5 4 3 2 1 REVISION HISTORY R7 ECO REV - 2 33 GND VOUT_S 6 4 GND 5 GND R6 OPT +3.3V 4 6 C5 10uf U4 NL17SZ74 GND C6 0.1uF CLR VCC 8 PR 7 C7 0.1uF 5 7 R8 33 4 D 2 DB17 DB16 C9 47uF 6.3V 0805 +3.3V +5V DB17 DB16 REF / SEL C19 JP3 CNV 0.1uF C32 OPT 6.3V AIN+ BNC R24 OPT C31 OPT C12 4.7uF 0805 R26 1K 8 SDO 14 SDO BUSY 11 BUSY ROL/SDI 12 RD U8 LTC2380CMS-16 LTC2378CMS-16 LTC2377CMS-16 LTC2376CMS-16 -F LTC2378CMS-18 1.6 1.0 -G LTC2377CMS-18 0.5 -H LTC2379CMS-18 LTC2376CMS-18 CHAIN BUSY A 1 OE 4 U6 NC7SZ04P5X 4 2 R22 2k C21 0.1uF 40 40 37 38 38 DB1 35 35 36 36 DB2 33 33 34 34 DB3 31 31 32 32 DB4 29 29 30 30 DB5 27 27 28 28 DB6 25 25 26 26 DB7 23 23 24 24 DB8 21 21 22 22 DB9 19 19 20 20 DB10 17 17 18 18 DB11 15 15 16 16 DB12 13 13 14 14 DB13 11 11 12 12 DB14 9 9 10 10 DB15 7 7 8 8 5 5 6 6 3 3 4 4 1 1 2 2 CLKOUT RD C MSPS 2.0 1.0 0.5 0.25 0.25 3201S-40G1 R20 1k B BITS 16 16 16 16 18 18 C28 0.1uF 9V-10V SDO 18 SDO 18 J5 DC590 1 3 5 7 9 11 13 2 4 6 8 10 12 14 SCK CNV SCL SDA WP 6 5 7 A2 A1 A0 3 2 1 SCK CNV R31 4.99k U10 24LC024-I/ST R32 4.99k R33 4.99k JP4 WP HD2X7-079-MOLEX PROG C33 OPT A NOTE: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS ARE IN OHMS, 0603. ALL CAPACITORS ARE IN MICROFARADS, 0603. 2. INSTALL SHUNTS AS SHOWN. A 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 R21 1k 39 37 1 GND ASSY -A -B -C -D -E SCK B 5 13 R30 1k C30 OPT * 2 3 SCK REF/SEL 7 REF 16 GND GND 10 GND IN- R29 0 0402 C29 3900pF NPO 1206 VDD 2 5 OVDD IN+ 9 8 C16 R5 0 4 CNV VCC EXT VCM R23 0 C27 3900pF NPO 1206 U7 NC7SZ66P5X C20 0.1uF VSS 0.01uF 0402 E2 J3 R28 35.7 R19 0 0402 6 5 OUT- C24 +5V B R25 OPT C26 3900pF NP0 1206 OUT+ 7 6 V- R27 1k C15 0.1uF R18 35.7 DC590_DETECT +3.3V TO CPLD 0.1uF 0805 39 DB0 4 C22 1uF C25 OPT 4 1 EXT VOCM IN- JP1 V+ 8 IN+ EXT 3 REF SHDN C23 OPT 6.3V VOCM E9 U9 LTC6362CMS8 VOCM C13 OPT R17 1k R12 0 2 R11 OPT R16 OPT * U8 LTC23XXCMS 3 BNC 15 AIN- 5 R15 1K +3.3V REF GND C18 0.1uF VCC C17 10uF 6.3V JP2 GND C14 OPT R10 0 C8 0.1uF C10 0.1uF PWR ON SHDN J2 J4 3 C +2.5V EN R14 1K C11 10uF 6.3V CNVST_33 FROM CPLD U5 NC7SVU04P5X R9 33 R13 1K 10-14-11 3 8 2 GND VIN VOUT_F 3 D SHDN 2 1 1 Q U2 NC7SVU04P5X C4 0.1uF 33 CP 5 U1 NC7SZ04P5X CLK 3 R3 1k DATE ERJON Q. 9V-10V R4 4 APPROVED E1 5 R1 49.9 1206 2 3 BNC 4 PRODUCTION FAB +3.3V EXT REF U3 LTC6655CHMS8-5 C3 0.1uF 5 2 3 D +3.3V C2 0.1uF R2 1k C1 0.1uF J1 CLK 100MHz Max 3.3Vpp +3.3V Q +3.3V DESCRIPTION 4 3 2 APPROVALS PCB DES. NC APP ENG. ERJON Q. 