5 4 3 2 1 REVISION HISTORY ECO C4 OPT 50V AIN4- U1 LTC23XX D VCCIO C7 0.1uF 5 2 REF C12 2.2uF INT VIN VOUT_S GND GND GND REFBUF REFIN CNV SDI SDO7 SDO-/SDO6 SDO+/SDO5 SCKO-/SDO4 SCKO+/SCKO SCKI-/SCKI SCKI+/SDO3 SDI-/SDO2 SDI+/SDO1 SDO0 BUSY CSL LVDS/CMOSL PD 24 37 36 35 34 33 32 29 28 27 26 25 38 39 23 22 3 D Q 4 VCCIO 5 C16 0.1uF 7 4 2 NL17SZ74 R8 33 R9 0 CSB U5 3 Q C13 1uF R6 33 8 U4 2 JP1 R21 1k PR 1 EXT R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 CLR 4 1 2 3 5 SHDN VOUT_F VCC OE 6 GND GND GND 7 V+ CP 5 1 R7 OPT 8 6 21 19 31 OVDD 16 17 45 VCC VEE VEE * 46 44 41 20 18 15 30 AIN4+ VDD VDD VDDL 42 43 40 AIN3+ AIN0AIN0+ AIN1AIN1+ AIN2AIN2+ AIN3AIN3+ AIN4AIN4+ AIN5AIN5+ AIN6AIN6+ AIN7AIN7+ GND GND GND GND GND GND OGND 13 14 11 12 9 10 7 8 5 6 3 4 1 2 47 48 NC7SZ04P5X 5 C11 47uF 10V 1210 X7R LTC6655BHMS8-5 5V REFBUF VDD 4 U7 3 REFBUF E1 C9 0.1uF 50V 1 VDDL 04-02-15 U3 NC7SZ04P5X VCCIO C15 0.1uF 50V AIN3- C VCC DATE GUY H. CLKIN C6 0.1uF C14 0.1uF 50V AIN2+ U2 R5 1k R3 33 4 A C10 2.2uF AIN2- 2 VCC C8 0.1uF 50V AIN1+ R4 49.9 1206 R2 33 4 VCCIO C5 0.1uF 50V AIN1- BNC 2 NC7SZ04P5X WRIN 3 U6 2 B AIN0+ C3 0.1uF APPROVED PRODUCTION C2 0.1uF 3 VEE D J1 CLK 100MHz MAX 2.5VPP R1 1k DESCRIPTION 2 VCCIO C1 0.1uF 3 AIN0- VCCIO 5 VCCIO REV NC7SZ66P5X 33 33 33 33 33 33 33 33 33 33 33 CNV SDI SDO7 SDO- /SDO6 SDO+ /SDO5 SCKO- /SDO4 SCKO+ /SCKO SCKI- /SCKI SCKI+/SDO3 SDI- /SDO2 SDI+ /SDO1 SDO0 BUSY CNV SDI SDO7 SDO-/SDO6 SDO+/SDO5 SCKO-/SDO4 SCKO+/SCKO SCKI-/SCKI SCKI+/SDO3 SDI-/SDO2 SDI+/SDO1 SDO0 BUSY LVDS/ CMOSL LVDS/CMOSL R22 1k C SDA SCL AIN5- U8 R23 AIN5+ VCCIO AIN6- C17 0.1uF 0402 1 2 3 4 5 6 7 8 9 10 INTL SCL NC SDA VDD A0 A1 NC A2 P0 20 19 18 17 16 15 14 13 12 11 P7 P6 NC P5 P4 VSS P3 NC P2 P1 OPT WRIN 0402 X 8PLCS PCF8574TS WRIN2 R24 R25 33 33 WRIN SDI_IN WRIN SDI_IN R26 R27 33 33 SCK_IN CNV_IN SCK_IN CNV_IN R28 33 LVDS /CMOSLIN LVDS/CMOSLIN R29 R30 33 33 WRIN2 AUX1 WRIN2 AUX1 R31 33 AUX2 AIN6+ B B AUX0 SCK_IN2 VCCIO C19 0.1uF WRIN2 2 4 1 LVDS/CMOSLIN OE 4 U9 SDI 2 B NC7SZ66P5X GND A 1 SDI_IN OE 4 U10 SCKI-/SCKI VCC R32 0 2 B NC7SZ66P5X VCC A 1 SCK_IN OE 4 U11 CNV 2 B NC7SZ66P5X GND GND 3 R33 33 0402 VCC A 3 NC7SZ04P5X GND 0402 A 1 CNV_IN OE 4 U12 NC7SZ66P5X WRIN2L WRIN2L 3 NOTES: UNLESS OTHERWISE SPECIFIED U13 VCC LVDS/CMOSL 2 B 3 5 VCCIO C22 0.1uF 0402 VCCIO C21 0.1uF 5 5 0402 5 0402 AIN7+ VCCIO C20 0.1uF 5 VCCIO C18 0.1uF 3 AIN7- 1. ALL RESISTORS AND CAPACITORS ON THIS PAGE ARE 0603. A * ASSY -A -B -C -D -E -F U1 LTC2348-18 LTC2347-18 LTC2343-18 LTC2348-16 LTC2347-16 LTC2343-16 SUFFIX 48-18 47-18 43-18 48-16 47-16 43-16 -Bit 18 18 18 16 16 16 Ksps 200 400 600 200 400 600 -CHANNEL 8 4 2 8 4 2 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 PCB DES. