5 4 3 2 1 REVISION HISTORY ECO D 2 2.1 DESCRIPTION APPROVED DATE SECOND PROTOTYPE ANDY M. 02/17/10 PRODUCTION, LABEL CHNAGES ANDY M. 03/04/10 D 3.3V TP1 1 VCC REV R1 1.5 3.1V - 3.5V C1 3.3V TP2 1uF 1 GND 3.3V C2 U1 1 C4 J1 C 2 RFIN 3 270pF C5 0.4pF R4 68.1 1% 4 C9 100pF VCC C3 100nF FLTR IN+ EN DEC RT1 IN- RT2 GND OUT C8 R3 100k 1% 10 TP3 9 1 EN C 8 7 TP6 6 1 C10 OPT 11 5 LTC5582IDD GND 1nF R5 2k VOUT R6 0 1nF B B CUSTOMER NOTICE APPROVALS LINEAR TECHNOLOGY HAS MADE A BEST EFFORT TO DESIGN A CIRCUIT THAT MEETS CUSTOMER-SUPPLIED SPECIFICATIONS; HOWEVER, IT REMAINS THE CUSTOMER'S RESPONSIBILITY TO PCB DES. MI VERIFY PROPER AND RELIABLE OPERATION IN THE ACTUAL APP ENG. ANDY MO APPLICATION. COMPONENT SUBSTITUTION AND PRINTED CIRCUIT BOARD LAYOUT MAY SIGNIFICANTLY AFFECT CIRCUIT PERFORMANCE OR RELIABILITY. CONTACT LINEAR TECHNOLOGY APPLICATIONS ENGINEERING FOR ASSISTANCE. A TECHNOLOGY TITLE: SCHEMATIC RMS POWER DETECTOR SIZE THIS CIRCUIT IS PROPRIETARY TO LINEAR TECHNOLOGY AND SUPPLIED FOR USE WITH LINEAR TECHNOLOGY PARTS. 5 4 N/A SCALE = NONE 3 1630 McCarthy Blvd. Milpitas, CA 95035 Phone: (408)432-1900 www.linear.com Fax: (408)434-0507 LTC Confidential-For Customer Use Only IC NO. REV. LTC5582IDD 2.1 DEMO CIRCUIT 1528A DATE: Monday, March 08, 2010 2 A SHEET 1 1 OF 1