5 4 3 2 1 REVISION HISTORY ECO __ ISO-3.3V C15 100nF E3 TEMP BBMI B BBPI E5 A 20 21 SDI SCLK 22 23 EN 19 GNDRF 5 C13 2.2pF 10 9 18 12 C16 0.1uF 17 C4 16 14 100pF J2 15 RF 1 C17 0.2pF 14 13 2 3 4 A0 VCC U2 A1 WP 24LC025 A2 SCL VSS SDA 8 R13 4.99K 7 R14 4.99K ISO_CSb ISO_SCK_SCL ISO_SDA_MOSI ISO_MISO EE_VCC R15 4.99K P1 EE_SDA EE_SCL C EE_GND GPIO1 6 5 TP7 SCL TP6 SDA 12 11 10 C12 2.2pF GND GNDRF BBMQ TTCK BBPQ GNDRF BBMI C11 2.2pF 7 1K CSB RF GND BBPI R7 ISO_5V_3p3v_REG C14 1nF EE_GND E6 J4 J6 R2 J3 C6 OPT GND LOC 7 TTCK R28 100K 4 11 GNDRF U1 LTC5589IUF R19 1K R8 OPT GND GND LOL 0 C10 2.2pF GNDRF 9 5 VCTRL 8 3 SD0 25 2 4 C5 2pF 24 GND 1 TEMP C3 100nF 6 J8 OPT 6 R16 1K VCC R1 1 R27 OPT 2 1nF R20 E4 C18 0.2pF TP5 ISO_7V_UNREG ISO_GND C2 L1 4.7nH J1 TP4 HD-2X7.0.79 1 R17 1K C LO TP3 R23 200K CSB R18 1K R25 OPT VCTRL SCLK SDI TP2 JP1 R26 OPT TEST SDO R24 OPT J7 OPT E10 R21 10 ISO_GND 1K ISO_GND R22 13 E2 2 TEST D C1 4.7uF 8 EN APPROVED DATE ANDY M. 01-12-16 3 GND E1 DESCRIPTION PRODUCTION VCC 1 D VCC 2.7V - 3.6V FB1 330 Ohm @100 MHz REV 3 OPT R12 OPT R10 OPT R9 OPT C7 OPT C8 OPT J5 BBMQ B BBPQ R11 OPT C9 OPT E7 E9 CUSTOMER NOTICE NOTE: UNLESS OTHERWISE SPECIFIED APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. AK VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APPLICATION. COMPONENT SUBSTITUTION AND PRINTED APP ENG. ANDY M. CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 1. ALL RESISTORS ARE IN OHMS, 0402 2. ALL CAPACITORS ARE 0402 TECHNOLOGY 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 LOW POWER I/Q MODULATOR 0.7GHz - 3.8GHz IC NO. REV. LTC5589IUF N/A 3 DEMO CIRCUIT 2391A SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 SCALE = NONE 2 DATE: Tuesday, January 12, 2016 SHEET 1 1 OF 1 A