f-package outline PCF-3F series phase comparators 10 to 500 mhz / high signal isolation / high accuracy / hi-rel flatpack fo r f u rther i nfor m at i on contact m err i m ac / 41 fa irfi e l d p l., w es t ca l d w e ll, nj , 07006 / 973 - 575 - 1300 / fax 973 - 575 - 0531 principal specifications center usable model frequency, bandwidth, number f o, mhz mhz PCF-3F-***b 10 - 500 f o 5% for complete model number replace *** with desired center frequency, f o in mhz. general specifications rf characteristics phase difference range: 0 - 360 vswr (rf/lo): 2.0:1 max. lo input power (ref.): +10 1 dbm rf input power (unknown): +2 dbm max. rise time/fall time: 100 ns typ. impedance (unknown & ref.): 50 w nom. video output characteristics ?? x ?? output: k cos q ?? y ?? output: k sin q peak amplitude (rf=0 dbm): 150 mv min. (into 150 w) bandwidth: dc-10% of rf impedance (x and y): 150 w nom. signal leakage (isolation): 30 db typ. output accuracy amplitude balance: 5 mv max. zero crossing (in-phase in): 2 @ f o phase error, arc tan q : 5 @ f o weight, nominal: 0.32 oz (9 g) operating temperature: -- 55 to +85c general notes: 1. merrimac phase comparators provide two output signals each of which is proportional to the phase relation of the two inputs. 2. one output is proportional to the sine of the relative phase angle between the rf and lo inputs while the other output represents the cosine of the relative phase angle between the inputs. using the sine and cosine outputs together resolves the inherent p- period ambiguity across four quadrants for both outputs. 3. the phase comparator is an integrated assembly consisting of a power divider, two balanced mixers and a 90 quadrature hybrid. two diplexers attenuate the second harmonic (2 f o ) at the outputs. 4. custom designs are available that provide higher precision and better accuracy. inquiries concerning your special applications are welcomed. 23feb96 output voltage as a function of relative phase angle 160 0 mv -160 0 90 180 270 360 notes: 1. tolerance on 3 place decimals .010(.25) except as noted. 2. dimensions in inches over millimeters. 3. dimensions marked with * apply only at body. 4. all unmarked pins are case ground.
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