MAXIM MAX2009 Technical data

General Description

The MAX2009 adjustable RF predistorter is designed to
improve power amplifier (PA) adjacent-channel power
rejection (ACPR) by introducing gain and phase expan­sion 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 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’s counterpart, the MAX2010.

The MAX2009 is unique in that it provides up to 7dB of
gain expansion and 24° 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-and­forget 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 MAX2009 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.

Applications

WCDMA/UMTS, cdma2000, DCS1800, and
PCS1900 Base Stations

Feed-Forward PA Architectures

Digital Baseband Predistortion Architectures

Military Applications

WLAN Applications

Features

♦ Up to 12dB ACPR Improvement*
♦ Independent Gain and Phase Expansion Controls
♦ Gain Expansion Up to 7dB
♦ Phase Expansion Up to 24°
♦ 1200MHz to 2500MHz Frequency Range
♦ Exceptional Gain and Phase Flatness
♦ Group Delay <1.3ns (Gain and Phase Sections

Combined)

♦ ±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

*Performance dependent on amplifier, bias, and modulation.

MAX2009

1200MHz to 2500MHz Adjustable

RF Predistorter

________________________________________________________________ Maxim Integrated Products 1

28 27 26 25 24 23 22

7

6

5

4

3

2

1

15

16

17

18

19

20

21

8 9 10 11 12 13 14

MAX2009

GAIN

CONTROL

PHASE

CONTROL

GND*

GND*

ING

GND*

GND*

OUTP

GND*

V

CCG

GND*

PBRAW

PBEXP

PBIN

GND*

V

CCP

GND*

INP

GND*

PFS1

PFS2

PDCS1

PDCS2

GND*

OUTG

GND*

GCS

GFS

GBP

GND*

*INTERNALLY CONNECTED TO EXPOSED GROUND PADDLE.

Functional Diagram/

Pin Configuration

Ordering Information

19-2929; Rev 0; 8/03

*EP = Exposed paddle.

EVALUATION KIT

AVAILABLE

PART TEMP RANGE PIN-PACKAGE

MAX2009ETI-T -40°C to +85°C

28 Thin QFN-EP*

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.

MAX2009

1200MHz to 2500MHz Adjustable
RF Predistorter

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(MAX2009 EV kit; V

CCG

= V

CCP

= +4.75V to +5.25V; no RF signal applied; INP, ING, OUTP, OUTG are AC-coupled and terminated to

50Ω; V

PF_S1

= open; PBEXP shorted to PBRAW; V

PDCS1

= V

PDCS2

= 0.8V; V

PBIN

= V

GBP

= V

GCS

= GND; V

GFS

= V

CCG

; TA= -40°C to

+85°C. Typical values are at V

CCG

= V

CCP

= +5.0V, TA= +25°C, unless otherwise noted.)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

V

CCG

, V

CCP

to GND ..............................................-0.3V to +5.5V

ING, OUTG, GCS, GFS, GBP to GND......-0.3V to (V

CCG

+ 0.3V)

INP, OUTP, PFS_, PDCS_, PBRAW,

PBEXP, PBIN to GND ............................-0.3V to (V

CCP

+ 0.3V)

Input (ING, INP, OUTP, OUTG) Level ............................+23dBm

PBEXP Output Current ........................................................±1mA

Continuous Power Dissipation (T

A

= +70°C)
28-Pin Thin QFN-EP

(derate 21mW/°C above +70°C)...............................1667mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering 10s) ..................................+300°C

