sp5669 Mitel, sp5669 Datasheet
sp5669
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sp5669 Summary of contents
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... Applications Complete 2.7GHz single chip system Optimised for low phase noise Description The SP5669 is a single chip frequency synthesiser designed for tuning systems up to 2.7GHz and offers step size compatible with DTT offset requirements. The RF preamplifier drives a divide by two prescaler which can be disabled for applications up to 2GHz, ...
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... SP5669 PROGRAMMABLE DIVIDER 13 PRE RF 2/1 AMP INPUTS BIT LATCH 4 ADDRESS 5 SDA 6 TRANSCEIVER SCL POR POWER ON DETECT 11 ADC 3 BIT ADC 2 CHARGE PUMP DRIVE CRYSTAL 2 15 Vee REF/COMP INPUT ADDRESS INPUT SDA 5 12 Vcc SCL 6 11 ADC PORT PORT P0 ...
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... See Fig pin = 2V V pin1 = 2V mAV pin16 = 0.7V MHzAC coupled sinewave mV p–pAC coupled sinewave Applies to 4MHz crystal only. ‘Parallel resonant’ crystal. Figure quoted is under all conditions including start up. Includes temperature and process tolerances. AC coupled output. Output enabled,RE=1. See Note 1. SP5669 3 ...
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... SP5669 Electrical Chacteristics (cont.) T amb = – 4. 5.5V. Reference frequency = 4MHz. These characteristics are guaranteed CC by either production test or design. They apply within the specified ambient temperature and supply voltage ranges unless otherwise stated. Characteristics Comparison frequency Equivalent phase noise at ...
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... Functional Description The SP5669 contains all the elements necessary, with the exception of a frequency reference, loop filter and external high voltage transistor, to control a varicap 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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... SP5669 To facilitate smooth fine tuning, the frequency data bytes are only accepted by the device after all 17 bits of frequency data have been received, or after the generation of a STOP condition. Repeatedly sending bytes 2 and 3 only will not change the frequency. A frequency change occurs when one of the following data sequences is sent to an addressed device ...
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... R0 A P2/TS2 P1/TS1 P0/TS0 A LSB MA1 MA0 Voltage on ADC input 0 0 0.6V toV 0.45V to 0. 0.3V to 0.45V 0.15V to 0. 0.15V Table 4 ADC levels SP5669 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 1 Byte ...
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... SP5669 RE RTS TS2 TS1 X=don’t care C1 byte 5, bit 300 VIN (mV RMS INTO 50 ) OPERATING 100 WINDOW 100 1000 FREQUENCY (MHz) Figure. 7a Typical input sensitivity ...
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... Media Data Book, or refer to the Mitel Semicondor Internet Site http://www.gpsemi.com. The wide range of reference division ratios allows the SP5669 to be used both for the up converter LO with a high phase comparator frequency (hence low phase noise) and the down converter which utilises the device in a lower comparison frequency mode (which offers a fine step size) ...
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... C8 C9 C7/C8/C9 = 100nF C7 R7 22K R8 R9 VAR 16K 47K C12 GND 2n2F T1 2N3904 RF INPUT C5 SKT1 1nF C10 1nF NOTE : The circuit diagram shown is designed for use with a number of synthesisers. . The LED connected to pin 11 is redundant when a SP5659 is used in this board. SP5669 ...
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... Loop Bandwidth The majority of applications for which the SP5669 is intended require a loop filter bandwidth of between 2kHz and10kHz. Typically the VCO phase noise will be specified at both 1kHz and10kHz offset common practice to arrange the loop filter bandwidth such that the 1kHz figure lies within the loop bandwidth ...
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... SP5669 4MHz 18pF Fig. 12 Driving two devices from a common reference NORMALISED 1nF +j1 +j0.5 +j0.2 0 0.2 0 –j0.2 –j0.5 X –j1 Figure. 13 typical RF input impedance ...
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... SDA ONLY SDA and SCL and ADC V CC CRYSTAL Reference oscillator Figure. 14 Input/Output interface circuits V CC 200 100 OS (Output disable) Loop amplifier PORT Output Ports V CC 30k ADDRESS 3k enable/ disable 10K Address input REF/COMP output SP5669 CHARGE PUMP DRIVE OUTPUT V CC REF/COMP 13 ...
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... Mitel. This publication is issued to provide information only and (unless agreed by Mitel in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. The products, their specifications, services and other information appearing in this publication are subject to change by Mitel without notice. No warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. Information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specifi ...