Rainbow-electronics MAX2057 User Manual download pdf

General Description

The MAX2057 general-purpose, high-performance vari-

able-gain amplifier (VGA) is designed to operate in the

1700MHz to 2500MHz frequency range*. This device

features 15.5dB of gain, 6dB of noise figure, and an out-

put 1dB compression point of 23.8dBm. The MAX2057

also provides an exceptionally high OIP3 level of

37dBm, which is maintained over the entire attenuation

range. In addition, the on-chip analog attenuators yield

infinite control and high attenuation accuracy over

selectable 21dB or 42dB control ranges. Each of these

features makes the MAX2057 an ideal VGA for

DCS/PCS, cdma2000™, W-CDMA, and PHS/PAS trans-

mitter and power amplifier AGC circuits.

The MAX2057 is pin compatible with the MAX2056

800MHz to 1000MHz VGA, making this family of ampli-

fiers ideal for applications where a common PC board

layout is used for both frequency bands.

The MAX2057 operates from a single +5V supply and is

available in a compact 36-pin thin QFN package (6mm

x 6mm x 0.8mm) with an exposed paddle. Electrical

performance is guaranteed over the extended -40°C to

+85°C temperature range.

Applications

DCS 1800/PCS 1900 2G and 2.5G EDGE Base-

Station Transmitters and Power Amplifiers

cdmaOne™, cdma2000, Base-Station

Transmitters and Power Amplifiers

UMTS/W-CDMA and Other 3G Base-Station

Transmitters and Power Amplifiers

PHS/PAS 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

cdmaOne is a trademark of CDMA Development Group.

cdma2000 is a registered trademark of Telecommunications

Industry Association.

Features

♦ 1700MHz to 2500MHz RF Frequency Range*

♦ 37dBm Constant OIP3 (Over All Gain Settings)

♦ 23.8dBm Output 1dB Compression Point

♦ 15.5dB Typical Gain at Maximum Gain Setting

♦ 0.5dB Gain Flatness Over 100MHz Bandwidth

♦ 6dB Noise Figure at Maximum Gain Setting (Using

1 Attenuator)

♦ Two Gain-Control Ranges: 21dB and 42dB

♦ Analog Gain Control

♦ Single +5V Supply Voltage

♦ Pin Compatible with MAX2056, 800MHz to

1000MHz RF VGA

♦ External Current-Setting Resistors Provide Option

for Operating VGA in Reduced-Power/Reduced-

Performance Mode

♦ Lead-Free Package Available

*Note: Operation beyond this range is possible, but has not been

characterized.

MAX2057

1700MHz to 2500MHz Variable-Gain

Amplifier with Analog Gain Control

________________________________________________________________ Maxim Integrated Products 1

Ordering Information

19-3510; Rev 0; 1/05

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

PART

TEMP RANGE

PIN-PACKAGE

PKG

CODE

M AX 2057E TX

-40°C to +85°C

36 Thin QFN-EP**

6mm x 6mm

T3666-2

M AX 2057E TX - T

-40°C to +85°C

36 Thin QFN-EP**

6mm x 6mm

T3666-2

M AX 2057E TX + D

-40°C to +85°C

36 Thin QFN-EP**

6mm x 6mm

T3666-2

M AX 2057E TX + TD

-40°C to +85°C

36 Thin QFN-EP**

6mm x 6mm

T3666-2

**EP = Exposed paddle.

+ = Lead (Pb) free.

D = Dry pack.

-T = Tape-and-reel package.

Pin Configuration/Functional Diagram appear at end of data

sheet.

1 2 3 4 5 6 ... 11 12

Summary of Contents

Page 1 - Ordering Information

General DescriptionThe MAX2057 general-purpose, high-performance vari-able-gain amplifier (VGA) is designed to operate in the1700MHz to 2500MHz freque

Page 2 - AC ELECTRICAL CHARACTERISTICS

MAX20571700MHz to 2500MHz Variable-GainAmplifier with Analog Gain Control10 __________________________________________________________________________

Page 3