1 -10 10 1 0 0 -2.5 2.5 1 0 1 -2.5 11 SCK 10 SCLR 12 RCK 13 G R14 7.5 100 C24 100pF D2 BAT54C 11 SCK 10 SCLR 12 RCK 13 G R15 JP1 G G G G G G G J1 HD2X7-079-MOLEX V+ 12 5V CS 64 SCK/SCL MOSI/SDA 75 MISO GND GND GND EEVCC EESDA EESCL EEGND AUX 13 8 3 A 10 9 11 12 14 100 C25 100pF 16 VCC Q'H QH QG QF QE 8 GND QD QC 14 SER QB QA CS/ CLK SDI SDO C23 0.1uF R6 1K R7 1K R8 100 C21 0.1uF VCC C22 0.1uF R9 4.99K U11 24LC025-I /ST 1 A0 2 A1 VCC 8 WP 7 3 A2 4 VSS R10 20K R11 R12 4.99K 4.99K R13 20K 2 4 U10 NC7SZ14P5X SCL 6 SDA 5 11 SCK 10 SCLR 1 52 S2 47 S1 S0 16 A2 17 A1 18 A0 R4 4.99K 4 D V+ C9 0805 0.1uF VOSA IOUT1B 56 IOUT2B 46 2 - 3 + VOSB VOSB 57 U5A LT1469CS8 1 C12 0.1uF 0805 E5 E6 OUTB GND V- C13 30pF IOUT1C 27 IOUT2C 34 VOSC VOSC 26 IOUT1D 24 IOUT2D 14 6 - 5 + VOSD VOSD 25 E8 7 U5B LT1469CS8 C14 30pF E9 C OUTC GND V+ C15 0805 0.1uF C17 0.01uF UPD D_/S WR_ CLR_ MSPAN 6 - 5 + 3 2 1 NC 2 VIN C19 10uF,25V 3 NC 1206 4 GND VOUT 6 TRIM 5 C20 10uF,25V 1206 LT1236ACS8-5 JP6 VOSA 3 2 1 EXT GND HD1X3-079 12 RCK 13 G E15 VOSA VOSA JP2 REF2 REF1 VCC 1 2 EXT 3 4 5 6 5V HD2X3-079 NC 8 NC 7 JP7 VOSB 3 2 1 EXT GND HD1X3-079 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 CIRUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. 3 REF1 JP5 VCC REF JP8 VOSC 3 2 1 EXT GND HD1X3-079 APPROVALS TITLE: APPROVED: DESIGNER: KIM T. SIZE A DATE: 2 E11 GND 0805 VCC JP3 1 6 5 4 3 S1 2 1 0 HD2X3-079 S2 E17 VOSC VOSC TECHNOLOGY DRAWN: ENGINEER: MARK T. E10 OUTD 1 C18 0.1uF MANUAL SPAN CONTROL E13 REF1 CONTRACT NO. CHECKED: + B S0 JP4 5 1 3 MSPAN 1 0 HD2X3-079 6 4 2 REG HD1X3-079 5V E16 VOSB VOSB E12 REF2 E14 VCC 1 2 3 - 3 V- REF2 D3 BAT54C 2 U7A LT1469CS8 7 U7B LT1469CS8 U8 THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 IOUT1A 59 IOUT2A 2 VOSA 58 U1 LTC2755CUP-16 R3 4.99K 1 9 7 6 5 4 3 2 1 15 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 DX1 DX0 READ V+ R16 U9 74VHC595MTC S2 S1 S0 R5 4.99K 12 RCK 13 G 100 4 5 6 7 8 9 10 11 12 36 37 38 39 40 41 42 43 44 R2 4.99K 11 SCK 10 SCLR D_/S READ WR_ CLR_ MSPAN UPD C26 100pF 5V U6 74VHC595MTC D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 DX1 DX0 A2 A1 A0 R1 4.99K 16 VCC Q'H 9 QH 7 C16 QG 65 0.1uF QF QE 43 8 GND QD QC 21 14 SER QB QA 15 5 B G D15 D13 D11 D9 D7 D5 D3 D1 DX1 S2 S1 A2 A0 3 S0 A1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 HD2X20-100 GND 8 PARALLEL INTERFACE OUTA C8 30pF 8 VC D14 D12 D10 D8 D6 D4 D2 D0 DX0 U4 74VHC595MTC 16 VCC Q'H 9 QH 7 C11 QG 65 0.1uF QF QE 43 8 GND QD QC 21 14 SER QB QA 15 C10 10uF,25V 1206 8 1 E2 4 0 U2B LT1469CS8 REF1 8 5 E1 7 4 -5 + 8 0 - 5 4 1 6 4 0 RFBA 60 10 4 0 REFA 62 ROFSA 61 1 RIN2 RCOM2 REFC ROFSC RFBC REFD ROFSD RFBD 0 C6 0805 0.01uF V- 32 31 30 29 28 21 22 23 0 C5 VCC 0.1uF 1 C4 0.1uF + 4 5 - REFB 53 ROFSB 54 RFBB 55 0 2 1 E7 0 C7 10uF,25V 1206 5V AMP V- 0 3 C2 30pF 0805 GND GND GND GND GND GND 1 E4 3 GND D1 BAT54C 0 2 E3 3 AMP V+ V+ SPAN 1 V+ C1 0.1uF 65 19 3 13 35 45 D FOR JP3 AND JP4 S2 S1 S0 U2A LT1469CS8 2 16 VCC Q'H 9 QH 7 C3 QG 65 0.1uF QF QE 43 8 GND QD QC 21 14 SER QB QA 15 RIN1 64 RCOM1 63 2. INSTALL SHUNTS ON JUMPERS AS SHOWN. U3 74VHC595MTC VCC VDD 15 1. ALL RESISTORS ARE IN OHMS, 0402. ALL CAPACITORS ARE IN MICROFARADS, 0402. 2 D_/S READ UPD WR_ CLR_ MSPAN NOTES: UNLESS OTHERWISE SPECIFIED 3 8 4 48 49 50 51 20 33 5 JP9 VOSD 3 EXT 2 1 GND HD1X3-079 VOSD E18 VOSD 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 LTC Confidential-For Customer Use Only QUAD, PARALLEL, IOUT, 16-BIT DAC DWG NO. DC1112A-1 * LTC2755CUP-16 Tuesday, October 02, 2007 SHEET 1 1 REV A-1 OF 1 A