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19-2930; Rev 0; 8/03
500MHz to 1100MHz Adjustable
RF Predistorter
General Description
Features
The MAX2010 adjustable RF predistorter is designed to
improve power amplifier (PA) adjacent-channel power
rejection (ACPR) by introducing gain and phase expan-
sion in a PA chain to compensate for the PA’s gain and
phase compression. With its +23dBm maximum input
power level and wide adjustable range, the MAX2010
can provide up to 12dB of ACPR improvement for
power amplifiers operating in the 500MHz to 1100MHz
frequency band. Higher frequencies of operation can
be achieved with this IC’s counterpart, the MAX2009.
The MAX2010 is unique in that it provides up to 6dB of
gain expansion and 21 ° of phase expansion as the input
power is increased. The amount of expansion is config-
urable through two independent sets of control: one set
adjusts the gain expansion breakpoint and slope, while
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Up to 12dB ACPR Improvement*
Independent Gain and Phase Expansion Controls
Gain Expansion Up to 6dB
Phase Expansion Up to 21°
500MHz to 1100MHz Frequency Range
Exceptional Gain and Phase Flatness
Group Delay <2.4ns (Gain and Phase Sections
Combined)
± 0.03ns Group Delay Ripple Over a 100MHz Band
Capable of Handling Input Drives Up to +23dBm
On-Chip Temperature Variation Compensation
Single +5V Supply
the second set controls the same parameters for phase.
With these settings in place, the linearization circuit can
be run in either a static set-and-forget mode, or a more
sophisticated closed-loop implementation can be
employed with real-time software-controlled distortion
correction. Hybrid correction modes are also possible
using simple lookup tables to compensate for factors
o Low Power Consumption: 75mW (typ)
o Fully Integrated into Small 28-Pin Thin QFN
Package
* Performance dependent on amplifier, bias, and modulation.
Ordering Information
such as PA temperature drift or PA loading.
The MAX2010 comes in a 28-pin thin QFN exposed
pad (EP) package (5mm x 5mm) and is specified for
the extended (-40°C to +85°C) temperature range.
PART
MAX2010ETI-T
* EP = Exposed paddle.
TEMP RANGE
-40 ° C to +85 ° C
PIN-PACKAGE
28 Thin QFN-EP*
Applications
cdma2000?, GSM/EDGE, and iDEN Base Stations
Feed-Forward PA Architectures
Functional Diagram/
Pin Configuration
Digital Baseband Predistortion Architectures
28
27
26
25
24
23
22
Military Applications
GND*
1
21 V CCG
GAIN
GND*
ING
GND*
GND*
OUTP
GND*
2
3
4
5
6
7
MAX2010
CONTROL
PHASE
CONTROL
20 GND*
19 PBRAW
18 PBEXP
17 PBIN
16 GND*
15 V CCP
8
9
10
11
12
13
14
cdma2000 is a trademark of Telecommunications Industry
Assoc.
*INTERNALLY CONNECTED TO EXPOSED GROUND PADDLE.
________________________________________________________________ Maxim Integrated Products
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.
1
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