MAXIM MAX2059 User Manual

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General Description

The MAX2059 high-linearity digital-variable-gain amplifier (DVGA) is designed to provide 56dB of total gain range and typical output IP3 and output P1dB levels of +31.8dBm and +18.4dBm, respectively. The device is ideal for a variety of applications, including single and multicarrier 1700MHz to 2200MHz DCS 1800/PCS 1900 EDGE, cdma2000®, WCDMA/UMTS, and TD-SCDMA base stations. The MAX2059 yields a high level of component integration, which includes two 5-bit digital attenuators, a two-stage driver amplifier, a loopback mixer, and a serial interface to control the attenuators.

The MAX2059 is pin compatible with the MAX2058 700MHz to 1200MHz DVGA, facilitating an easy design-in for applications where a common PC board layout is used for both frequency bands.

The MAX2059 is available in a 40-pin thin QFN package with an exposed paddle. Electrical performance is guaranteed over a -40°C to +85°C temperature range.

Applications

DCS 1800/PCS 1900 EDGE Base-Station Transmitters and Power Amplifiers

cdmaOne™ and cdma2000 Base-Station Transmitters and Power Amplifiers

WCDMA, TD-SCDMA, and Other 3G Base-Station Transmitters and Power Amplifiers

Transmitter Gain Control

Receiver Gain Control

Broadband Systems

Automatic Test Equipment

Digital and Spread-Spectrum Communication Systems

Microwave Terrestrial Links

Features

♦ +31.8dBm Typical Output IP3

♦ +18.4dBm Typical Output 1dB Compression Point

♦ 1700MHz to 2200MHz RF Frequency Range

♦ 700MHz to 1200MHz RF Frequency Range

(MAX2058)

♦ 10.9dB Typical Small-Signal Gain

♦ Includes Two Independent 5-Bit Digital Attenuator

Stages, Yielding 56dB of Total Gain-Control Range with 1dB Steps

♦ 3-Wire SPI™/MICROWIRE™ Compatible

♦ Integrated Loopback Mixer for Tx/Rx Self-

Diagnostics

♦ +5V Single-Supply Operation

♦ External Current-Setting Resistors for Scalable

Device Power

♦ Lead-Free Package Available

MAX2059

1700MHz to 2200MHz High-Linearity,

SPI-Controlled DVGA with Integrated Loopback Mixer

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-0566; Rev 0; 7/06

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.

EVALUATION KIT

AVAILABLE

*EP = Exposed paddle.

+Denotes lead-free package. T = Tape-and-reel.

Pin Configuration/Functional Diagram appears at end of data sheet.

cdma2000 is a registered trademark of Telecommunications Industry Association. cdmaOne is a trademark of CDMA Development Group. SPI is a trademark of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.

PART

PKG

CODE

MAX2059ETL

T4066-3

MAX2059ETL-T

( 6m m x 6m m )

T4066-3

MAX2059ETL+

( 6m m x 6m m )

T4066-3

MAX2059ETL+T

( 6m m x 6m m )

T4066-3

TEMP RANGE PIN-PACKAGE

-40°C to +85°C

40 Thi n Q FN - E P *

(6mm x 6mm)

40 Thi n Q FN - E P *

MAX2059

1700MHz to 2200MHz High-Linearity, SPI-Controlled DVGA with Integrated Loopback Mixer

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

DC ELECTRICAL CHARACTERISTICS

(MAX2059 Typical Application Circuit, VCC= +4.75V to +5.25V, R1 = 1.2kΩ, R2 = 2kΩ, R3 = 2kΩ, TC= -40°C to +85°C. Typical values are at V

= +5.0V and TC= +25°C, unless otherwise noted.) (Note 1)

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.

