19-2509; Rev 0; 7/02
MAX2116/MAX2118 Evaluation Kits
General Description
The MAX2116/MAX2118 evaluation kits (EV kits) simpli-
fy evaluation of the MAX2116/MAX2118 complete DBS
direct-conversion tuner ICs. They enable testing of the
devices’ performance and require no additional support
circuitry. The EV kits’ signal inputs and outputs use
SMA and F-type connectors to facilitate the connection
of RF/cable test equipment.
Features
o
Easy Evaluation of the MAX2116/MAX2118
o
4.75V to 5.25V Single-Supply Operation
o
Jumpers for Digital Power Control
o
All Critical Peripheral Components Included
o
PC Control Software
(Available at www.maxim-ic.com)
Evaluate: MAX2116/MAX2118
Ordering Information
PART
MAX2116EVKIT
MAX2118EVKIT
TEMP RANGE
0 C to +85 C
0 C to +85 C
o
o
o
o
IC PACKAGE
40 QFN
40 QFN
Component List
DESIGNATION
C4, C6
C7, C26, C27
C8
C9, C10
C11, C12, C14,
C15, C21, C28,
C30
C13, C18
C16
C17, C22
C19
C20
C23, C25
C24
C29
QTY
2
3
1
2
DESCRIPTION
22pF
±5%
capacitors
Murata GRP1555C1H220J
Open
1000pF capacitor
Murata GRP155R71H102K
0.1µF
±10%
capacitors
Murata GRP155R61A104K
1000pF
±10%
capacitors
Murata GRM188R71H102K
0.01µF
±10%
capacitors
Murata GRM188R71H103K
100µF
±5%
capacitor
Panasonic EEVHA0J101WR
0.22µF
±10%
capacitors
Murata GRM188R71A224K
0.1µF
±10%
capacitor
Murata GRM188R71C104K
3300pF
±10%
capacitor
Murata GRM188R71H332K
330pF
±5%
capacitors
Murata GRM188R71H331K
39pF
±5%
capacitor
Murata GRM1885C1H390J
10µF
±10%
capacitor
AVX TAJC106K016
DESIGNATION
C32, C33
QTY
2
DESCRIPTION
100pF
±5%
capacitors
Murata GRM1885C1H101J
SMA connectors, edge mount,
round contact
EFJohnson 142-0701-801
Open
RF connector
Mouser ME161-5371
Test points
Digi-Key 5000K-ND
DB25 connector, right angle, male
AMP 747238-4
Digi-Key A2098
2-pin header
Digi-Key S9000-ND
1kΩ
±1%
resistors
1kΩ
±1%
resistors (MAX2118),
open (MAX2116)
If J5 is 50Ω SMA connector,
use 86.6Ω
±1%
resistor;
if J5 is 75Ω F-connector,
leave open
If J5 is 50Ω SMA connector,
use 43.2Ω
±1%
resistor;
if J5 is 75Ω F-connector,
use 0Ω
±1%
resistor
J1, J3
J2, J4, J8
J5
J6, J7
2
3
1
2
7
2
1
2
1
1
2
1
1
J10
1
JP1
R1, R3, R20, R23
R2, R4
1
4
2
R5
1
R6
1
________________________________________________________________
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.
