5 4 3 2 1 REVISION HISTORY V+ V+ 3.15V - 3.45V E1 ECO REV __ GND E2 DESCRIPTION 3 PRODUCTION APPROVED MICHEL A. DATE 08-16-12 D D C16 22uF 3528 10V V+ + FILTA 3 H 2 1 L JP1 C14 1uF V+ J1 R6 OPT IN+ C6 0.01uF R7 49.9 SMA-R V+ R16 330k U1 C13 0.1uF 1 2 3 R11 OPT 4 5 V+ 6 R14 OPT IN- C8 0.01uF H FILTB L 3 2 1 * U1 ASSY R1-R4 Z1-Z4 R20-R21 -A LVPECL LTC6957HMS-1 130 OHM 0.01uF OPT -B LVDS LTC6957HMS-2 OPT 0 OHM 100 OHM * FILTA SD1 V+ OUT1+ IN+ OUT1- IN- OUT2- GND OUT2+ FILTB SD2 A 1. ALL RESISTORS AND CAPACITORS ARE 0603. R18 330k 12 SMA-R * Z2 * J4 OUT1- OUT1- R2 11 SMA-R * 10 8 7 Z3 R21 3 2 1 SD2 * * J5 OUT2- OUT2SMA-R * H Z4 L JP4 TECHNOLOGY OUT2+ SMA-R B 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 A LOW PHASE NOISE, DUAL LVPECL OR LVDS OUTPUT BUFFER / DRIVER / LOGIC CONVERTER SIZE IC NO. DATE: REV. LTC6957HMS-1 / -2 DEMO CIRCUIT 1765A N/A SCALE = NONE J6 OUT2+ * KIM T. MICHEL A. * R4 APPROVALS 3 C 9 R19 330k 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. 4 OUT1+ R1 V+ THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 L J3 OUT1+ R3 CUSTOMER NOTICE NOTE: UNLESS OTHERWISE SPECIFIED Z1 * H * JP2 B SD1 R20 V+ R15 49.9 SMA-R 3 2 1 JP3 C J2 R17 330k 08/16/2012, 06:45 PM 2 3 SHEET 1 1 OF 1