DTF- Seres
A i
DOUBLE BALANCED M I
XER
1 t 3500 M Hz/+10 t +15 dBm LO /HiRelHer i Pac
o
o
-
metc kage
PRINCIPAL SPECIFICATIONS
RF/LO
Model Frequency,
Number
MHz
DTF-2A-1250 1 - 3500
LO Operating
Drive, Range,
Nom.
MHz
+10 dBm 10 - 200
200 - 2500
1 - 3500
+15 dBm 10 - 200
200 - 2500
1 - 3500
Conversion Port Isolation, Min.
Loss, dB,
L-R L-X R-X
Max. Typ.
dB dB dB
7.5
8.5
9.5
7.5
8.5
9.5
6.5
7.0
8.0
6.5
7.0
8.0
30
25
25
35
30
28
30
25
25
30
25
25
30
23
20
30
25
20
1 dB
Input
1 dB
Compr. Intercept Desens.
Point
Point
Level
+7
dBm
(typ.)
+13
dBm
(typ.)
+14
dBm
(typ.)
+20
dBm
(typ.)
+5
dBm
(typ.)
+11
dBm
(typ.)
DTF-4A-1250 1 - 3500
All specifications are as measured in a 50Ω system, at nominal LO power in a down converter application
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.
Package Outline
NOTES:
GENERAL SPECIFICATIONS
IF Frequency Range:
Impedance:
1 - 1000 MHz
50
Ω
nom.
Third Order Intermodulation
Ratio Degradation:
3 dB typ. for IF
VSWR of 3.0:1
Useful LO Drive Range:
±
3 dB of nominal
SSB Noise Figure:
Weight, nominal:
Within
±1
dB of
Conversion Loss
0.15 oz (4.2 g)
Operating Temperature: – 55° to +85°C
General Notes:
1. The DTF-A series Termination Insensitive Mixers cover the frequency range of 1 to 3500 MHz using transmission line
hybrid junction techniques to isolate the diode rings from termination mismatch-induced reflections. This means the
intermodulation ratio is independent of the IF port load impedance, so this unit is ideal for applications where a high
performance mixer must drive a reactive load (e.g., filter) at the IF port. The DTF-A series and related models are available
in PC, SMD and connectorized packages.
2. Merrimac offers a broad selection of Double Balanced Mixers ideal for a variety of signal processing functions with
frequencies ranging from 20 kHz to 20 GHz and for applications from routine to very special.
3. Merrimac mixers comply with MIL-M-28837 and may be supplied screened for compliance with additional specifications
for military and space specifications requiring the highest reliability.
29Apr96
Fo f t e i or i c t c
M ERRI AC /41 Faifel Pl,W estCal
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dwel,NJ,07006 / 973-575-
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1300 /FAX 973- 0531
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