Datasheet > MAX2685_1

MAX2685_1

更新时间： 2022-04-23 23:00:11

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描述
Evaluation Kit

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MAX2685_1 数据手册

19-1493; Rev 0; 7/99

MAX2685 Evaluation Kit

Evluates:MAX2685

General Description

Features

♦ +2.7V to +5.5V Single-Supply Operation

♦ 50Ω SMA Inputs and Outputs

The MAX2685 evaluation kit (EV kit) simplifies testing of

the MAX2685. This EV kit allows evaluation of the low-

noise amplifier (LNA) as well as the downconverter

mixer.

♦ Fully Assembled and Tested

♦ Allows Testing of All Device Functions

Component List

DESIGNATION QTY

DESCRIPTION

Ordering Information

C1, C3, C5,

0.1µF ceramic capacitors

C17

PART

TEMP. RANGE

IC PACKAGE

C2, C14, C15

C4, C8

C6, C7, C10

Not installed

MAX2685EVKIT

-40°C to +85°C

16 QSOP

47pF ceramic capacitors

330pF ceramic capacitors

3.3pF ceramic capacitor

6pF ±0.1pF ceramic capacitors

1000pF ceramic capacitor

12pF ±0.1pF ceramic capacitor

_________________________Quick Start

The MAX2685 EV kit is fully assembled and factory

tested. Follow the instructions in the Connections and

Setup section for proper device evaluation.

C11, C18

C12

C13

Test Equipment Required

This section lists the equipment recommended for veri-

fying the MAX2685’s operation. It is intended as a

guide only; some substitutions are possible.

10µF tantalum capacitor

AVX TAJC106K016

C16

12nH inductor

Toko LL1608-SH12NK

• Two RF signal generators capable of delivering at

least 0dBm of output power at frequencies to 2GHz

(HP 8648C or equivalent). One generator is required

for the local oscillator (LO) source; the other is

required for the mixer and LNA RF input. Only one

generator is required to operate the LNA.

680nH ±5% inductor

Coilcraft 1008CS-681XJBC 5%

820nH ±5% inductor

Coilcraft 1008CS-821XJBC 5%

R1, R2

Not installed

1kΩ resistors

75Ω resistor

15kΩ resistor

0Ω resistor

• An RF spectrum analyzer that covers the MAX2685’s

operating frequency range (the HP 8561E, for exam-

ple).

• A power supply that can provide up to 100mA at

+2.7V to +5.5V.

• An ammeter for measuring the supply current

R6, R7, R8

Not installed

(optional).

IFOUT+,

IFOUT-, LNAIN,

LNAOUT, LO,

MIXIN

• Several 50Ω SMA cables.

SMA connectors (PC edge mount)

Connections and Setup

This step-by-step guide explains how to get the EV kit

operational and how to evaluate both the LNA and the

downconverter mixer.

JU1, JU2

3-pin headers

GND, V

Eyelets

MAX2685EEE (16-pin QSOP)

MAX2685 PC board

None

________________________________________________________________ Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

12 3 4 5 6

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