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MAX2338 Datasheet

  • MAX2338

  • Triple/Dual-Mode CDMA LNA/Mixers

  • Maxim   Maxim

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19-1807; Rev 1; 3/01
KIT
ATION
EVALU
E
BL
AVAILA
Triple/Dual-Mode CDMA LNA/Mixers
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
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鈥檚 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.
MAX2338
Ordering Information
________________________Applications
Dual-Band, Triple-Mode PCS/Cellular Phones
Dual-Mode Cellular Phones
PART
MAX2338EGI
TEMP RANGE
-40擄C to +85擄C
PIN-PACKAGE
28 QFN
Pin Configuration/
Functional Diagram
CLNAOUT
CMIXIN
22
PMIXIN
23
TOP VIEW
PLNAOUT
Typical Operating Circuit appears at end of data sheet.
GND
GND
25
28
27
26
RLNA 1
PLNAIN 2
GND 3
CLNAIN 4
BAND 5
LIN 6
GAIN 7
GND
24
21 RBIAS
20 IF+
19 IF-
18 GND
MAX2338
梅2
17 BUFFEN
16 V
CC
15 FMOUT
8
GND
9
LO/2
10
LOIN
11
GND
12
PLOOUT
13
CLOOUT
14
N.C.
QFN
________________________________________________________________
Maxim Integrated Products
1
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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