MAX2057 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – 1700MHz to 2500MHz Variable-Gain Amplifier with Analog Gain Control

19-3510; Rev 0; 1/05
EVAALVUAAILTAIOBNLEKIT
1700MHz to 2500MHz Variable-Gain
Amplifier with Analog Gain Control
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
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.
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
PKG
CODE
MAX2057ETX
-40°C to +85°C
36 Thin QFN-EP**
6mm x 6mm
T3666-2
MAX2057ETX-T
-40°C to +85°C
36 Thin QFN-EP**
6mm x 6mm
T3666-2
MAX2057ETX+D
-40°C to +85°C
36 Thin QFN-EP**
6mm x 6mm
T3666-2
MAX2057ETX+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.
cdmaOne is a trademark of CDMA Development Group.
cdma2000 is a registered trademark of Telecommunications
Industry Association.
Pin Configuration/Functional Diagram appear at end of data
sheet.
________________________________________________________________ Maxim Integrated Products 1
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.