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SP5659KGMP1T Datasheet(PDF) 1 Page - Mitel Networks Corporation |
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SP5659KGMP1T Datasheet(HTML) 1 Page - Mitel Networks Corporation |
1 / 12 page The SP5659 is a single chip frequency synthesiser designed for tuning systems up to 2·7GHz. The RF preamplifier drives a divide-by two prescaler which can be disabled for applications up to 2GHz, allowing direct interfacing with the programmable divider, resulting in a step size equal to the comparison frequency. For applications up to 2·7GHz the divide-by two is enabled to give a step size of twice the comparison frequency. The comparison frequency is obtained either from an on- chip crystal controlled oscillator or from an external source. The oscillator frequency FREF or the comparison frequency FCOMP may be switched to the REF/COMP output; this feature is ideally suited to providing the reference frequency for a second synthesiser such as in a double conversion tuner (see Fig. 5). The synthesiser is controlled via an I2C bus and responds to one of four programmable addresses which are selected by applying a specific voltage to the Address input. This feature enables two or more synthesisers to be used in a system. The SP5659 contains four switching ports, P0-P3 and a 5-level ADC, the output of which can be read via the I2C bus. The SP5659 also contains a varactor line disable and charge pump disable facility. FEATURES s Complete 2·7GHz Single Chip System s Optimised for Low Phase Noise s Selectable 42 prescaler s Selectable Reference Division Ratio s Selectable Reference/Comparison Frequency Output s Selectable Charge Pump Current s Varactor Drive Amplifier Disable s 5-Level ADC s Variable I2C BUS Address for Multi-tuner Applications SP5659 2·7GHz I2C Bus Low Phase Noise Synthesiser Preliminary Information Supersedes March 1996 version, DS4206-1.8 DS4296 - 2.0 June 1998 SP5659 1 2 3 4 5 6 7 8 MP16 16 15 14 13 12 11 10 9 CHARGE PUMP CRYSTAL REF/COMP ADDRESS SDA SCL PORT P3 PORT P2 DRIVE VEE RF INPUT RF INPUT VCC ADC PORT P0 PORT P1 Fig. 1 Pin connections – top view s ESD Protection: 4kV, Mil-Std-883C, Method 3015 (1) s Pin Compatible with SP5658 (1) Normal ESD handling precautions should be observed. APPLICATIONS s Satellite TV s High IF Cable Tuning Systems THERMAL DATA uJC = 41°C/W uJA = 111°C/W ORDERING INFORMATION SP5659 KG/MP1S (Tubes) SP5659 KG/MP1T (Tape and reel) |
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