MODEL NUMBER:(R) 64020-200-2ADMDFS-A
SPECIFICATIONSDocument Number: 56A18641E
A Digital Frequency Synthesizer OEM Module with Analog and Digital Modulation input and a 2 Watt RF Output.
When specified as R64020-200-2ADMDFS-A, the unit delivered will be manufactured to be compliant with EU
Directive 2002/95/EC for Reduction of Hazardous Substance.

PARAMETERSPECIFICATION

Bandwidth:

20 – 200 MHz typical

Clock Frequency:

1000 MHz

Step Size:< 1 Hz with 30 Bits input

Frequency Settling Time:

250 ns Maximum

Power Out:

2 watts typicalHarmonic Distortion:

nd2 :
3rd:

-20 dBc Maximum-15 dBc Maximum

Analog Modulation:

0 to +1 volt Analog into 50 , +1volt = Full RF power output.

Digital Modulation:

TTL levels
TTL Active High = Full RF output power
TTL Active Low = Minimum RF output power
No Signal = Full RF output power (pulled high internally)

Rise and Fall Time:

20 ns

Extinction Ratio:
Digital:Analog:30 dB Minimum
40 dB Minimum

Reference Out:A reference signal from the un-modulated
output of the synthesizer. +0 dBm nominal

Applied Power:+ 28 volts DC @ 1 amp Maximum+ 3.3 volts DC @ 1 amp Maximum

MAXIMUM RATINGS:
Ambient Temperature:

400 C

RF Output:

No DC Feedback

Supply Voltage:

30 volts DC
3.5 volts DC

INPUT / OUTPUT CONNECTIONS:+28v, +3.3V, and Gnd

Filtered Feedthru

Mod InSMC Male

Reference Out

SMC Male

RF Output

SMA Female"FREQUENCY SELECT" Control

TTL 30 bit binary word, Digital Modulation Input, Reset, and a
Latch control input through the 37 pin D sub connector.
See page 2 for pinout.

Outline Drawing

53D3887
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64020-200-2ADMDFS-A"FREQUENCY SELECT" PIN OUT
37-PIN MALE D-SUB CONNECTORPINPIN

1FS02LSB20FS1FS221

FS33FS422

FS54

FS623

FS75FS824

FS96FS1025

FS117FS1226

FS138FS1427

FS159FS1628

FS1710

FS1829

FS1911

FS2030FS2112

FS2231

FS2313

FS2432

FS2514

FS2633

FS2715

FS2834

FS2916Latch

35

Digital Modulation Input (Active High)

17Master Reset (Active High)

36

N/C

18

N/C

37

N/C

19GroundControl Word K10 MSB

FOUT (Hz) (2 31 )in Decimal notation
FOSC (Hz)2 of 456A18641E

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CONTROL WORD CALCULATIONS
The output frequency and step size is a function of the clock rate and the "FREQUENCY SELECT"
data. The output frequency can be calculated from the formula:(fc ) (k10 )fout 
2nWhere: fc = clock frequency in Hz
k10 = input word in decimal notationn = 31 *See note below.
The minimum output frequency and step size are given by:
fcfmin  n
2An example of setting the frequency:
Clock frequency = 1000 x 106 Hz
Desired output frequency = 30.00 x 106 Hz
K10 

fOUT (Hz) (2 31 )fOSC (Hz)K10 

30 x 10 6 (2 31 )(1000 x 10 6 )K10  64424509.44 DecimalConvert K10 to HEXKHEX = 3D70A3D\/- MSB\/ - LSB

03D70A3D

Convert KHEX to Binary\/

KB = 000011110101110000101000111101/\
These 4 bits are added to complete the 30 bit word

-Setting for front panel "HEX" switches
NOTE: The switches on the front panelof the driver are LSB to MSB - right to left.
LSB - pin1

-Setting for binary word input to backpanel "FREQUENCY SELECT" 37 pin
D-sub connector*Note: This system only uses 30 bits to set the frequency output from the driver. Theaccumulator inside the chip is 31 bit, so use 231 in your calculations for precision.
The LATCH function (pin 16) is a TTL compatible input which is used to load new frequency
information into the driver. Frequency data is loaded into the driver when the signal on theLATCH pin goes from HIGH to LOW (falling edge).
Master RESET is a TTL active HIGH and resets the accumulator to zero, ie, no frequency output,
when a TTL HIGH is applied to pin 17. This is pulled LOW via. a 1 KΩ resistor.

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For More Information, Contact: sales@goochandhousego.com www.goochandhousego.com
As part of our policy of continuous product improvement we reserve the right to change specifications at any time.

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