19-2573; Rev 0; 8/02
MAX2150 Evaluation Kit
General Description
The MAX2150 evaluation kit (EV kit) simplifies testing of
the MAX2150 complete wideband I/Q modulator chip.
The kit allows evaluation of the I/Q modulator, synthe-
sizer, 3-wire programming interface, and power-
management features. The EV kit provides 50Ω con-
nectors for all signal inputs and outputs.
o
o
o
o
o
o
Features
3-Wire Control Interface
Differential Baseband Inputs
2.7V to 3.6V Single-Supply Operation
50Ω Connectors on All Signal Ports
Low-Power Shutdown Modes
PC Control Software
(Available at www.maxim-ic.com)
Evaluates: MAX2150
Ordering Information
PART
MAX2150EVKIT
TEMP RANGE
-40°C to +85°C
IC PACKAGE
28 QFN
Component Suppliers
SUPPLIERS
AVX
Coilcraft
Murata
Taiyo Yuden
Toko
PHONE
843-448-9411
800-322-2645
770-436-1300
800-368-2496
847-297-0070
FAX
843-448-7139
847-639-1469
770-436-3030
408-573-4159
847-699-7864
WEBSITE
www.avxcorp.com
www.coilcraft.com
www.murata.com
www.t-yuden.com
www.tokoam.com
Component List
DESIGNATION
BUFEN
C1, C2, C3,
C12, C18, C28,
C30, C31, C34,
C36, C37, C50,
C52
C4, C9, C10,
C11, C13, C35
C5, C6, C7,
C15, C16
C8
C14, C17
C19, C20, C21,
C32, C33
C22
C23
C24
QTY
1
DESCRIPTION
3-pin header, 100mil centers
Digi-Key S1012-36-ND
0.1µF
±10%
capacitors (0603)
Murata GRM188R71C104K
DESIGNATION
C25
C26
C27
DCIN,
EN
QTY
1
1
1
2
DESCRIPTION
1µF
±10%
tantalum capacitor, case A
AVX TAJA105K016
470pF
±10%
capacitor (0402)
Murata GRP155R71H471K
1.0µF
±10%
capacitor (0603)
Murata GRM188R60J105K
Test points
Digi-Key 5000-ND
50Ω BNC connectors, 31 series,
Amphenol Allied Electronics
31-5329-52RFX 713-9041
2-pin headers, 100mil centers
Digi-Key S1012-36-ND
13
6
5
1
2
5
1
1
1
100pF
±5%
capacitors (0402)
Murata GRP1555C1H101J
Open
22pF
±5%
capacitor (0402)
Murata GRP1555C1H220J
100pF
±5%
capacitors (0603)
Murata GRM1885C1H101J
0.1µF
±10%
capacitors (0402)
Murata GRP155R61A104K
6800pF
±10%
capacitor (0402)
Murata GRP155R71E682K
0.068µF
±10%
capacitor (0402)
Murata GRP155R61A683K
680pF
±10%
capacitor (0402)
Murata GRP155R71H681K
J1, J3
2
J5, J6, J7, J11,
J16, J17, J19,
J20, VCCSD
J8, J13, J14,
J15, J18
(Note 2)
J10
J19, J20,
BUFEN,
VCCSD
9
5
SMA connectors, edge mount
EFJohnson 142-0701-801
10-pin header
Digi-Key S2012-36-ND
Shunt-shorting jumpers
Digi-Key S9000-ND
1
4
________________________________________________________________
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.
