5 4 3 2 U2 LT1236ACS8-5 NOTES: UNLESS OTHERWISE SPECIFIED 1 10 ADCINB 11 ADCINA 3 C12 0.1UF VCC 2 INT-EXT/ 3 R8 0 0805 R11 OPT 0 0805 D2 BAT54S 1 1 R6 10K 1 I1 2 GND FO R7 51 R12 0 0805 3 MUXOUTB 26 MUXOUTA 27 18 -INB 17 OUTB 4 C14 0.1UF R5 100 VCC 8 WP 7 C11 0.1UF 3 A2 SCL 6 4 VSS SDA 5 R2 4.99K 1% R3 4.99K 1% 10 EEVCC 9 EESDA R4 4.99K 1% 11 EESCL 12 EEGND +INA +INB 19 +INB VCC C13 0.1UF JP8 OPT C15 0.1UF 2 D 1 CP R13 10K U5 NL17SZ74US Q 5 Q 3 C 14 NC MUXOUTA R10 0 0805 +INA 25 B 1 A0 2 A1 MUXOUTB R9 0 0805 12 OUTA 13 -INA S 6 VCC 5 Z 4 3 I0 U3 24LC025 VCC GND 2 28 COM D1 BAT54S U4 NC7SZ157P6X OPT J2 VCC 8 PR 7 VCC C BUSY FO GND COM 5 MISO 7 MOSI GND E7 BUSY 2 FO 34 8 CH2 9 CH3 OPT 3 CH3 R1 MISO MOSI 8 CH2 E6 SDO 36 SDI 33 1 V+ 2 5V 13 E5 6 CH0 7 CH1 J1 HD2X7-079-MOLEX 6 CS 4 SCK SCK CLR COM CH1 0603 0603 CS CS/ 35 SCK 1 C7 VIN 4.7UF,10V VCC C8 4.7UF,10V 2 3 4 5 CH3 CH0 E4 U1 LTC2442CG 24 CH2 30 REF+ 31 REF- REF- E3 V+ GND CH1 REF+ GND CH0 C10 0.01UF D GND C9 4.7UF,10V 0603 2. INSTALL SHUNTS ON JP1-JP7 PIN 1 AND 2. C4 0.1UF VIN JP4 TRIG. MODE TRIG. NORMAL E16 VIN VCC E8 VCC E9 GND 6 E2 VCC 32 REF- C6 0.01UF C3 0.01UF 4 C5 4.7UF,10V 0603 V+ MOSI E1 C2 4.7UF,10V 0603 GND REF+ VCC MISO D VCC CS EXT JP2 REFEXT GND JP3 COM EXT GND 1. ALL RESISTORS ARE IN OHMS, 0402. ALL CAPACITORS ARE IN MICROFARADS, 0402. SCK VOUT 6 TRIM 5 V- 3 NC C1 0.1UF 4 GND JP1 REF+ 5V V+ 21 NC 8 NC 7 VCC 29 1 NC 2 VIN 5 VIN 1 B VU6 LTC1983ES6-5 VCC C16 4.7UF,10V 0603 C17 4.7UF,10V 0603 -5V -5V C19 2.2UF,10V 0805 C20 2.2UF,10V 0805 D3 BAT54S 2 1 +10V E15 +10V C21 4.7UF,10V 0603 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 CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. CONTRACT NO. APPROVALS 4 3 TECHNOLOGY DRAWN: TITLE: CHECKED: APPROVED: ENGINEER: MARK T. DESIGNER: KIM T. THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 E12 GND JP7 V- E13 V-5V CUSTOMER NOTICE A V+ E10 V+ E14 GND 3 OFF 0805 +10V VCC GND C18 2.2UF,10V JP5 AMP SUPPLY ON +10V VCC E11 -5V 1 VCC VOUT 2 6 SHDN GND 5 3 C+ C- 4 JP6 V+ 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only SCHEMATIC 4-CHANNEL, HIGH SPEED, 24-BIT ADC WITH BUFFER SIZE A DATE: 2 V- DWG NO. REV DC979A-LTC2442CG Monday, September 26, 2005 SHEET 1 A 1 OF 1 A