua2, thrust of 4 N in axial direction

• Test Ua2, thrust of 2 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).

:

handbook, full pagewidth

Dimensions in mm.

unit

contour

4.6

3.5

2

∅ 2.1 ∅ 1.1

14.7

4.445

59.2

78.4

CCA509

0.9
0

2.6

+0.1

34.7

Fig.5 Punching pattern seen from solder side.

1997 Feb 03 18

Philips Components Preliminary specification

Desktop video & FM radio module

FM1236

system M, N

DEFINITIONS

Data sheet status

Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This 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

1997 Feb 03 19

Philips Components – a worldwide company

Argentina: Ierod, BUENOS AIRES,

Tel. [phone], Fax. [phone].

Australia: Philips Components Pty Ltd, NORTH RYDE,

Tel. [phone], Fax. [phone].

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Tel. [phone], Fax. [phone].

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METRO MANILA, Tel. [phone], Fax. [phone].

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• Philips Components, JUPITER, FL,
Tel. [phone], Fax. [phone].

• For literature: [phone].

• Display and Wire Wound Components, ANN ARBOR, MI,
Tel. [phone], Fax. [phone].

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Tel. [phone], Fax. [phone].

For all other countries apply to: Philips Components,
Marketing Communications, P.O. Box 218, 5600 MD EINDHOVEN,
The Netherlands, Fax. [phone].

COD09 © Philips Electronics N.V. 1997

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