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. 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 APPROVALS 4 3 2 TECHNOLOGY KIM T. GUY H. TITLE: SCHEMATIC 8/4/2-CHANNEL, SOFTSPAN, HIGH SPEED, SERIAL, SAR, ADC SIZE B SCALE = NONE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only DATE: IC NO. LTC23XXILX FAMILY DEMO CIRCUIT 2094A 04/02/2015, 10:17 AM REV. 2 SHEET 1 1 OF 4 A 5 4 3 2 1 U14 U15 +16V/+18V GND 8 E6 C24 47uF 25V 7343 TANT C25 1uF 25V IN OUT SEN 5 SHDN -16V/-18V V+ E3 GND GND GND +16V/+18V LT1964ES5-SD LT1763CS8 BYP E4 1 C26 0.01uF 2 R35 5.62k C29 10uF 25V 4 D -16V/-18V V+ 1 E5 2 C27 10uF 25V C28 1uF 25V 3 GND OUT E2 5 R34 11.5k IN SHDN ADJ 4 C23 VEE 10uF 25V VEE R36 1k D 3 6 7 R37 1k U16 LT1763CS8 8 IN OUT 5 SHDN GND GND GND SEN BYP E7 C31 0.01uF 2 R38 11.5k VCC C32 10uF 25V 4 R39 1k 3 6 7 C30 1uF 25V VCC 1 U17 LT1763CS8 8 OUT SEN 5 SHDN BYP E8 C34 0.01uF 2 R40 1.07k 4 R41 1k 3 6 7 C IN GND GND GND C33 1uF 25V VCCIO 1 1 2 3 R42 1.58k VCCIO +2.5V C35 10uF 25V VCCIO C +3.3V JP2 U18 LT1763CS8 8 IN OUT 5 SHDN GND GND GND SEN BYP E9 C37 0.01uF 2 R43 3.09k C38 10uF 25V 4 VDD R44 1k 3 6 7 C36 1uF 25V VDD 1 U19 LT3021ES8-1.2 AGND SHDN 6 5 OUT GND C39 3.3uF 25V B IN +1.2V SEN E10 2 VCCINT 3 C40 10uF 25V +1.2V B 4 8 U20 LT1763CS8-2.5 8 OUT 5 SHDN GND GND GND SEN BYP E11 C42 0.01uF 2 C43 10uF 25V 4 +2.5V NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS AND CAPACITORS ON THIS PAGE ARE 0603. 3 6 7 C41 1uF 25V IN +2.5V 1 U21 LT1763CS8 8 OUT SEN 5 SHDN CUSTOMER NOTICE +3V BYP E12 1 C45 0.01uF 2 R45 1.43k 4 C46 10uF 25V +3V THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 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. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. R46 1k 3 6 7 C44 1uF 25V IN GND GND GND A 3 2 TECHNOLOGY KIM T. GUY H. TITLE: SCHEMATIC 8/4/2-CHANNEL, SOFTSPAN, HIGH SPEED, SERIAL, SAR, ADC SIZE B SCALE = NONE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only DATE: IC NO. LTC23XXILX FAMILY DEMO CIRCUIT 2094A 03/12/2015, 11:32 AM REV. 2 SHEET 2 1 OF 4 A 5 4 U22B U22C IO1 IO2 IO3 IO4 IO5_VREF1 IO6_DIFFL4P IO7_DIFFL4N CLK0 CLK1 BANK2 1 2 3 4 7 10 11 22 23 AUX0 AUX1 WRIN2 LVDS/CMOSLIN 2 U22D BANK1 D 3 CLK2 CLK3 IO1 IO2 IO3_VREF2 IO4_RUP1 IO5_RDN1 IO6 R52 33 CLKIN BUSY SDI R49 33 SDO7 IO1_DIFFIOB1P