E-Series RF 4:1 Transformer 890 - 960 MHz ETC4-1T-11 V3.00 Features ● ● ● SM-22 Surface Mount 4:1 Impedance Ratio CT on Secondary Description M/A-COM’s ETC4-1T-11 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 Dimensions in ( ) are in mm. Unless Otherwise Noted: .x = ±0.04 (1.00) .xx = ±0.02 (0.50) .xxx = ±0.010 (0.250) Specifications @ 25°C Pin Configuration Frequency Range: 890 - 960 MHz Parameter Maximum Insertion Loss (fL - f U) 1.75 dB Amplitude Unbalance 3.0 dB Phase Unbalance 20° Mean (x) 0.22 dB – – Sigma (σ) 0.094 – – Note: Mean and sigma calculated from average loss at @ (f U - f L)/2 + f L. Pin No. Function 1 Secondary 2 Secondary CT 3 Secondary dot 4 Primary dot 5 Primary Ordering Information Part No. ETC4-1T-11 ETC4-1T-11TR Packaging Tubes Tape & Reel S 0840 D 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 ETC4-1T-11 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 - 3 GHz) PHASE UNBALANCE vs FREQUENCY A1 avgpb2 avgpb1 avgs31 avgs21 0.0B 0.0A 360.0B 360.0A INSERTION LOSS vs FREQUENCY B1 30.0 kHz 30.0 kHz freq freq 3.0 GHz A 3.0 GHz B 0.0 0.0 –10.0 –10.0 B1 30.0 kHz 30.0 kHz INPUT IMPEDANCE vs FREQUENCY 5.0A B AMPLITUDE UNBALANCE vs FREQUENCY A1 3.0 GHz A 3.0 GHz B freq freq A1 30.0 kHz freq 3.0 GHz A Y–FS= 1.0 –5.0 avgiprl avgab B1 30.0 kHz freq 3.0 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