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19-1507; Rev 1; 12/00
MAX2310/MAX2314 Evaluation Kits
General Description
The MAX2310/MAX2314 evaluation kits (EV kits) simplify testing of the MAX2310/MAX2314 IF receivers. These kits allow evaluation of the devices' variable-gain amplifier (VGA), I/Q demodulator, dual-band voltage-controlled oscillators (VCOs), synthesizer, 3-wire programming interface and power-management features. Figures 1 and 2 show MAX2310 and MAX2314 kit schematics, respectively. The EV kits provide 50 SMA connectors for all signal inputs and outputs. A varactor-based tank circuit is provided for the on-chip VCO and can be tuned by a potentiometer or an external voltage or phase locked with the on-chip phase-locked loop (PLL). PC board pads (J12, J13, J14, J15) are available for installing low-inductance oscilloscope probe points, if desired. o 3-Wire Interface o Differential Baseband Outputs o +2.7V to +5.5V Single-Supply Operation o SMA Connectors on All Signal Ports o Low-Power Shutdown Mode o PC Control Software (available at www.maxim-ic.com)
Features
Evaluate: MAX2310/MAX2314
Ordering Information
PART MAX2310EVKIT MAX2314EVKIT TEMP. RANGE -40C to +85C -40C to +85C IC PACKAGE 28 QSOP 28 QSOP
Note: To evaluate the MAX2312 or MAX2316, order the MAX2312EVKIT or MAX2316EVKIT.
Component List
DESIGNATION C1, C33, C34 C2 C3, C4 C5 C6, C7 C8, C12, C23, C24, C25 C9, C10, C11, C13, C14, C15, C18, C21, C22, C28, C35, C37, C38, C42, C46 C16, C26, C31, C32, C36, C39, C40, C41, C45 C17 C19, C20 QTY 3 1 2 1 2 5 DESCRIPTION 47pF 10%, 25V min ceramic capacitors (0402) 5pF 0.1pF, 25V min ceramic capacitor (0402) 18pF 10%, 25V min ceramic capacitors (0402) 1.5pF 0.1pF, 25V min ceramic capacitor (0402) (MAX2310) 12pF 10%, 25V min ceramic capacitors (0402) (MAX2310) 330pF 10%, 25V min ceramic capacitors (0402) DESIGNATION C27 C29 C30 D1 D3 D4 INTF2300 Interface Board L1 L2 9 Open 10pF 10%, 25V min ceramic capacitor (0402) 8pF 10%, 25V min ceramic capacitors (0402) L5 1 L3 QTY 1 1 1 1 1 1 1 1 1 1 DESCRIPTION 10F 10%, 16V min tantalum cap AVX TAJC106K016 0.033F 10%, 25V min ceramic capacitor (0402) 3300pF 10%, 25V min ceramic capacitor (0402) Open Varactor diode Alpha SMV1255-003 Varactor diode (MAX2310) Alpha SMV1255-003 3-wire programming and interface board 68nH inductor Coilcraft 0805CS-680 XJBC 18nH inductor (MAX2310) Coilcraft 0805CS-220 XJBC 1H inductor Coilcraft 1008CS-102 XKBC 180nH inductor Coilcraft 0805CS-181TKBC (MAX2310) 680nH inductor Coilcraft 0805CS-681TKBC (MAX2314) 270nH inductor Coilcraft 0805CS-271 XKBC 1
15
0.01F 10%, 25V min ceramic capacitors (0402)
1 2
L4
1
________________________________________________________________ Maxim Integrated Products
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.
