MAX2021ETX+ Maxim Integrated Products, MAX2021ETX+ Datasheet

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MAX2021ETX+

Manufacturer Part Number
MAX2021ETX+
Description
Modulator / Demodulator IC MOD/DEMOD irect Up-/Downconver
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX2021ETX.pdf (14 pages)

Specifications of MAX2021ETX+

Maximum Operating Temperature
+ 85 C
Maximum Power Dissipation
1355 mW
Minimum Operating Temperature
- 40 C
Modulation Type
Quadrature
Mounting Style
SMD/SMT
Operating Supply Voltage
4.75 V to 5.25 V
Supply Current
271 mA
Package / Case
QFN-36
Output Power
0.7 dBm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The MAX2021 low-noise, high-linearity, direct upcon-
version/downconversion quadrature modulator/demod-
ulator is designed for RFID handheld and portal
readers, as well as single and multicarrier 750MHz to
1200MHz GSM/EDGE, cdma2000
iDEN
architectures are advantageous since they significantly
reduce transmitter or receiver cost, part count, and
power consumption as compared to traditional IF-based
double conversion systems.
In addition to offering excellent linearity and noise perfor-
mance, the MAX2021 also yields a high level of compo-
nent integration. This device includes two matched
passive mixers for modulating or demodulating in-phase
and quadrature signals, two LO mixer amplifier drivers,
and an LO quadrature splitter. On-chip baluns are also
integrated to allow for single-ended RF and LO connec-
tions. As an added feature, the baseband inputs have
been matched to allow for direct interfacing to the trans-
mit DAC, thereby eliminating the need for costly I/Q
buffer amplifiers.
The MAX2021 operates from a single +5V supply. It is
available in a compact 36-pin thin QFN package (6mm
x 6mm) with an exposed paddle. Electrical perfor-
mance is guaranteed over the extended -40°C to
+85°C temperature range.
19-3918; Rev 0; 3/06
cdma2000 is a registered trademark of Telecommunications
Industry Association.
iDEN is a registered trademark of Motorola, Inc.
cdmaOne is a trademark of CDMA Development Group.
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.
High-Dynamic-Range, Direct Up-/Downconversion
RFID Handheld and Portal Readers
Single and Multicarrier WCDMA 850 Base Stations
Single and Multicarrier cdmaOne™ and cdma2000
Base Stations
GSM 850/GSM 900 EDGE Base Stations
Predistortion Transmitters and Receivers
WiMAX Transmitters and Receivers
Fixed Broadband Wireless Access
Military Systems
Microwave Links
Digital and Spread-Spectrum Communication
Systems
Video-on-Demand (VOD) and DOCSIS Compliant
Edge QAM Modulation
Cable Modem Termination Systems (CMTS)
®
base-station applications. Direct conversion
750MHz to 1200MHz Quadrature Mod/Demod
________________________________________________________________ Maxim Integrated Products
General Description
Applications
®
, WCDMA, and
♦ 750MHz to 1200MHz RF Frequency Range
♦ Scalable Power: External Current-Setting
♦ 36-Pin, 6mm x 6mm TQFN Provides High Isolation
Modulator Operation:
♦ Meets 4-Carrier WCDMA 65dBc ACLR
♦ +21dBm Typical OIP3
♦ +58dBm Typical OIP2
♦ +16.7dBm Typical OP
♦ -32dBm Typical LO Leakage
♦ 43.5dBc Typical Sideband Suppression
♦ -174dBm/Hz Output Noise Density
♦ DC to 300MHz Baseband Input Allows a Direct
♦ DC-Coupled Input Allows Ability for Customer
Demodulator Operation:
♦ +35.2dBm Typical IIP3
♦ +76dBm Typical IIP2
♦ > 30dBm IP
♦ 9.2dB Typical Conversion Loss
♦ 9.3dB Typical NF
♦ 0.06dB Typical I/Q Gain Imbalance
♦ 0.15° I/Q Typical Phase Imbalance
*EP = Exposed paddle.
-T = Tape-and-reel package.
MAX2021ETX
MAX2021ETX-T
MAX2021ETX+
MAX2021ETX+T -40°C to +85°C
Resistors Provide Option for Operating Device in
Reduced-Power/Reduced-Performance Mode
in a Small Package
Launch DAC Interface, Eliminating the Need for
Costly I/Q Buffer Amplifiers
Offset Voltage Control
PART
1dB
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
+ = Lead free.
1dB
36 Thin QFN-EP*
36 Thin QFN-EP*
36 Thin QFN-EP*
36 Thin QFN-EP*
PIN-PACKAGE
(6mm x 6mm)
(6mm x 6mm)
(6mm x 6mm)
(6mm x 6mm)
Features
T3666-2
T3666-2
T3666-2
T3666-2
CODE
PKG
1

