5 4 3 2 1 Optional DC-Accurate Filter Vdd2 R1 1.5M Vdd R2 1K BNC C GND IN 2 E5 E6 3 R7 0 49.9 2 BNC 7 ENABLE VDD C6 0.01uF * 3 5 C7A OUT RTN 1 GND Vss 1 4 R19 ACTIVE GND opt. 6 C10 GND VSS 0.01uF 1 Vdd E9 10uF Vss R12 Vss 7 2 - * Vss V+ 3 + * V- 4 C13 E8 U3 LT1494CS8 Buffered and Filtered Output C12 B 0.01uF Vss2 E12 Vdd E11 E13 E14 E15 E16 E17 E18 E19 Vdd2 R15 ASSEMBLY TYPE Optional Filter & Buffer E20 R14 0 Vss 0 Vss2 CONTRACT NO. * VERSION TABLE U1 C3 C6 C7A C9 DC427B-A LTC1966CMS8 0.22uF 0.22uF 1.0uF DC427B-B LTC1967CMS8 0.47uF 0.47uF DC427B-C LTC1968CMS8 2.2uF 2.2uF APPROVALS R4 R5 R10 R11 R12 R6/R8 1.0uF C13 0.1uF 681K 200K 38.3K 182K 274K 10K 2.2uF 2.2uF 0.22uF 402K 118K 23.2K 102K 174K 1K APPROVED 10uF 10uF 1.0uF 100K 29.4K 5.6K 24.9K 43K 499 ENGINEER Cheng-Wei Pei DRAWN June Wu DATE 6/24/04 CHECKED 6/24/04 DESIGNER Tuesday, September 28, 2004 5 0.01uF 6 R11 R10 E10 Vss A OutRtn C15 * * GND C Vdd2 JP5 C11 Raw Output * C9 C8 0.1uF 2 3 GND E7 Vss VSS 2 E4 Not Buffered C7B (OPT) * * JP3 2 IN2 TP2 JP4 R5 * JP6 Vdd Not Buffered U1 IN1 C16 0.01uF B D Filtered Output * C5 Vout R8 3 R9 0 49.9 8 * 1 R17 opt. R18 E1 * R4 0.01uF * J2 C14 C3 1 R16 V- U2 LT1494CS8 Vss2 2 J1 6 4 1K 2 E3 R3 1M 2 - 10uF TP1 JP2 ACTIVE GND R6 IN 1 + V+ 3 R13 1 E2 EN C2 3 3 1 OFF ON C4 0.1uF C1 0.01uF 7 3 JP1 Vdd 2 D Vdd2 4 3 2 TECHNOLOGY TITLE SIZE LTC1966CMS8 LTC1967CMS8 LTC1968CMS8 CAGE CODE SCALE: FILENAME: DWG NO 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 Fax: (408)434-0507 A RMS to DC Converter REV B DC427B SHEET 1 1 OF 1