MAX2369EGM Datasheet, PDF (1/16 Pages) List of Unclassifed Manufacturers – Complete Dual-Band Quadrature Transmitter

19-1924; Rev 1; 10/01
Complete Dual-Band
Quadrature Transmitter
General Description
The MAX2369 is a dual-band, triple-mode complete
transmitter for cellular phones. The device takes a differ-
ential I/Q baseband input and mixes it up to IF through a
quadrature modulator and IF variable-gain amplifier
(VGA). The signal is then routed to an external bandpass
filter and upconverted to RF through an SSB mixer and
RF VGA. The signal is further amplified with an on-board
PA driver.
The MAX2369 is designed for dual-band operation and
supports TDMA for the PCS band as well as TDMA and
AMPS for the cellular band. The desired mode of
operation is selected by loading data on the SPI™/
MICROWIRE™-compatible 3-wire serial bus. The
MAX2369 then routes the signals to the appropriate ports
depending on which band is selected. The MAX2369
includes two RF LO input ports and two PA driver ports,
eliminating the need for external switching circuitry.
The MAX2369 takes advantage of the serial bus to set
modes such as charge-pump current, high or low side-
band injection, and IF/RF gain balancing. It is packaged
in a small (7mm ✕ 7mm) 48-pin QFN package with
exposed paddle.
Applications
Dual-Band TDMA/Amps Handsets
GAIT Handsets
Triple-Mode, Dual-Mode, or Single-Mode
Mobile Phones
Satellite Phones
Wireless Data Links (WAN/LAN)
Wireless Local Area Networks (LANs)
High-Speed Data Modems
High-Speed Digital Cordless Phones
Wireless Local Loop (WLL)
Pin Configuration appears at end of data sheet.
Selector Guide appears at end of data sheet.
Features
o Dual-Band, Triple-Mode Operation
o +7dBm Output Power with -34dBc ACPR
(NADC Modulation)
o 100dB Power Control Range
o Supply Current Drops as Output Power Is Reduced
o On-Chip IF VCO and IF PLL
o QSPI/SPI/MICROWIRE-Compatible 3-Wire Bus
o Digitally Controlled Operational Modes
o +2.7V to +5.5V Operation
o Single Sideband Upconverter Eliminates SAW
Filters
o Power Control Distributed at IF and RF for
Optimum Dynamic Range
PART
MAX2369EGM
*Exposed paddle
Ordering Information
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
48 QFN-EP*
Functional Diagram
RFL 1
RFH 2
LOCK 3
V_CC 4
V_CC 5
V_CC 6
TXGATE 7
IFIN+ 8
IFIN- 9
N.C. 10
N.C. 11
R_BIAS 12
Σ
90
0
+45
-45
IFPLL
MAX2369
/2
Σ ^{0 90 /2}
36 REF
35 N.C.
34 N.C.
33 N.C.
32 N.C.
31 TANK+
30 TANK-
29 IFLO
28 V_CC
27 SHDN
26 I-
25 I+
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products 1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.