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MAX2009 Datasheet

  • MAX2009

  • 1200MHz至2500MHz可調(diào)的RF前饋預(yù)失真器

  • 525.62KB

  • 19頁

  • MAXIM   MAXIM

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19-2929; Rev 0; 8/03
1200MHz to 2500MHz Adjustable
RF Predistorter
General Description
The MAX2009 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鈥檚 gain and
phase compression. With its +23dBm maximum input
power level and wide adjustable range, the MAX2009
can provide up to 12dB of ACPR improvement for
power amplifiers operating in the 1200MHz to 2500MHz
frequency band. Lower frequencies of operation can be
achieved with this IC鈥檚 counterpart, the MAX2010.
The MAX2009 is unique in that it provides up to 7dB of
gain expansion and 24擄 of phase expansion as the
input power is increased. The amount of expansion is
configurable through two independent sets of control:
one set adjusts the gain expansion breakpoint
and slope, while 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 soft-
ware-controlled distortion correction. Hybrid correction
modes are also possible using simple lookup tables to
compensate for factors such as PA temperature drift
or PA loading.
The MAX2009 comes in a 28-pin thin QFN exposed
pad (EP) package (5mm x 5mm) and is specified for
the extended (-40擄C to +85擄C) temperature range.
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Features
Up to 12dB ACPR Improvement*
Independent Gain and Phase Expansion Controls
Gain Expansion Up to 7dB
Phase Expansion Up to 24擄
1200MHz to 2500MHz Frequency Range
Exceptional Gain and Phase Flatness
Group Delay <1.3ns (Gain and Phase Sections
Combined)
鹵0.04ns
Group Delay Ripple Over a 100MHz Band
Capable of Handling Input Drives Up to +23dBm
On-Chip Temperature Variation Compensation
Single +5V Supply
Low Power Consumption: 75mW (typ)
Fully Integrated into Small 28-Pin Thin QFN
Package
MAX2009
*Performance
dependent on amplifier, bias, and modulation.
Ordering Information
PART
MAX2009ETI-T
TEMP RANGE
-40擄C to +85擄C
PIN-PACKAGE
28 Thin QFN-EP*
*EP
= Exposed paddle.
Applications
WCDMA/UMTS, cdma2000, DCS1800, and
PCS1900 Base Stations
Feed-Forward PA Architectures
Digital Baseband Predistortion Architectures
Military Applications
WLAN Applications
GND*
ING
GND*
GND*
OUTP
GND*
2
3
4
5
6
7
8
GND*
9
INP
10
GND*
GND*
1
OUTG
GND*
GND*
Functional Diagram/
Pin Configuration
GND*
22
21 V
CCG
GAIN
CONTROL
20 GND*
19 PBRAW
18 PBEXP
17 PBIN
PHASE
CONTROL
16 GND*
15 V
CCP
11
PFS1
12
PFS2
13
PDCS1
14
PDCS2
GCS
GBP
23
GFS
24
28
27
26
25
MAX2009
*INTERNALLY CONNECTED TO EXPOSED GROUND PADDLE.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

MAX2009 PDF文件相關(guān)型號

MAX2009ETI-T

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