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19-3136; Rev 0; 1/04
MAX2140 Evaluation Kit
General Description
The MAX2140 evaluation kit (EV kit) simplifies evaluation of the MAX2140 complete SDARS receiver IC. It enables testing of the device's RF performance and requires no additional support circuitry. The EV kit's signal inputs and outputs use SMA connectors to facilitate the connection of RF test equipment. Easy Evaluation of the MAX2140 +3.1V to +3.6V Single-Supply Operation Jumpers for Digital Power Control and Shutdown All Critical Peripheral Components Included PC Control Software Included
Features
Evaluates: MAX2140
Component Suppliers
SUPPLIER Alpha ATC CoilCraft Kayama Murata RF Monolithics PHONE 360-647-2360 949-583-9119 847-639-6400 219-489-1533 770-436-1300 800-737-6937 FAX 360-671-4936 949-583-9213 847-639-1469 219-489-2261 770-436-3030 972-387-8148
Ordering Information
PART TEMP RANGE IC PACKAGE 44 Thin QFN-EP* MAX2140EVKIT -40C to +85C *EP = Exposed paddle.
Component List
DESIGNATION C1, C2, C7, C27 C3, C4 C5, C6 C8, C10 C9, C11, C12, C14-C18, C32, C40, C41, C53, C76, C83, C84 C13, C19 C20, C23, C26, C31, C52 C21, C22, C42 C24 C25, C33, C34, C35, C37, C38, C43, C45, C46, C48, C49, C51 C28, C29 C30 QTY 4 2 2 2 Open 6.8pF 0.25pF 0402 capacitors Murata GRP1555C1H6R8C 47pF 5% 0603 capacitors Murata GRM1885C1H470J 10F tantalum capacitors AVX TAJR106K006 0.1F 10% 0603 capacitors Murata GRM188R71C104K Open 100pF 5% 0603 capacitors Murata GRM1885C1H101J Open 1000pF 10% 0603 capacitor Taiyo Yuden UMK107B102KZ-B 0.01F 10% 0603 capacitors Taiyo Yuden UMK107B103KZ-B 3.9pF 0.25pF 0603 capacitors Murata GRM1885C1H3R9C 0.22F 10% 0603 capacitor Murata C75 J1 12 L1 L4, L7, L9, L10 2 1 L5, L6 L8 1 1 1 4 2 1 DESCRIPTION DESIGNATION C47, C50 C56, C57 C59 C60, C61 C62 C63, C69, C79, C81, C82 C73 QTY 2 2 1 2 1 5 1 DESCRIPTION 2.2F 10% 0603 capacitors Murata 3.9pF 0.25pF 0603 capacitors Murata GRM1885C1H6R8D 100pF 5% 0603 capacitor Murata GRM1885C1H101J 47pF 5% 0402 capacitors Murata GRP1555C1H470J 22pF 1pF 0603 capacitor Murata 330pF 5% 0603 capacitors Murata GRM1885C1H331J 0.01F 10% 0805 capacitor Taiyo Yuden UMK212B103KQ-B 1.0F 20% 1206 capacitor Murata GRM31MR71C105MA01L DB25 M PC board CONN HD-20 SERIES 747238-4 Open 56nH 5% 0603 inductors Murata LQW18AN56NJ00D 68nH 5% 0603 inductors Murata LQG18HN68NJ00 33nH 5% 0603 inductor Murata LQW18AN33NJ00D
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________________________________________________________________ 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.