MAX2116/MAX2118 Evaluation Kits
Evaluate: MAX2116/MAX2118
Component List (continued)
DESIGNATION
R7, R13, R21
R8, R14
R9, R12
R10
R11, R16, R22
R15
R17
R18
R19
TP1, TP2
TP3, TP4, TP5,
TP7–TP10
U1
U2
QTY
3
2
2
1
3
1
1
1
1
2
7
1
1
DESCRIPTION
2.21kΩ
±1%
resistors
150Ω
±1%
resistors
10kΩ
±1%
resistors
0Ω
±1%
resistor
Open
75Ω
±1%
resistor
1kΩ
±1%
resistor
20kΩ
±1%
resistor
4.7Ω
±5%
resistor
Open
Test points
Digi-Key 5000K-ND
MAX2116UGL
TI SN74LV07ADR,
Digi-Key 296-3764-1-ND
4MHz Crystal Citizen America
HCM49-4.000MABJT,
Digi-Key 300-6103-1-ND,
Pletronics SM42306-4M
MAX2116/MAX2118 EV kit circuit
board, rev 2
MAX2116/MAX2118 EV kit data
sheet
MAX2116/MAX2118 data sheet
Quick Start
The MAX2116/MAX2118 EV kits are fully assembled and
factory tested. Follow the instructions in the
Connections
and Setup
section for proper device evaluation.
Test Equipment Required
This section lists the recommended test equipment need-
ed to verify operation of the MAX2116/MAX2118. It is
intended as a guide, and substitutions are possible:
•
One RF signal generator capable of delivering
5dBm of output power at the operating frequency
(HPE4433B or equivalent)
One RF power sensor capable of handling 20dBm
of output power at the operating frequency
(HP 8482A or equivalent)
One RF power meter capable of measuring 20dBm
of output power at the operating frequency
(HP 437B or equivalent)
An RF spectrum analyzer that covers the MAX2116/
MAX2118 operating frequency range, as well as a
few harmonics (FSEB20, for example)
Two power supplies capable of 500mA at 5V
SMA cables
One SMA 20dB pad
(Optional) An ammeter for measuring the supply
current
(Optional) A network analyzer (HP 8753D, for exam-
ple) to measure small-signal return loss and gain
(Optional) A digital oscilliscope (TDS 3014, for
example)
An F-connector to SMA adapter and matching PAD
A PC loaded with control software
•
•
•
•
•
•
•
•
•
•
•
Y1
1
None
None
None
1
1
1
Component Suppliers
SUPPLIERS
AVX
Digi-Key
Murata Electronics
Panasonic
Texas Instruments
PHONE
843-448-9411
800-344-4539
770-436-1300
800-833-9626
800-336-5236
FAX
843-448-7139
218-681-3380
770-436-3030
—
—
WEBSITE
www.avxcorp.com
www.digikey.com
www.murata.com
www.panasonic.com
www.ti.com
2
_______________________________________________________________________________________
MAX2116/MAX2118 Evaluation Kits
Measurement Corrections
Corrections on both the input and the output are neces-
sary for accurate measurements. On the MAX2116/
MAX2118 EV kit boards, F-connectors (75Ω imped-
ance) are mounted at the RFIN port. To use 50Ω test
equipment, an adapter is needed. Thus, the input
power must be adjusted to compensate for the adapter
loss (typically 5.7dB for a “min-loss” pad).
At the baseband output ports, there are 1kΩ resistors in
series with the output pins, which lead to 26.4dB loss if
50Ω test equipment is used. Therefore, for the
MAX2116 EV kit, full-scale output (800mV
P-P
) corre-
sponds to -24.4dBm. For the MAX2118 EV kit, when DL
= 1, full-scale output (1V
P-P
, differential) corresponds to
-28.4dBm on each output port, while for DL = 0, full-
scale output (590mV
P-P
, differential) corresponds to
-33dBm on each output port. When connecting to 50Ω
test equipment, always ensure that DC blocking is used
so that I/Q output bias networks are not disrupted.
Note on MAX2118:
All power levels specified in this EV kit description refer
to single-ended measurements.
8) Open the MAX2116/MAX2118 software. The soft-
ware opens in either the MAX2116 or MAX2118
mode. You can change to the appropriate part
under the Option Menu: “Select EVkit type:
MAX2116 or MAX2118”.
