max2010etit Maxim Integrated Products, Inc., max2010etit Datasheet

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max2010etit

Manufacturer Part Number
max2010etit
Description
Max2010 500mhz To 1100mhz Adjustable Rf Predistorter
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
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
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
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.
19-2930; Rev 0; 8/03
cdma2000 is a trademark of Telecommunications Industry
Assoc.
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.
cdma2000™, GSM/EDGE, and iDEN Base Stations
Feed-Forward PA Architectures
Digital Baseband Predistortion Architectures
Military Applications
________________________________________________________________ Maxim Integrated Products
General Description
Applications
500MHz to 1100MHz Adjustable
o Up to 12dB ACPR Improvement*
o Independent Gain and Phase Expansion Controls
o Gain Expansion Up to 6dB
o Phase Expansion Up to 21°
o 500MHz to 1100MHz Frequency Range
o Exceptional Gain and Phase Flatness
o Group Delay <2.4ns (Gain and Phase Sections
o ±0.03ns Group Delay Ripple Over a 100MHz Band
o Capable of Handling Input Drives Up to +23dBm
o On-Chip Temperature Variation Compensation
o Single +5V Supply
o Low Power Consumption: 75mW (typ)
o Fully Integrated into Small 28-Pin Thin QFN
*Performance dependent on amplifier, bias, and modulation.
*EP = Exposed paddle.
MAX2010ETI-T
Combined)
Package
GND*
GND*
GND*
GND*
OUTP
GND*
*INTERNALLY CONNECTED TO EXPOSED GROUND PADDLE.
ING
PART
1
2
3
4
5
6
7
28
8
27
9
RF Predistorter
MAX2010
Ordering Information
-40°C to +85°C
TEMP RANGE
26
10
Functional Diagram/
Pin Configuration
25
11
CONTROL
GAIN
24
12
CONTROL
PHASE
23
13
PIN-PACKAGE
28 Thin QFN-EP*
Features
22
14
21
20
19
18
17
16
15
V
GND*
PBRAW
PBEXP
PBIN
GND*
V
CCG
CCP
1

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max2010etit Summary of contents

Page 1

Rev 0; 8/03 General Description The MAX2010 adjustable RF predistorter is designed to improve power amplifier (PA) adjacent-channel power rejection (ACPR) by introducing gain and phase expan- sion chain to compensate for the PA’s gain and ...

Page 2

Adjustable RF Predistorter ABSOLUTE MAXIMUM RATINGS GND ..............................................-0.3V to +5.5V CCG CCP ING, OUTG, GCS, GFS, GBP to GND......-0. INP, OUTP, PFS_, PDCS_, PBRAW, PBEXP, PBIN to GND ............................-0. ...

Page 3

AC ELECTRICAL CHARACTERISTICS (MAX2010 EV kit +4.75V to +5.25V, 50Ω environment, P CCG CCP V = +5.0V +1.2V GFS GBP PBIN ues are 880MHz ...

Page 4

Adjustable RF Predistorter AC ELECTRICAL CHARACTERISTICS (continued) (MAX2010 EV kit +4.75V to +5.25V, 50Ω environment, P CCG CCP V = +5.0V +1.2V GFS GBP PBIN ues are at ...

Page 5

EV kit +5.0V -20dBm, V CCP IN unless otherwise noted.) SUPPLY CURRENT vs. SUPPLY VOLTAGE 6.6 6.5 6.4 6 +85° +25°C A 6.1 6.0 5 -40°C A ...

Page 6

Adjustable RF Predistorter (MAX2010 EV kit +5.0V -20dBm, V CCP IN unless otherwise noted.) SMALL-SIGNAL GAIN vs. FREQUENCY -4.0 -4.5 -5 4.75V, 5.0V, 5.25V CCP -5.5 -6.0 -6.5 -7.0 0.5 0.6 ...

Page 7

EV kit +5.0V -20dBm, V CCP IN unless otherwise noted.) GAIN EXPANSION vs. INPUT POWER -4 -4.7 -4.9 C -5.1 B -5.3 A -5.5 -5 INPUT ...

Page 8

Adjustable RF Predistorter (MAX2010 EV kit +5.0V -20dBm, V CCP IN unless otherwise noted.) GAIN EXPANSION vs. INPUT POWER -4 5. 1.5V PDCS1 PF_S1 -4.2 -4.4 -4 ...

Page 9

EV kit +5.0V -20dBm, V CCP IN unless otherwise noted.) LARGE-SIGNAL INPUT RETURN LOSS vs. FREQUENCY +15dBm 0.5 0.6 0.7 0.8 0.9 ...

Page 10

Adjustable RF Predistorter (MAX2010 EV kit +5.0V -20dBm, V CCP IN unless otherwise noted.) GROUP DELAY vs. FREQUENCY 1.5 1.4 1 1.2 1.1 A 1.0 0.9 B 0.8 0.5 0.6 0.7 ...

Page 11

EV kit +5.0V -20dBm, V CCP IN unless otherwise noted.) GAIN EXPANSION vs. INPUT POWER - -11 - -17 - INPUT POWER ...

Page 12

Adjustable RF Predistorter PIN NAME 10, 16, 20, GND Ground. Internally connected to the exposed paddle. 22, 26 Gain Input. Connect ING to a coupling capacitor ...

Page 13

Phase Expansion Circuitry Figure 1 shows a typical PA’s phase behavior with respect to input power. For input powers less than the breakpoint level, the phase remains relatively constant. As the input power becomes greater than the break- point level, ...

Page 14

Adjustable RF Predistorter PF_S1 Figure 2. Simplified Phase Slope Internal Circuitry PA GAIN COMPRESSION BREAKPOINT SLOPE P (dBm) IN Figure 3. PA Gain Compression Canceled by MAX2010 Gain Expansion 14 ______________________________________________________________________________________ PFS1 PHASE-CONTROL CIRCUITRY PFS2 2 PDCS1 ...

Page 15

Gain Expansion Breakpoint The gain expansion breakpoint is usually controlled by a DAC connected through the GBP pin. The GBP input voltage range of 0. corresponds to a break- point input power range of -2.5dBm to 23dBm. To ...

Page 16

Adjustable RF Predistorter V = 1.5V PF_S1 Figure 4. AM-PM Response Tuning Circuit Power-Supply Bypassing Bypass each V pin with a 0.01µF capacitor. CC Exposed Pad RF The exposed paddle (EP) of the MAX2010’s 28-pin thin QFN-EP ...

Page 17

PREAMPLIFIER 1.5V PF_S1 V = 0.8V PBIN PDCS1 PDCS2 Figure 5. MAX2010 Phase and Gain Optimization Circuit ______________________________________________________________________________________ 500MHz to 1100MHz Adjustable PREAMPLIFIER GAIN = 7dB 6 3 OUTP ING ...

Page 18

Adjustable RF Predistorter C6 POWER AMPLIFER OPTIONAL MATCH COMPENSATION C8 C10 L2 C12 PREAMPLIFER C1 C11 PREAMPLIFER *INTERNALLY CONNECTED TO EXPOSED GROUND PADDLE. Chip Information TRANSISTOR COUNT: Bipolar: 160 CMOS: 240 PROCESS: BiCMOS 18 ______________________________________________________________________________________ 28 27 ...

Page 19

For the latest package outline information go to www.maxim-ic.com/packages.) PIN # 1 I.D. C NOTES: 1. DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994. 2. ALL DIMENSIONS ...

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