U2 LT1790(opt.) 4 1 DNC DNC VCC VERSION TABLE LTC2656BCUFD-H16 4 C2 0.1uF 1 1 3 13 14 14 15 17 CH2 SCK CH3 CLK CH4 DIN CH5 SDO CH6 CH7 5 U5 LTC2428CG F0 GND 3 5 C7 0.1uF JP3 VCC Enable Disable 3 1 2 23 DNC DNC 1 GND VIN 2 8 2 3 CS_ADC CS_MUX 20 R3 7.5K 25 19 21 24 26 GND 12 CH1 GND 11 V+ 4 R4 7.5K 1 16 CH0 VCC 9 10 VCC 14 15 6 12 VOUTH E7 13 GND 11 VOUTG E5 E8 VCC C9 0.1uF 16 9 E6 VF 7.5K GND DAC-SDO 4 VH C8 100pF GND VOUTF 10 1 3 VE 22 VOUTE INT 2 6 VOUT C6 1.0uF R2 VG FSset VOUTD SDI 5 U4 LT1790ACS6-5 GND CLR SDO 9 E3 20 7 17 11 VCC PROSEL 5 6 LDAC 2 12 VOUTB REF1 6 EXT 4 FSset E4 MUXOUT 10 SDO E1 VOUTC E9 7 C4 0 E14 VOUTA SCK C3 1.0uF 18 GND GND E12 GND E13 R5 5.1K 8 VCC R6 5.1K SCL WP SDA GND 5 C10 0.1uF 4 GND GND 7 5 VD E2 VB 3 8 13 NC 8 SDI VOUT DNC DNC ZSset EESCL EEGND SCK 4 CS/LD GND EESDA 7 REFLO EEVCC CS 6 6 JP1 VA VC 18 MISO 2 19 MOSI/SDA * GND SCK/SCL U1 E10 21 CS E11 VCC REFCOMP 5V VCC R1 7.5K REFIN/OUT VUNREG 1 V+ C12 0.1uF REF2 8 C5 0.1uF VCC V+ VIN 3 5 VCC LDAC J1 HDR2X7-079-MOLEX VREF U3 LT1790ACS6-1.25 GND 1 27 3 2 28 Zero Scale GND LTC2656BCUFD-L16 4 GND DC1397B-B Mid Scale 2 DC1397B-A C11 1.0uF opt. JP2 U1 4 ASSEMBLY TYPE ADCIN * 6 VOUT GND VIN 3 5 GND C1 0.1uF opt. 2 V+ A2 A1 A0 R7 5.1K 6 7 3 2 1 U6 24LC025-I/ST CUSTOMER NOTICE CONTRACT NO. LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A APPROVALS CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO DRAWN J. Wu VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL ENGINEER APPLICATION. COMPONENT SUBSTITUTION AND PRINTED L. Chen CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT CHECKED PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. DATE 2/21/08 TECHNOLOGY TITLE 2/21/08 LTC2656BCUFD 12/16-BIT, OCTAL DAC W/REFERENCE SIZE CAGE CODE APPROVED THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. Thursday, October 10, 2013 SCALE: 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 DWG NO REV DC1397B FILENAME: SHEET 1 1 OF 1