E-Series RF 4:1 Transformer 3.5 - 700 MHz ETK4-3T V3.00 Features ● ● SM-22 Surface Mount 4:1 Impedance Ratio CT on Secondary Description M/A-COM’s ETK4-3T is a 4:1 RF transformer in a low-cost, surface mount package. Ideally suited for high volume cellular and wireless applications. Typical applications include single to balanced mode conversion and impedance matching. Schematic PRI SEC Specifications @ 25°C Frequency Range: 3.5 - 700 MHz Parameter Insertion Loss (fL - f U) 40 - 200 MHz 3.5 - 500 MHz 500 - 700 MHz Amplitude Unbalance 3.5 - 200 MHz 200 - 700 MHz Phase Unbalance 3.5 - 700 MHz Maximum Mean (x) Sigma (σ) 1.0 dB 2.0 dB 4.0 dB 0.64 dB – – 0.034 – – 0.3 dB 1.0 dB – – – – 15° – – Dimensions in ( ) are in mm. Unless Otherwise Noted: .x = ±0.04 (1.00) .xx = ±0.02 (0.50) .xxx = ±0.010 (0.250) Pin Configuration Note: Mean and sigma calculated from average loss at @ (f U - f L)/2 + f L. Ordering Information Part No. ETK4-3T ETK4-3TTR Packaging Tubes Tape & Reel Pin No. Function 1 Secondary dot 2 Secondary CT 3 Secondary 4 Primary 5 Primary dot S 0980 B Specifications Subject to Change Without Notice. M/A-COM, Inc. North America: 1 Tel. (800) 366-2266 Fax (800) 618-8883 ■ Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 ■ Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020 ETK4-3T E-Series RF 4:1 Transformer V3.00 Absolute Maximum Ratings Parameter RF Power DC Current Operating/Storage Temp. Absolute Maximum 250 mW 30 mA -20°C to +85°C Typical Performance Over Extended Bandwidth (30 kHz - 1.0 GHz) A1 360.0A PHASE UNBALANCE vs FREQUENCY –3.0B –3.0A INSERTION LOSS vs FREQUENCY unit0s31 unit0s21 B1 0.0 –13.0 –13.0 pb B1 30.0 kHz 30.0 kHz freq freq 1.0 GHz A 1.0 GHz B 30.0 kHz INPUT IMPEDANCE vs FREQUENCY 30.0 kHz freq 1.0 GHz A Y–FS= 1.0 –5.0 A1 iprl –ab 5.0A B AMPLITUDE UNBALANCE vs FREQUENCY A1 1.0 GHz A freq 30.0 kHz freq 1.0 GHz B Note: All measurements performed on Hewlett Packard 8753D Network Analyzer (201 sample points, linear scale) in a 50 ohm coplanar waveguide environment. Tables created using MDS software. S-Parameter data available by E-Mail. Send your request to: [email protected]. Specifications Subject to Change Without Notice. M/A-COM, Inc. 2 North America: Tel. (800) 366-2266 Fax (800) 618-8883 ■ Asia/Pacific: Tel. +81 (03) 3226-1671 Fax +81 (03) 3226-1451 ■ Europe: Tel. +44 (1344) 869 595 Fax +44 (1344) 300 020