Model # LCFS1088 (LCFS1088-DEMO) 2200 to 4400 MHz Frequency Synthesizer Low Phase Noise in a Lower Cost Package Features • Low Phase Noise: -98 dBc/Hz (100 kHz offset) • Internal Reference Oscillator • No User Programming Required • Integrated Microcontroller Look-up Table • Customized Parallel or Serial Programming Available • EAR99, RoHS Compliant • Multiple Outputs Available API Technologies’ Model LCFS1088 frequency synthesizer combines a monolithic integer-n microwave synthesizer, a reference oscillator and a microcontroller to provide an economical frequency source solution. Complex serial register programming is not required. A built-in lookup table in the microcontroller allows for simplified frequency programming with a dual 8-bit binary frequency selection word. The synthesizer is RoHS compliant, however a lead based solder is used during the construction of the DEMO board (if the DEMO Board is requested). Technical Specifications Parameter Maximum (No Damage) Ratings Typical Min/Max 2200 to 4400 MHz 2200 to 4400 MHz Output Power (F0) Pin 15 +13 dBm - Output Power (F0) Pin19 +13 dBm - Internal Input Reference Frequency 40 MHz - Step Size 10 MHz - -90 dBc/Hz @ 1 kHz -95 dBc/Hz @ 10 kHz -98 dBc/Hz @ 100 kHz -127 dBc/Hz @ 1 MHz -145 dBc/Hz @ 10 MHz - 3.3 volt logic - Locking Speed 80 µsec - Spurious -40 dBc - Harmonics -20 dBc - 1.75:1 2.0:1 +3.3 volts (+/- 2%) volts DC Supply Current** 250 mA --- Frequency Accuracy ± 2 PPM --- Frequency Aging ± 1 PPM --- Frequency vs. Temperature ± 2 PPM --- Frequency Range SSB Phase Noise Digital Lock Indicator Output VSWR DC Supply Voltage Storage Temperature -55°C to +125°C Operating Temperature -40°C to +85°C DC Voltage +5 volts Note: Typical values are measured at 25°C, but not guaranteed. Note: Wake Up frequency: 2400 MHz. Mechanical & Electrical Parameter Specification Specification Temperatures (Min/Max) -20°C to +70°C Housing Size 0.800” L x 0.800” W x 0.130” H Housing Drawing LC800 Package Type Surface Mount Rev Date: 5/19/2015 © API Technologies Corp. Proprietary Information Page # 1 | www.apitech.com | micro.apitech.com | +1.888.553.7531 | [email protected] Model # LCFS1088 Typical Performance Phase Noise (dBc/Hz) 15 0 Output Power (dBm) 14 -20 13 -40 12 -60 (dBm) (dBc/Hz @ 4400 MHz) (LCFS1088-DEMO) -80 -100 11 10 9 8 -120 7 -140 6 -160 1000 1 kHz 5 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 10000 10 kHz 100000 100 kHz 1000000 1 MHz 10000000 10 MHz Offset from the Carrier Frequency (MHz) Notes 1. Specifications labeled “min.” or “max.” are guaranteed in a 50 Ohm system over the specified temperature range. 2. Output frequency and step size must be specified. 3. Other input voltages are available. 4. Pin RF1A is the Fundamental Output 5. Pin RF2A is the Second Fundamental Output Rev Date: 5/19/2015 © API Technologies Corp. Proprietary Information Page # 2 | www.apitech.com | micro.apitech.com | +1.888.553.7531 | [email protected] Model # LCFS1088 (LCFS1088-DEMO) Outline Drawing (LC800 Package) Rev Date: 5/19/2015 © API Technologies Corp. Proprietary Information Page # 3 | www.apitech.com | micro.apitech.com | +1.888.553.7531 | [email protected] Model # LCFS1088 (LCFS1088-DEMO) Application Notes The Demo Board will be supplied with a similar spreadsheet along with some “Visual Basic Code” that transfers the frequency entered in the yellow cell to the USB and parallel converter located on the Demo Board. Pinout Description Pin 1 and 52 Pins 2,3 and 40 Pin 4 Pins 5 and 6 Pin 8-11 Pin 12 Pin 13 Pin 14 Pin 15 Pin 16 Pin 17 Pin 18 Pin 19 Pin 20 Latch 1 and Latch 2 Normally tied together. A rising edge on these pins latches the low control byte. A falling edge latches the High control byte. No connection. Leave these pins open. (used for factory programming) DC ground +3.3 V dc power input DC ground RF ground RF ground RF ground RF2A Auxiliary output A, Second Fundamental Output RF ground RF1B