MB1508 Fujitsu Microelectronics, Inc., MB1508 Datasheet
MB1508
Related parts for MB1508
MB1508 Summary of contents
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... FREQUENCY SYNTHESIZER ON CHIP 2.5 GHz PRESCALER DESCRIPTION The Fujitsu MB1508 with an on chip 2.5 GHz dual modulus prescaler is a serial input PLL (Phase Locked Loop) frequency synthesizer with pulse swallow function well suited for BS tuner, CATV system, and TV tuner applications. It operates with a supply voltage of 5.0V typ. and dissipates 16mA typ. of current realized through the use of Fujitsu’ ...
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... MB1508 2 MB1508 Block Diagram ...
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... Please connect to GND through a capacitor. in pin outputs either of the programmable reference divider output frequency f depending upon the FC pin input level Pin f output signal out MB1508 Please see page pin. OUT or programmable divider r and f exists, this pin ...
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... MB1508 FUNCTIONAL DESCRIPTIONS DIVIDE RATIO SETTING Divide ratio can be set using the following equation [(P x N)+ ( vco osc f : Output frequency of external voltage controlled oscillator (VCO) vco P: Preset divide ratio of an internal dual modulus prescaler (256 or 512) N: Preset divide ratio of binary 12-bit programmable counter (32 to 4095) ...
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... When divide ratio of prescaler setting bit is high, divide ratio of 256/272 is selected. When divide ratio of prescaler setting bit is low, divide ratio of 512/528 is selected. Band Switch Setting (BC1 to BC4) When band switch setting bit is high, output is ON. When band switch setting bit is low, output is OFF. MB1508 5 ...
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... MB1508 S18 = Data MSB (SW Clock Bits enclosed in parentheses are used when the divide ratio of the programmable reference divider is selected. Note: One bit of data is shifted into the shift register on the rising edge of the clock. NOTES: On rising edge of the clock shifts one bit of data into the shift register. ...
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... Always turn the power supply off before inserting or removing the device from its socket. Protect leads with a conductive sheet when handling or transporting PC boards with devices < p Symbol Symbol Min V 4 GND I T – < < p Value Typ Max 5.0 5.5 — — +85 MB1508 Unit Unit ...
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... MB1508 ELECTRICAL CHARACTERISTICS Parameter Power Supply Current f in Operating Frequency Operating Frequency OSC Input Sensitivity Input Sensitivity OSC IN High-level Input Voltage Except f Except f and OSC Low-level Input Voltage High-level Input Current Data Clock Clock LE Low-level Input Current Low-level Input Current ...
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... TEST CIRCUIT Prescaler Input Sensitivity P G · 50 1000 p 0.1 1000 MB1508 0.1 MB1508 ...
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... MB1508 MB1508 APPLICATION CIRCUIT 10 ...
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... REF 1991 FUJITSU LIMITED F20003S-5C 20–Lead Plastic Flat Package (Case No.: FPT–20P–M01) +0.25 ) –0.20 .307 .016 (7.80 0.40) .209 .012 (5.30 0.30) .005(0.13) M “A” MB1508 .089(2.25) MAX (MOUNTING HEIGHT) .002(0.05) MIN (STAND OFF HEIGHT) +.016 +0.40 .268 (6.80 ) –.008 –0.20 .020 .008 (0.50 0.20) +.002 +0 ...
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... MB1508 All Rights Reserved. Circuit diagrams utilizing Fujitsu products are included as a means of illustrating typical semiconductor applications. Complete Information sufficient for construction purposes is not necessarily given. The information contained in this document has been carefully checked and is believed to be reliable. However, Fujitsu assumes no responsibility for inaccuracies. ...
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... FUJITSU MIKROELEKTRONIK GmbH Arabella Centre 9.OG Lyoner Strasse 44-48 D-6000 Frankfurt 71 F.R. Germany Tel: (069) 66320 Telex: 411963 FAX: (069) 6632122 Asia FUJITSU MICROELECTRONICS ASIA PTE LIMITED 51 Bras Basah Road Plaza by the Park #06-04/07 Singapore 0718 Tel: 336-1600 Telex: 55373 FAX: 336-1609 1991 FUJITSU LIMITED MB1508 IC-07229-2-91-DS 13 ...