4 3 2 1 ECO REV __ 2 U3 4 2 4 R3 U15 +8V CLK 33 OHM 3 2 3 4 SHDN 1 GND VIN OUTF GND OUTS GND GND 8 6 5 10 OHMS C45 0.01uF 25V NP0 V+ - 7 8 C8 OPT 2 C6 OPT Q 3 5 8 R15 7 4 2 CNVST_33 33 OHM - 7 C10 10uF R2 20K VREF 0.8VREF 2 U6 NC7SZ66P5X R56 10 OHMS 1 2 3 4 8 7 6 5 C55 OPT IN+ U1 V- 7 8 CNV SCK LTC2378CMS-20 5 IN- SDO BUSY RDL/SDI 9 C15 R38 33 11 B SCK SDO A 1 OE 4 4 2 J3-2 R13 1K C16 0.1uF GND BUSY 12 U9 NC7SZ04P5X 0.1uF 2 13 14 +3.3V 5 4 5 VCC 3 6 C4 0.1uF 25V FS C 3 2 LT1637 C13 +3.3V 0.1uF R17 2K 3 TP5 RDL R7 1K DC590_DETECT B U4 OPT R9 10 OHMS NOTE: UNLESS OTHERWISE SPECIFIED 6 1 5 4 OPT Q CNV REF REF/DGCL + LT5400-4 9 3 U2 R50 10 OHMS 3 6 16 10 C52 4.7uF 2 RP1 TP9 VCM C12 0.1uF VDD R1 20K C5 OPT + PR JP2 1210 C48 0.1uF C2 0.1uF 25V 1 5 4 R40 499 C47 10uF C46 0.1uF 1 10K V+ C53 0.01uF 25V NP0 C20 47uF X7R 10V CHAIN R5 V- R39 499 3 VCC R51 33 OHM +2.5V 15 C51 OPT VREF R12 C18 0.1uF D C49 0.1uF GND GND GND GND R44 0 OHM C9 OPT R45 OPT J2 (OPTION) BNC AIN+/- 10V 0.1uF VREF C3 0.1uF 25V B CP CLR E3 C39 10uF 8 C - R8 LT1468 1 5 4 C7 3300pF NP0 2 U18 6 GND C57 2 D +3.3V R37 0 OHM VREF 7 8 0 OHM + 6 C17 2.2uF +3.3V 3 4 +3.3V 7 V+ C1 0.1uF 25V R11 10-10-2013 NC7SVU04P5X +3.3V LTC6655-5.0 1 C11 0.1uF BNC J4 AIN+ +/- 10V DATE G.HOOVER U10 NL17SZ74 OVDD R6 1K R49 49.9 1206 U8 NC7SZ04P5X APPROVED R55 33 OHM U5 C58 0.1uF NC7SVU04P5X 1 R48 1K DESCRIPTION PRODUCTION 1 3 C59 0.1uF 5 J1 CLK IN 64MHz MAX 3.3VPP +3.3V 3 D C19 0.1uF BNC +3.3V 5 +3.3V REVISION HISTORY 5 5 1. ALL RESISTORS AND CAPACITORS ARE 0603 PACKAGE. R46 OPT C50 OPT R10 0 OHM VR47 OPT GND A GND GND TP7 TP6 TP4 CUSTOMER NOTICE 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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 3 2 APPROVALS PCB DES. M.HAWKINS APP ENG. G. HOOVER SCALE = NONE TECHNOLOGY 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 2ppm INL, DRIVER + 20-BIT SAR ADC IC NO. REV. SIZE LTC2378CMS-20 N/A 1 DEMO CIRCUIT 2135A DATE: 10-10-2013 SHEET 1 1 OF 2 A 4 IO7 IO8 IO15 IO16 IO17 IO18 IO19 IO20 IO21 R69 33 5 R70 33 6 R34 33 7 R35 33 CLKOUT 28 IO28 DB16 IO30 DB18 IO33 DB19 IO34 8 CNVST_33 IO58 36 BUSY IO61 37 SCK IO66 IO67 IO68 IO69 41 IO41 21 IO57 RDL R14 33 40 IO40 20 SCK 35 39 IO39 19 IO56 38 IO38 18 SDO 34 IO37 17 IO55 33 IO36 16 IO54 30 IO35 15 IO53 29 IO29 DB17 IO52 IO70 42 IO42 47 IO47 IO72 48 IO48 R60 10K 0402 49 IO49 50 IO50 IO71 +3.3V IO73 IO74 IO75 52 IO77 53 88 IO88 R71 33 R72 33 R73 33 R61 33 89 IO89 DB0 90 IO90 DB1 IO92 IO95 DB2 IO96 R63 R64 33 R65 33 R66 33 R67 33 R68 DB5 DB6 DB7 DB8 DB19 DB9 33 92 95 R41 33 96 R18 33 98 DB17 IO98 99 IO99 100 IO100 33 R30 33 DB12 DB15 DB13 DB13 DB14 DB11 DB15 64 10 9 (NC) 43 8 7 (NC) 44 6 5 22 4 3 23 2 1 24 25 C32 0.1uF 