MAX2310/MAX2314 Evaluation Kits Evaluate: MAX2310/MAX2314
Component List (continued)
DESIGNATION Q1 R1, R10, R12, R31-R34 R11 R4, R5 R2, R3, R23 C43 R6 R8, R14, R16, R18 R7 R9 R13, R24 R15, R17, R19, R20, R21, R25, R27-R30, R35 R22, R26 T1 U1 None None None QTY 1 6 1 2 3 1 1 4 1 1 2 Open 0 resistors (0402) 0 resistors (0402) (MAX2310) 10k 5% (0402) (MAX2310) 10k 5% resistors (0402) 1000pF 10% (0402) (MAX2314) 100 5% resistor (0402) (MAX2310) 100 5% resistors (0402) 49.9 1% resistor (0402) 680 1% resistor (0402) 10k Bourns variable resistors Digi-Key 3296W-104-ND Open 47k 5% resistors (0402) Balun transformer Toko DB458-1011 Maxim MAX2310EEI or MAX2314EEI IC MAX2310/MAX2314 circuit board MAX2310/MAX2312/MAX2314/ MAX2316 data sheet 20-pin ribbon cable Oscilloscope RF Signal Generators (2) DESCRIPTION
Table 1. Recommended Equipment
EQUIPMENT DESCRIPTION HP 8648A or equivalent. Capable of delivering -70dBm to -10dBm of output power in the 10MHz to 500MHz frequency range. One generator is required to test the receive signal path and the other is for the reference frequency. For viewing the demodulator outputs, 3-wire serial interface, and other functions Capable of providing at least 100mA at +2.7V to +5.5V For external control of VGA functions (optional) 486DX33 or better, with Windows95(R) or Windows98(R) operating system and a functional parallel port. Provided with EV kit
Power Supply Additional Voltage Source Personal Computer INTF2300 Interface Board
11 2 1 1 1 1 1
Windows95 and Windows98 are registered trademarks of Microsoft Corp.
Recommended Test Equipment
The test equipment recommended to verify MAX2310/ MAX2314 operation is listed in Table 1. This list is intended as a guide only; substitutions may be possible.
Connections and Setup
The following sections provide instructions for getting the EV kit running in both the CDMA and FM modes. CDMA Mode Perform the following steps to evaluate the MAX2310/ MAX2314 in CDMA mode: 1) Verify that shunts JU3, JU10, and JU11 are in place. 2) Connect the INTF2300 interface cable as shown in Figure 8. (Pin 1 of the interface cable corresponds to the red wire; pin 1 is designated in silk screen on each of the PC boards.) 3) Connect a +2.75V power supply to the VCC and GND terminals. 4) Install and run Maxim's CDMA control software (available at www.maxim-ic.com). Click on the Maxim CDMA software on the Windows task bar. On the IC selection form, click on the MAX2310/ MAX2314 control button.
Component Suppliers
SUPPLIER Alpha Industries AVX Coilcraft Digi-Key Murata Toko PHONE 617-935-5150 803-946-0690 847-639-6400 218-681-6674 949-852-2001 708-297-0070 FAX 617-933-2359 803-626-3123 847-639-1469 218-681-3380 949-852-2002 708-699-1194
Quick Start
The MAX2310/MAX2314 EV kits are fully assembled and factory tested. Follow the instructions in the Connections and Setup section.
2
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MAX2310/MAX2314 Evaluation Kits
5) With the MAX2310/MAX2314 control screen active, bring the SHDN pin high by clicking on the "H" control button located near the middle of the screen. 6) (MAX2310 only) With the MAX2310/MAX2314 control screen active, bring the MODE pin high by clicking on the "H" control button located near the middle of the screen. The mode pin is floated on the MAX2314 board. In the control register set the DIV_SEL bit and the VCO_SEL bit to "0." Click on the "send data" button. 7) Connect a function generator to the REF port, configured for a sine wave with a 19.68MHz frequency and a -10dBm amplitude. (The REF port is 50 terminated.) 8) Connect a signal generator with 210.48MHz (MAX2310) or 85.48MHz (MAX2314) at -66dBm and apply it to the CDMA differential port. 9) Set VGC to 2.5VDC by rotating potentiometer R13. Optionally, an external VGC voltage may be used by removing jumper JU3 and applying a DC voltage to JU2. 10) Configure an oscilloscope to measure a highimpedance (10k), 1Vp-p, 100kHz differential waveform. Connect it to the I or Q output. Voltage gain can be calculated by: VOUTp-p Gain = 20log 2 2 VIN
PIN(dBm) 10
Adjustments and Control
VGC Adjust
The MAX2310/MAX2314 EV kits are configured with a 10k trim pot for setting and adjusting the VGA gain. An external supply can be used by removing the 2-pin shunt (JU3) and by directly connecting the supply to JU2. The VGC voltage must be clean to minimize undesired amplitude modulation.
