DEMO MANUAL DC048 LTC1066-1 FILTER BOARD Switched-Capacitor Filter Evaluation Board for LTC1066-1 DESCRIPTIO This demonstration board allows the user to evaluate the bypassing, buffering and clock line routing to achieve best LTC 1066-1 switched-capacitor filter over the full op- performance from the LTC filter products. Gerber files for erational range. This board demonstrates proper layout, this circuit board are available. Call the LTC factory. and LTC are registered trademarks and LT is a trademark of Linear Technology Corporation. BOARD PHOOT W PACKAGE DIAGRA TOP VIEW + OUT A 1 18 V IN A 2 17 OUT B +IN A 3 16 +IN B V 4 15 GND + V 5 14 FILTER IN CONNECT 1 6 13 COMP 2 FILTER 7 12 CONNECT 2 OUT 8 50/100 11 COMP 1 9 CLK 10 V S PACKAGE 18-LEAD PLASTIC SOL 1 UDEMO MANUAL DC048 LTC1066-1 FILTER BOARD WW SCHE ATIC DIAGRA R F 1 E5 V OUT R6 C IN 20 1 JP1 C F 50:1 2 R3 1 E6 R IN 1 E1 4.99k SGND 100:1 1 1 18 V IN + 1% U1/1 OUT A V 3 2 17 IN A OUT B C4 1 E2 3 16 0.1F +IN A +IN B SGND U1 4 15 1 E7 V LTC1066-1 GND FGND 1 5 14 E3 1 + R1 C5 C6 JP2 + V FILTER 2 IN V 30k 0.1F 1F 6 13 DUAL 2 C3 CONNECT 1 COMP 2 2 D2 0.1F 7 12 D1 C1 MBRS130LT3 FILTER CONNECT 2 R4 OUT SINGLE MBRS130LT3 C2 15pF 8 11 4.99k 0.1F 50/100 COMP 1 1 3 1 1% 9 10 1 E4 1 E8 CLK V SGND V R7 10k R5 R2 20 1 200 J1 R1, C1 AND C ARE OPTIONAL, SEE TEXT. IN CLK 2 DC048 F01 PAR TS LIST REFERENCE DESIGNATOR QUANTITY PART NUMBER DESCRIPTION VENDOR PHONE NUMBER C , C6 (Note 1) 2 GRM42-6Y5V105Z025AL Cap, 1.0F, 25V, 10% Murata-Erie (814) 237-1431 F C2, C3, C4, C5 4 VJ1206Y104KXAMT Cap, 0.1F, 50V, 10% Vitramon (203) 268-6261 D1, D2 2 MBRS130LT3 Schottky Diode Motorola (602) 244-3576 E1 to E8 8 1502-2 Terminal Keystone (718) 956-0666 J1 1 227699-3 PCB Mount BNC AMP (717) 564-0100 JP1, JP2 2 TSW-103-07-G-S Header Samtec (812) 944-6744 R 1 5043EM20K00J Res, 20k, 1/4W, 5% Philips (817) 325-7871 F R 1 CD 1/4Z Res, 0, 1/4W SEI (919) 850-9500 IN R2 1 CR32-201J Res, 200, 1/8W, 5% AVX (803) 448-9411 R3, R4 2 5043EM4K990F Res, 4.99k, 1/4W, 1% Philips (817) 325-7871 R5, R6 2 CR32-200J Res, 20, 1/8W, 5% AVX (803) 448-9411 R7 1 CR32-103J Res, 10k, 1/8W, 5% AVX (803) 448-9411 U1 1 LTC1066-1CS IC LTC (408) 432-1900 2 SNT-100-BK-T Shunt Samtec (812) 944-6744 Note 1: For filter cutoff frequencies as low as 10Hz, use a C = 33F non- F polarized surface mount electrolytic capacitor, Sanyo 16CV33NP (619) 661-6835 or equivalent. 2