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ATTENUATORS, PIN DIODE
"PHASE-FREE 0.25-18 GHz " GENERAL INFORMATION:
KDI/Triangle's phase free Pin diode attenuators change the amplitude of a microwave signal with matched (low) VSWR over the full attenuation range, and with minimum phase shift change. The units are supplied with either an analog or with a digital control input, with a dynamic attenuation range of 32 dB minimum. Standard digital units are supplied with 8 TTL logic inputs (bits) and therefore can produce 256 discrete values of attenuation. Units with 10 or 12 bits can be provided as specials.
SERIES DF & FF
GENERAL SPECIFICATIONS:
Frequenc y Rang e: RF Impedance: D.C. Volta ge: Logic (DF Series) : No. of Bits: Attentuation: Contr ol Rang e: (FF Series) Contr ol Input Impedance Accura y/Frequen y Flatnes c c s 0.25 to 18.0 GHz 50 OHMS 15 volts at 50 mA TTL compatible 8 L.S.B. = 0.125 dB. 31.875 dB 0-10 volts produces 0-32 dB. Other control voltages can be provided on request. 10 K Ohms, 20 pf For octave models, the frequency sensitivity including digital settability is typically 0.8 dB to 20 dB; 1.25 dB to 32 dB over the frequency range. Narrow band units are proportionally more accurate. 100 mW CW 60 watts peak operational. Units will not be damaged by application of 1 watt CW 100 watts peak. Operating temperature from -55C to +85C A) Standard: 0.3 dB from + 10C to +40C B) 0.5 dB to 20 dB and 0.75 dB to 32 dB can be provided from -54C to +85C. If this stability is desired, add a suffix TT to model number.for example, if the DF-74 is desired with temperature compensation, it is ordered as DF-74-TT. SMA standard. A mating multipin connector can be supplied with each unit upon request. ITT Cannon MDB-1-15SSL or equivilent. Response time of all models is 10 microsec. Faster models (to 150 nanosec.) can be quoted on request. Any of the models "FF" can be supplied with a linearizer by adding a prefix 2. For example, if the FF-47 is desired with a linearizer, it is ordered as a 2-FF-47.The overall accuracy including linearity and frequency sensitivity is then 0.75 dB to 20 dB and 1.25 dB to 32 dB. C in[mm] 3.600[91,4] 2.600[66,04] 3.600[91,4] 4.100[104,14] 3.100[78,74] 4.100[104,14] D in[mm] 3.375[85,72] 1.375[34,92] 3.375[85,72] 3.375[85,72] 1.375[34,92] 1.375[34,92] E in[mm] 0.38[9,65] 0.35[8,9] 0.45[11,4] 0.31[7,87] 0.40[10,2] 0.45[11,4] F in[mm] 0.25[6,4] 0.25[6,4] 0.31[7,87] 0.28[7,11] 0.25[6,4]
Notes:
1. Harmonic Distortion: Approximately -50 dBc for Pin 0 dBm at a frequency of 1.0 GHz for most units. This value improves by approximately 10 dB per octave as the frequency increases; however, since this value is dependent on bandwidth of the unit, power input, and switching speed required, the factory should be consulted if harmonic content is an important system requirement. 2. The phase shift over the center half of the frequency range is 1/2 of the value listed, e.g.: the phase shift of the FF-47 is 5 from 2.5 to 3.5 GHz (0-20 dB). See Fig. 2 3. Other configurations (up to 12 Bits) or units with different attenuation values can be quoted on request.
.32 [8,2] TYP
RF Power:
Temperature In ormation: f Temperature Stability:
.38 [9,7] TYP RF
A/2
F
PIN #1 REF
POWER/LOGIC
Connecto s: r
B D RF
Switc hing Speed:
E C A .125/[3,20] DIA THRU 3 MTG HOLES .20 .10 [5,0] [2,5]
Linearization:
.56 [14,2] ITT CANNON MDB1-15PSP OR EQUIV.