MAX2150 Evaluation Kit
Evaluates: MAX2150
Component List (continued)
DESIGNATION
L1
R1–R4, R29,
R35
R12
R13, R18
R23
R24, R25
R31–R34
U1 (Note 1)
U2
VTUNE_OUT
QTY
1
6
1
2
1
2
4
1
1
1
Open
Open
0Ω
±5%
resistor (0402)
0Ω
±5%
resistors (0603)
245Ω
±5%
resistor (0402)
1.1kΩ
±1%
resistors (0402)
3.3kΩ
±5%
resistors (0603)
MAX2150EGI I/Q wideband
modulator
VCO
Fujitsu VC-3R0A23-0967/1750B
SMA connectors, PC mount
EFJohnson 142-0701-201
20MHz surface-mount crystal
CTS Reeves Digi-Key
ATS200SM CTX515TR-ND
MAX2150 EV kit circuit board, rev C
MAX2150 data sheet
MAX2150 EV kit data sheet
DESCRIPTION
Quick Start
The MAX2150 EV kit is fully assembled and factory test-
ed. Follow the instructions in the
Connections and
Setup
section.
Test Equipment Required
This section lists the recommended test equipment to
verify the operation of the MAX2150. It is intended as a
guide only, and substitutions are possible.
• One RF signal generator capable of delivering
-7dBm of output power in the 10MHz to 50MHz fre-
quency range (HP 8648A or equivalent) for the PLL
reference frequency
• RF spectrum analyzer capable of measuring up to 7GHz
RF signal (Rohde & Schwarz FSEA20 or equivalent)
• RF power meter capable of measuring up to
+10dBm output power (HP 437B or equivalent) with
an RF sensor
• RF network analyzer
• Oscilloscope
• Two power supplies that can provide 250mA at
+5.0V (AG E3631A or equivalent)
• Arbitrary waveform generator (HP E4433B or equivalent)
Y1
None
None
None
1
1
1
1
Connections and Setup
This section provides step-by-step instructions for get-
ting the EV kit up and running in all operation modes.
1) Verify that jumpers are in place.
2) Verify that the interface board is in place.
Note 1:
This IC has an exposed pad. It must be solder
attached to the circuit board to ensure proper function.
Note 2:
Cut center pin to approximately 1/16in long.
Connector Description
CONNECTOR
J1, J3
J5, J19
J6
J7, J11
J8
J10
J13
J14, J15
J16, J17
J18
J20
—
—
—
—
—
NAME
I, Q
VCCVCO
VCC
GND
RFOUT
—
BUFOUT
LO
N.C.
REFL IN
LOCK
BUFEN
DCIN
EN
TUNE_OUT
VCCSD
DESCRIPTION
I/Q Baseband Input BNC Connectors
V
CC
to On-Board VCO
Supply Voltage
Ground
RF Output (SMA)
Interface Connection
Buffer Output (SMA)
External LO Input (SMA)
No Connection
Reference Input (SMA)
Lock Signal Output
Buffer Enable
Bias Voltage Input
Enable Pin Input
Tuning Voltage Output
V
CC
to Sigma-Delta Modulator
DC VOLTAGE RANGE
—
2.7V ~ 3.6V
2.7V ~ 3.6V
—
—
2.7V ~ 3.6V
—
—
—
—
—
—
1.6V
—
—
2.7V ~ 3.6V
2
_______________________________________________________________________________________
MAX2150 Evaluation Kit
3) Set the power supply to +3V and turn it off.
4) Set the adjustable power supply to +1.6V and turn it
off.
5) Connect the ground terminal to GND.
6) Connect the positive +3V terminal to VCC and the
power supply of the interface board.
7) Connect the positive terminal of the adjustable
power supply to pin DCIN on the board.
8) Set the I/Q generator to 330kHz, with an input level
of 1V
P-P
. Leave the I/Q generator output off.
9) Using 2 BNC cables, connect the output of the I/Q
generator to the I/Q input connectors on the
MAX2150 EV kit board.
10) Use an SMA cable to connect the RFOUT to the
input of the spectrum analyzer.
11) Set the spectrum analyzer to view the output.
12) Turn on all power supplies and enable I/Q signal
generator.
13) Measure the supply current level.
14) Observe the RF output frequency as displayed on the
spectrum analyzer. Measure the RF output power.