9) Click on the Synthesizer tab and configure the
following:
a) Ref = 4
b) R Divider = 4 (This sets the comparison fre-
quency to 1MHz when using the on-board
4MHz crystal)
c) Calibrate VCOs by clicking the “VCO Cal” button.
d) Check “Auto Div Select” and “Auto Band
Select” (This allows the software to pick the
appropriate divider (div by 2 or div by 4) and to
select the appropriate VCO for the entered LO
frequency.)
e) Enter the desired LO frequency
10) Select the Base tab and set the following:
a) Gain Control 2 = 0 (max baseband gain)
b) M Divide = 2 and FDAC = 127 (max baseband
filter bandwidth)
c) If using the MAX2118, select the desired base-
band peak-to-peak output under the “Drive
Level” box (1V
P-P
or 590mV
P-P
).
11) Set the RF generator’s output power to approxi-
mately -65dBm. Activate the RF generator’s output
and select the desired CW input frequency so that
the generator’s frequency is 5MHz higher than the
frequency set in Step 9d. This creates a single
5MHz tone at the baseband output ports.
12) Set the spectrum analyzer: CF = 5MHz, Span =
200kHz, RBW = 1kHz, and VBW = 1kHz. Or, using
an oscilloscope, observe a tone at 5MHz. Adjust the
RF power to obtain the proper output levels as
specified in the “Measurement Corrections” section
of this procedure.
Analog Gain Control (GC1) Test:
1) Adjust the power supply connected to TP7 (GC1) to
0.75V (max RF gain).
2) Ensure that the baseband gain setting is set for
decimal 0 (max baseband gain).
3) Set the RF signal generator’s frequency to 5MHz
higher than the desired LO frequency and its input
power to -65dBm. (The signal generator power
might need to be adjusted to produce a full-scale
baseband output level.)
Evaluate: MAX2116/MAX2118
Connections and Setup
This section provides a step-by-step guide to operating
the EV kit and testing the device’s function. Do not turn
on the DC power or RF signal generators until all con-
nections are made:
1) Verify that all jumpers are in place.
2) Connect the PC to the EV kit using the parallel
cable.
3) Connect a DC power supply set to +5V (through an
ammeter, if desired) to the VCC and GND terminals
on the EV kit. Set the current limit to 300mA. Do not
turn on the supply.
4) Connect the second DC power supply set to 0.75V
(max RF gain) to GC1 (TP7). Set the current limit to
10mA. Do not turn on the supply.
5) Connect an RF signal generator to the RFIN con-
nector. Use a 75Ω to 50Ω adapter if necessary. Do
not turn on the generator’s output.
6) Connect the I or Q output to a spectrum analyzer or
a digital oscilloscope. If using a spectrum analyzer
or an oscilloscope in 50Ω mode, insert a DC block
to protect the analyzer from damage.
7) Turn on the DC supplies. The 5V supply should
read approximately 190mA. The 0.75V supply
should be less than 1mA.
_______________________________________________________________________________________
3
MAX2116/MAX2118 Evaluation Kits
Evaluate: MAX2116/MAX2118
4) Put a delta marker on the desired tone and increase
the GC1 voltage.
5) The gain delta is greater than 60dB.
Digital Gain Control (GC2) Test:
1) Adjust the power supply connected to TP7 to 0.75V
(max RF gain).
2) Set the baseband gain control to 0 (max baseband
gain).
3) Set the RF signal generator’s frequency to 5MHz
higher than the desired LO frequency and its input
power to -65dBm. (The signal generator power
might need to be adjusted to produce a full-scale
baseband output level.)
4) Put a delta marker on the desired tone and increase
the baseband gain control to 31.
5) The gain delta is larger than 20dB.
Lowpass Filters Test:
1) Adjust the power supply connected to TP7 to 0.75V
and GC2 to decimal 0 (max baseband gain).
2) Set the RF generator to -65dBm and 10MHz higher
than the desired LO frequency.
3) Set the spectrum analyzer to measure from 0 to
50MHz and put a delta marker on the desired tone.
