REVISION HISTORY This circuit is proprietary to Linear Technology and supplied for use with Linear Technology parts. Customer Notice: Linear Technology has made a best effort to design a circuit that meets customer-supplied specifications; however, it remains the customers 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 Applications Engineering for assistance. ECO REV - 0 DESCRIPTION DATE ! 1 06/02/06 VCC E1 C1 + (Opt) "B" Case E2 VEE CD1 0.1uF VCC CD2 VCC AINR16 0 Ohm (Opt) R13 24.9 1% R41 (Opt) R42 0 R17 (Opt) DGND 12 VCC 10 EN 11 VCC 6 VCC 9 0.1uF R14 (Opt) OUT2 5 VEE C9 R8 C4 R9 10.0 1% R11 L1 10.0 TBD 1% R12 C6 R35 AIN+ 10.0 1% R36 C7 10.0 1% L3 10.0 1% NC C8 0.1uF L2 TBD AIN- 10.0 C10 1% TBD 4 C34 J2 R38 10.0K 1% VEE 15 IN216 IN2+ 7 3 R10 (Opt) EN U1 LT6411CUD OUT1 8 VEE 4 0.1uF 13 IN1+ 14 IN1- VEE 2 C5 VEE R37 15.8K 1% 0.1uF R5 (Opt) (Opt) GND 470pF CD4 2 T1 ETC1-1TTR 5 1 R7 24.9 1% 2 3 1 R6 (Opt) 0 R40 VCC (Opt) VCC 5V JP1 ENABLE 1 DIS VEE E7 VEE(Opt) R18 (Opt) CD5 470pF CD6 0.1uF CD7 1uF CD8 0.1uF R19 0 Ohm + J1 AIN+ R3 (Opt) R39 C33 0.1uF CD3 3 R2 (Opt) R1 10 APPROVED <APPROVED> " C31 (Opt) "B" Case E8 VCC GND C:\ORCADWIN\CAPTURE\1057A\1057A_REV1.DSN APPROVALS DRAWN: Rudy Bautista ENGINEER: C.Pei APPROVED: Title Size CHECKED: DCxxxA_00.PCB 1630 McCARTHY BLVD www.linear.com MILPITAS, CA. 95035 LTC Confidential (408)432-1900 For Customer Use Only (408)434-0507 (FAX) xxxA_x.DSN Date: ADC Driver and ADC Document Number Rev Demo Circuit 1057A Sheet 1 1 of 2 OVDD C32 VDD R20 10 OVDD R25 (Opt) AIN- 2 C15 1uF 31 4 5 C20 1uF 6 VDD C24 J4 0.1uF R34 52.3 1% AIN+ AIN- A1 B1 A2 B2 A3 B3 A4 B4 A5 B5 A6 B6 A7 B7 19 OE 1 T/R GND1 7 8 9 D7 19 OVDD REFH2 OVDD 21 REFL1 OGND 20 3 2 3 OVDD 17 GND2 CLK 16 15 14 13 MSB 12 11 VCC 20 10 C19 0.1uF J3 18 OVDD C18 0.1uF 21 REFL2 GND CLK SHDN OE D0 D1 D2 D3 D4 33 9 10 11 12 13 14 15 16 U2 LTC2249CUH U4 74VCX245BQX VDD R43 10 OVDD U7 NC7SVU04P5X R30 R32 VCC 5 2 A 1 NC 120 C25 4.7pF VDD Y 4 3 GND 10 2 A0 3 A1 4 A2 5 A3 6 A4 7 A5 8 A6 9 A7 B0 18 17 B1 16 B2 15 B3 14 B4 13 B5 12 B6 11 B7 19 OE 1 T/R VCC 20 10 GND1 21 GND2 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 C28 1uF 1uF OVDD U8 NC7SV86P5X 30 32 33 34 35 36 37 38 39 40 R26 C22 OVDD C23 0.1uF U5 1 A0 2 A1 3 A2 4 VSS 0.1uF VCC 8 WP 7 R27 10K R29 (Opt) 0603 SCL 6 SDA 5 24LC025-I/ST C26 5 28 29 31 10K OVDD VCC 5 C27 LSB(14) TO DC718A 1 27 D6 18 D5 17 Y 4 3 GND B0 6 OF D13 D12 D11 D10 D9 23 D8 22 U6 NC7SVU04P5X 2 A 1 NC R31 5.1K MODE JP3 VDD A0 5 28 27 26 25 24 8 GND SHDN2 1 DIS 2 EN 3 CLK VCM SENSE 29 7 VDD C21 0.1uF X7R R28 5.1K 30 3 REFH1 C17 0.1uF C16 2.2uF 10V 1 U3 74VCX245BQX 4 VDD AIN+ (Opt) 5 2 R23 3 32 1 JP2 VDD 0.1uF 1 INV 2 C14 R24 (Opt) NORM R21 10 R22 (Opt) C13 2.2uF 10V CLK VDD 0.1uF U9 NC7SV86P5X 4 0.1uF 1 4 2 3 VDD + C29 (Opt) "B" Case E3 VDD 3V OVDD + E5 GND C30 (Opt) "B" Case E4 OVDD APPROVALS DRAWN: Rudy Bautista ENGINEER: C. Pei E6 GND APPROVED: Title Size CHECKED: DCxxxA_00.PCB 1630 McCARTHY BLVD www.linear.com MILPITAS, CA. 95035 LTC Confidential (408)432-1900 (408)434-0507 (FAX) For Customer Use Only xxxA_x.DSN Date: ADC Driver and ADC Document Number Rev Demo Circuit 1057A Sheet 2 of 1 2