HMC939
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Analog Devices Inc. HMC939

Manufacturer No:
HMC939
Manufacturer:
Analog Devices Inc.
Package:
Bulk
Description:
RF ATTENUATOR 31DB 50OHM DIE
Delivery:
Payment:
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Product Introduction

Overview

The HMC939 is a broadband 5-bit GaAs IC digital attenuator MMIC chip produced by Analog Devices Inc. This component operates across a wide frequency range of 0.1 to 40 GHz, making it highly versatile for various high-frequency applications. The attenuator features 1.0 dB least significant bit (LSB) steps, allowing for a total attenuation range of 31 dB. It is designed with a single positive control line per bit, ensuring easy and precise control over the attenuation states.

Key Specifications

Parameter Frequency Range Min. Typ. Max. Units
Insertion Loss 0.1 - 18.0 GHz - 4.0 5.5 dB
Insertion Loss 18.0 - 26.5 GHz - 5.5 7.0 dB
Insertion Loss 26.5 - 33.0 GHz - 6.5 8.5 dB
Attenuation Range 0.1 - 33.0 GHz - - 31 dB
Return Loss (RF1 & RF2, All Atten. States) 0.1 - 33.0 GHz - - 12 dB
Input Third Order Intercept Point (Two-Tone Input Power= 0 dBm Each Tone) 0.1 - 0.5 GHz - 40 - dBm
Input Third Order Intercept Point (Two-Tone Input Power= 0 dBm Each Tone) 0.5 - 33.0 GHz - 43 - dBm
Switching Characteristics tRISE, tFALL (10/90% RF) 0.1 - 33.0 GHz - 60 90 ns
Switching Characteristics tON/tOFF (50% CTL to 10/90% RF) 0.1 - 33.0 GHz - 60 90 ns
Idd 0.1 - 33.0 GHz 2.5 4.5 6.5 mA
Iss 0.1 - 33.0 GHz -7.0 -5.0 -3.0 mA
Operating Temperature - -40 - 85 °C

Key Features

  • 5-bit digital attenuator with 1.0 dB LSB steps up to 31 dB total attenuation.
  • Operates across a broad frequency range of 0.1 to 40 GHz.
  • High input IP3 of +43 dBm.
  • Single positive control line per bit for easy control.
  • Low insertion loss, typically less than 5 dB.
  • Excellent attenuation accuracy with ±0.4 dB typical step error.
  • Available in die form and low-cost leadless surface mount packages (e.g., HMC939LP4 and HMC939LP4E).

Applications

  • Fiber Optics and Broadband Telecom.
  • Microwave Radio and VSAT (Very Small Aperture Terminal) systems.
  • Military Radios, Radar, and Electronic Countermeasures (ECM).
  • Space Applications.
  • Sensors and Test & Measurement Equipment.

Q & A

  1. What is the frequency range of the HMC939 attenuator?

    The HMC939 operates across a frequency range of 0.1 to 40 GHz.

  2. What is the attenuation step size and total attenuation range of the HMC939?

    The HMC939 has 1.0 dB least significant bit (LSB) steps, providing a total attenuation range of 31 dB.

  3. What is the typical insertion loss of the HMC939?

    The typical insertion loss is less than 5 dB.

  4. What is the input IP3 of the HMC939?

    The input IP3 is +43 dBm.

  5. How is the attenuation controlled in the HMC939?

    The attenuation is controlled by a single positive control line per bit.

  6. What are the typical switching times for the HMC939?

    The typical rise and fall times (tRISE, tFALL) are 60-90 ns, and the typical on/off times (tON/tOFF) are also 60-90 ns.

  7. What are the current consumption specifications for the HMC939?

    The current consumption (Idd) ranges from 2.5 to 6.5 mA, and the current sink (Iss) ranges from -7.0 to -3.0 mA.

  8. What are the operating temperature limits for the HMC939?

    The operating temperature range is from -40°C to +85°C.

  9. In what types of packages is the HMC939 available?

    The HMC939 is available in die form and in low-cost leadless surface mount packages (e.g., HMC939LP4 and HMC939LP4E).

  10. What are some typical applications for the HMC939?

    Typical applications include Fiber Optics, Broadband Telecom, Microwave Radio, VSAT, Military Radios, Radar, ECM, Space Applications, Sensors, and Test & Measurement Equipment.

Product Attributes

Attenuation Value:31dB
Frequency Range:100 MHz ~ 40 GHz
Power (Watts):- 
Impedance:50 Ohms
Package / Case:Die
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Similar Products

Part Number HMC939 HMC939A
Manufacturer Analog Devices Inc. Analog Devices Inc.
Product Status Obsolete Active
Attenuation Value 31dB 31dB
Frequency Range 100 MHz ~ 40 GHz 100 MHz ~ 40 GHz
Power (Watts) - -
Impedance 50 Ohms -
Package / Case Die Die

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