5 4 3 2 1 REVISION HISTORY ECO REV CAPACITOR ISOLATION 2 ENABLE_A R3 R4 1K [3] [3] 10K 1 DIS D1 GRN U1 [3] 1 SCL_A READY_A E3 2 E5 3 E22 4 0.1uF C4 100pF 0.1uF RXP SCL VCC TXP GND E19 TXN 8 10 9 8 100V 7 7 6 [3] R8 [3] R6 3 2 E1 VCC_B E8 GND_B D EN ENABLE_B 1K D2 GRN U2 [3] C5 100pF 9 R5 READY_B 100V 10 RXN ENABLE RXP SDA VCC SCL TXP 6 C6 100pF 11 GND_A C2 SDA 1 READY TXN 2 E4 3 E6 4 E23 5 GND E18 SDA_B SCL_B READY_B 100V GND_B C11 100pF C DILIAN R. DIS 100V RXN READY 5 10K C1 ENABLE GND SDA_A R7 C3 100pF READY_A APPROVED 1 E7 JP2 R2 GND GND_A JP1 R1 DATE 04/08/10 11 EN 3 E2 D PRODUCTION VCC_B VCC_A VCC_A DESCRIPTION 3 A B C 100V VCC_D VCC_C E10 EN GND_C JP5 2 ENABLE_C 1500 Vrms TRANSFORMER ISOLATION R9 R10 R11 R12 1K [3] [3] 10K JP6 R15 10K R13 [3] R16 R14 [3] 3 E16 3 VCC_C 2 GND_D ENABLE_D 4 E20 5 RXN SDA RXP SCL VCC READY TXP GND TXN 10 1 9 2 8 3 7 4 6 5 6 7 8 C9 0.1uF TD+ CT TX+ CT(2) TD- TX- N/C N/C N/C RD+ CT(3) RD- N/C RX+ CT(4) RX- 16 10 15 9 14 8 13 7 12 6 11 RXN ENABLE RXP SDA VCC SCL TXP READY TXN GND 3 E24 ENABLE U4 [3] GND 1 B 2 E12 3 E14 4 E25 5 E21 SDA_D SCL_D READY_D GND_D 11 E13 T1 EPF8119S GND 2 D4 GRN 0.1uF 11 E11 READY_D 1 1 GND_C 0.1uF U3 [3] 1 B C8 C7 D3 GRN SCL_C VCC_D E17 DIS READY_C READY_C E9 1K DIS SDA_C EN 10 9 C10 0.1uF C D NOTES: UNLESS OTHERWISE SPECIFIED, 1. ALL CAPACITOR AND RESISTOR CASE SIZE ARE 0603. 2. INSTALL SHUNTS AS SHOWN. CUSTOMER NOTICE A [3] ASSY U1-U4 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. R2, R3, R5, R8, R10, R11, R13, R16 -A LTC4310CD-1 10k -B LTC4310CD-2 3.3k TECHNOLOGY PCB DES. MI APP ENG. DILIAN R. 4 3 2 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 ISOLATED I2C THROUGH SPLITTER SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 APPROVALS N/A SCALE = NONE DATE: IC NO. LTC4310CDD-1/-2 DEMO CIRCUIT 1079A Monday, August 02, 2010 1 SHEET 1 REV. 1 OF 1 A