DIGITAL MODELS (DF SERIES)
G in[mm] 0.32[8,12] 0.34[8,6] -- -- --
OutLine 1 2 3 4 5 6
A in[mm] 4.00[101,6] 3.00[76,2] 4.00[101,6] 4.50[114,3] 3.50[88,9] 4.50[114,3]
B in[mm] 4.00[10,1] 2.00[50,8] 2.00[50,8] 4.00[101,6] 2.00[50,8] 2.00[50,8]
POWER LOGIC PIN CONNECTIONS
PIN 1-12 13 14 15 FUNCTION Logic inputs +15 VDC -15 VDC GND
0.39[9,90] 0.32[8,12]
KEY: Inches[Millimeters] .XX .03 .XXX .010 [.X 0.8 .XX 0.25]
10/98
An MCE Company
CORPORATION
TRIANGLE
60 South Jefferson Road, Whippany, NJ 07981 Tel: 973-887-8100 * Fax: 973-884-0445 E-Mail: kdisales@aol.com See us on the web @ www.kditriangle.com
ATTENUATORS, PIN DIODE
"PHASE-FREE 0.25-18 GHz " SPECIFICATIONS
DF Series
SERIES DF & FF
VSWR For All Values of Atten. Maximum 1.5 1.5 1.5 1.5 1.5 1.75 1.8 2.2
Digital Model* No. FF-18 FF-32 FF-36 FF-45 FF-47 FF-62 FF-73 FF-74
Analog Model No. DF-18 DF-32 DF-36 DF-45 DF-47 DF-62 DF-73 DF-74
Frequency Range GHz 0.25-0.5 0.95-1.25 1.0-2.0 1.7-2.4 2.0-4.0 4.0-8.0 7.0-12.4 8.0-18.0
FF Outline 1 1 3 3 3 2 2 2
DF Outline 4 4 6 6 6 5 5 5
Least Significant Bit dB Note 3 .125 .125 .125 .125 .125 .125 .125 .125
Insertion Atten. Loss Range Maximum Maximum dB dB 32 4.5 32 3.0 32 4.0 32 3.5 32 3.0 32 3.75 32 4.25 32 5.5
Maximum Phase Shift Deg. 0-20 dB 20-32 dB 10 15 5 7.5 10 15 6 10 10 15 12 15 12 15 15 20
* Add Prefix "2" for Linearization Add Suffix "TT" for Temp Comp; -55 to +85 c
G F RF GND -15V +15V CONTROL B .56[14,22]
0.38 [09,7] TYP.
A/2 0.125[3,18] DIA THRU 3 MTG. HOLES NOTE:EITHER RF CONNECTOR MAY BE USED FOR INPUT
TYPICAL CURVE OF ATTENUATION VS CONTROL VOLTAGE FIG. 1 32 30 NON LINEARIZED 25
SMA FEMALE TYP.
0.5 dB
D
20
E 0.10[2,5] C A 0.20[5,1]
ATTENUATION (dB)
LINEARIZED 15 BEST FIT STRAIGHT LINE
ANALOG MODELS (FF SERIES)
10
5
TRANSMISSION PHASE (DEGREES)
+15 +12 +9 +6 +3 0 -3 -6 -9 -12 -15 Fmin
TYPICAL CURVE OF FF-18 OR DF-18 AT MAX. ATTENUATION (32 dB) TYPICAL CURVE OF FF-45 OR DF-45 AT MAX. ATTENUATION (32 dB) TYPICAL CURVE OF FF-18 OR DF-18 AT 20 dB ATTENUATION TYPICAL CURVE OF FF-45 OR DF-45 AT 20 dB ATTENUATION REF. PHASE AT ZERO ATTENUATION FOR FF-18 OR DF-18 AND FF-45 OR DF-45 F0 FREQUENCY Fmax
0 0 2 5 8 CONTROL VOLTAGE (V) 10
PHASE SHIFT VS FREQUENCY AT VARIOUS ATTENUATION LEVELS
KEY: Inches[Millimeters] .XX .03 .XXX .010 [.X 0.8 .XX 0.25]
An MCE Company
CORPORATION
TRIANGLE
60 South Jefferson Road, Whippany, NJ 07981 Tel: 973-887-8100 * Fax: 973-884-0445 E-Mail: kdisales@aol.com See us on the web @ www.kditriangle.com
10/98

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