MAX2685_1 Datasheet, PDF (1/6 Pages) Maxim Integrated Products – Evaluation Kit

19-1493; Rev 0; 7/99
MAX2685 Evaluation Kit
General Description
The MAX2685 evaluation kit (EV kit) simplifies testing of
the MAX2685. This EV kit allows evaluation of the low-
noise amplifier (LNA) as well as the downconverter
mixer.
Component List
DESIGNATION QTY
DESCRIPTION
C1, C3, C5,
C17
4 0.1µF ceramic capacitors
C2, C14, C15 0 Not installed
C4, C8
2 47pF ceramic capacitors
C6, C7, C10 2 330pF ceramic capacitors
C9
1 3.3pF ceramic capacitor
C11, C18
2 6pF ±0.1pF ceramic capacitors
C12
1 1000pF ceramic capacitor
C13
1 12pF ±0.1pF ceramic capacitor
C16
1
10µF tantalum capacitor
AVX TAJC106K016
L1
1
12nH inductor
Toko LL1608-SH12NK
L2
1
680nH ±5% inductor
Coilcraft 1008CS-681XJBC 5%
L3
1
820nH ±5% inductor
Coilcraft 1008CS-821XJBC 5%
L4
R1, R2
R3
R4
R5
R6, R7, R8
1 Not installed
2 1kΩ resistors
1 75Ω resistor
1 15kΩ resistor
1 0Ω resistor
3 Not installed
IFOUT+,
IFOUT-, LNAIN,
LNAOUT, LO,
6
MIXIN
SMA connectors (PC edge mount)
JU1, JU2
GND, V_CC
U1
None
2 3-pin headers
2 Eyelets
1 MAX2685EEE (16-pin QSOP)
1 MAX2685 PC board
Features
o +2.7V to +5.5V Single-Supply Operation
o 50Ω SMA Inputs and Outputs
o Fully Assembled and Tested
o Allows Testing of All Device Functions
PART
MAX2685EVKIT
Ordering Information
TEMP. RANGE
-40°C to +85°C
IC PACKAGE
16 QSOP
_________________________Quick Start
The MAX2685 EV kit is 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 equipment recommended for veri-
fying the MAX2685’s operation. It is intended as a
guide only; some substitutions are possible.
• Two RF signal generators capable of delivering at
least 0dBm of output power at frequencies to 2GHz
(HP 8648C or equivalent). One generator is required
for the local oscillator (LO) source; the other is
required for the mixer and LNA RF input. Only one
generator is required to operate the LNA.
• An RF spectrum analyzer that covers the MAX2685’s
operating frequency range (the HP 8561E, for exam-
ple).
• A power supply that can provide up to 100mA at
+2.7V to +5.5V.
• An ammeter for measuring the supply current
(optional).
• Several 50Ω SMA cables.
Connections and Setup
This step-by-step guide explains how to get the EV kit
operational and how to evaluate both the LNA and the
downconverter mixer.
________________________________________________________________ Maxim Integrated Products 1
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