MAX2140 Evaluation Kit Evaluates: MAX2140
Component List (continued)
DESIGNATION L11 L12 L13 R1 R4, R12, R15, R20 R8, R9 R25, R26, R32, R33, R39 R30, R31, R40, R41 +5V, -5V, GND ADR1, ADR2, JU1, VCC QTY 1 1 1 1 4 2 5 4 3 DESCRIPTION 22nH 5% inductor 0603CS-22NXJBC 33nH, 25 0402 inductor Murata LQP15MN33NG00 Open 0 0603 resistor 51.1 0603 resistors Open 100 0603 resistors 5.1k 0603 resistors 2-pin headers Digi-Key 1 x 2 header S1012-36-ND Jumper blocks using 3-pin SIP headers Digi-Key 1 x 3 header S1012-36-ND 50 BNC PC board receptacles (jacks) Amphenol 31-5239-52RFX SMA end launch jack receptacles 0.062in Johnson 142-0701-801 U4 U5 1 1 259.861MHz saw filter RF Monolithics, Inc. SF2025B Low-dropout linear regulator MAX8877EUK28 Buffer/line driver Texas Instruments SN74LVTH244ADBR 2338.755MHz multilayer chip bandpass filter TOKO LTF3216BU-F2R3B Closed-loop buffer MAX4178EUK-T 23.92MHz crystal Epson Q24FA23H0000701 DESIGNATION LOCK, RFAGC, VINANT, VOUTANT TCL, TDA, TGND U1 U2, U3 QTY 4 DESCRIPTION Jumper blocks, 2-pin two 0.1in spacing 1 x 2 headers Digi-Key S1012-36-nd Jumper blocks, 2-pin 0.1in spacing Digi-Key 5000K-ND Maxim MAX2140ETH Differential to single-ended line receivers MAX4444ESE
3 1 2
U6
1
4
U7
1
I, Q JRFIN, PWM, REFIN, REF_TEST, SAWIN, SAWOUT
2
U8 Y2
1 1
6
Quick Start
The MAX2140 EV kit is fully assembled and factory tested. Follow the instructions in the Connections and Setup section for proper device evaluation.
* One RF power meter capable of measuring up to +20dBm of output power at the operating frequency (HP 437B, or equivalent) * An RF spectrum analyzer that covers the MAX2140 operating frequency range, as well as a few harmonics (FSEB20, for example) * A power supply capable of up to 1A at +2.7V to +6.0V * One ammeter for measuring the supply current (optional) * 50 SMA cables * A network analyzer (HP 8753D, for example) to measure small-signal return loss and gain (optional)
Test Equipment Required
This section lists the recommended test equipment to verify operation of the MAX2140. It is intended as a guide only, and some substitutions are possible: * One RF signal generator capable of delivering at least +5dBm of output power at the operating frequency (HPE4433B, or equivalent) * One RF power sensor capable of handling at least +20dBm of output power at the operating frequency (HP 8482A, or equivalent)
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MAX2140 Evaluation Kit
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 complete: 1) Connect two DC supplies set to 5V (through an ammeter if desired) to the +5V, -5V, and GND terminals on the EV kit. Do not turn on the supply. 2) Connect a DC supply set to 0V to the PWM terminals on the EV kit. Do not turn on the supply. 3) Connect one RF signal generator to the JRFIN SMA connector; do not turn on the generator's output. Set the power level to -91dBm. 4) Connect the I/Q output on the EV kit to a spectrum analyzer through an SMA cable. 5) Connect the EV board to the PC through a parallel cable. 6) Run the control software on an IBM-compatible PC. 7) Turn on the DC supply. The supply current should read approximately 150mA. 8) Activate the RF generator's output. 9) Check the I/Q outputs.
Evaluates: MAX2140
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 MAX2140. 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 MAX2140 data sheet for more information.
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MAX2140 Evaluation Kit Evaluates: MAX2140
Figure 1. MAX2140 EV Kit Schematic (Sheet 1 of 2) 4 _______________________________________________________________________________________
MAX2140 Evaluation Kit Evaluates: MAX2140
Figure 1. MAX2140 EV Kit Schematic (Sheet 2 of 2) _______________________________________________________________________________________ 5
MAX2140 Evaluation Kit Evaluates: MAX2140
1.0"
Figure 2. MAX2140 EV Kit Component Placement Guide-- Component Side
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Figure 3. MAX2140 EV Kit Component Placement Guide-- Secondary Side
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MAX2140 Evaluation Kit Evaluates: MAX2140
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Figure 4. MAX2140 EV Kit PC Board Layout--Layer 2
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Figure 5. MAX2140 EV Kit PC Board Layout--Layer 3
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MAX2140 Evaluation Kit Evaluates: MAX2140
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Figure 6. MAX2140 EV Kit PC Board Layout--Component Side
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Figure 7. MAX2140 EV Kit PC Board Layout--Secondary 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.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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