5 4 3 2 1 REVISION HISTORY ECO REV __ DESCRIPTION 3 PRODUCTION APPROVED DATE SUNNY H. 07-16-10 VCC VCC D 3.15V - 3.45V E2 D GND BBMI VCC E3 J9 VCC R4 GND OPT E4 BBPI J8 50 Ohm 50 Ohm R6 R1 OPT 1 0603 R11 OPT C12 OPT R10 OPT EN C11 OPT J7 VCC OPT TP1 E6 C3 1nF C1 4.7uF 0603 C5 OPT 0603 R2 1.3 0603 20 GNDRF 21 23 19 GND BBMI BBPI GNDRF 13 NC RFOUT J6 C8 0.2pF 26 GND GNDRF 25 8 J2 C7 6.8pF 14 GNDRF GND U1 * LOM 50 Ohm 50 Ohm 15 NC GND NC LINOPT GND 3 C14 1nF 17 16 RF LOM 5 6 7 C 18 VCC2 LOP 12 4 E7 C2 4.7uF 0603 C4 1nF GNDRF BBPQ 50 Ohm GND 11 3 BP 50 Ohm GND 24 VCC1 EN 2 BBMQ 4 1 9 0 Ohm E1 BP GND GND 2 1 UNBP NC 6 5 EN U2 BD1631J50100A R3 OPT R5 10 J1 22 TP2 LOP C C6 OPT 0603 EN J5 OPT B B R12 OPT C9 OPT LINOPT E5 R14 1 C13 R13 OPT 100nF R7 OPT R8 OPT 50 Ohm R9 OPT C10 OPT 50 Ohm J3 J4 BBMQ BBPQ NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0402. ALL CAPACITORS ARE IN MICROFARADS, 0402 CUSTOMER NOTICE A * ASSY U1 DC1524A-A LTC5588IPF-1 DC1524A-B LTC5588IPF-2 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 3 APPROVALS PCB DES. APP ENG. TECHNOLOGY A.K. SUNNY H. 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only TITLE: SCHEMATIC HIGH LINEARITY DIRECT QUADRATURE MODULATOR SIZE N/A SCALE = NONE 2 DATE: IC NO. LTC5588IPF REV. 3 DEMO CIRCUIT 1524A Thursday, September 02, 2010 SHEET 1 1 OF 1 A