IO2_DIFFIOB1N IO3 IO4 IO5 IO6_VREF3 IO7_DIFFIOB9P IO8_DIFFIOB9N IO9 IO10_DIFFIOB11P IO11_DIFFIOB11N VCCIO 3 2 1 I/O LVDS P1 U22E SDO-/SDO6 BANK3 24 25 28 30 31 32 33 34 1 R47 0 BANK4 R50 OPT 38 39 42 43 44 46 49 50 51 52 53 54 55 58 59 60 64 65 66 67 68 69 70 71 72 IO1_DIFFIOB12P IO2_DIFFIOB12N IO3 IO4_DIFFIOB16P IO5_DIFFIOB16N IO6 IO7_VREF4 IO8_RUP2 IO9_RDN2 IO10 IO11 IO12_DIFFIOB21P IO13_DIFFIOB21N IO14 SDO+/SDO5 SCKO-/SDO4 R54 OPT SCKO+/SCKO CMOS SCKI-/SCKI R48 0 R53 OPT VCCIO U22F IO1 IO2 IO3 IO4_RUP3 IO4_RDN3 IO5 IO6_VREF5 IO7 IO8_DIFFIOR8N IO9_DIFFIOR8P CLK7_DIFFCLK3N CLK6_DIFFCLK3P C R61 [2] CYCLONE3-EP3C5E144 U22G U22H U22I R60 10k BANK5 73 74 75 76 77 79 80 83 84 85 88 89 R59 10k CYCLONE3-EP3C5E144 BANK6 ID R65 R67 33 33 CLK5_DIFFCLK2N CLK4_DIFFCLK2P IO1 IO2 IO3_VREF6 IO4 SDO0 CSB LVDS/CMOSL CNV_IN SCK_IN SDI_IN WRIN BANK7 90 91 100 104 105 106 D9 D8 SDI-/SDO2 R58 0 R56 OPT R57 OPT D7 D6 D5 D4 D3 D2 CNVCLK R63 R64 R66 R68 33 33 33 33 IO1 IO2 IO3 IO4 IO5_RUP4 IO6_RDN4 IO7_VREF7 IO8_DIFFIOT16N IO9_DIFFIOT16P IO10 IO11 IO12_DIFFIOT12N IO13_DIFFIOT12P SS0 SS1 SS2 A0 CNVCLK SYNC D1 D0 BANK8 110 111 112 113 114 115 119 120 121 124 125 126 127 R62 R70 33 33 A1 A2 R74 R76 R78 R80 R82 R84 R86 R88 R90 33 33 33 33 33 33 33 33 33 IDOUT D0 D1 SYNC CNVCLK D2 D3 D4 D5 128 129 132 133 135 136 137 138 141 142 143 144 IO1_DIFFIOT11N IO2_DIFFIOT11P IO3_DIFFIOT10N IO4_DIFFIOT10P IO5 IO6_VREF8 IO7 IO8 IO9 IO10 IO11_DIFFIOT01N IO12_DIFFIOT01P R69 R71 R72 R73 R75 R77 R79 R81 R83 R85 R87 R89 D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 33 33 33 33 33 33 33 33 33 33 33 33 IDOUT A2 A1 A0 SS2 SS1 SS0 +3V 2 4 6 8 10 VCCIO CONFIG VCCIO C58 0.1uF C59 0.1uF C60 0.1uF C61 0.1uF C62 0.1uF C63 0.1uF C64 0.1uF C65 0.1uF C66 0.1uF C68 0.1uF C69 0.1uF +2.5V C70 47uF 0805 CYCLONE3-EP3C5E144 C71 4.7uF 0603 C72 C73 0.01uF 0.1uF C74 1nF C75 22nF C76 22nF C77 22nF C78 4.7nF + C87 C88 470uF 4.7uF 7343 0603 C83 C89 C84 0.01uF 0.01uF 0.1uF 6 8 9 12 13 14 15 16 18 20 21 86 87 92 94 96 97 98 99 101 103 CYCLONE3-EP3C5E144 +1.2V L1 BLM31PG391SN1L VCCD_PLL A C67 0.1uF IO1_DATA1 IO2_FLASH_NCE N_STATUS DCLK IO3_DATA0 NCONFIG TDI TCK TMS TDO NCE IO4_DEV_OE IO5_DEV_CLRN CONF_DONE MSEL0 MSEL1 MSEL2 IO6_INIT_DONE IO7_CRC_ERROR IO8_NCEO IO9_CLKUSR C90 0.1uF C85 0.1uF C91 0.1uF C92 0.1uF C86 2.2nF C93 4.7nF 1 2 3 4 8 VCC +3V 8 7 6 5 VCC VCC DCLK ASDI +3V C56 0.1uF R93 4.99k 0603 C57 0.1uF R94 4.99k 0603 SCL SDA WP A2 A1 A0 6 5 7 3 2 1 SCL SDA EEPROM 1 2 3 WP PROG B JP4 J4 HD2X7-079-MOLEX V+ 5V +2.5V R101 10k VCCIO R102 10k R103 10k +3V +3V +3V +3V R104 1k D1 BAT54WS C79 10pF JTAG 2 4 6 8 10 1 3 5 7 9 TCK TDO TMS TDI HD2X5-100 NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS AND CAPACITORS ON THIS PAGE ARE 0402. 