(Adjust GC1 level for a full-scale baseband output
level.)
4) While monitoring the 10MHz tone on the spectrum
analyzer, decrease FDAC.
5) Note the decrease in filter-noise-floor bandwidth.
When the computed 3dB BW equals 10MHz, the
desired tone is attenuated by more than 1dB.
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 MAX2116/MAX2118. Keep
traces carrying RF signals as short as possible to mini-
mize radiation and insertion loss. Use impedance con-
trol on all RF signal traces. The VCC node on the PC
board should have decoupling capacitors to the clo-
sest ground. Refer to the
Layout
section of the
MAX2116/MAX2118 data sheet for more information.
4
_______________________________________________________________________________________
J2
SMA4
OPEN
R2
OPEN (MAX2116)
1kΩ (MAX2118)
VCC
2
JPI
VCC
R9
10kΩ
3
74LV07A
U2-E
40
39
38
37
36
35
34
33
32
31
11
10
74LV07A
R11
OPEN
VCCA
U2-A
C27
OPEN
2
1
74LV07A
U2-F
13
C33
TP4 100pF
R14
150Ω
TP2
OPEN
J8
24
23
22
21
C25
330pF
C23
330pF
TP5
Y1
C24
39pF
C26
OPEN
R23
1kΩ
R22
OPEN
5
SMA
OPEN
74LV07A
U2-C
6
74LV07A
J10-18
J10-19
20
J10-20
VCC
C17
0.22µF
TP9
+
C16
100µF
R20
1kΩ
R21
2.21kΩ
C20
3300pF
C19
0.1µF
TP10
C18
0.01µF
R18
20kΩ
C21
1000pF
C22
0.22µF
J10-22
J10-23
J10-24
J10-21
8
12
74LV07A
U2-D
9
TP1
OPEN
J10-10
J10-2
VCC
ASO
QDC-
QDC+
IOUT-
N.C.
C9
0.1µF
1
IDC-
IDC+
VCCRF1
RFIN-
U1
RFIN+
N.C.
GCI
VREG1
N.C.
GND
N.C.
VCCLO
LOFTL
AS2
VTUNE
CPOUT
IFLT
VCCCPX
CFLT
VCCVCO
XTAL+
XTAL-
CNTOUT
XTALOUT
MAX2116
(MAX2118)
N.C.
25
ASI
26
SDA
27
VREG2
28
R10
OΩ
R13
2.21kΩ
SCL
29
VCCOIG
2
3
R15
75Ω
C4
22pF
4
30
IOUT+
VCCRF2
VCCBB
QOUT+
QOUT-
R7
2.21kΩ
J10-11
C13
0.01µF
R12
10kΩ
J10-3
C28
1000pF
1
VCCA
J1
VCC
SMA4
R8
150Ω
U2-B
4
R4
OPEN (MAX2116)
1kΩ (MAX2118)
J3
SMA4
SMA4
OPEN
J4
11
12
13
14
15
16
17
18
VCC
R19
4.7Ω
C14
1000pF
C15
1000pF
Evaluate: MAX2116/MAX2118
_______________________________________________________________________________________
C11
1000pF
C10
0.1µF
R1
1kΩ
VCC
TP3
C32
100pF
R3
1kΩ
C12
1000pF
C8
1000pF
C6
22pF
5
6
R17
1kΩ
7
C7
OPEN
8
9
10
R16
OPEN
TP7
19
Figure 1. MAX2116/MAX2118 EV Kit Schematic
VCC
J6
J7
C30
1000pF
C29
10µF
TP8
J5
R6
SEE NOTE
RF SMA
(OR F-CONNECTOR)
R5
SEE NOTE
NOTE:
FOR SMA CONNECTOR, R5 = 86.6Ω, R6 = 43.2Ω,
FOR F-CONNECTOR, R5 = OPEN, R6 = 0Ω
MAX2116/MAX2118 Evaluation Kits
5
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