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 LTC6362 DRIVING 18 - BIT SAR ADC SIZE IC NO. N/A SCALE = NONE DATE: LTC6362CMS8 DEMO CIRCUIT1805A - A / H 10-14-11 SHEET 1 1 REV. 2 OF 2 IO51 51 IO76 76 IO26 27 IO52 52 IO77 77 DB3 DB4 IO2 2 DB12 IO27 IO3 3 DB13 IO4 4 DB14 IO28 28 IO53 53 IO78 78 DB5 IO29 29 IO54 54 IO81 81 IO5 5 IO6 6 DB15 CLKOUT IO30 30 IO55 55 IO82 82 IO33 33 SDO IO56 56 IO83 83 IO7 IO8 7 IO34 34 SCK IO57 57 IO84 84 8 IO35 35 RD IO58 58 IO85 85 IO15 15 IO16 16 IO36 36 61 IO86 86 37 BUSY SCK IO61 IO37 IO66 66 IO87 87 IO17 IO18 17 IO38 38 IO38 IO67 67 IO88 88 18 IO39 39 IO68 68 IO89 89 IO19 19 IO40 40 IO69 69 IO90 90 IO20 20 IO41 41 IO70 70 IO91 91 IO21 21 IO42 42 IO71 71 DB16 IO92 92 IO47 47 IO72 72 DB17 IO95 95 IO48 48 IO73 73 DB0 IO96 96 IO49 49 IO74 74 DB1 IO97 97 IO50 50 IO75 75 DB2 IO98 98 IO99 99 IO100 100 CNVST_33 IO21 DC590_DETECT R44 33 +3.3V R34 10k 0402 IO56 IO68 R35 300 OPT 0402 C 9V-10V E4 GND U11 LT1763CS8-1.8 9V-10V 8 C34 22uF 16V 1210 IN C35 1uF 16V 5 SHDN 0402 X 3 PLCS R39 10k J6 R36 1K R37 1K 62 R38 1K GCLK2 14 DB7 64 GCLK3 43 DEV_OE 8 7 44 DEV_CLRN 6 5 22 TMS 4 3 23 TDI 2 1 24 TCK 25 TDO JP2X5/100 R40 1k 0402 8 IN C38 1uF 16V DB8 5 DB9 SHDN 8 IN C41 1uF 16V 5 SHDN C47 0.1uF C48 0.1uF C49 0.1uF C50 0.1uF C51 0.1uF C52 0.1uF C53 0.1uF SEN 2 BYP 4 C39 0.01uF VCCIO +2.5V C40 10uF 6.3V +3.3V JP5 R43 1.54k C +2.5V OUT 1 SEN 2 BYP 4 E7 +2.5 V C43 10uF 6.3V C42 0.01uF IN 10 11 32 46 60 93 65 79 +5V OUT 1 SEN 2 BYP 4 +5 V C46 10uF 6.3V GND GND GND C45 0.01uF SHDN CUSTOMER NOTICE C54 0.1uF 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 E8 3 6 7 GND GND GND GND GND GND GND GND 0402 X 8 PLCS 5 E6 +3.3 V R42 1.69k U15 LT1763CS8-5 5 U13F EPM240T POWER A 1 B C44 1uF 16V VCCINT VCCINT VCCIO1 VCCIO1 VCCIO1 VCCIO2 VCCIO2 VCCIO2 +3.3V OUT U14 LT1763CS8-2.5 9V-10V 8 13 63 9 31 45 59 80 94 D R41 2.80k 9V-10V +1.8V 4 +1.8 V DB10 CNTRL +3.3V BYP E5 C37 10uF 6.3V C36 0.01uF U12 LT1763CS8 9V-10V GCLK1 9 SEN 2 IO86 GCLK0 10 JTAG B 12 CLK 1 DB6 U13E EPM240T +3.3V +1.8V OUT 3 6 7 DB11 26 1 3 6 7 IO1 1 E3 GND GND GND U13D EPM240T U13C EPM240T 2 3 6 7 D U13B EPM240T 3 GND GND GND U13A EPM240T 4 GND GND GND 5 3 2 APPROVALS PCB DES. NC APP ENG. ERJON Q. 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 LTC6362 DRIVING 18 - BIT SAR ADC SIZE IC NO. N/A SCALE = NONE DATE: REV. LTC6362CMS8 DEMO CIRCUIT 1805A - A / H 10-14-11 SHEET 2 1 2 OF 2 A