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250MHz to 4000MHz Dual, Analog Voltage Variable Attenuator

High-Performance RF VVA Features 44dB of Linearly Controlled Dynamic Range and Excellent Attenuation Flatness

Product Details

Key Features

Applications/Uses

Parametric specs for RF and IF Variable Gain Amplifiers
Gain Control Analog
# Channels 1
2
RF Freq. (MHz) (min) 250
RF Freq. (MHz) (max) 4000
Analog Attenuation Range 44.7
Gain (dB) (max) -4.4
Noise Figure (dB) 4.4
OIP3 (dBm) 31.9
OIP2 (dBm) 65.2
HD2 (dBc) -72
HD3 (dBc) -77
VCC (V) 4.75 to 5.25
ISUPPLY (mA) 7.3
Footprint (mm x mm) 6.0 x 6.0
Package/Pins TQFN/36
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
7.08
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Simplified Block Diagram

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Parameters

Parametric specs for RF and IF Variable Gain Amplifiers
Gain Control Analog
# Channels 1
2
RF Freq. (MHz) (min) 250
RF Freq. (MHz) (max) 4000
Analog Attenuation Range 44.7
Gain (dB) (max) -4.4
Noise Figure (dB) 4.4
OIP3 (dBm) 31.9
OIP2 (dBm) 65.2
HD2 (dBc) -72
HD3 (dBc) -77
VCC (V) 4.75 to 5.25
ISUPPLY (mA) 7.3
Footprint (mm x mm) 6.0 x 6.0
Package/Pins TQFN/36
Oper. Temp. (°C) -40 to +85
Budgetary
Price (See Notes)
7.08

Key Features

  • 250MHz to 4000MHz RF Frequency Range
  • Integrates Two Analog Attenuators in One Monolithic Device
  • Flexible Attenuation-Control Ranges
    • 22dB (per Attenuator)
    • 44dB (Both Attenuators Cascaded)
  • 2.4dB 1500MHz Insertion Loss (per Attenuator)
  • Linear dB/V Analog Control Response Curve Simplifies Automatic Leveling Control and Gain-Trim Algorithms
  • Excellent Attenuation Flatness Over Wide Frequency Ranges and Attenuation Settings
  • Low 7.3mA Supply Current
  • Single +5.0V Supply Voltage

Applications/Uses

  • Automatic Level Control (ALC)
  • Broadband System Applications, Including Wireless Infrastructure Digital and Spread-Spectrum Communication Systems
  • General Test Equipment
  • Lineup Gain Trim
  • Microwave Terrestrial Links
  • Receiver Gain Control
  • Temperature Compensation Circuits
  • Transmitter Gain Control
  • VSAT/Satellite Modems
  • WCDMA/LTE, TD-SCDMA/TD-LTE, WiMAX®, cdma2000®, GSM/EDGE and MMDS Base Stations

Description

The MAX19790 is a dual, general-purpose analog voltage variable attenuator (VVA) designed to interface with 50Ω systems operating in the 250MHz to 4000MHz frequency range. Each attenuator includes a control 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 operates from a single +5.0V supply and is available in a compact, 36-pin thin QFN package (6mm x 6mm x 0.8mm) with an exposed pad. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.

Simplified Block Diagram

MAX19790: Typical Application Circuit MAX19790: Typical Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .