_______________________________________________________________ Maxim Integrated Products 1

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.

250MHz to 4000MHz Dual,

Analog Voltage Variable Attenuator

19-5165; Rev 0; 3/10

General Description

The MAX19790 dual, general-purpose analog voltage

variable attenuator (VVA) is designed to interface with

50I systems operating in the 250MHz to 4000MHz fre-

quency range. Each attenuator includes a patented con-

trol circuit that provides 22dB of attenuation range with a

linear control slope of 10dB/V.

Both attenuators share a common analog control and

can be cascaded together to yield 44dB of total dynamic

range, with a combined linear control slope of 20dB/V.

The IC is a monolithic device designed on one of Maxim’s

proprietary SiGe BiCMOS processes. The device oper-

ates from a single +5.0V supply and is available in a com-

pact, 36-pin thin QFN package (6mm x 6mm x 0.8mm)

with an exposed pad. Electrical performance is guaran-

teed over the extended -40° to +85°C temperature range.

Applications

Broadband System Applications, Including

Wireless Infrastructure Digital and Spread-

Spectrum Communication Systems

WCDMA/LTE, TD-SCDMA/TD-LTE, WiMAX™,

Stations

VSAT/Satellite Modems

Microwave Terrestrial Links

Lineup Gain Trim

Temperature Compensation Circuits

Automatic Level Control (ALC)

Transmitter Gain Control

Receiver Gain Control

General Test Equipment

Features

S

250MHz to 4000MHz RF Frequency Range

S

Integrates Two Analog Attenuators in One

Monolithic Device

S

Flexible Attenuation-Control Ranges

22dB (per Attenuator)

44dB (Both Attenuators Cascaded)

S

2.4dB 1500MHz Insertion Loss (per Attenuator)

S

Linear dB/V Analog Control Response Curve

Simplifies Automatic Leveling Control and

Gain-Trim Algorithms

S

Excellent Attenuation Flatness Over Wide

Frequency Ranges and Attenuation Settings

S

Low 7.3mA Supply Current

S

Single +5.0V Supply Voltage

Ordering Information

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

T = Tape and reel.

WiMAX is a trademark of WiMAX Forum.

cdma2000 is a registered trademark of Telecommunications

Industry Association.

PART

TEMP RANGE

PIN-PACKAGE

MAX19790ETX+

-40NC to +85NC

36 Thin QFN-EP*

MAX19790ETX+T

-40NC to +85NC

36 Thin QFN-EP*