19-2691; Rev 0; 12/02
MAX9981 Evaluation Kit
General Description
The MAX9981 evaluation kit (EV kit) simplifies the evalu-
ation of the MAX9981 825MHz to 915MHz dual high-lin-
earity active down-converter mixer. It is fully assembled
and tested at the factory. Standard 50鈩?SMA connec-
tors are included for the inputs and outputs to allow
quick and easy evaluation on the test bench.
This document provides a list of equipment required to
evaluate the device, a straightforward test procedure to
verify functionality, a description of the EV kit circuit,
the circuit schematic, a bill of materials (BOM) and art-
work for each layer of the PC board.
Contact MaximDirect sales at 888-629-4642 to check
on pricing and availability for these kits.
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Features
Fully Assembled and Tested
+27.3dBm Input IP3
+13.6dBm Input 1dB Compression Point
825MHz to 915MHz RF Frequency
725MHz to 1085MHz LO Frequency
70MHz to 170MHz IF Frequency
2.1dB Conversion Gain
10.8dB Noise Figure
42dB Channel-to-Channel Isolation
-5dBm to +5dBm LO Drive
Built-In LO Switch with 52dB LO1-to-LO2 Isolation
Evaluates: MAX9981
Component Suppliers
SUPPLIER
Coilcraft
Digi-Key
Johnson
Mini-Circuits
Murata
PHONE
WEBSITE
PART
MAX9981EVKIT
800-322-2645 www.coilcraft.com
800-344-4539 www.digikey.com
507-833-8822 www.johnsoncomponents.com
718-934-4500 www.minicircuits.com
770-436-1300 www.murata.com
Ordering Information
TEMP RANGE
-40擄C to +85擄C
IC PACKAGE
36 QFN-EP*
(6mm
脳
6mm)
*EP
= Exposed paddle.
Component List
DESIGNATION
C1, C4
QTY
2
DESCRIPTION
33pF 鹵5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H330J
3.9pF 鹵0.25pF, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H3R9C
100pF 鹵5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H101J
15pF 鹵5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H150J
0.033碌F 鹵10%, 25V X7R ceramic
capacitors (0603)
Murata GRM188R71E333K
220pF 鹵5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H221J
330pF 鹵5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H331J
DESIGNATION
L1鈥揕4
R1, R2
R3鈥揜6
R7
J1鈥揓6
QTY
4
2
4
1
6
DESCRIPTION
560nH 鹵5% wire-wound
inductors (1008)
Coilcraft 1008CS-561XJBC
267鈩?鹵1% resistors (0603)
137鈩?鹵1% resistors (0603)
47k鈩?鹵5% resistor (0603)
PC board edge-mount SMA RF
connectors (flat tab launch)
Johnson 142-0741-856
4:1 transformers (200:50)
Mini-Circuits TC4-1W-7A
Large test point for 0.063in PC board
(red) Mouser 151-107
Large test point for 0.063in PC board
(black) Mouser 151-103
Large test point for 0.063in PC board
(white) Mouser 151-101
MAX9981EGX-T*
C2, C3
2
C5, C6,
C9, C10
4
C7, C8
2
T1, T2
TP1
TP2
TP3
U1
1
1
1
1
1
C11, C12
2
C13, C16,
C17, C20
C14, C15,
C18, C19
4
4
*The
exposed paddle conductor on U1 must be solder
attached to a grounded pad on the circuit to ensure a proper
electrical/thermal design.
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________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
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