Rainbow Electronics MAX2327 User Manual

General description, Applications, Features

General Description

The MAX2320/MAX2321/MAX2322/MAX2324/MAX2326/
MAX2327 high-performance silicon germanium (SiGe)
receiver front-end ICs set a new industry standard for
low noise and high linearity at a low supply current. This
family integrates a variety of unique features such as an
LO frequency doubler and divider, dual low-noise
amplifier (LNA) gain settings, and a low-current paging
mode that extends the handset standby time.

The MAX2320 family includes six ICs: four operate at
both cellular and PCS frequencies, one operates at cel-
lular frequencies, and one at PCS frequencies (see
Selector Guide). Each part includes an LNA with a high
input third-order intercept point (IIP3) to minimize inter-
modulation and cross-modulation in the presence of
large interfering signals. In low-gain mode, the LNA is
bypassed to provide higher cascaded IIP3 at a lower
current. For paging, a low-current, high-gain mode is
provided.

The CDMA mixers in cellular and PCS bands have high
linearity, low noise, and differential IF outputs. The FM
mixer is designed for lower current and a single-ended
output.

All devices come in a 20-pin TSSOP-EP package with
exposed paddle (EP) and are specified for the extend-
ed temperature range (-40°C to +85°C).

Applications

CDMA/TDMA/PDC/WCDMA/GSM Cellular Phones

Single/Dual/Triple-Mode Phones

Wireless Local Loop (WLL)

Features

♦ Ultra-High Linearity at Ultra-Low Current and

Noise

♦ +2.7V to +3.6V Operation
♦ Pin-Selectable Low-Gain Mode Reduces Gain by

17dB and Current by 3mA

♦ Pin-Selectable Paging Mode Reduces Current

Draw by 6mA when Transmitter Is Not in Use

♦ LO Output Buffers
♦ LO Frequency Doubler (MAX2321)
♦ LO Frequency Divider (MAX2326)
♦ 0.1µA Shutdown Current
♦ 20-Pin TSSOP-EP Package

MAX2320/21/22/24/26/27

Adjustable, High-Linearity,

SiGe Dual-Band LNA/Mixer ICs

________________________________________________________________ Maxim Integrated Products

MIXINH

MIXINL

RBIAS

CDMA+

LNAINH

RLNA

20 TSSOP-EP

6mm x 6.3mm

LNAOUTL

LNAOUTH

TOP VIEW

CDMA-

BUFFEN

FMOUT

GAIN

LIN

BAND

LNAINL

LOLOUT

LOHOUT

LOHIN

LOLIN

MAX2320
MAX2321
MAX2326

TSSOP

19-1535; Rev 1; 6/00

PART

MAX2320EUP

MAX2321EUP

MAX2322EUP

-40°C to +85°C

TEMP. RANGE

PIN-PACKAGE

20 TSSOP-EP

EVALUATION KIT MANUAL

FOLLOWS DATA SHEET

Typical Application Circuits appear at end of data sheet.

Pin Configurations continued at end of data sheet.

Pin Configurations

Ordering Information

MAX2324EUP

MAX2326EUP

MAX2327EUP

-40°C to +85°C

20 TSSOP-EP

PCS band, single mode with optional frequency
doubler

MAX2322

MAX2320 with LO doubler

Dual-band, dual VCO inputs, and dual IF outputs

MAX2320

MAX2321

DESCRIPTION

PART

Selector Guide

Dual-band, dual VCO inputs, and separately
controlled VCO buffers

MAX2327

MAX2320 with LO divider

Cellular band, dual IF outputs

MAX2324

MAX2326

For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.