User`s Manual Frequency Synthesizer
Contents
1. Power Supply Pin Feedthrough capacior Supply 6V 4 L F Connector 2 54mm 5x2 10 pin Connector for flat Cable Part No HIROSE HIF3FC 10PA 2 54DSA Pin Assignment Pin No Name Description 1 GND Signal GND 2 GND Signal GND 3 NC None 4 INT EXT Mode selection pin external or internal Ref clock High Internal Low External Internally pulled up 5 LOCK PLL lock status output High lock Low unlock 3 3V CMOS 6 CS Chip select under SPI mode Input low active 3 3V CMOS Internally pulled up 7 RXD Asynchronous serial RX data 3 3V CMOS Internally pulled up 8 SDI Serial data input under SPI mode 3 3V CMOS 9 TXD Asynchronous serial TX data 3 3V CMOS 10 CLK Serial input under SPI mode 3 3V CMOS Digital Signal Technology 7 Thermal Consideration Mount this module on chassis firmly in order to flow heat as power dissipation of this module is about 3 watts Or installing heat sink of heat resistance less than 6 5 degree C W is recommended Refer to Page 3 Outer dimensions about mounting holes It will be more effective if silicon compound is put on the surface of the mounting section of the module 8 Control by SPI serial data 1 SPI specification Max clock speed 500KHz Data bits width 24bits 22bits frequency data bits 2bits reserved Logic level 3 3V CMOS 2 Timing characteristic ti CS NEN RE um t3 e J t4 SDI m D22 i m ma Van m Ik D2 V D1 V DO Timing characteristic Parameter Condition Min Unit ti CLK setup2. time to CS 50 ns t2 CLK period 2 us t3 SDI setup time to CLK rise edge 100 ns i4 SDI hold time to CLK rise edge 100 ns t5 CS setup time to CLK rise edge 50 ns 3 Command definitions 24 bits frequency data is transferred by serial data Actual frequency data bits are 22 bits among 24 bits the remaining 2 bits are not used Bit definition is as follows Bits Name Width Description bit 23 22 Reserved 2 bits Not used do not care bit 21 0 Frequency 22 bits Frequency data in 10KHz resolution in binary For example if you set 18GHz the frequency data of 10KHz unit must be converted to binary data 18GHz is converted to 1B7740 hex in 22 bits binary data 8 Digital Signal Technology Please note that even if the frequency of beyond 1GHz to 18GHz was set the quality of the signal would not be guaranteed 9 Control by Asynchronous serial data How to set from a PC serial port RS 232C is explained below 9 1 Communication specification Speed 9600bps Data bits 8 bits Stop bits 1 bit Parity None Flow control None Logic level 3 3V CMOS level 9 2 RS 232C connection The logic level of DPL 18GF serial communication is 3 3V CMOS which cannot be directly connected to RS 232C level like PC serial port Level converter LVC 232C between RS 232C and 3 3V CMOS is needed LVC 232C is available from our products line up Refer to our Web site http www dst co jp en manuals lvc232c pdf 9 3 Com
3. User s Manual Freguency Synthesizer DPL 18GF Digital Signal Technology Inc 1 7 30 Higashi Benzai Asaka Saitama 351 0022 Japan TEL 81 48 468 6094 FAX 81 48 468 6210 URL http www dst co jp en Email info00dst co jp 1 Digital Signal Technology Contents 1 General Description nn 3 2 Specification 0000000000 3 3 Phase Noise essseee 4 4 Outer Dimensions eseseeseee 5 6 5 Circuit Configuration 25252 7 6 Connector Interface 2 7 7 Thermal Consideration 000000 nn 9 8 Control by SPI aa 9 9 Control by Asynchronous Serial Data 10 10 Shipping Inspection ooo 11 11 Warranty aaa 11 12 ES s Bio eon 11 2 Digital Signal Technology 1 General Description DPL 18GF GFH is a freguency synthesizer which can generate any freguency from 1GHz to 18GHz in 10KHz step It can be used as a clock source or local oscillator for communication and test measurement eguipment because of its excellent phase noise and compact size The freguency is set not only with asynchronous serial data but by SPI serial data Once the freguency is successfully set it is automatically memorized into EEPROM So the next time it is powered the last entered frequency is retrieved 2 Electrical Specification Power Supply Current Frequency Range Frequency Resolution Output level Output Impedance Spurious Harmonics Phase Noise 10GHz typical Inter
