Surface Mount RF Transformer ADT2-71T+ 50 0.005 to 70 MHz The Big Deal Low insertion loss, 0.9 dB Low unbalance, 0.5 dB, 3 CASE STYLE: CD637 Small size, 0.27 x 0.31 x 0.22 Product Overview Mini-Circuits ADT2-71T+ is a 50 DC isolated surface-mount transformer with a secondary/primary im- pedance ratio of 2:1 and a center tap on the secondary winding. This model covers the 0.005 to 70 MHz band with low insertion loss (0.9 dB) as well as low phase unbalance (3) and amplitude unbalance (0.5 dB). The unit comes enclosed in a miniature, 6-lead plastic package measuring just 0.27 x 0.31 x 0.22, ideal for dense circuit board layouts. Key Features Feature Advantages Provides DC isolation between circuits and efficient AC transmission, eliminating the DC isolation need for external DC biasing components. Secondary center tap Allows DC feed up to 30 mA and DC bias without adding bias tees into the signal chain. Low insertion loss, 0.9 dB Excellent transmission of signal power from input to output. Low phase and amplitude unbalance, 3, Low phase and amplitude unbalance can improve a systems electromagnetic compat- 0.5 dB ibility by rejecting unwanted common-mode noise. Small footprint, 0.27 x 0.31 x 0.22 Accommodates tight space requirements for dense PCB layouts. Notes A. Performance and quality attributes and conditions not expressly stated in this specification document are intended to be excluded and do not form a part of this specification document. B. Electrical specifications and performance data contained in this specification document are based on Mini-Circuits applicable established test performance criteria and measurement instructions. C. The parts covered by this specification document are subject to Mini-Circuits standard limited warranty and terms and conditions (collectively, Standard Terms) Purchasers of this part are entitled to the rights and benefits contained therein. For a full statement of the Standard Terms and the exclusive rights and remedies thereunder, please visit Mini-Circuits website at www.minicircuits.com/MCLStore/terms.jsp Mini-Circuits www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales minicircuits.com Page 1 of 2Surface Mount RF Transformer ADT2-71T+ 50 0.005 to 70 MHz Maximum Ratings Features Operating Temperature -20C to 85C wideband, 0.005 to 70 MHz Generic photo used for illustration purposes only excellent amplitude unbalance, 0.2 dB typ. Storage Temperature -55C to 100C CASE STYLE: CD637 and phase unbalance, 2 deg. typ. in 1 dB bandwidth RF Power 0.25W +RoHS Compliant aqueous washable DC Current 30mA The +Suffix identifies RoHS Compliance. See our web site plastic base with leads Permanent damage may occur if any of these limits are exceeded. for RoHS Compliance methodologies and qualifications Pin Connections Applications PRIMARY DOT 3 Reel Size Devices/Reel impedance matching PRIMARY 1 13 900 balanced to unbalanced transformation SECONDARY DOT 4 push-pull amplifiers SECONDARY 6 SECONARY CT 5 NOT USED 2 Electrical Specifications 25C Parameter Frequency (MHz) Min. Typ. Max. Unit Outline Drawing Impedance Ratio (secondary/primary) 2 Frequency Range 0.005 70 MHz 0.01 - 50 0.4 1.3 Insertion Loss dB 0.005 - 70 0.9 1.8 0.01 - 50 0.2 0.5 Amplitude Unbalance dB 0.005 - 70 0.5 1.0 0.01 - 50 1.0 5.0 Phase Unbalance Degree 0.005 - 70 3.0 8.0 PCB Land Pattern Typical Performance Data FREQUENCY INSERTION INPUT AMPLITUDE PHASE (MHz) LOSS R. LOSS UNBALANCE UNBALANCE (dB) (dB) (dB) (Deg.) Suggested Layout, Tolerance to be within .002 0.005 1.00 9.12 0.00 0.03 0.010 0.39 13.90 0.00 0.02 0.050 0.07 26.83 0.00 0.02 inch Outline Dimensions ( ) 0.100 0.05 32.43 0.00 0.03 mm 0.500 0.04 39.29 0.00 0.03 A B C D E F G 2.000 0.05 33.89 0.00 0.06 .272 .310 .220 .100 .206 .055 .100 10.000 0.18 24.23 0.02 0.24 6.91 7.87 5.59 2.54 5.23 1.40 2.54 30.000 0.33 17.30 0.09 0.73 50.000 0.46 12.93 0.25 1.55 H J K L wt 70.000 0.96 10.08 0.54 2.82 .030 .026 .065 .300 grams 0.76 0.66 1.65 7.62 0.40 Demo Board MCL P/N: TB-430 ADT2-71T+ ADT2-71T+ INSERTION LOSS INPUT RETURN LOSS 1.0 50 0.8 40 Config. A 0.6 30 0.4 20 0.2 10 0.0 0 0 14 28 42 56 70 0 14 28 42 56 70 FREQUENCY (MHz) FREQUENCY (MHz) Notes A. Performance and quality attributes and conditions not expressly stated in this specification document are intended to be excluded and do not form a part of this specification document. B. Electrical specifications and performance data contained in this specification document are based on Mini-Circuits applicable established test performance criteria and measurement instructions. REV. A C. The parts covered by this specification document are subject to Mini-Circuits standard limited warranty and terms and conditions (collectively, Standard Terms) Purchasers of this part are entitled M175723 to the rights and benefits contained therein. For a full statement of the Standard Terms and the exclusive rights and remedies thereunder, please visit Mini-Circuits website at www.minicircuits.com/MCLStore/terms.jsp ADT2-71T+ ED-12619/4 Mini-Circuits IG/CP/AM 200421 www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 sales minicircuits.com Page 2 of 2 Available Tape and Reel at no extra cost INSERTION LOSS (dB) RETURN LOSS (dB)