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MAX2368

Description
Complete Dual-Band Quadrature Transmitters
File Size274KB,22 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
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MAX2368 Overview

Complete Dual-Band Quadrature Transmitters

19-1780; Rev 0; 7/00
KIT
ATION
EVALU
E
BL
AVAILA
Complete Dual-Band
Quadrature Transmitters
General Description
Features
o
Dual-Band, Triple-Mode Operation
o
+7dBm Output Power with -54dBc ACPR
o
100dB Power Control Range
o
Supply Current Drops as Output Power Is Reduced
o
Dual Synthesizer for IF and RF LO
o
Dual On-Chip IF VCO
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
MAX2366/MAX2367/MAX2368
The MAX2366 dual-band, triple-mode complete transmit-
ter for cellular phones represents the most integrated and
architecturally advanced solution to date for this applica-
tion. The device takes a differential 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. Dual IF synthesiz-
ers, dual RF synthesizers, a local oscillator (LO) buffer,
and a 3-wire programmable bus complete the basic func-
tional blocks of this IC. The MAX2367 supports single-
band, single-mode (PCS) operation. The MAX2368
supports single-band cellular dual-mode operation.
The MAX2366 enables architectural flexibility because
its two IF voltage-controlled oscillators (VCOs), two IF
ports, two RF LO input ports, and three PA driver output
ports allow the use of a single receive IF frequency and
split-band PCS filters for optimum out-of-band noise
performance. The PA drivers allow up to three RF SAW
filters to be eliminated. Select a mode of operation by
loading data on the SPI
/QSPI
/MICROWIRE
-com-
patible 3-wire serial bus. Charge-pump current, side-
band rejection, IF/RF gain balancing, standby, and
shutdown are also controlled with the serial interface.
The MAX2366/MAX2367/MAX2368 come in a 48-pin
QFN-EP package and are specified for the extended
(-40°C to +85°C) temperature range.
Ordering Information
PART
MAX2366EGM
MAX2367EGM
MAX2368EGM
*Exposed paddle
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
48 QFN-EP*
48 QFN-EP*
48 QFN-EP*
Functional Diagram
RFPLL
V
CC
RFCP
V
CC
42
41
40
39
RFPLL
IFPLL
GND
RFH1
GND
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 Configurations appear at end of data sheet.
Selector Guide appears at end of data sheet.
RFL
RFH0
LOCK
V
CC
IDLE
V
CC
TXGATE
IFINL+
IFINL-
IFINH+
IFINH-
R
BIAS
1
2
3
4
5
6
7
8
9
10
11
12
48
47
46
45
44
43
38
37
IFCP
V
CC
GND
LOL
LOH
Applications
36
35
34
33
32
31
MAX2366
Σ
90
0
-45
-45
/2
30
29
28
0
Σ
90 /2
27
26
25
REF
N.C.
N.C.
TANKH+
TANKH-
TANKL+
TANKL-
IFLO
V
CC
SHDN
I-
I+
13
14
15
16
17
18
19
20
21
22
23
CS
IFOUTH-
IFOUTH+
IFOUTL+
IFOUTL-
VGC
CLK
DI
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
________________________________________________________________
Maxim Integrated Products
V
CC
V
CC
Q+
Q-
24
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.

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