MAX19790 Datasheet, PDF (1/11 Pages) Maxim Integrated Products – 250MHz to 4000MHz Dual, Analog Voltage Variable Attenuator

19-5165; Rev 0; 3/10
250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
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™,
cdma2000^®, GSM/EDGE, and MMDS Base
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
PART
TEMP RANGE PIN-PACKAGE
MAX19790ETX+ -40NC to +85NC 36 Thin QFN-EP*
MAX19790ETX+T -40NC to +85NC 36 Thin QFN-EP*
+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.
________________________________________________________________ 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.