15) The RF output power should be approximately
-4dBm after accounting for cable and connector loss.
Operation Modes:
1) TX mode
2) SYNTH mode
3) MOD mode
4) Software shutdown mode
5) Hardware shutdown mode
Refer to the MAX2150 data sheet for details.
Adjustments and Control
Evaluates: MAX2150
Layout Issues
A good PC board is an essential part of an RF circuit
design. The EV kit PC board can serve as a guide for
laying out a board using the MAX2150. Keep traces
carrying RF signals as short as possible to minimize
radiation and insertion loss. Use impedance control on
all RF signal traces. The VCC node on the PC board
should have decoupling capacitors to the closest
ground. Refer to the
Layout
section of the MAX2150
data sheet for more information.
_______________________________________________________________________________________
3
MAX2150 Evaluation Kit
Evaluates: MAX2150
J1
31-5239-52RFX
I
C50
0.1µF
VCC
R31
3.3kΩ
R32
3.3kΩ
R33
3.3kΩ
R34
3.3kΩ
C2
0.1µF
R1
OPEN
R2
OPEN
J3
31-5239-52RFX
Q
C52
0.1µF
R29
OPEN
DCIN
C28
0.1µF
VCC
R4
OPEN
C1
0.1µF
BUFEN
R3
OPEN
VCC
J6
VCC
J7
GND
1
VCC
C17
100pF
2
V
CC
_PA
LO-
20
C8
22pF
VCC
3
C16
OPEN
J16
4
TEST2
RFOUT
V
CC
_LO
19
1
VT
GND
C12
0.1µF
C20
0.1µF
U2
VC34DA230967/
1750B350FUJI
C25
1µF
C31
0.1µF
28
V
CC
_RF
TXEN
27
I+
26
I-
25
Q+
24
Q-
23
BUFEN
22
BUFOUT
LO+
21
C7
OPEN
C32
0.1µF
J15
LO
C3
0.1µF
VCC
R12
0Ω
C5
OPEN
C6
OPEN
C33
0.1µF
J13
BUFOUT
J14
LO
J8
RFOUT
R13
0Ω
C15
OPEN
C18
0.1µF
7
6
GND VSW
GND
5
4
U1
MAX2150
V
CC
_D
18
VCC
C4
100pF
2
3
VCC
J17
5
TEST1
V
CC
_A
17
C11
100pF
16
C10
100pF
VCC GND OUT
8
VCC
J19
J5
VCCVCO
J11
GND
LOCK
J20
6
LOCK
CHP
VCC
VCCSD
C27
1.0µF
7
C14
100pF
15
C22
6800pF
VCC
V
CC
_SD
CLK
8
DATA
9
EN
JUMP_PAD
C37
0.1µF
C13
100pF
EN
10
SHDN
11
SHDN
STNEN
12
OSCIN
13
V
CC
_CHP
V
CC
_XTAL
14
C9
100pF
C35
100pF
C34
0.1µF
C19
0.1µF
R24
1.1kΩ
R25
1.1kΩ
R23
245Ω
VCC
C23
0.068µF
C24
680pF
C26
470pF
R35
OPEN
L1
OPEN
C21
0.1µF
VTUNE_OUT
TUNEOUT
FILTVCC
VCOSEL
SYNEN
LOCK
DATA
TXEN
C36
0.1µF
R18
0Ω
C30
0.1µF
Y1
CLK
J10–5
J10–1
J10–3
J10–7
EN
J10–13
J10–15
J10–17
J10–11
J10–19
J10–9
J18 REFL
J10–2
J10–4
J10–6
J10–12
J10–14
J10–16
J10–18
Figure 1. MAX2150 EV Kit Schematic
4
_______________________________________________________________________________________
J10–10
J10–20
J10–8
MAX2150 Evaluation Kit
Evaluates: MAX2150
1.0"
Figure 2. MAX2150 EV Kit Primary-Side Silkscreen
_______________________________________________________________________________________
5
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