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19-1807; Rev 2; 4/03
ATION
EVALU
AVAIL
KIT
ABLE
Triple/Dual-Mode CDMA LNA/Mixers
General Description
The MAX2338 receiver RF front-end IC is designed for
dual-band CDMA cellular phones and can also be used
in dual-band TDMA, GSM, or EDGE cellular phones.
Thanks to the MAX2338 ’s on-chip low-power LO
divider, the cellular VCO module can be eliminated.
The MAX2338 includes a low-noise amplifier (LNA) with
an adjustable high-input third-order intercept point
(IIP3) to minimize intermodulation and cross-modulation
in the presence of large interfering signals. For cellular
band operation, a low-gain LNA is available for higher
cascaded IIP3 at lower current.
The CDMA mixers are designed for high linearity, low
noise, and differential IF outputs. The FM mixer is
designed for lower current and single-ended output.
The MAX2338 triple-mode LNA/mixer includes an on-
chip LO frequency divider to allow the use of a single
Features
o 1.4dB LNA Noise Figure
o 15dB LNA Gain
o Mixer Noise Figure
7.5dB (CDMA)
8.7dB (AMPS)
o Mixer Gain
14.5dB PCS
13.3dB Cellular
8.8dB AMPS
o LO Frequency Divider, Saves VCO Module
o LO Output Buffers for TX
o Ultra-Small 28-Pin Leadless Package
VCO for both bands. This device is available in an ultra-
small 28-pin leadless QFN package.
Ordering Information
________________________Applications
PART
MAX2338EGI
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
28 QFN
Dual-Band, Triple-Mode PCS/Cellular Phones
Dual-Mode Cellular Phones
Pin Configuration/
Functional Diagram
Typical Operating Circuit appears at end of data sheet.
TOP VIEW
28
27
26
25
24
23
22
RLNA 1
PLNAIN 2
GND 3
CLNAIN 4
21 RBIAS
20 IF+
19 IF-
18 GND
BAND 5
LIN 6
GAIN 7
MAX2338
÷ 2
17 BUFFEN
16 V CC
15 FMOUT
8
9
10
11
12
13
14
QFN
________________________________________________________________ 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.
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