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
MAX2116/MAX2118 Evaluation Kits
________________________________________________________________ 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.
19-2509; Rev 0; 7/02
Component List
Ordering Information
PART
TEMP RANGE
IC PACKAGE
MAX2116EVKIT
0
o
C to +85
o
C
40 QFN
MAX2118EVKIT
0
o
C to +85
o
C
40 QFN
DESIGNATION
QTY
DESCRIPTION
C4, C6
2
22pF
5% capacitors
Murata GRP1555C1H220J
C7, C26, C27
3
Open
C8
1
1000pF capacitor
Murata GRP155R71H102K
C9, C10
2
0.1F
10% capacitors
Murata GRP155R61A104K
C11, C12, C14,
C15, C21, C28,
C30
7
1000pF
10% capacitors
Murata GRM188R71H102K
C13, C18
2
0.01F
10% capacitors
Murata GRM188R71H103K
C16
1
100F
5% capacitor
Panasonic EEVHA0J101WR
C17, C22
2
0.22F
10% capacitors
Murata GRM188R71A224K
C19
1
0.1F
10% capacitor
Murata GRM188R71C104K
C20
1
3300pF
10% capacitor
Murata GRM188R71H332K
C23, C25
2
330pF
5% capacitors
Murata GRM188R71H331K
C24
1
39pF
5% capacitor
Murata GRM1885C1H390J
C29
1
10F
10% capacitor
AVX TAJC106K016
DESIGNATION
QTY
DESCRIPTION
C32, C33
2
100pF
5% capacitors
Murata GRM1885C1H101J
J1, J3
2
SMA connectors, edge mount,
round contact
EFJohnson 142-0701-801
J2, J4, J8
3
Open
J5
1
RF connector
Mouser ME161-5371
J6, J7
2
Test points
Digi-Key 5000K-ND
J10
1
DB25 connector, right angle, male
AMP 747238-4
Digi-Key A2098
JP1
1
2-pin header
Digi-Key S9000-ND
R1, R3, R20, R23
4
1k
1% resistors
R2, R4
2
1k
1% resistors (MAX2118),
open (MAX2116)
R5
1
If J5 is 50
SMA connector,
use 86.6
1% resistor;
if J5 is 75
F-connector,
leave open
R6
1
If J5 is 50
SMA connector,
use 43.2
1% resistor;
if J5 is 75
F-connector,
use 0
1% resistor
Evaluate: MAX2116/MAX2118
MAX2116/MAX2118 Evaluation Kits
2
_______________________________________________________________________________________
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
Component Suppliers
SUPPLIERS
PHONE
FAX
WEBSITE
AVX
843-448-9411
843-448-7139
www.avxcorp.com
Digi-Key
800-344-4539
218-681-3380
www.digikey.com
Murata Electronics
770-436-1300
770-436-3030
www.murata.com
Panasonic
800-833-9626
--
www.panasonic.com
Texas Instruments
800-336-5236
--
www.ti.com
Component List (continued)
DESIGNATION
QTY
DESCRIPTION
R7, R13, R21
3
2.21k
1% resistors
R8, R14
2
150
1% resistors
R9, R12
2
10k
1% resistors
R10
1
0
1% resistor
R11, R16, R22
3
Open
R15
1
75
1% resistor
R17
1
1k
1% resistor
R18
1
20k
1% resistor
R19
1
4.7
5% resistor
TP1, TP2
2
Open
TP3, TP4, TP5,
TP7TP10
7
Test points
Digi-Key 5000K-ND
U1
1
MAX2116UGL
U2
1
TI SN74LV07ADR,
Digi-Key 296-3764-1-ND
Y1
1
4MHz Crystal Citizen America
HCM49-4.000MABJT,
Digi-Key 300-6103-1-ND,
Pletronics SM42306-4M
None
1
MAX2116/MAX2118 EV kit circuit
board, rev 2
None
1
MAX2116/MAX2118 EV kit data
sheet
None
1
MAX2116/MAX2118 data sheet
Evaluate: MAX2116/MAX2118
MAX2116/MAX2118 Evaluation Kits
_______________________________________________________________________________________
3
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 (75
imped-
ance) are mounted at the RFIN port. To use 50
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 1k
resistors in
series with the output pins, which lead to 26.4dB loss if
50
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 50
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.
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 75
to 50 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 50
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.
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
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.
MAX2116/MAX2118 Evaluation Kits
4
_______________________________________________________________________________________
Evaluate: MAX2116/MAX2118
MAX2116/MAX2118 Evaluation Kits
_______________________________________________________________________________________
5
C13
0.01
F
C11
1000pF
C27
OPEN
U1
MAX2116
(MAX2118)
N.C.
11
12
13
14
15
16
17
18
19
20
21
22
23
24
R14
150
R23
1k
R11
OPEN
R7
2.21k
R9
10k
JPI
1
2
VCC
VCCA
R12
10k
R13
2.21k
R10
O
J8
TP2
OPEN
TP1
OPEN
25
26
27
28
29
30
10
9
8
7
6
5
4
3
2
1
31
32
33
34
35
36
37
38
39
40
C10
0.1
F
VCC
J1
SMA4
R1
1k
J2
SMA4
OPEN
R2
OPEN (MAX2116)
1k
(MAX2118)
J3
SMA4
R3
1k
J4
SMA4
OPEN
R4
OPEN (MAX2116)
1k
(MAX2118)
C12
1000pF
VCC
VCC
C9
0.1
F
VCC
VCC
+
TP7
C8
1000pF
J5
VCC
C29
10
F
C30
1000pF
C7
OPEN
C14
1000pF
C15
1000pF
C20
3300pF
C19
0.1
F
R21
2.21k
C16
100
F
C18
0.01
F
C25
330pF
C23
330pF
C24
39pF
C21
1000pF
C22
0.22
F
C26
OPEN
R22
OPEN
OPEN
SMA
C33
100pF
J10-24
J10-23
J10-22
J10-21
J10-20
J10-19
J10-18
J10-10
J10-2
J10-11
J10-3
C17
0.22
F
TP9
TP10
VCC
C4
22pF
C6
22pF
RF SMA
(OR F-CONNECTOR)
TP8
J6
R17
1k
R19
4.7
R20
1k
R18
20k
R15
75
R6
SEE NOTE
R5
SEE NOTE
R16
OPEN
NOTE:
FOR SMA CONNECTOR, R5 = 86.6
, R6 = 43.2
,
FOR F-CONNECTOR, R5 = OPEN, R6 = 0
VCCLO
VCCVCO
LOFTL
AS2
VTUNE
CPOUT
IFLT
VCCCPX
CFLT
QDC-
QDC+
VCCRF2
IOUT+
IOUT-
VCCBB
QOUT+
QOUT-
ASO
N.C.
XTAL+
XTAL-
CNTOUT
XTALOUT
N.C.
ASI
SDA
VREG2
SCL
VCCOIG
GND
N.C.
VREG1
GCI
N.C.
RFIN+
RFIN-
VCCRF1
IDC+
IDC-
J7
56
U2-C
74LV07A
89
U2-D
74LV07A
13
12
U2-F
74LV07A
21
U2-A
74LV07A
TP4
R8
150
C32
100pF
C28
1000pF
11
10
U2-E
74LV07A
43
U2-B
74LV07A
TP3
VCCA
TP5
Y1
Figure 1. MAX2116/MAX2118 EV Kit Schematic
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