MAX2338 Datasheet, PDF (1/13 Pages) Maxim Integrated Products – Triple/Dual-Mode CDMA LNA/Mixers

19-1807; Rev 1; 3/01
EVAALVUAAILTAIOBNLEKIT ^{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
VCO for both bands. This device is available in an ultra-
small 28-pin leadless QFN package.
________________________Applications
Dual-Band, Triple-Mode PCS/Cellular Phones
Dual-Mode Cellular Phones
Typical Operating Circuit appears at end of data sheet.
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
PART
MAX2338EGI
Ordering Information
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
28 QFN
TOP VIEW
Pin Configuration/
Functional Diagram
28 27 26 25 24 23 22
RLNA 1
PLNAIN 2
GND 3
CLNAIN 4
BAND 5
LIN 6
GAIN ₇
MAX2338
÷2
21 RBIAS
20 IF+
19 IF-
18 GND
17 BUFFEN
16 VCC
15 FMOUT
8 9 10 11 12 13 14
QFN
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