PARAMETER CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage V

CCG

, V

CCP

V

V

CCP

5.8 7

Supply Current

V

CCG

10

mA

PBIN, PBRAW 0

Analog Input Voltage Range

GBP, GFS, GCS 0

V

V

GFS

= V

GCS

= V

PBRAW

= 0V -2 +2

V

GBP

= 0 to +5V

Analog Input Current

V

PBIN

= 0 to +5V

µA

Logic-Input High Voltage PDCS1, PDCS2 (Note 1) 2.0 V

Logic-Input Low Voltage PDCS1, PDCS2 (Note 1) 0.8 V

Logic Input Current -2 +2 µA

4.75 5.25

-100 +170

-100 +220

12.1

V

CCP

V

CCG

MAX2009

1200MHz to 2500MHz Adjustable

RF Predistorter

_______________________________________________________________________________________ 3

AC ELECTRICAL CHARACTERISTICS

(MAX2009 EV kit, V

CCG

= V

CCP

= +4.75V to +5.25V, 50Ω environment, PIN= -20dBm, fIN= 1200MHz to 2500MHz, V

GCS

= +1.0V,

V

GFS

= +5.0V, V

GBP

= +1.2V, V

PBIN

= V

PDCS1

= V

PDCS2

= 0V, V

PF_S1

= +5V, V

PBRAW

= V

PBEXP

, TA= -40°C to +85°C. Typical values

are at f

IN

= 2140MHz, V

CCG

= V

CCP

= +5V, TA= +25°C, unless otherwise noted.) (Notes 1, 2)

PARAMETER CONDITIONS

UNITS

Operating Frequency Range

MHz

VSWR ING, INP, OUTG, OUTP

PHASE CONTROL SECTION

Nominal Gain

dB

Gain Variation Over Temperature

TA = -40°C to +85°C

dB

Gain Flatness Over a 100MHz band

dB

Phase-Expansion Breakpoint
Maximum

V

PBIN

= +5V 23

dBm

Phase-Expansion Breakpoint
Minimum

V

PBIN

= 0V 3.7

dBm

Phase-Expansion Breakpoint
Variation Over Temperature

T

A

= -40°C to +85°C

dB

V

PF_S1

= +5V, V

PDCS1

= V

PDCS2

= 0V,

P

IN

= -20 dBm to +23 dBm

V

PDCS1

= 5V, V

PDCS2

= 0V, V

PF_S1

= +1.5V

V

PDCS1

= 0V, V

PDCS2

= 5V, V

PF_S1

= +1.5V 9.2

Phase Expansion

V

PF_S1

= 0V, V

PDCS1

= V

PDCS2

= +5V,

P

IN

= -20dBm to +23dBm

7.6

Degrees

Phase-Expansion Slope
Maximum

P

IN

= +15dBm 1.2

Degrees

/dB

Phase-Expansion Slope Minimum

V

PF_S1

= 0V, V

PDCS1

= V

PDCS2

= +5V,

P

IN

= +15dBm

0.4

Degrees

/dB

Phase Slope Variation Over
Temperature

P

IN

= +15dBm, TA = -40°C to +85°C

Degrees

/dB

Phase Ripple Over a 100MHz band, deviation from linear phase

Degrees

Noise Figure 7.5 dB

Absolute Group Delay Interconnects de-embedded 0.7 ns

Group Delay Ripple Over a 100MHz band

ns

Parasitic Gain Expansion PIN = -20dBm to +23dBm 0.9 dB

MIN TYP MAX

1200 2500

1.3:1

-7.5

-1.4

±0.1

±1.3

23.7

14.2

-0.1

±0.15

±0.03

MAX2009

1200MHz to 2500MHz Adjustable
RF Predistorter

4 _______________________________________________________________________________________

Note 1: Guaranteed by design and characterization.
Note 2: All limits reflect losses and characteristics of external components shown in the Typical Application Circuit, unless otherwise

noted.

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX2009 EV kit, V

CCG

= V

CCP

= +4.75V to +5.25V, 50Ω environment, PIN= -20dBm, fIN= 1200MHz to 2500MHz, V

GCS

= +1.0V,

V

GFS

= +5.0V, V

GBP

= +1.2V, V

PBIN

= V

PDCS1

= V

PDCS2

= 0V, V

PF_S1

= +5V, V

PBRAW

= V

PBEXP

, TA= -40°C to +85°C. Typical values

are at f

IN

= 2140MHz, V

CCG

= V

CCP

= +5V, TA= +25°C, unless otherwise noted.) (Notes 1, 2)