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

RSET1, RSET2......................................................+1.2V to +4.0V

LBBIAS .......................................................(V

- 1.5V) to +5.5V

LB_EN, DATA,

CS, CLK .............................-0.3V to (VCC+ 0.3V)

ATTEN_INA, ATTEN_INB, ATTEN_OUTA, ATTEN_OUTB

Input Power .................................................................+24dBm

AMPIN, Differential LO Input Power ...............................+12dBm

Continuous Power Dissipation (T

= +70°C)

40-Pin TQFN (derated 26.3mW/°C above +70°C) ......2100mW

Operating Temperature Range (Note A) .............-40°C to +85°C

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

....................................................................................10°C/W

....................................................................................38°C/W

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

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage V

Reference to VCC, VCCLB, VCCLOGIC, VCCBIAS1, VCCBIAS2, VCCAMP

5.0

LB mixer disabled (LB_EN = 1)

241

Total Supply Current I

LB mixer enabled (LB_EN = 0)

275

LOGIC INPUTS (DATA, CS, CLK, LB_EN)

Input High Voltage V

2.4 V

Input Low Voltage V

0.8 V

Input Current with Logic-High I

µA

Input Current with Logic-Low I

µA

AC ELECTRICAL CHARACTERISTICS

(MAX2059 Typical Application Circuit, VCC= +4.75V to +5.25V, digital attenuators set for maximum gain, 1700MHz ≤ fRF≤ 2200MHz, 40MHz ≤ f

≤ 100MHz, TC= -40°C to +85°C. Typical values are at VCC= 5.0V, PIN= 0dBm, fRF= 1850MHz, PLO= -6dBm, fLO=

95MHz, f

LBOUT

= fRF- fLO, and TC= +25°C, unless otherwise noted.) (Note 1)

PARAMETER

CONDITIONS

UNITS

MAX2058

RF Frequency (Note 2)

MAX2059

MHz

Small-Signal Gain A

fRF = 1850MHz, TC = +25°C 8.0

TC = -40°C to +25°C

Gain Variation vs. Temperature

All attenuation settings

= +25°C to +85°C

dB/°C

Output Power P

OUT

PIN = 0dBm, fRF = 1850MHz, TC = +25°C 8.0

dBm

1800MHz to 2000MHz

Output Power Flatness PIN = 0dBm

2000MHz to 2200MHz -2

Attenuation Range 56 dB

Output 3rd-Order Intercept Point

OIP3

Two tones: f

RF1

= 1850MHz, f

RF2

1851MHz, P

OUT1

= P

OUT2

= +5dBm

dBm

Note A: TCis the temperature on the exposed paddle of the package.

4.75

189

217

0.01

SYMBOL

MIN TYP MAX

700 1200

1700 2200

10.9 13.3

-0.024

-0.032

10.9 13.3

-0.77

31.8

5.25

MAX2059

1700MHz to 2200MHz High-Linearity,

SPI-Controlled DVGA with Integrated Loopback Mixer

_______________________________________________________________________________________ 3

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX2059 Typical Application Circuit, VCC= +4.75V to +5.25V, digital attenuators set for maximum gain, 1700MHz ≤ fRF≤ 2200MHz, 40MHz ≤ f

≤ 100MHz, TC= -40°C to +85°C. Typical values are at VCC= 5.0V, PIN= 0dBm, fRF= 1850MHz, PLO= -6dBm, fLO=

95MHz, f

LBOUT

= fRF- fLO, and TC= +25°C, unless otherwise noted.) (Note 1)

PARAMETER

CONDITIONS

UNITS

Output -1dB Compression Point OP

1dB

(Note 3)

dBm

RMS Error Vector Magnitude EVM P

OUT

= +12dBm, EDGE modulation 0.5 %

200kHz offset

400kHz offset

600kHz offset

Spurious Emissions in 30kHz Bandwidth

OUT

= +12dBm, EDGE modulation (Note 4)