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MAX2021ETX+ Summary of contents

Page 1

... Typical Conversion Loss ♦ 9.3dB Typical NF ♦ 0.06dB Typical I/Q Gain Imbalance ♦ 0.15° I/Q Typical Phase Imbalance PART MAX2021ETX MAX2021ETX-T MAX2021ETX+ MAX2021ETX+T -40°C to +85°C *EP = Exposed paddle Tape-and-reel package. Features 1dB 1dB Ordering Information TEMP RANGE PIN-PACKAGE ...

Page 2

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod ABSOLUTE MAXIMUM RATINGS VCC_ to GND ........................................................-0.3V to +5.5V BBI+, BBI-, BBQ+, BBQ- to GND...............-3. LO GND Maximum Current ......................................30mA RF Input Power ...............................................................+30dBm Baseband Differential I/Q Input ...

Page 3

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod AC ELECTRICAL CHARACTERISTICS (Modulator) (continued) (MAX2021 Typical Application Circuit 0dBm, 750MHz ≤ f source, 0V common-mode input 332Ω -40°C to +85°C. Typical values are ...

Page 4

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod (MAX2021 Typical Application Circuit 0dBm, 750MHz ≤ f source, 0V common-mode input 332Ω -40°C to +85°C. Typical values are ...

Page 5

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod (MAX2021 Typical Application Circuit 0dBm, 750MHz ≤ f source, 0V common-mode input 332Ω -40°C to +85°C. Typical values are ...

Page 6

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod (MAX2021 Typical Application Circuit 0dBm, 750MHz ≤ f source, 0V common-mode input 332Ω -40°C to +85°C. Typical values are ...

Page 7

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod (MAX2021 Typical Application Circuit, V source, 0V common-mode input 5dBm 619Ω 332Ω -40°C to +85°C. Typical values are DEMODULATOR ...

Page 8

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod PIN NAME 1, 5, 9–12, 14, 16–19, 22, GND 24, 27–30, 32, 34, 35 RBIASLO3 3rd LO Amplifier Bias. Connect a 332Ω resistor to ground. 3 VCCLOA ...

Page 9

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod signals to compensate for any changes in LO drive lev- els. The two-stage LO amplifier allows a wide input power range for the LO drive. The MAX2021 can toler- ate LO level ...

Page 10

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod The MAX5895 DAC has programmable gain and differ- ential offset controls built in. These can be used to opti- mize the LO leakage and sideband suppression of the MAX2021 quadrature modulator. The ...

Page 11

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod Table 1. Typical Performance Trade-Offs as a Function of Current Draw—Modulator Mode LO FREQ RF FREQ R1 (Ω Ω Ω Ω ) (MHz) (MHz) 420 453 800 801.8 499 549 650 420 ...

Page 12

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod Table 2. Typical Performance Trade-Offs as a Function of Current Draw—Demodulator Mode LO FREQ RF FREQ R1 (Ω Ω Ω Ω ) (MHz) (MHz) 420 453 800 771 499 549 650 420 ...

Page 13

High-Dynamic-Range, Direct Up-/Downconversion 750MHz to 1200MHz Quadrature Mod/Demod GND RBIASLO3 VCCLOA GND RBIASLO1 N.C. RBIASLO2 GND ______________________________________________________________________________________ Pin Configuration/Functional Diagram BIAS 2 LO3 3 90° 0° 5 BIAS 6 LO1 ...

Page 14

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2006 Maxim Integrated Products C12 C13 0.1μ ...

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