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19-2509; Rev 0; 7/02
MAX2116/MAX2118 Evaluation Kits
General Description
The MAX2116/MAX2118 evaluation kits (EV kits) simplify 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 0oC to +85oC
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 0.1F 10% capacitors Murata GRP155R61A104K 1000pF 10% capacitors Murata GRM188R71H102K 0.01F 10% capacitors Murata GRM188R71H103K 100F 5% capacitor Panasonic EEVHA0J101WR 0.22F 10% capacitors Murata GRM188R71A224K 0.1F 10% capacitor Murata GRM188R71C104K 3300pF 10% capacitor Murata GRM188R71H332K 330pF 5% capacitors Murata GRM188R71H331K 39pF 5% capacitor Murata GRM1885C1H390J 10F 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 1k 1% resistors 1k 1% resistors (MAX2118), open (MAX2116) If J5 is 50 SMA connector, use 86.6 1% resistor; if J5 is 75 F-connector, leave open If J5 is 50 SMA connector, use 43.2 1% resistor; if J5 is 75 F-connector, use 0 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
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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 2.21k 1% resistors 150 1% resistors 10k 1% resistors 0 1% resistor Open 75 1% resistor 1k 1% resistor 20k 1% resistor 4.7 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 needed 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 example) 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
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MAX2116/MAX2118 Evaluation Kits
Measurement Corrections
Corrections on both the input and the output are necessary for accurate measurements. On the MAX2116/ MAX2118 EV kit boards, F-connectors (75 impedance) 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 (800mVP-P) corresponds to -24.4dBm. For the MAX2118 EV kit, when DL = 1, full-scale output (1VP-P, differential) corresponds to -28.4dBm on each output port, while for DL = 0, fullscale output (590mVP-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. 8) Open the MAX2116/MAX2118 software. The software 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 frequency 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 baseband peak-to-peak output under the "Drive Level" box (1VP-P or 590mVP-P). 11) Set the RF generator's output power to approximately -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 connections 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 connector. 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.
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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 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 MAX2116/MAX2118 data sheet for more information.
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J2 SMA4 OPEN R2 OPEN (MAX2116) 1k (MAX2118) VCC 2 JPI VCC R9 10k 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 150 TP2 OPEN J8 24 23 22 21 C25 330pF C23 330pF TP5 Y1 C24 39pF C26 OPEN R23 1k R22 OPEN 5 SMA OPEN 74LV07A U2-C 6 74LV07A J10-18 J10-19 20 J10-20 VCC C17 0.22F TP9 + C16 100F R20 1k R21 2.21k C20 3300pF C19 0.1F TP10 C18 0.01F R18 20k C21 1000pF C22 0.22F J10-22 J10-23 J10-24 J10-21 8 12 74LV07A U2-D 9 TP1 OPEN J10-10 J10-2 VCC ASO QDCQDC+ IOUTN.C. C9 0.1F 1 IDCIDC+ VCCRF1 RFINU1 RFIN+ N.C. GCI VREG1 N.C. GND N.C. VCCLO LOFTL AS2 VTUNE CPOUT IFLT VCCCPX CFLT VCCVCO XTAL+ XTALCNTOUT XTALOUT MAX2116 (MAX2118) N.C. 25 ASI 26 SDA 27 VREG2 28 R10 O R13 2.21k SCL 29 VCCOIG 2 3 R15 75 C4 22pF 4 30 IOUT+ VCCRF2 VCCBB QOUT+ QOUTR7 2.21k J10-11 C13 0.01F R12 10k J10-3 C28 1000pF 1 VCCA J1 VCC SMA4 R8 150 U2-B 4 R4 OPEN (MAX2116) 1k (MAX2118) J3 SMA4 SMA4 OPEN
J4
11
12
13
14
15
16
17
18
VCC
R19 4.7 C14 1000pF C15 1000pF
Evaluate: MAX2116/MAX2118
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C11 1000pF C10 0.1F R1 1k VCC TP3 C32 100pF R3 1k C12 1000pF C8 1000pF C6 22pF 5 6 R17 1k 7 C7 OPEN 8 9 10 R16 OPEN TP7 19
Figure 1. MAX2116/MAX2118 EV Kit Schematic
VCC
J6
J7
C30 1000pF
C29 10F
TP8
J5
R6 SEE NOTE
RF SMA (OR F-CONNECTOR)
R5 SEE NOTE
NOTE: FOR SMA CONNECTOR, R5 = 86.6, R6 = 43.2, FOR F-CONNECTOR, R5 = OPEN, R6 = 0
MAX2116/MAX2118 Evaluation Kits
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MAX2116/MAX2118 Evaluation Kits Evaluate: MAX2116/MAX2118
1.0"
Figure 2. MAX2116/MAX2118 EV Kit Component Placement Guide
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MAX2116/MAX2118 Evaluation Kits Evaluate: MAX2116/MAX2118
1.0"
1.0"
Figure 3. MAX2116/MAX2118 EV Kit Component Placement Guide--Component Side
Figure 4. MAX2116/MAX2118 EV Kit Component Placement Guide--Solder Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 7 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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