Evaluates: MAX20337

MAX20337 Evaluation Kit

General Description

The MAX20337 evaluation kit (EV kit) is a fully assembled

and tested circuit board that evaluates the MAX20337

beyond-the-rails SPDT analog switches. The EV kit

comes with the MAX20337ENT+ installed.

The EV kit features evaluation of the analog switches

through audio jack inputs and outputs, as well as SMA

connectors for AC characteristics. Input power to the EV

kit is provided by a Micro-USB, type-B connector, or an

external power supply.

Features

● USB Power Option

● SMA and 3.5mm Audio Jack Connectors

• Directly Evaluate AC Characteristics Through SMA

Connectors

• Quickly Evaluate Audio Performance with 3.5mm

Audio Jack Connectors

● Proven PCB Layout

● Fully Assembled and Tested

EV Kit Contents

● EV Kit Board containing a MAX20337

319-100649; Rev 1; 1/21

Ordering Information appears at end of data sheet.

Quick Start

Required Equipment

● MAX20337 EV kit

● USB Cable or Power Supply

● Audio source (e.g., MP3 player, computer, etc.)

● External speakers or headphones with 3.5mm audio

jack

Procedure

The EV kit is fully assembled and tested. Follow the steps

below to verify board operation:

1) Connect a USB cable to J1 or power VB (TP1) with

5V power supply.

2) Verify that jumper JU4 has a shunt installed short-

ing pins 2–3. This shorts the control bit (CB) on the

devices to ground, electrically connecting NC1 to

COM1 and NC2 to COM2.

3) J2 is now connected to J3. Connect an audio source

to the normally closed audio jack J2, using a male-to-

male 3.5mm audio cable.

4) Connect external speakers or headphones to the

common audio jack J3.

5) When the audio source outputs the audio signal and

JU4 has a shunt shorting pins 2-3, the audio signal

should be heard on the speakers or headphones con-

nected at J3.

6) Move the shunt on JU4 from pins 2–3 to pins 1–2.

Now CB is high, and J4 is connected to J3. The audio

signal should no longer be heard on the speakers or

headphones connected at J3.

7) If the audio source connection moves from the

normally closed audio jack (J2) to the normally open

audio jack (J4), the audio signal on the common audio

jack (J3) is heard on the speakers or headphones.

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