2. R61 IS O OHMS ON ASSEMBLY TYPES A,B,C,D AND OPTIONAL ON E,F,G,H. (SEE ASSY TABLE ON PAGE 4) 4 NCS DATA VCC GND TDI TCK TMS TDO NCE J3 5 EPCS4SI8 +3V R91 4.99k 0603 24LC024-I /ST GND C55 0.1uF VCCIO 4 C54 0.1uF U23 C 3 D2 BAT54WS D3 BAT54WS C80 10pF CS SCK/SCL MOSI/SDA MISO EEVCC EESDA EESCL EEGND AUX D4 BAT54WS C81 10pF CUSTOMER NOTICE C82 10pF 2 6 4 7 5 DC590/DC2026 CNV SCK_IN2 SDI SDO0 10 9 11 12 14 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. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. 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. 1 2 GND GND GND C53 0.1uF R95 10k R92 4.99k 0603 D 13 8 3 C52 0.1uF R100 10k 1 C51 0.1uF R99 10k 1 C50 0.1uF R98 10k 1 C49 0.1uF R97 10k 2 C48 0.1uF 5 29 45 61 78 102 116 134 17 26 40 47 56 62 81 93 117 122 130 139 35 107 37 109 R96 10k C47 0.1uF 0603 U24 1 B VCCINT VCCINT GND VCCINT GND VCCINT GNDA1 VCCINT GND VCCINT GND VCCINT GND VCCINT GND VCCIO1 GND VCCIO2 GND VCCIO3 GNDA2 VCCIO3 GND VCCIO4 GND VCCIO4 GND VCCIO5 GND VCCIO6 GND VCCIO7 VCCIO7 VCCIO8 VCCIO8 VCCA1 VCCA2 VCCD_PLL1 VCCD_PLL2 1 3 5 7 9 HD2X5-100 U22J 2 PWR 19 27 36 41 48 57 63 82 95 108 118 123 131 140 145 EDGE-CON-100 J2 +1.2V U22A FPGA PROGRAM ARRAY CYCLONE3-EP3C5E144 EEPROM CYCLONE3-EP3C5E144 2 CYCLONE3-EP3C5E144 2 CYCLONE3-EP3C5E144 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93 95 97 99 D11 D10 R55 0 SDI+/SDO1 CYCLONE3-EP3C5E144 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 98 100 D13 D12 VCCIO CYCLONE3-EP3C5E144 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 D15 D14 R51 OPT SCKI+/SDO3 JP3 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 D17 D16 TECHNOLOGY KIM T. GUY H. TITLE: SCHEMATIC 8/4/2-CHANNEL, SOFTSPAN, HIGH SPEED, SERIAL, SAR, ADC SIZE B SCALE = NONE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only DATE: IC NO. LTC23XXILX FAMILY DEMO CIRCUIT 2094A 03/12/2015, 11:32 AM REV. 2 SHEET 3 1 OF 4 A 3 4 5 6 7 8 J6 JP5 * AIN1 AIN2 6 - C104 * VEE AIN3 R111 * R113 * AIN4 R114 OPT AIN6 AIN7 VIN2 VIN1 * AIN1 BNC JP6 3 0603 C112 0805 OPT * 2 R129 R127 * * C116 OPT 5 C126 0805 OPT 0603 JP7 6 R131 0 - R137 OPT R141 OPT 8 3 C136 0805 OPT 0603 B JP8 2 8-CH 4-CH 2-CH ASSY * -A -B -C -D -E -F D R118 OPT C107 OPT AIN5- LT1355CS8 C111 270pF R126 100 1 AIN5+ - R128 