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Details, datasheet, quote on part number:FI1236
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Datasheet text preview:
BU TUNERS
DATA SHEET
FI1236MK2 Desktop video tuner system RTMA M/N
Preliminary specification File under BU Tuners, DC03 1996 Mar 19
Philips Components
Preliminary 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 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 I2C-bus. All front-ends meet the 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 I2C-bus. ORDERING INFORMATION TYPE FI1236MK2/HM/PH FI1236MK2/HM/F MARKING
FI1236MK2
CONNECTOR
CATALOGUE NUMBERS
standard phono 3139 147 13251 F 3139 147 13261
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. INTERMEDIATE FREQUENCIES FREQUENCY(1) (MHz) NTSC M/N Picture carrier Colour Sound Note 1. The oscillator frequency is above the input signal frequency. CHANNEL COVERAGE BAND Low band Mid band High band CHANNELS 55.25 to 160.00 MHz 160.00 to 454.00 MHz 454.00 to 801.25 MHz 45.75 42.17 41.25
SYSTEM
1996 Mar 19
2
handbook, full pagewidth
1996 Mar 19
MIXER - OSCILLATOR IC
BLOCK DIAGRAM
Philips Components
HIGH BAND
n - 1 TRAP
Desktop video tuner system RTMA M/N
VCO
HIGH OSC. BAND IF VIF PLL DEMODULATOR
MID BAND MID OSC. BAND
LOW OSC. BAND
LOW BAND
3
FILTER TRAP PLL +ADC
AGC
DC - DC
11
12
13
14
15
22
23
24 25
CCA020
VT
VS SCL SDA AS (+5 V)
2nd IF sound output
CVBS VIF AF (+5 V) sound output
Preliminary specification
FI1236MK2
Fig.1 Electrical block diagram.
Philips Components
Preliminary specification
Desktop video tuner system RTMA M/N
PINNING SYMBOL VT VS SCL SDA AS n.c. 2nd IF CVBS VIF AF sound output - sound output PIN 11 12 13 14 15 21 22 23 24 25 TH1, TH2, TH3 and TH4 tuning voltage (monitor) supply voltage tuner section +5 V I2C-bus serial clock I2C-bus serial data I2C-bus address select not connected second IF sound output Composite Video Baseband Signal output supply voltage IF section +5 V AF sound output mounting tags (ground) DESCRIPTION
FI1236MK2
1996 Mar 19
4
Philips Components
Preliminary specification
Desktop video tuner system RTMA M/N
LIMITING VALUES Limiting values under operational conditions The tuner can be guaranteed to function properly under the following conditions. SYMBOL VS VS(ripple) supply voltage peak-to-peak ripple voltage susceptibility (at 5 V ±5%); note 1 20 Hz to 100 kHz >100 kHz to 500 kHz IS VSCL VSDA ISDA VAS ZIF supply current SCL bus input voltage SDA bus input voltage SDA bus current (open collector) address select voltage; note 2 2nd IF sound output load impedance: DC AC ZCVBS Composite Video Baseband Signal load impedance: DC AC tL VIF VIF(ripple) load time constant IF supply voltage peak-to-peak ripple voltage susceptibility (at 5 V ±5%); note 1 20 Hz to 100 kHz >100 kHz to 500 kHz IIF ZAF IF supply current AF sound output load impedance: DC AC Notes 25 1.0 0.6 - - 23 - - - 4.75 75 75 - 5.0 22 0.5 0.5 - - 13 14 15 PARAMETER PIN MIN. 4.75 TYP. 5.00
FI1236MK2
MAX. 5.25
UNIT V
12
- - - -0.3 -0.3 -1 -
- - - - - - -
20 10 120 +5.25 +5.25 +5 +5.25 - -
mV mV mA V V mA V k k
- - 100 5.25
ns V
24
- - -
- - -
20 10 100 - -
mV mV mA k k
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".
1996 Mar 19
5
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