PARAMETER CONDITIONS

GAIN CONTROL SECTION

-16

V

GCS

= 0V, V

GFS

= +5V -23

Nominal Gain

V

GCS

= +5V, V

GFS

= 0V

dB

Gain Variation Over Temperature

TA = -40°C to +85°C-1dB

Gain Flatness Over a 100MHz band

dB

Gain-Expansion Breakpoint
Maximum

V

GBP

= +5V 23

Gain-Expansion Breakpoint
Minimum

V

GBP

= +0.5V -3

Gain-Expansion Breakpoint
Variation Over Temperature

T

A

= -40°C to +85°C

dB

V

GFS

= +5V, PIN = -20dBm to +23dBm 6.6

Gain Expansion

V

GFS

= 0V, PIN = -20dBm to +23dBm 3.6

dB

V

GFS

= +5V, PIN = +15dBm 0.5

Gain-Expansion Slope

V

GFS

= +0V, PIN = +15dBm

Gain Slope Variation Over
Temperature

P

IN

= +15dBm, TA = -40°C to +85°C

Noise Figure 16 dB

Absolute Group Delay Interconnects de-embedded

ns

Group Delay Ripple Over a 100MHz band

ns

Phase Ripple Over a 100MHz band, deviation from linear phase

Parasitic Phase Expansion PIN = -20dBm to +23dBm 5

MIN TYP MAX UNITS

-8.5

±0.3

-0.3

0.26

-0.04 dB/dB

0.61

±0.01

±0.07 Degrees

dBm

dBm

dB/dB

Degrees

MAX2009

1200MHz to 2500MHz Adjustable

RF Predistorter

_______________________________________________________________________________________ 5

5.3

5.6

5.5

5.4

5.7

5.8

5.9

6.0

6.1

6.2

6.3

4.75 4.954.85 5.05 5.15 5.25

SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX2009TOC01

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

TA = +85°C

TA = +25°C

TA = -40°C

SMALL-SIGNAL INPUT RETURN LOSS

vs. FREQUENCY

MAX2009TOC02

40

35

25

30

10

5

15

20

0

INPUT RETURN LOSS (dB)

1.1 1.5 1.71.3

1.9

2.1 2.3 2.5

FREQUENCY (GHz)

A = V

PDCS1

= V

PDCS2

= V

PF_S1

= 0V

B = V

PDCS1

= V

PDCS2

= 0V, V

PF_S1

= 5V

C = V

PDCS1

= V

PDCS2

= 5V, V

PF_S1

= 0V

D = V

PDCS1

= V

PDCS2

= V

PF_S1

= 5V

B

D

C

A

SMALL-SIGNAL OUTPUT RETURN LOSS

vs. FREQUENCY

MAX2009TOC03

40

35

25

30

10

5

15

20

0

OUTPUT RETURN LOSS (dB)

1.1 1.5 1.71.3

1.9

2.1 2.3 2.5

FREQUENCY (GHz)

A = V

PDCS1

= V

PDCS2

= V

PF_S1

= 0V

B = V

PDCS1

= V

PDCS2

= 0V, V

PF_S1

= 5V

C = V

PDCS1

= V

PDCS2

= 5V, V

PF_S1

= 0V

D = V

PDCS1

= V

PDCS2

= V

PF_S1

= 5V

B

C

A

D

LARGE-SIGNAL INPUT RETURN LOSS

vs. FREQUENCY

MAX2009TOC04

40

35

25

30

10

5

15

20

0

INPUT RETURN LOSS (dB)

1.1 1.5 1.71.3

1.9

2.1 2.3 2.5

FREQUENCY (GHz)

A = V

PDCS1

= V

PDCS2

= V

PF_S1

= 0V

B = V

PDCS1

= V

PDCS2

= 0V, V

PF_S1

= 5V

C = V

PDCS1

= V

PDCS2

= 5V, V

PF_S1

= 0V

D = V

PDCS1

= V

PDCS2

= V

PF_S1

= 5V

C

D

B

A

PIN = +15dBm

LARGE-SIGNAL OUTPUT RETURN LOSS

vs. FREQUENCY

MAX2009TOC05

40

35

25

30

10

5

15

20

0

OUTPUT RETURN LOSS (dB)

1.1 1.5 1.71.3

1.9

2.1 2.3 2.5

FREQUENCY (GHz)

A = V

PDCS1

= V

PDCS2

= V

PF_S1

= 0V

B = V

PDCS1

= V

PDCS2

= 0V, V

PF_S1

= 5V

C = V

PDCS1

= V

PDCS2

= 5V, V

PF_S1

= 0V

D = V

PDCS1

= V

PDCS2

= V

PF_S1

= 5V

C

D

B

A

PIN = +15dBm

-10.0

-8.5

-9.0

-9.5

-7.5

-8.0

-5.5

-6.0

-6.5

-7.0

-5.0

1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5

SMALL-SIGNAL GAIN

vs. FREQUENCY

MAX2009TOC06

FREQUENCY (GHz)

GAIN (dB)

TA = +85°C

TA = +25°C

TA = -40°C

Typical Operating Characteristics

Phase Control Section

(MAX2009 EV kit, V

CCP

= +5.0V, PIN= -20dBm, V

PBIN

= 0V, V

PF_S1

= +5.0V, V

PDCS1

= V

PDCS2

= 0V, fIN= 2140MHz, TA= +25°C,

unless otherwise noted.)