Evaluate: MAX2310/MAX2314
Interface Control
The interface port is designed to use a 20-pin ribbon cable. Ten pins are signal lines, and the other 10 pins are digital grounds. Pin 1 of the interface cable is red. Pin 1 is also designated in silk screen on each of the PC boards.
Detailed Description
The following sections cover the EV kits' circuit blocks in detail. (Refer to the MAX2310/MAX2312/MAX2314/ MAX2316 data sheet for additional information.)
CDMA Inputs
The CDMA+ and CDMA- pins are differential inputs to the VGAs of the MAX2310/MAX2314. The EV kit is configured for single-ended (50) operation at the CDMA differential input connector. The on-board balun converts this input to a differential signal for the MAX2310/MAX2314. The impedance is set by the combination of L4, R9, C19, C20, and the 4:1 impedance ratio of the input balun.
FM Inputs
The FM+ and FM- pins are differential inputs to the VGAs of the MAX2310/MAX2314. The EV kit is configured for single-ended (50) operation at the FM connector. The matching network transforms 50 to 850.
VIN (RMS) = 1/2 x 10 Gain = approximately 60dB
Note: The balun loss is not taken into account. This loss is typically less than 0.5dB. FM Mode Perform the following steps to change to FM mode: 1) With the MAX2310/MAX2314 control screen active, bring the MODE pin low by clicking on the "L" control button located near the middle of the screen (MAX2310). Set the IN_SEL bit to "0." Click on the "send data" button (MAX2314). 2) Connect a signal generator with 85.48MHz at -66dBm and apply it to the FM port. 3) Configure an oscilloscope to measure a highimpedance (10k), 1Vp-p, 100kHz, differential waveform. Connect it to the I or Q output.
REF Inputs
The REF port is AC-coupled and terminated for use with a 50 signal source.
I/Q Outputs
The I/Q outputs are self-biased baseband outputs.
PC Board Layout/Construction
The MAX2310/MAX2314 EV kits can serve as board layout guides. Keep PC board trace lengths as short as possible to minimize parasitics. Keep decoupling capacitors close to the device, with a low-inductance via connection to the ground plane. The MAX2310/MAX2314 EV kits' PC boards use 14milwide traces for 50 traces. The PC board has an 8millayer profile on FR4, with a 4.5 dielectric and 75mil trace-to-ground-plane spacing.
3
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Evaluate: MAX2310/MAX2314
VCCA VCC C1 47pF R24 10k BYP 1 DR BYP FM+ FM C17 10pF 24 R9 680 CDMA5 TANK_LC6 12pF 6 TANK_H+ VGC 22 L2 18nH 7 TANK_HMODE VCC DATA EN REF CLK 18 CLK C22 0.01F QOUT+ 17 19 20 VCCD C10 0.01F 11 R7 49.9 SHDN 13 IOUT+ R31 0 J2 14 R32 0 C11 0.01F C9 0.01F IOUTLOCK 15 LOCK R22 47k QOUT16 C35 0.01F R33 0 12 SHDN J1 8 MODE 21 VCCA DATA C21 0.01F R12 0 JU3 JU2 VGC C20 8pF TOKO DB458-1011 VCC 23 L4 180nH 8pF C19 T1 J5 CDMA DIFF 25 J4 FMC30 3300pF 2 CP_OUT 3 GND CDMA+ 4 TANK_L+ C2 5pF L1 68nH C46 0.01F R23 10k C29 R1 0 0.033F L3 1H L5 270nH C18 0.01F C14 C15 C13 0.01F 0.01F 0.01F 28 27 26 VCCA
MAX2310/MAX2314 Evaluation Kits
Figure 1. MAX2310EV Kit Schematic
MAX2310
R2 10k C3 18pF R3 10k R4 10k C4 18pF D3 R13 10k R5 10k C7 12pF 9V CC 10 GND D4 C5 1.5pF J3 REF EN R34 0 J7 QOUT+ J8 QOUTVCC
4
C36 OPEN
JU1
R10 0
R11 0
IOUT+
