5 4 3 2 1 1.1GHz - 4GHz J2 LO R1 11 0.1% * C1 33pF C9 33pF GND 19 GND 20 4 IF- * R2 11 0.1% C4 100pF 11 VCC 10 VCC VCC L2 40nH C5 10pF TL3 J3 RF C8 0.7pF GND 13 6 GND C11 OPT. * * GND 14 5 GND 9 C2 33pF C L3 0 RF 15 VCC 5 TL2 GND 16 8 1 * C3 1.8pF GND 18 GND 17 3 IF+ GND 2 J1 IF TL1 7 4 U1 LT5579IUH 2 GND 25 GND 3 T1 4:1 1 GND GND 21 C10 OPT. LO 22 L1 40nH GND 23 D GND 24 D C GND 12 C6 1nF C7 1uF TP1 VCC 3.15V - 3.6V * NOTE: Component values depend on board version. B VERSION IF FREQ. RF FREQ. DC1233A-A 456MHz 3.6GHz DC1233A-B 456MHz DC1233A-C DC1233A-D C1, C2 C3 C8 33pF 1.8pF 0.7pF 2.6GHz 33pF 2.7pF 240MHz 2.14GHz 82pF 0.45pF 3.9nH 240MHz 1.95GHz 82pF 1pF 4.7nH L3 1nH CONTRACT NO. LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 B 0 Ohm CUSTOMER NOTICE A GND TP2 3 APPROVALS DRAWN DATE HELEN Z. 10/02/07 SUNNY H. 10/02/07 CHECKED TECHNOLOGY TITLE ENGINEER Wednesday, January 23, 2008 SIZE A LT5579IUH HIGH LINEARITY ACTIVE MIXER APPROVED DESIGNER 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 CAGE CODE FILENAME: SCALE: 2 DWG NO DC1233A-A/B/C/D SHEET 1 1 OF REV A 1