Linear Technology DC1662A Demo Board (LT5585) Quick Start Guide
Quick start guide and bill of materials for the DC1662A evaluation board featuring the LT5585 wideband I/Q demodulator with IIP2 and DC offset control.
Overview
This document provides technical instructions and hardware details for the DC1662A demonstration circuit, which features the LT5585 wideband I/Q demodulator. It includes step-by-step procedures for power-up and measurement setup, specifying a 5V supply and typical 190mA current. The guide describes two methods for optimizing IIP2 and DC offset performance using either on-board trim pots or external voltage sources. A complete bill of materials is provided, listing key components such as the LT5585IUF#PBF IC, Anaren BD0826J50200A00 RF balun, and passive components from Murata and Vishay.
Use Cases
- Evaluating LT5585 wideband I/Q demodulator performance
- Prototyping RF receiver front-ends
- Optimizing IIP2 and DC offset in wireless communication systems
- RF signal demodulation testing
Topics
Referenced Parts
142-0701-851
E.F. Johnson
CONN., SMA, 50-OHM, EDGE-LANCH E.F.JOHNSON, 142-0701-851
LT5585IUF#PBF
Linear Technology
IC, LT5585IUF#PBF, QFN 4mm X 4mm
CRCW04020000Z0
Vishay
RES., CHIP, 0 Ohm, 0402 VISHAY, CRCW04020000Z0
CRCW08050000Z0
Vishay
RES., CHIP, 0 Ohm, 0805 VISHAY, CRCW08050000Z0
PS2-173
MCLI
Combiner MCLI PS2-173
2MM
Samtec
12 1 JP1 HEADER, 6 X 2 PIN, 2MM SAMTEC, TMM-106-02-L-D
| BD0826J50200A00 | Anaren | TRANSFORMER, RF BALUN ANAREN, BD0826J50200A00 |
| 3214X-1-501E | Bourns | POT., 4mm SMD, 500 Ohm BOURNS, 3214X-1-501-E |
| 2308-2-00-80-00-00-07-0 | Mill-Max | TESTPOINT, TURRET, .063" MILL-MAX, 2308-2-00-80-00-00-07-0 |
| 2501-2-00-80-00-00-07-0 | Mill-Max | TESTPOINT, TURRET, .094" MILL-MAX, 2501-2-00-80-00-00-07-0 |
| GJM1555C1H1R0WB01D | Murata | CAP., C0G, 1.0pF, +/-0.05pF, 0402 MURATA, GJM1555C1H1R0WB01D |
| GJM1555C1H1R2WB01D | Murata | CAP., C0G, 1.2pF, +/-0.05pF, 0402 MURATA, GJM1555C1H1R2WB01D |
| GRM1555C1H102JA01D | Murata | CAP., C0G, 1000pF, 5%, 50V, 0402 MURATA, GRM1555C1H102JA01D |
| GRM155R61A105KE15D | Murata | CAP., X5R, 1uF, 10%, 10V, 0402 MURATA, GRM155R61A105KE15D |
| GRM155R71C104KA88D | Murata | CAP., X7R, 0.1uF, 10%, 16V, 0402 MURATA, GRM155R71C104KA88D |
| GRM21BR71C475KA73L | Murata | CAP., X7R, 4.7uF, 10%, 16V, 0805 MURATA, GRM21BR71C475KA73L |
| LQG15HS5N1S02D | Murata | IND., MULTILAYER, 5.1nH, +/-0.3nH, 0402 MURATA, LQG15HS5N1S02D |
| 2SN-BK-G | Samtec | SHUNT SAMTEC, 2SN-BK-G |
| TMM-106-02-L-D | Samtec | HEADER, 6 X 2 PIN, 2MM SAMTEC, TMM-106-02-L-D |
| CRCW0402100RFKED | Vishay | RES., CHIP, 100 Ohm, 1%, 1/16W, 0402 VISHAY, CRCW0402100RFKED |
| CRCW08051R00FNEA | Vishay | RES., CHIP, 1 Ohm, 1%, 1/8W, 0805 VISHAY, CRCW08051R00FNEA |
| ZFSCJ-2-1 | Mini-Circuits | Combiner Mini-Circuits ZFSCJ-2-1 |
| ZRL-3500 | Mini-Circuits | ZRL-3500 Mini-Circuits |
| 142-0701-851 | E.F. Johnson | CONN., SMA, 50-OHM, EDGE-LANCH E.F.JOHNSON, 142-0701-851 |
| LT5585IUF#PBF | Linear Technology | IC, LT5585IUF#PBF, QFN 4mm X 4mm |
| CRCW04020000Z0 | Vishay | RES., CHIP, 0 Ohm, 0402 VISHAY, CRCW04020000Z0 |
| CRCW08050000Z0 | Vishay | RES., CHIP, 0 Ohm, 0805 VISHAY, CRCW08050000Z0 |
| PS2-173 | MCLI | Combiner MCLI PS2-173 |
| 2MM | Samtec | 12 1 JP1 HEADER, 6 X 2 PIN, 2MM SAMTEC, TMM-106-02-L-D |