Sigint Solutions
 

 

Digital Attenuators

 vaunix-digital-attenuators
The LDA series of Lab Brick Digital Attenuators boast 63 dB of programmable attenuation through 6 GHz, and can be used in the development of low-cost fading simulators for Multiple Input Multiple Output (MIMO) and Single Input Multiple Output (SIMO) communication systems such as WiMAX, 3G and LTE.





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Description

The LDA series of Lab Brick® Digital Attenuators includes 50 Ohm RF step attenuators with calibrated operation up to 6 GHz. These units connect to a USB port for control and power and require no additional DC supply voltage. They are easily programmable for fixed attenuation or swept attenuation ramps directly from the included GUI. Lab Brick Digital Attenuator API DLL and LabVIEW-compatible drivers are also available for custom programming applications.

The Lab Brick Digital Attenuators are ideal for engineering and production test laboratories as well as integration into high speed automatic-test-equipment (ATE) systems. They can also be used in development of low-cost fading simulators for Multiple Input Multiple Output (MIMO) and Single Input Multiple Output (SIMO) communication systems such as WiMAX, 3G and LTE. They are based on GaAs monolithic-microwave-integrated-circuit (MMIC) attenuator technology for excellent repeatability of attenuation values.

Each device comes with a USB flash drive containing the GUI software and digital version of the programming guide, along with a 6-ft. USB cable. The Lab Brick Digital Attenuator GUI is compatible with Microsoft Windowsâ„¢ standard operating systems for personal computers, including Windows 2000, Windows XP, Windows Vista, and Windows 7. They are housed in rugged aluminum enclosures, each measuring 3.86 x 2.52 x 1.35 in. (98 x 54 x 34 mm) and weigh just 0.5 lb. (0.23 kg). All Lab Brick LDA Digital Attenuators are ROHS compliant.

Features and Benefits
  • USB powered and controlled
  • Includes easy-to-install-and-use GUI
  • Programmable attenuation ramp
  • Operate multiple devices directly from a PC or self-powered USB hub
  • Easily programmable for ATE applications
  • Robust aluminum construction
Applications
  • Automated Test Equipment (ATE)
  • WiMAX, 3G Fading Simulators
  • Engineering/Production Test Labs




Technical Specifications

LDA-102 LDA-302P-H LDA-302P-1 LDA-302P-2 LDA-602
Frequency Range [MHz] 0.1-1000 10-3000 10-3000 10-3000 6-6000
Attenuation [dB] 63 31.5 63 90 63
Step Size [dB] 0.5 0.5 1.0 2.0 0.5
Input Max Level2 [dBm] +22 +33 +33 +33 +22
Input IP3 [dBm] +32 +68 +68 +68 +32
Insertion Loss <1GHz [dB] 7 4.5 4.5 4.5 7
Insertion Loss 1-2GHz [dB] - 5.5 5.5 5.5 8
Insertion Loss 2-3GHz [dB] - 7.5 7.5 7.5 9
Insertion Loss 4-6GHz [dB] - - - - 10
Attenuation Accuracy3 ± 0.3 + 5% of Atten. Setting, with a maximum of 3.5 dB
Switching Speed 70 nS typ. 2 us typ. 2 us typ. 2 us typ. 70 nS typ.
Input/Output VSWR 2.0:1 max, 1.3:1 typ.
DC Power 5V/65 mA
GUI Compatibility4 Windowsâ„¢ 7/2000/XP/Vista
Mechanical Dimensions 3.86" x 2.52" x 1.35" (98 mm x 54 mm x 34 mm)
Weight < 0.5 lbs (0.23 Kg)
RF Connectors SMA-F
USB Cable5 USB 2.0 A/miniB
Notes 1These specifications are subject to change without notice.
2Exceeding the maximum input level may cause permanent damage.
3Customized models are available tailored to specific performance requirements.
4The GUI software is included with the purchase of each Lab Brick Digital Attenuator.
5A 6’ USB cable is included with the purchase of each Lab Brick Digital Attenuator.
                             


Performance

LDA-102

LDA-302P-H

LDA-302P-1


LDA-302P-2

LDA-602