MAX2310 Datasheet, PDF (1/22 Pages) Maxim Integrated Products – CDMA IF VGAs and I/Q Demodulators with VCO and Synthesizer

19-1507; Rev 1; 3/03
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CDMA IF VGAs and I/Q Demodulators
with VCO and Synthesizer
General Description
The MAX2310/MAX2312/MAX2314/MAX2316 are IF
receivers designed for dual-band, dual-mode, and sin-
gle-mode N-CDMA and W-CDMA cellular phone sys-
tems. The signal path consists of a variable gain
amplifier (VGA) and I/Q demodulator. The devices fea-
ture guaranteed +2.7V operation, a dynamic range of
over 110dB, and high input IP3 (-33dBm at 35dB gain,
1.7dBm at -35dB).
Unlike similar devices, the MAX2310 family of receivers
includes dual oscillators and synthesizers to form a
self-contained IF subsystem. The synthesizer’s refer-
ence and RF dividers are fully programmable through a
3-wire serial bus, enabling dual-band system architec-
tures using any common reference and IF frequency.
The differential baseband outputs have enough band-
width to suit both N-CDMA and W-CDMA systems, and
offer saturated output levels of 2.7Vp-p at a low +2.75V
supply voltage. Including the low-noise voltage-con-
trolled oscillator (VCO) and synthesizer, the MAX2310
draws only 26mA from a +2.75V supply in CDMA (dif-
ferential IF) mode.
The MAX2310/MAX2312/MAX2314/MAX2316 are avail-
able in 28-pin QSOP packages.
Applications
Single/Dual/Triple-Mode CDMA Handsets
Globalstar Dual-Mode Handsets
Wireless Data Links
Tetra Direct-Conversion Receivers
Wireless Local Loop (WLL)
Features
o Complete IF Subsystem Includes VCO and
Synthesizer
o Supports Dual-Band, Triple-Mode Operation
o VGA with >110dB Gain Control
o Quadrature Demodulator
o High Output Level (2.7V)
o Programmable Charge-Pump Current
o Supports Any IF Frequency Between 40MHz and
300MHz
o 3-Wire Programmable Interface
o Low Supply Voltage (+2.7V)
Ordering Information
PART
MAX2310EEI
MAX2312EEI
MAX2314EEI
MAX2316EEI
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
28 QSOP
28 QSOP
28 QSOP
28 QSOP
Pin Configurations appear at end of data sheet.
Block Diagram appears at end of data sheet.
Selector Guide
PART
MAX2310
MAX2312
MAX2314
MAX2316
MODE
AMPS,
Cellular CDMA,
PCS CDMA
PCS CDMA
AMPS,
Cellular CDMA
Cellular CDMA
DESCRIPTION
Dual Band, Triple Mode
Single Band, Single Mode
Single Band, Dual Mode
Single Band, Single Mode or
Single Band, Dual Mode with
External Discriminator
INPUT RANGE
40MHz to 300MHz
67MHz to 300MHz
40MHz to 150MHz
40MHz to 150MHz
________________________________________________________________ Maxim Integrated Products 1
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.