0402 C33 0.1uF 0402 C34 0.1uF 0402 C35 0.1uF 0402 C36 0.1uF 0402 SHDN BYP 2 C23 0.01uF 25V E5 +1.8V C24 10uF 6.3V D 4 +3.3V 1 OUT IN 2 SEN 5 SHDN 25V 4 BYP JP3 VCCI0 R25 1.69K C27 0.01uF E1 +3.3V C26 10uF 6.3V +2.5V 2 +3.3V R26 1.54K R27 2.8K +3.3V U14 +16V/+18V 8 OUT IN SEN C28 1.0uF 25V 5 SHDN C +2.5V LT1763CS8-2.5 R33 4.99K BYP E2 1 +2.5V 2 C30 0.01uF 25V R19 1K C29 10uF 6.3V 4 U16 +16V/+18V TMS V+ LT1763CS8 OUT IN SEN C41 1.0uF 25V TDI TCK 5 TDO J3-2 VCCINT VCCINT VCCIO1 VCCIO1 VCCIO1 VCCIO2 VCCIO2 VCCIO2 GND GND GND GND GND GND GND GND SCK 1 2 3 4 TP2 5 6 TP3 7 8 9 10 11 12 13 14 C14 0.1uF U7 SCK R53 4.99K R54 4.99K SHDN R57 4.99K CNV CNV SCL SDA WP A2 A1 A0 6 5 7 3 2 1 WP 2 JP1 BYP EEPROM -16V / -18V 2 4 C40 0.01uF 25V R42 11.5K V+ C42 10uF 25V 1206 R43 1K B LT1964ES5-SD 2 E8 PROG C44 1.0uF 25V 24LC024-I /ST J3 3 1 IN V- OUT SHDN GND ADJ 5 R28 11.5K 4 U19 E9 V- C43 10uF 25V 1206 R29 1K DC590 +16V/+18V E4 1 U17 -16V/-18V 3 10 11 32 46 60 93 65 79 +8V LT1763CS8 8 OUT IN SEN SHDN 3 6 7 5 MH4 BYP 1 2 4 C56 0.01uF 25V R4 1K STANDOFFS 4 PLCS 5 SEN LT1763CS8 8 C38 0.1uF 0402 MH3 5 DEV_CLRN A MH2 IN C22 1.0uF 25V C25 1.0uF 25V DEV_OE C60 1.0uF 25V MH1 OUT U13 8 R32 2K EPM240GT100C5N C37 0.1uF 0402 C21 22uF 25V 1210 E7 +16V/+18V 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 GCLK3 GND GND GND C31 0.1uF 0402 GND 8 1 GCLK2 U11F 13 63 9 31 45 59 80 94 DB0 GCLK1 TP1 +3.3V DB2 DB1 GCLK0 SDO +1.8V DB4 DB3 R24 1K B DB6 DB5 E6 +16V/+18V +1.8V LT1763CS8-1.8 3 6 7 R59 1K 0402 DB8 U12 +16V/+18V 8 JTAG 62 DB10 DB7 VCC J5 R22 1K 0402 DB12 VSS R21 10K 14 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 DB14 4 +3.3V 12 CLK CLK2 DB9 EPM240GT100C5N R20 1K 0402 DB16 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 DB11 U11E +3.3V DB18 DB10 CLKOUT 33 R58 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 DB4 33 R74 97 IO97 DB3 33 91 IO91 R16 300 0402 C 87 IO87 67 75 86 IO86 66 74 85 IO85 61 73 84 IO84 58 72 83 IO83 57 71 82 IO82 56 70 81 IO81 55 69 78 IO78 54 68 77 R62 1 IO6 4 IO27 76 IO76 3 IO5 R31 33 27 51 GND GND GND D 3 CLK2 IO51 3 6 7 IO4 R36 33 DC590_DETECT GND GND GND IO3 2 26 IO26 CLKOUT TP8 P1 EDGE-CON-100 GND GND GND IO2 1 U11D EPM240GT100C5N 3 6 7 IO1 U11C EPM240GT100C5N 1 GND GND GND U11B EPM240GT100C5N 2 1 U11A EPM240GT100C5N 3 3 6 7 5 R23 5.62K C54 10uF 16V 0805 CUSTOMER NOTICE 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. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 4 3 2 APPROVALS PCB DES. M.HAWKINS APP ENG. G. HOOVER SCALE = NONE TECHNOLOGY 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 2ppm INL, DRIVER + 20-BIT SAR ADC IC NO. REV. SIZE LTC2378CMS-20 N/A 1 DEMO CIRCUIT 2135A DATE: 10-10-2013 SHEET 2 1 OF 2 A