19-3615; Rev 0; 3/05
MAX7044 Evaluation Kit
General Description
Features
♦ Proven PC Board Layout
The MAX7044 evaluation kit (EV kit) allows for a
detailed evaluation of the MAX7044 ASK transmitter. It
enables testing of the device’s RF performance and
requires no additional support circuitry. The RF output
uses a 50Ω matching network and an SMA connector
for convenient connection to test equipment. A reverse
polarity SMA is also included to connect to a 1/4-wave
whip antenna. The EV kit can also directly interface to
the user’s embedded design for easy data encoding.
♦ Proven Components Parts List
♦ Multiple Test Points Provided on Board
♦ Available in 315MHz or 433.92MHz Optimized
Versions
♦ Adjustable Frequency Range from 300MHz to
450MHz*
The MAX7044EV kit comes in two versions: a 315MHz
version and a 433.92MHz version. The passive compo-
nents are optimized for these frequencies. These com-
ponents can easily be changed to work at RF frequen-
cies from 300MHz to 450MHz.
♦ Fully Assembled and Tested
♦ Can Operate as a Stand-Alone Transmitter with
Included Battery
*Requires component changes
For easy implementation into the customer’s design, the
MAX7044 EV kit also features a proven PC board lay-
out, which can be easily duplicated for quicker time-to-
market. The EV kit Gerber files are available for down-
load at www.maxim-ic.com.
Ordering Information
PART
TEMP RANGE
IC PACKAGE
MAX7044EVKIT-315
MAX7044EVKIT-433
-40°C to +85°C 8 SOT23-8
-40°C to +85°C 8 SOT23-8
Component List
DESIGNATION
QTY
DESCRIPTION
DESIGNATION
QTY
DESCRIPTION
220pF 5%, 50V ceramic
capacitors (0603)
Murata GRM1885C1H221J
12pF 5%, 50V ceramic
capacitor (0603)
Murata GRM1885C1H120J
C11, C12
2
C1 (315MHz)
1
12pF 5%, 50V ceramic
capacitors (0603)
Murata GRM1885C1H120J
10.0pF 5%, 50V ceramic
capacitor (0603)
Murata GRM1885C1H100J
C14, C15
JU1
2
1
2
C1 (433MHz)
C2 (315MHz)
C2, C6 (433MHz)
C4, C10
1
1
2
2
2-pin header
Digi-Key S1012-36-ND or
equivalent
18pF 5%, 50V ceramic
capacitor (0603)
Murata GRM1885C1H180J
3-pin headers
Digi-Key S1012-36-ND or
equivalent
15pF 5%, 50V ceramic
capacitors (0603)
Murata GRM1885C1H150J
JU2, JU3
27nH 5% inductor (0603)
Coilcraft 0603CS-27NXJB
0.01µF 10%, 50V ceramic
capacitors (0603)
Murata GRM188R71H103KA01
L1 (315MHz)
L1 (433MHz)
L3 (315MHz)
L3 (433MHz)
R1
1
1
1
1
1
13nH 5% inductor (0603)
Murata LGW18AN13NG00
C5, C7, C16,
C18, C19
0
1
Not installed, capacitors
18nH 5% inductor (0603)
Coilcraft 0603CS-18NXJB
15pF 5%, 50V ceramic
capacitor (0603)
Murata GRM1885C1H150J
C6 (315MHz)
11nH 5% inductor (0603)
Coilcraft 0603CS-11NXJB
5kΩ potentiometer
BC Components SM4W502
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.