MAX5422_08 Datasheet, PDF (1/13 Pages) Maxim Integrated Products – Evaluation Kit

19-4171; Rev 0; 6/08
MAX5422 Evaluation Kit
General Description
The MAX5422 evaluation kit (EV kit) is an assembled
and tested PCB that evaluates the MAX5422 IC. The
MAX5422 is a 50kΩ 256-tap, nonvolatile, linear digital
potentiometer communicating over SPI™. The
MAX5422 features an internal nonvolatile EEPROM
used to store the potentiometer’s wiper position for ini-
tialization during power-up. The EEPROM is pro-
grammed through the SPI-compatible serial interface,
communicating at data rates up to 5MHz. The SPI sig-
nals can be transmitted through an on-board USB inter-
face circuit using a computer or a user-supplied SPI
bus along with PCB headers on the EV kit.
The EV kit also features Windows 2000/XP/Vista^®-com-
patible software that provides a professional user inter-
face for exercising the MAX5422’s features. The program
is menu driven and offers a graphical user interface
(GUI) complete with buttons, track bars, and spin boxes.
The MAX5422 IC is powered from a 3.3V source gener-
ated from the EV kit’s USB interface circuit, or an exter-
nal user-supplied 2.7V to 5.25V DC power supply. The
MAX5422 section can be broken out from the EV kit,
allowing the MAX5422 to be attached to the user appli-
cations with minimal additional circuit area.
The EV kit can also evaluate the MAX5423 (100kΩ)
or MAX5424 (200kΩ) after IC replacement (U1). The
MAX5422 EV kit is shipped with a MAX5422ETA+
IC installed.
SPI is a trademark of Motorola, Inc.
Windows Vista is a registered trademark of Microsoft Corp.
DESIGNATION
C1, C3–C10,
C17, C21–C25
C2, C13, C15
C11, C12
C14, C16, C26
QTY
15
3
2
3
DESCRIPTION
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C104K or
TDK C1608X7R1C104K
10µF ±20%, 6.3V X5R ceramic
capacitors (0805)
Murata GRM21BR60J106M or
TDK C2012X5R0J106M
10pF ±5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H100J or
TDK C1608C0G1H100J
1µF ±10%, 10V X5R ceramic
capacitors (0603)
Murata GRM188R61A105K or
TDK C1608X5R1A105K
Features
♦ Power-On Recall of Wiper Position from
Nonvolatile Memory
♦ 2.7V to 5.25V Single-Supply Operation
♦ On-Board USB Interface Circuit for SPI-
Compatible Signals
♦ Proven USB-PC Connection for Power and
Control (USB Cable Included)
♦ Main Circuit Breakout Board
♦ PCB Headers for User-Supplied SPI-Compatible
Signals
♦ PCB Pads for Potentiometer Signals L, W, and H
♦ Evaluates the MAX5422ETA/MAX5423ETA/
MAX5424ETA in 3mm x 3mm x 0.8mm, 8-Pin
TDFN Package
♦ Windows 2000/XP/Vista (32-Bit)-Compatible
Software
♦ Fully Assembled and Tested
Ordering Information
PART
MAX5422EVKIT+
+Denotes lead-free and RoHS compliant.
TYPE
EV Kit
Component List
DESIGNATION
C18, C19
C20
D1
FB1
J1, J2
JU1, JU2
JU3
QTY
2
1
1
0
2
2
1
DESCRIPTION
22pF ±5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H220J or
TDK C1608C0G1H220J
3300pF ±10%, 50V X7R ceramic
capacitor (0603)
Murata GRM188R71H332K or
TDK C1608X7R1H332K
Green LED (0603)
Panasonic LNJ314G8TRA
Not installed, ferrite bead inductor
(0603)
2 x 6-pin headers
3-pin headers
2-pin header
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.