5 4 3 2 1 REVISION HISTORY ECO REV DESCRIPTION APPROVED DATE 1 FIRST PROTOTYPE LEO C. 06/02/10 D D C1 0.1uF VCC C3 4 6 7 5 VCC 11 3 JP1 9 R2 4.99K R3 4.99K 1% 1% 6 E4 GND 7 3 B 2 SCL WP A2 A1 A0 5 4 3 14 5 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 DIFFERENTIAL DELTA SIGMA I2C ADC IC NO. REV. LTC2473CDD N/A SCALE = NONE EESCL 1% TECHNOLOGY SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 12 MISO 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 MOSI/SDA GND E3 VCC 0 10 SCK/SCL GND 2 VCC A0 1 C CS 13 12 5 1 5V SDA GND 0.1uF VUNREG 3 C8 2 VCC 2 1 IN- 1 8 1K SDA 10 10uF VCC R5 IN- 0.1uF GND 0.1uF SCL A0 0.1uF C6 6 3 C7 REF- E5 C2 C4 SCL 8 1K IN+ COMP 9 GND GND GND R1 13 11 7 4 E1 IN+ REFOUT U1 LTC2473CDD C J1 VCC 0.1uF 8 E2 REFOUT DEMO CIRCUIT 1716A DATE: Wednesday, June 02, 2010 2 SHEET 1 1 1 OF 1