SP5659 Mitel, SP5659 Datasheet
SP5659
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SP5659 Summary of contents
Page 1
... Supersedes March 1996 version, DS4206-1.8 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· ...
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... SP5659 ELECTRICAL CHARACTERISTICS T = 220 C to 180 14·5V to 15·5V, reference frequency = 4MHz. AMB CC These Characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature and supply voltage ranges unless otherwise stated. Characteristic Supply current input voltage RF input impedance ...
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ABSOLUTE MAXIMUM RATINGS All voltages are referred Parameter Supply voltage RF input voltage RF input DC offset Port voltage Total port current ADC input DC offset REF/COMP output DC offset Charge pump DC offset Drive ...
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... SP5659 FUNCTIONAL DESCRIPTION The SP5659 contains all the elements necessary – with the exception of a frequency reference, loop filter and external high voltage transistor – to control a varactor tuned local oscillator, so forming a complete PLL frequency synthesised source. The device allows for operation with a high comparison frequency and is fabricated in high speed logic which enables the generation of a loop with good phase noise performance ...
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The POR is reset to 0 when the read sequence is terminated by a STOP command. When POR is set high (at low V programmed information is lost and the output ports are all set to high impedance. Bit 2 ...
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... SP5659 RE RTS TS2 TS1 TS0 Table 6 REF/COMP output mode and test modes C1 byte 5, bit 300 100 OPERATING WINDOW 40 10 100 1000 2000 FREQUENCY (MHz) Fig. 4a Prescaler disabled REF/COMP O/P mode Test mode description Disabled to high state Disabled to high state Charge pump sink, status byte ...
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... DOUBLE CONVERSION TUNER SYSTEMS The high 2·7GHz maximum operating frequency and excellent noise characteristics of the SP5659 allow the construction of double conversion high IF tuners. A typical as shown in Fig. 5 uses the SP5659 as the first local oscillator control for full band up conversion greater 50-900MHz 1650-2700MHz FIRST LO Fig ...
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... P1 DISABLE/REF ENABLE DATA/SDA CLOCK/SCL C13 100p NOTES 1. The circuit diagram shown is designed for use with a number of synthesisers. 2. The LED connected to pin 11 is redundant when an SP5659 is used in this board use an external reference, capacitor C6 must be fitted and capacitor C1 removed from the board. 8 EXTERNAL ...
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... LOOP BANDWIDTH Most applications for which the SP5659 is intended require a loop filter bandwidth of between 2kHz and 10kHz. Typically, the VCO phase noise will be specified at both 1kHz and 10kHz offset common practice to arrange the loop filter bandwidth such that the 1kHz figure lies within the loop bandwidth ...
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... SP5659 V REF 500 500 13 RF INPUT 14 RF INPUT RF inputs 3k SCL/SDA/ADC * ACK * ON SDA ONLY SDA, SCL and ADC CRYSTAL Reference oscillator 10 OS (O/P DISABLE 30k 4 ADDRESS 10k PORT Output ports Fig. 11 Input/output interface circuits CHARGE PUMP 200 100 16 DRIVE OUTPUT Loop amplifier ...
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... SP5659 PACKAGE DETAILS Dimensions are shown thus: mm (in). 9·80/10·01 (0·386/0·394) 16 SPOT REF. CHAMFER REF. PIN 1 0·35/0·49 (0·014/0·019) 0·69 (0·027) MAX 16 LEADS AT 1·27 (0·050) NOM SPACING CUSTOMER SERVICE CENTRES FRANCE & BENELUX Les Ulis Cedex Tel: ( Fax: ( ...