Surface Mount RF Transformer 75 TC1.33-1T-75X+ 3 to 500 MHz The Big Deal * Excellent return loss, 23dB typical * Highly accurate 75 to 100 balanced transition * Cost-effective design CASE STYLE: AT1521 Product Overview This high-performance, low-cost transformer is ideal for use with push-pull amplifiers where balanced-tounbalanced RF signal transformation is required. It is an ideal match for the inputs of Mini-Circuits dual MMIC amplifiers. When used in this configuration, the high phase and amplitude accuracy provides excellent IP2 and IP3 performance, making it ideal for use in 75 CATV return applications or any single-ended 75 to balanced 50 application. Key Features Feature Advantages Wideband Usable range of 3MHz to 500MHz makes this transformer suitable for multiple applications and covers the entire spectrum of CATV return path applications. Excellent phase and amplitude performance Typical amplitude unbalance of 0.5dB and phase unbalance of 3 in a 1dB bandwidth is unmatched for a transformer in this price range. DC isolation This feature enables the TC1 series to work in applications down to very low frequencies and when isolation of the primary and secondary windings is required. Highly accurate impedance matching The very accurate matching makes this product ideal for CATV applications running parallel 75 single-ended signals into 100 circuits in a differential configuration. Extremely low cost Mini-Circuits's unique design approach enables a high-performance transformer to be available in the market at a low cost for high-volume production. Mini-Circuits (R) ISO 9001 ISO 14001 AS 9100 CERTIFIED P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661 The Design Engineers Search Engine For detailed performance specs & shopping online see web site (R) Provides ACTUAL Data Instantly at minicircuits.com IF/RF MICROWAVE COMPONENTS Notes: 1. Performance and quality attributes and conditions not expressly stated in this specification sheet are intended to be excluded and do not form a part of this specification sheet. 2. Electrical specifications and performance data contained herein are based on Mini-Circuit's applicable established test performance criteria and measurement instructions. 3. The parts covered by this specification sheet 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. Page 1 Surface Mount RF Transformer 75 TC1.33-1T-75X+ 3 to 500 MHz Maximum Ratings Operating Temperature Storage Temperature RF Power DC Current -40C to 85C -55C to 100C 250mW 30mA Permanent damage may occur if any of these limits are exceeded. Pin Connections PRIMARY DOT PRIMARY SECONDARY DOT SECONDARY SECONDARY CT 6 4 1 3 2 Features * wideband, 3 to 500 MHz * DC isolated * good return loss * excellent amplitude unbalance, 0.5 dB typ. and phase unbalance, 3 deg typ. in 1 dB bandwidth * plastic base with leads * aqueous washable CASE STYLE: AT1521 PRICE:$2.19 ea. QTY (20) $1.19 ea. QTY (100) +RoHS Compliant The +Suffix identifies RoHS Compliance. See our web site for RoHS Compliance methodologies and qualifications Applications * * * * balanced to unbalanced transformation push-pull amplifiers impendance matching CATV Outline Drawing AT1521 and Reel Available Tape cost at no extra Devices/Reel 20, 50, 100, 200, 500 1000, 2000 Reel Size 7" 13" Transformer Electrical Specifications (TAMB=25C) RATIO (Secondary/Primary) 1.33 FREQUENCY (MHz) PHASE UNBALANCE (Deg.) Typ. INSERTION LOSS* 3-500 AMPLITUDE UNBALANCE (dB) Typ. 2 dB MHz 1 dB MHz 1 dB bandwidth 2 dB bandwidth 1 dB bandwidth 2 dB bandwidth 3-500 5-300 3 5 0.5 0.9 *Insertion Loss is referenced to mid-band loss, 0.5 dB typ. PCB Land Pattern Typical Performance Data INPUT R. LOSS (dB) 3.00 5.00 10.00 50.00 100.00 0.72 0.60 0.52 0.49 0.50 20.21 22.88 26.09 29.53 29.06 0.03 0.03 0.02 0.00 0.05 0.05 0.08 0.17 0.67 1.30 200.00 300.00 400.00 450.00 500.00 0.55 0.61 0.69 0.74 0.79 26.79 24.51 22.74 21.90 21.14 0.25 0.56 0.96 1.18 1.44 2.48 3.37 4.07 4.37 4.62 Suggested Layout, Tolerance to be within .002 Outline Dimensions ( inch mm ) B .150 3.81 C .160 4.06 D .050 1.27 G .028 0.71 H .065 1.65 J .190 4.83 K .030 0.76 E .040 1.02 F .025 0.64 wt grams 0.15 INPUT RETURN LOSS INSERTION LOSS 35.0 RETURN LOSS (dB) INSERTION LOSS (dB) 1.6 Config. A PHASE UNBALANCE (Deg.) INSERTION LOSS (dB) Notes: 1. Case Material: Plastic 2. Termination Finish: Tin plate over Nickel plate. 3. Lead#1 identifier shall be located in the cross-hatched area shown, on bottom view. Identifier may be either a molded or marked feature. 4. Top-Hat total thickness: .013 inches max. A .150 3.81 AMPLITUDE UNBALANCE (dB) FREQUENCY (MHz) 1.2 0.8 0.4 0.0 30.0 25.0 20.0 15.0 10.0 5.0 0 100 200 300 FREQUENCY (MHz) 400 500 Mini-Circuits (R) ISO 9001 ISO 14001 AS 9100 CERTIFIED P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661 The Design Engineers Search Engine 0 100 200 300 FREQUENCY (MHz) For detailed performance specs & shopping online see web site (R) Provides ACTUAL Data Instantly at minicircuits.com IF/RF MICROWAVE COMPONENTS Notes: 1. Performance and quality attributes and conditions not expressly stated in this specification sheet are intended to be excluded and do not form a part of this specification sheet. 2. Electrical specifications and performance data contained herein are based on Mini-Circuit's applicable established test performance criteria and measurement instructions. 3. The parts covered by this specification sheet 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. 400 500 REV. OR M133746 TC1.33-1T-75X+ ED-13828/7 WP/CP/AM 120508 Page 2