OPT R130 0 C115 OPT C VCC C121 * R135 * AIN6 JP11 0603 * C124 OPT * R153 R155 0 C103 OPT 5 C127 0805 OPT 6 C119 OPT R132 0 AIN6- U28B R136 * + * * 7 - C123 C129 * R138 * R140 R143 OPT * AIN7 AIN3+ JP12 * C137 OPT 0603 3 C138 0805 OPT 2 C131 OPT R148 0 R147 OPT + C125 OPT R144 OPT C133 OPT R151 AIN6+ AIN7- U28A C135 R152 * * * 1 - R156 R154 * * C141 OPT AIN7+ B C139 OPT AIN7 AIN6 AIN5 AIN4 AIN3 AIN2 AIN1 AIN0 (JP12) (JP11) (JP10) (JP9) (JP8) (JP7) (JP6) (JP5) X X X U1 (PAGE 1) A 2 AIN4+ C117 OPT C134 * - R117 OPT * R150 1 C140 OPT * C113 OPT C114 0805 OPT AIN3- LT1355CS8 + * R116 0 + C130 OPT U26A 4 AIN3 0603 JP10 3 R142 OPT R146 0 R145 OPT R112 U27A VEE R139 0 C132 OPT R149 0 AIN1+ AIN2+ C128 0.1uF VEE C105 0.1uF R122 0 R121 OPT R125 0 AIN5 C122 270pF R134 100 7 * * C109 OPT AIN2- LT1355CS8 + - C118 OPT U26B 4 AIN2 8 R133 0 C120 0.1uF * * 1 VCC 6 C99 R110 7 VEE C110 R123 * - C C102 OPT AIN1- U25A + JP9 C101 0805 OPT AIN4- LT1355CS8 + C106 OPT R120 0 R119 OPT R124 0603 5 C95 OPT R106 0 U27B R115 OPT C108 OPT AIN5 AIN0+ 8 8 C100 0805 OPT AIN4 C97 0.1uF 4 AIN0 0603 * * 7 R109 0 C98 R108 * + 4 2 17 9 18 10 19 11 20 12 21 13 22 14 23 15 24 16 5 8 1 * AIN0 AIN0- U25B 8 R107 J7 4 BNC VCC C94 OPT R105 0 8 * AIN0 AIN1 AIN2 AIN3 AIN4 AIN5 AIN6 AIN7 VIN2 +/- 10.24V MAX C96 1 4 VCC 2 8 J5 HD3X8-100 D 3 4 VIN1 +/- 10.24V MAX 4 4 5 LTC2348-18 LTC2347-18 LTC2343-18 LTC2348-16 LTC2347-16 LTC2343-16 X X X X -CH C96,C104, C121,C129 8 4 2 8 4 2 5 0.1uF 0.1uF OPT 0.1uF 0.1uF OPT X C98, C135 270pF 270pF OPT 270pF 270pF OPT X X X X X X NOTES: UNLESS OTHERWISE SPECIFIED 1. ALL RESISTORS AND CAPACITORS ON THIS PAGE ARE 0402. R107,R124,R135,R151 (0603) R108, R110,R123, R111, R112,R127, C99,C110, JP5,JP6, R61 C123,C134 JP11,JP12 (PAGE 3) R113,R129,R140,R151,R156 (0402) R152 R136,R150 R154 R138,R153 270pF OPT OPT 270pF OPT OPT STUFF STUFF OPT STUFF STUFF OPT 0 0 0 OPT OPT OPT 0 0 OPT 0 0 OPT 4 100 100 OPT 100 100 OPT 100 OPT OPT 100 OPT OPT OPT OPT 0 OPT OPT 0 3 OPT 0 0 OPT 0 0 U25,U28 LT1355CS8 LT1355CS8 OPT LT1355CS8 LT1355CS8 OPT CUSTOMER NOTICE 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. VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. 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. 2 TECHNOLOGY KIM T. GUY H. TITLE: SCHEMATIC 8/4/2-CHANNEL, SOFTSPAN, HIGH SPEED, SERIAL, SAR, ADC SIZE B SCALE = NONE 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only DATE: IC NO. LTC23XXILX FAMILY DEMO CIRCUIT 2094A 04/02/2015, 10:19 AM REV. 2 SHEET 4 1 OF 4 A