5 4 3 2 1 REVISION HISTORY ECO REV 3 __ FB1 330 Ohm @ 100MHz C1 4.7uF E2 SDO E3 2 1 CS CSB 19 20 SDI SCLK 22 21 SD0 EN VCC GNDRF TTCK GNDRF 7 E5 GND 17 16 15 C4 J2 0.01uF C RF 14 13 GND TTCK GNDRF 18 12 6 RF LOC BBMQ 5 15pF LOL BBPQ C5 GNDRF U1 LTC5599IUF 11 4 J1 GND BBMI 3 GNDRF 10 L1 39nH C VCTRL 9 2 BBPI C3 0.1uF TEMP E4 23 R1 1 1 LO SCLK 25 VCTRL SDI C2 1000pF JP1 8 EN D E1 24 GND APPROVED DATE WESTON S. 06-11-14 VCC GND VCC 3.3V D DESCRIPTION PRODUCTION TEMP E6 R4 0 BBMI R6 J6 R3 0 BBPI 0 J4 R5 R2 J3 OPT 0 R12 OPT J5 BBMQ BBPQ B B R8 49.9 C6 0.1uF GND R10 49.9 R9 49.9 C7 0.1uF C8 0.1uF R11 49.9 C9 0.1uF E7 CUSTOMER NOTICE 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. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 TECHNOLOGY AK WESTON S. TITLE: SCHEMATIC 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only LOW POWER I/Q MODULATOR 50MHz -1250MHz IC NO. REV. LTC5599IUF N/A 3 DEMO CIRCUIT 2091A SIZE SCALE = NONE 2 DATE: Wednesday, June 11, 2014 SHEET 1 1 OF 2 A 5 4 3 2 1 VCC VCC_L 1 2 3 D D JP2 U5 NC7WZ17P6X R22 200K VCC_L 1 R23 1K 6 3 4 2 5 CS C10 2.2pF E8 VCC_L GND VCC R25 1K C11 0.1uF U3 NC7WZ17P6X 1 R26 1K 6 3 SCLK C12 2.2pF SDI C13 2.2pF 4 VCC_L C C 2 HD-2X7.0.79 P1 ISO_7V_UNREG ISO_5V_3p3v_REG ISO_CSb ISO_SCK_SCL ISO_SDA_MOSI ISO_MISO EE_VCC EE_SDA EE_SCL EE_GND ISO_GND ISO_GND GPIO1 VCC 5 C14 0.1uF VCC_L U4 74LVC1T45GW 1 1 2 C15 0.1uF 6 4 2 VCC(A) GND VCC(B) DIR VCC_L 6 5 C16 0.1uF R18 1K 7 R20 100 5 3 C17 0.1uF R19 1K 4 10 SDO C18 2.2pF 9 11 12 14 B R15 4.99K R14 4.99K R13 4.99K 8 7 3 8 13 ISO_GND B GND 6 5 VCC A0 WP A1 SCL A2 SDA VSS 1 2 3 4 U2 24LC025 CUSTOMER NOTICE 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. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 TECHNOLOGY AK WESTON S. TITLE: SCHEMATIC 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only LOW POWER I/Q MODULATOR 50MHz -1250MHz IC NO. REV. LTC5599IUF N/A 3 DEMO CIRCUIT 2091A SIZE SCALE = NONE 2 DATE: Wednesday, April 30, 2014 SHEET 2 1 OF 2 A