5 4 3 2 1 REVISION HISTORY ECO REV DESCRIPTION APPROVED DATE 1 FIRST PROTOTYPE LEO C. 06/04/10 D D VCC E3 VCC E4 VCC J1 VCC 0.1uF C6 0.1uF 10uF 1 REFOUT SDA 6 7 5 VCC 11 2 3 A0 1 0 JP1 10 9 R2 4.99K R3 4.99K 1% 1% 6 7 3 B 2 SCL WP A2 A1 A0 5 4 3 14 5 MISO EESCL EEVCC EESDA EEGND NC B U2 24LC025-I/ST 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 16-BIT DELTA SIGMA I2C ADC IC NO. REV. LTC2471CDD N/A SCALE = NONE MOSI/SDA 1% TECHNOLOGY SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 12 SCK/SCL 0.1uF 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. MI VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. LEO C. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A R4 4.99K SDA 4 1 CUSTOMER NOTICE C5 C CS GND 1 5V 3 13 11 10 7 4 0.1uF 4 8 GND GND GND GND C2 5 VCC 2 12 SCL GND IN A0 9 6 3 R1 1K REF- E1 IN VUNREG SDA VCC LTC2471CDD 2 SCL 8 C COMP U1 REFOUT 0.1uF 1 C3 GND C4 GND E2 13 C1 8 GND DEMO CIRCUIT 1718A DATE: Tuesday, June 08, 2010 2 SHEET 1 1 1 OF 1