MAX2009

1200MHz to 2500MHz Adjustable
RF Predistorter

6 _______________________________________________________________________________________

-10.0

-8.5

-9.0

-9.5

-7.5

-8.0

-5.5

-6.0

-6.5

-7.0

-5.0

1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5

SMALL-SIGNAL GAIN

vs. FREQUENCY

MAX2009TOC07

FREQUENCY (GHz)

GAIN (dB)

V

CCP

= 4.75V, 5.0V, 5.25V

-8.0

-7.5

-6.5

-7.0

-6.0

-5.5

SMALL-SIGNAL GAIN

vs. COARSE SLOPE

MAX2009TOC08

COARSE SLOPE (V)

GAIN (dB)

PDCS1 = 0,
PDCS2 = 5

PDCS1 = 5,
PDCS2 = 5

PDCS1 = 5,
PDCS2 = 0

PDCS1 = 0,
PDCS2 = 0

V

PF_S1

= 1.5V

V

PF_S1

= 0V

V

PF_S1

= 5V

-8.0

-7.5

-6.5

-7.0

-6.0

-5.5

SMALL-SIGNAL GAIN

vs. COARSE SLOPE

MAX2009TOC09

COARSE SLOPE (V)

GAIN (dB)

TA = -40°C

TA = +25°C

TA = +85°C

PDCS1 = 0,
PDCS2 = 5

PDCS1 = 5,
PDCS2 = 5

PDCS1 = 5,
PDCS2 = 0

PDCS1 = 0,
PDCS2 = 0

GROUP DELAY

vs. FREQUENCY

MAX2009TOC10

0.50

0.60

0.55

0.75

0.80

0.70

0.65

0.85

DELAY (ns)

1.1 1.5 1.71.3

1.9

2.1 2.3 2.5

FREQUENCY (GHz)

A = V

PDCS1

= V

PDCS2

= V

PF_S1

= 0V

B = V

PDCS1

= V

PDCS2

= 0V, V

PF_S1

= 5V

C = V

PDCS1

= V

PDCS2

= 5V, V

PF_S1

= 0V

D = V

PDCS1

= V

PDCS2

= V

PF_S1

= 5V

D

C

A

B

INTERCONNECTS DE-EMBEDDED

NOISE FIGURE vs. FREQUENCY

MAX2009TOC11

5.0

6.5

5.5

6.0

8.0

8.5

9.0

7.5

7.0

9.5

NOISE FIGURE (dB)

1.5 1.7 1.9

2.1

2.3 2.5

FREQUENCY (GHz)

A = V

PDCS1

= V

PDCS2

= V

PF_S1

= 0V

B = V

PDCS1

= V

PDCS2

= 0V, V

PF_S1

= 5V

C = V

PDCS1

= V

PDCS2

= 5V, V

PF_S1

= 0V

D = V

PDCS1

= V

PDCS2

= V

PF_S1

= 5V

D

C

A

B

5.70

5.80

5.75

5.90

5.85

5.95

6.00

SUPPLY CURRENT vs. INPUT POWER

MAX2009TOC12

INPUT POWER (dBm)

SUPPLY CURRENT (mA)

08124162024

A = V

PBIN

= 0V

B = V

PBIN

= 0.5V

C = V

PBIN

= 1.0V

D

E

C

A

B

D = V

PBIN

= 1.5V

E = V

PBIN

= 3.0V

Typical Operating Characteristics (continued)

Phase Control Section (continued)

(MAX2009 EV kit, V

CCP

= +5.0V, PIN= -20dBm, V

PBIN

= 0V, V

PF_S1

= +5.0V, V

PDCS1

= V

PDCS2

= 0V, fIN= 2140MHz, TA= +25°C,

unless otherwise noted.)