Synthesizer Part LCFS1063 Datasheet

Model # LCFS1063
LCFS1063-DEMO
3 GHz to 6 GHz Frequency Synthesizer
Low Phase Noise in a Lower Cost Package
Features
• Low Phase Noise: -98 dBc/Hz (100 kHz offset)
• Internal Reference Oscillator (External Optional at no Extra Charge)
• No User Programming Required
• Integrated Microcontroller Look-up Table
• Customized Parallel or Serial Programming Available
• 3 Additional Output Lines are Available
• EAR99, RoHS Compliant
• DEMO Board available upon request.
API Technologies’ Model LCFS1063 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. Either parallel or serial programming can be accommodated.
Technical Specifications
Parameter
Maximum (No Damage) Ratings
Typical
Min/Max
3 GHz to 6 GHz
3 GHz to 6 GHz
+13 dBm
-
Internal Input
Reference Frequency
40 MHz
-
Step Size
10 MHz
-
-80 dBc/Hz @ 1 kHz
-80 dBc/Hz @ 10 kHz
-98 dBc/Hz @ 100 kHz
-127 dBc/Hz @ 1 MHz
-150 dBc/Hz @ 10 MHz
-
3.3 volt logic
-
Locking Speed
200 µsec
Spurious
Harmonics
Frequency Range
Output Power
SSB Phase Noise
Digital Lock Indicator
Output VSWR
Optional Binary
Divided Output
Storage Temperature
-55°C to +125°C
Operating Temperature
-40°C to +85°C
DC Voltage
+5 volts
Notes: Typical values are measured at 25°C, but not guaranteed.
Up to 4 Optional Outputs*
• One Output line: 150 mA *
• Two Output Lines: 225 mA
• Three Output Lines: 300 mA
• Four Output Lines: 375 mA
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.
-40 dBc
-
3.
Other input voltages are available.
-20 dBc
-
1.75:1
2.0:1
Mechanical & Electrical
2,4,8,16,32,64,128
Parameter
Specification
DC Supply Voltage
+3.3 volts
(+/- 2%) volts
DC Supply Current *
150 mA
---
Specification
Temperatures (Min/Max)
-40°C to +85°C
Frequency Accuracy
± 2 PPM
---
Housing Size
0.800” L x 0.800” W x 0.130” H
Frequency Aging
± 1 PPM
---
Housing Drawing
LC800
Frequency vs. Temperature
± 2 PPM
---
Package Type
Surface Mount
Rev Date: 5/4/2015
© API Technologies Corp. Proprietary Information
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Model # LCFS1063
Typical Performance
LCFS1063-DEMO
Phase Noise (dBc/Hz)
Output Power (dBm)
0
-20
-60
(dBm)
(dBc/Hz @ 6 GHz)
-40
-80
-100
-120
-140
-160
1000
1 kHz
10000
10
kHz
100000
100 kHz
1000000
1 MHz
Offset from the Carrier
10000000
10 MHz
Frequency (GHz)
Outline Drawing
(LC800 Package)
Rev Date: 5/4/2015
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Model # LCFS1063
LCFS1063-DEMO
Outline Drawing
(LC800 Package)
Rev Date: 5/4/2015
© API Technologies Corp. Proprietary Information
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Model # LCFS1063
(LCFS1063-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.
Control word=(Fout-275)/5
F out
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: 5/4/2015
© API Technologies Corp. Proprietary Information
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[email protected]
Model # LCFS1063
(LCFS1063-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
Pins 21-34
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
Ground
RF Ground
RF2A Auxiliary Output A
RF Ground
Ground
RF ground
RF1 A Fundamental RF Output (Fo)
RF Ground
DC Ground
Pin 35
Pin 36
Pin 37
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.
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
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: 5/4/2015
© API Technologies Corp. Proprietary Information
Page # 5
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micro.apitech.com
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+1.888.553.7531
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[email protected]