4. ation in 2 1 Warrantv If anv defect is found due to the manufacturer s improper production or design within one vear after deliverv repair or replacement shall be performed under the manufacturer s responsibility DS Technology Inc assumes no liability for damages that may occur as a result of handling by users even though the warranty period 12 Others 11 1 This product which employs a CMOS device may be easily damaged by static electricity DS Technology Inc assumes no liability for damages that may occur as the result of handling by users even though the above warranty period 11 2 Do not supply over voltage power supply module may be damaged DS Technology Inc assumes no liability for damages that may occur as the result of handling by users even though the above warranty period Descriptions of this manual are subject to change without notice No portion of this manual can be reproduced without the permission of Digital Signal Technology Digital Signal Technology assumed no liability for damages that may occur as a result of handling by users The contents of this manual do not apply to the warranty in executing an industrial property or other rights nor permission for the right of execution Digital Signal Technology assumes no responsibility for the third party s industrial property occurred from using the circuits described in this manual 10 Digital Signal Technology
5. mand definitions Character strings marked as double guotation marks means ASCII code and CR and LF which are control codes means OD hex and OA hex If any invalid command is entered INVALID DATA CR LR is returned All characters used for input should be uppercase If a normal command is entered is returned Also the entered data is echoed back 9 3 1 Freguency setting command For freguency setting input can be made in GHz MHz and KHz unit 1 Setting in GHz For setting 18GHz input the following data 18G CR In this case all the data below 100MHz is set to 0 2 Setting in MHz For setting 2400MHZz input the following data 2400M CR In this case all the data below 100KHz is set to 0 3 Setting in KHz For setting 2400020KHz input the following data 2400020K CR Or 240002 CR Please note that even if the frequency of beyond 1GHz to 18GHz was set the qualitv of the signal would not be guaranteed 9 3 2 READ command By entering READ GR the currently set frequency is output The response is as shown below ffffffffKHZz CR LF fffffff is the frequency of correctly outputting in KHz unit 9 Digital Signal Technology 9 3 3 SAVE command By entering SAVE CR the current frequency can be memorized into EEPROM When it is powered next time the stored data can be output 10 Shipping inspection 1 100 inspection shall be performed for the electrical specific
6. nal Ref Clock Accuracy External Ref Clock and Level Lock Time Operating temperature Range Outer Dimensions Interface 6V 5 2A 1GHz 18GHz 10kHz step gt 10dBm 50 ohm lt 60dBc lt 8dBc 72dBc Hz 100Hz 93dBc Hz 1kHz 97dBc Hz 10kHz 94dBc Hz 2100kHz 113dBc Hz 1MHz lt t 2ppm 0 50 degree C 10MHz 6dBm 6dBm max 10msec 0 50 degree C In case of being installed with thermal resistance 6 5 degree C W heat sink 60mmx70mmx17 5mm 60mm X 70mm X77 5mm with Heat Sink 1 Asynchronous Serial Communication 9600bps 8 bits 1 stop bit non parity 3 3V CMOS level 2 SPI serial communication 3 3V CMOS level 3 Digital Signal Technology Phase Noise dBc Hz 3 Phase Noise 100 120 140 160 10 100 1K 10K 100K 1M 10M Offset Frequency Hz 4 Digital Signal Technology 4 Outer Dimensions 1 DPL 18GF 8 OH U noJu G Z p ajo SU1JUNOW INO dd o u1dol J0198UU0 89E118JU in mm NI 338 uup uqdeq 9 Zill b 9 0H 3ui3unoy 101 9ede UANOJUJPB84 Digital Signal Technologv 2 DPL 18GFH OL Digital Signal Technology 5 Circuit Configuration 3 6GHz 6 Connector Interface PLL 9 18GHz DIVIDER DIVER VALUE 1 27N N 0 1 2 3 4 UNLOCK A D OUT 1 18GHz BUFF O 10dBm 1 External 10MHz input SMA J 50 ohm 2 Output Connector SMA J 50 ohm 3
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