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IOUT-
R6 100 C8 330pF R8 100 OPEN 10 9 8 MODE VCC 7 SHDN 6 FILTERED VCC R14 5 DATA 100 EN 100 R18 3 CLK 100 LOCK C25 330pF VCC 2 LOCK 1 CLK C24 330pF R16 4 EN C23 330pF L6 270nH VCC C42 0.01F C12 330pF OPEN
MODE
Figure 1. MAX2310EV Kit Schematic (continued)
JU10 VCCA C27 10F C28 0.01F ICCA C37 0.01F C33 47pF JU11 VCCD ICCD C38 0.01F C34 47pF
SHDN
DATA
VCC
Evaluate: MAX2310/MAX2314
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GND
MAX2310/MAX2314 Evaluation Kits
5
Evaluate: MAX2310/MAX2314
VCCA C1 47pF C14 C15 C13 0.01F 0.01F 0.01F 28 27 26 BYP 1 DR BYP FM+ FM C17 10pF C19 15pF CDMA+ R9 680 CDMAC20 15pF 5 TANK_LAlpha SMV 1255-003 C4 18pF VGC 7 N.C. BYP VCC VCCA 20 19 18 DATA VCC GND EN REF CLK CLK C22 0.01F QOUT+ 17 R34 0 DATA C21 0.01F 22 6 N.C. R12 0 JU3 JU2 VGC TOKO DB458-1011 VCC 23 L4 680nH 24 CDMA DIFF J5 25 J4 FMC46 0.01F 2 CP_OUT 3 GND 4 TANK_L+ D4 C2 5pF L1 68nH L3 1H L5 270nH C18 0.01F VCCA
MAX2310/MAX2314 Evaluation Kits
Figure 2. MAX2314EV Kit Schematic
R23 10k C29 0.033F C30 3300pF
6
MAX2314
R2 10k C3 18pF R3 10k R13 10k 8 C43 1000pF VCCD 10 C10 0.01F 11 R7 49.9 SHDN 13 IOUT+ R31 0 C9 0.01F 14 IOUTR32 0 C11 0.01F LOCK 15 LOCK R22 47k QOUT16 C35 0.01F R33 0 12 SHDN 9 EN J7 QOUT+ J8 QOUTVCC
R1 0
R10 0
J3
REF
J1
IOUT+
J2
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IOUT-
R8 100 OPEN 10 9 8 VCC 7 SHDN 6 FILTERED VCC R14 5 DATA 100 EN 100 R18 3 CLK 100 LOCK C25 330pF 2 LOCK 1 VCC CLK C24 330pF R16 4 EN C23 330pF L6 270nH VCC C42 0.01F C12 330pF OPEN
Figure 2. MAX2314EV Kit Schematic (continued)
JU10 VCCA C27 10F C28 0.01F ICCA C37 0.01F C33 47pF JU11 VCCD ICCD C38 0.01F C34 47pF
SHDN
DATA
VCC
Evaluate: MAX2310/MAX2314
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GND
MAX2310/MAX2314 Evaluation Kits
7
MAX2310/MAX2314 Evaluation Kits Evaluate: MAX2310/MAX2314
1.0"
1.0"
Figure 3. MAX2310/MAX2314 EV Kit Component Side-- Layer 1
Figure 4. MAX2310/MAX2314 EV Kit Ground Plane--Layer 2
1.0"
Figure 5. MAX2310/MAX2314 EV Kit Inner Layer--Layer 3
8
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MAX2310/MAX2314 Evaluation Kits Evaluate: MAX2310/MAX2314
1.0"
1.0"
Figure 6. MAX2310/MAX2314 EV Kit Solder Side-- Layer 4
Figure 7. MAX2310/MAX2314 EV Kit Silk Screen
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9
MAX2310/MAX2314 Evaluation Kits Evaluate: MAX2310/MAX2314
INTF2300
Interface Board
The INTF2300 interface board is used to control the 3wire interface of a device under test from the parallel port of a PC. This board level translates 5V logic from the PC to VCC of the device under test. The INTF2300 also provides buffering and EMI filtering. The recommended operating supply voltage range is +2.7V to +3.6V. For operation of the MAX2310/MAX2314 above +3.6V, jumper JU1 may be removed and an external supply voltage of +3.6V may be applied between VCC (pin 2) and GND (pin 1) (Figure 8).
GND JU1 1 DB25M
VCC 2 3 1 1
TO PC PARALLEL PORT 6 20
10 INTF2300
10 DUT
MAX2310 MAX2314
VCCD 6 20
1 1
Figure 8. INTF2300 Interface Board
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.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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