1.2MHz offset

dBc

Noise Figure NF 8.1 dB

Input Return Loss 50Ω source, minimum attenuation setting 19 dB

Output Return Loss 50Ω load, minimum attenuation setting 24 dB

5-BIT DIGITAL ATTENUATORS

Insertion Loss

Attenuator measured separately Z

= ZL =

50Ω

5dB

Input 3rd-Order Intercept Point IIP3

Attenuator measured separately Z

= ZL =

50Ω, two tones: f

RF1

= 1850MHz, f

RF2

1851MHz, P

IN1

= P

IN2

= +5dBm

dBm

Control Range (Note 5) 28 dB

1800MHz to 2000MHz

Attenuation Step Size Variation vs. Frequency

2000MHz to 2200MHz

1800MHz to 2200MHz, T

= -40°C to +25°C

Attenuation Variation vs. Temperature

1800MHz to 2200MHz, T

= +25°C to +85°C

dB/°C

Step Size 1dB

Relative Step Accuracy

1800MHz to 2000MHz, all states represented. For steps 0–23dB, accuracy is significantly improved. See Typical Operating Characterisitcs.

Absolute Step Accuracy

1800MHz to 2000MHz, all states represented. For steps 0–23dB, accuracy is significantly improved. See Typical Operating Characterisitcs.

-3.5 dB

Spurious Emissions in 300kHz Bandwidth

No RF input, attenuator A stepped from 0 to 2dB, 7dB to 9dB, 15dB to 17dB, 0 to 31dB, 31dB to 0dB, with attenuator B at 0dB; attenuator B stepped from 0 to 2dB, 7dB to 9dB, 15dB to 17dB, 0 to 31dB, 31dB to 0dB, with attenuator A at 0dB (Note 6)

-89

dBm

SYMBOL

MIN TYP MAX

18.4

-39.1

-72.5

-83.1

-85.7

±0.17

±0.29

±0.011

±0.023

+0.53

-0.97

+0.3

MAX2059

1700MHz to 2200MHz High-Linearity, SPI-Controlled DVGA with Integrated Loopback Mixer

4 _______________________________________________________________________________________

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX2059 Typical Application Circuit, VCC= +4.75V to +5.25V, digital attenuators set for maximum gain, 1700MHz ≤ fRF≤ 2200MHz, 40MHz ≤ f

≤ 100MHz, TC= -40°C to +85°C. Typical values are at VCC= 5.0V, PIN= 0dBm, fRF= 1850MHz, PLO= -6dBm, fLO=

95MHz, f

LBOUT

= fRF- fLO, and TC= +25°C, unless otherwise noted.) (Note 1)

PARAMETER

CONDITIONS

UNITS

Switching Speed

From chip select transitioning high to the output settling to within 1dB of steady state output

0.3 µs

LOOPBACK MIXER

LO Frequency f

(Note 2) 40 100

MHz

LO Input Power P

-6 0

dBm

Output Power

= +5dBm, fRF = 1850MHz, TC = +25°C

(Note 7)

dBm

1800MHz to 2000MHz

Gain Accuracy

= +5dBm, T

2000MHz to 2200MHz

Output 3rd-Order Intercept Point

OIP3

Tw o tones: f

RF1

= 1850M H z, f

RF2

= 1850.2M Hz,

IN 1

= P

IN 2

= + 2d Bm , TC = + 25°C

6.2

dBm

Output Noise Floor PIN = +5dBm

dBc/Hz

LB_EN enable time

ON/OFF Switching Time

LB_EN disable time

µs

LBOUT to ATTEN_OUTB Isolation

Mixer enabled, attenuators A and B both set to 31dB, P

= +5dBm

55 dB

ATTEN_OUTB to LBOUT Isolation

Mixer disabled, PIN = 0dBm 50 dB

Mixer enabled, 50Ω load 20

Output Return Loss

Mixer disabled, 50Ω load 13

LO Port Return Loss 50Ω source 28 dB

SERIAL PERIPHERAL INTERFACE (SPI)

Maximum Clock Speed 38

MHz

Data to Clock Setup Time t

1ns

Data to Clock Hold Time t

9ns

Clock to CS Setup Time t

4ns

CS Positive Pulse Width t

18 ns

CS Negative Pulse Width t

EWN

24 ns

Clock Pulse Width t

13 ns

Note 1: All limits include external component losses. Output measurements taken at RFOUT or LBOUT ports of the Typical

Application Circuit.