Normally disabled unless complimentary fundamental output is desired RF ground RF1A Fundamental RF output RF ground Pins 21-34 Pin 35 Pin 36 Pin 37 Pin 38 Pin 39 Pin 40 Pin 41 Pin 42 Pin 43 Pin 44 Pin 45 Pin 46-48 Pin 49 Pin 50 Pin 51 DC ground Lock detect output (High when locked/ low unlocked) internal 240 ohm series resistor can directly drive a lock LED to ground (5 mA source current). DC ground RF disable normally open. Ground this pin to blank the RF output. Reference oscillator in/out (one or the other depending on model option) output 1k impedance. Input 50 ohms (1 dBm nominal) Signal ground for Reference No connection. Leave this pins open. (used for factory programming) Data 0 LSB of the upper or lower 8 bit control word Data 1 Data 2 Data 3 Data 4 Data ground Data 5 Data 6 Data 7 MSB of the upper or lower 8 bit control word Note: Ground unused RF outputs. Rev Date: 5/19/2015 © API Technologies Corp. Proprietary Information Page # 4 | www.apitech.com | micro.apitech.com | +1.888.553.7531 | [email protected] Model # LCFS1088 (LCFS1088-DEMO) The LCFS synthesizer is controlled by a 16 bit binary (2^16=65536) frequency control word. Interface logic is LV (3.3 V cmos). The control word addresses a custom lookup table in the built-in microcontroller for the desired output frequency. As an example a control word of all zeroes would address the first (lowest ) frequency . The next location would address the next higher frequency (lowest frequency + 1 frequency step). The frequency control word is split into (2) 8 bit words along with a latch signal that differentiates between the low 8 bits and the high 8 bits. This control structure allows the synthesizer to be controlled by an 8 bit parallel port plus an additional latch control line (9 bits). Programming Example: This spreadsheet calculates the control word and Low and High 8 bits from the desired output frequency. 275 to 550 MHz with a 5 MHz step size. F out Control word=(Fout-275)/5 Leading zeroes suppressed Desired frequency: 300 MHz ……………………………….. Control word= 5 (Base10) …………..……………………………………………………Binary Low 8 bits = the remainder of control word /256 ………… Low 8 Bits= 5 (Base 10) .............................................................……...............…………………….101 High 8 bits =int(control word/256) ………………………… High 8 Bits = 0 (Base 10) ……………………..………………………….……………………0 If the synthesizer is programmed with a control word that is beyond the highest step, the highest frequency will be the output. The additional bit is the latching signal. The rising edge latches the Low 8 Bits and the falling edge latches the High 8 Bits. Rev Date: 5/19/2015 © API Technologies Corp. Proprietary Information Page # 5 | www.apitech.com | micro.apitech.com | +1.888.553.7531 | [email protected] LCFS Demo Board Driver Installation 1) Plug the USB cable to the Windows based (7 or newer) computer. The demo board and synthesizer will be powered by the USB port. Allow Windows time to find the driver through an automatic search. A good driver installation is indicated by a flashing yellow light. 2) Go to the Windows Control Panel, find the icon “hardware and sound, devices and printers”. There should be an icon for a USB serial port. Double click on the icon, and select the “Hardware” tab of the properties window. 3) Click on the properties button. On the “General” tab click on the change settings button. Click on the “Port Settings A” tab, and then click on the advanced button. 4) In the “Advanced Settings” window, click on the “com port” button and select a high numbered “com port” that is not in use such as 11 or 12. 5) Click on the OK button 3X to close all the windows. 6) You should now have a USB com port in your hardware window with the new com number. You will use this com number in the control spreadsheet to address a particular demo board. If you install multiple demo boards be sure to give them different com numbers.