Note 2: Operating outside this range is possible, but with degraded performance of some parameters. Note 3: Compression point characterized. It is advisable not to continuously operate the VGA RF input above +15dBm. Note 4: Input RF source contribution to spurious emissions (Agilent ESG 4435B, PSA E4443A): 200kHz = -39.2dBc,

400kHz = -73.5dBc, 600kHz = -83.2dBc, 1.2MHz = -85.7dBc

Note 5: See the Applications Information section regarding effective attenuation range. Note 6: No SPI clock input applied. Note 7: Guaranteed by design and characterization.

SYMBOL

MIN TYP MAX

-15.4 -12.6 -9.6

±2.2

= -40°C to +85°C

±2.2

-137

0.12

MAX2059

1700MHz to 2200MHz High-Linearity,

SPI-Controlled DVGA with Integrated Loopback Mixer

_______________________________________________________________________________________ 5

Typical Operating Characteristics

(MAX2059 Typical Application Circuit, VCC= +4.75V to +5.25V, digital attenuators set for maximum gain, 1700MHz ≤ fRF≤ 2200MHz, 40MHz ≤ fLO≤ 100MHz, TC= -40°C to +85°C. Typical values are at VCC= 5.0V, PIN= 0dBm, fRF= 1850MHz, fLO= 95MHz, f

LBOUT

fRF- fLO, and TC= +25°C, unless otherwise noted.)

*Off-chip tuning can improve performance for applications beyond 2200MHz. Contact factory for details.

GAIN vs. RF FREQUENCY*

(MAXIMUM GAIN)

RF FREQUENCY (MHz)

GAIN (dB)

MAX12059 toc01

1500 1600 1700 1800 1900 2000 2100 2200 2300

TC = +25°C

TC = +5°C

TC = +85°C

TC = -40°C

GAIN vs. RF FREQUENCY*

(MAXIMUM GAIN)

RF FREQUENCY (MHz)

GAIN (dB)

MAX2059 toc02

1500 1600 1700 1800 1900 2000 2100 2200 2300

VCC = 4.75V

VCC = 5.0V

VCC = 5.25V

GAIN vs. RF FREQUENCY*

ADJUSTING ATTEN A

RF FREQUENCY (MHz)

GAIN (dB)

MAX2059 toc03

1500 1600 1700 1800 1900 2000 2100 2200 2300

-25

-15

-5

ATTEN A ABS ACCURACY vs. RF FREQUENCY

RF FREQUENCY (MHz)

ERROR (dB)

MAX2059 toc04

1500 1600 1700 1800 1900 2000 2100 2200 2300

-6

-5

-4

-3

-2

-1

STATES 24–31dB ATTEN

ATTEN A REL ACCURACY vs. RF FREQUENCY

RF FREQUENCY (MHz)

ERROR (dB)

MAX2059 toc05

1500 1600 1700 1800 1900 2000 2100 2200 2300

-2.0

-1.5

-1.0

-0.5

0.5

1.0

24dB ATTEN

16dB ATTEN

GAIN vs. RF FREQUENCY*

ADJUSTING ATTEN B

RF FREQUENCY (MHz)

GAIN (dB)

MAX2059 toc06

1500 1600 1700 1800 1900 2000 2100 2200 2300

-25

-15

-5

ATTEN B ABS ACCURACY vs. RF FREQUENCY

RF FREQUENCY (MHz)

ERROR (dB)

MAX2059 toc07

1500 1600 1700 1800 1900 2000 2100 2200 2300

-6

-5

-4

-3

-2

-1

STATES 24–31dB ATTEN

ATTEN B REL ACCURACY vs. RF FREQUENCY

RF FREQUENCY (MHz)

ERROR (dB)

MAX2059 toc08

1500 1600 1700 1800 1900 2000 2100 2200 2300

-2.0

-1.5

-1.0

-0.5

0.5

1.0

24dB ATTEN

OUTPUT IP3 vs. RF FREQUENCY*

RF FREQUENCY (MHz)

OUTPUT IP3 (dBm)

MAX2059 toc09

1700 1800 1900 2000 2100 2200 2300

TC = +85°C

TC = +5°C

TC = +25°C

TC = -40°C

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