®

Lab Brick
LDA Series Digital Attenuators

Electrical• Input power to 2 Watts• 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

Lab Brick Digital Attenuators are bidirectional 50 Ohm RF
step attenuators with calibrated operation up to 6 GHz andpower handling up to 2 Watts. A simple connection to a USB
host provides DC power and control. No additional DC supply
voltage is required. Lab Brick Digital Attenuators are easily
programmable for fixed attenuation or swept attenuation
ramps directly from the included GUI. Lab Brick DigitalAttenuator Windows®/Linux API dll's and LabVIEW compatible
drivers are also available for custom programming applications.
Applications include:• Automated Test Equipment (ATE)• WiMAX, 3G, 4G, LTE, DVB Fading Simulators

LDA Series

Operating Frequency, 50 Ohm
LDA-102
LDA-102E
LDA-302P-H
LDA-302P-1
LDA-302P-2
LDA-602
LDA-602E

1 to 1000 MHz
10 to 1000 MHz
10 to 3000 MHz
10 to 3000 MHz
10 to 3000 MHz
6 to 6000 MHz
400 to 6000 MHz

Operating Frequency, 75 Ohm
LDA-102-75F

10 to 1000 MHz

Attenuation:
LDA-102
LDA-102-75F
LDA-102E
LDA-302P-H
LDA-302P-1
LDA-302P-2
LDA-602
LDA-602E

Range
63 dB
95 dB
120 dB
31.5 dB
63 dB
90 dB
63 dB
120 dB

Step Size
0.5 dB
0.5 dB
0.5 dB
0.5 dB
1.0 dB
2.0 dB
0.5 dB
0.5 dB

Input:
LDA-102
LDA-102-75F
LDA-102E
LDA-302P-X
LDA-602
LDA-602E

Max Level2+22 dBm+30 dBm+30 dBm+33 dBm+22 dBm+30 dBm

Input IP3+32 dBm+52 dBm+55 dBm+68 dBm+32 dBm+55 dBm

Insertion Loss:
LDA-102
LDA-102-75F
LDA-102E
LDA-302P-X
LDA-602
LDA-602E<1 GHz
7 dB
6 dB
5 dB
4.5 dB
7 dB
5.5 dB

1-2 GHz———5.5 dB
8 dB
6.5 dB

4-6 GHz————10 dB
9.5 dB

Attenuation Accuracy3
LDA-102, LDA-302, LDA-602± 0.3 + 5% (3.5 dB max)
LDA-102E, LDA-102-75F, LDA-602E± 0.3 + 3%
Switching Speed
LDA-102
LDA-102-75F
LDA-102E
LDA-302P-X
LDA-602
LDA-602E
Input/Output VSWR

• Engineering/Production Test Labs

2-3 GHz———
7.5 dB
9 dB
7.5 dBDC Power
GUI Compatibility4

70 nS typ.
1.5 us typ.
4 us typ.
2 us typ.
70 ns typ.
4 us typ.
2.0:1 max, 1.3:1 typ.
5V/65 mA
Windows™ 7, 8, XP, 2000

MechanicalNotes
1. These specifications are subject to change without notice.
2. Exceeding the maximum input level may cause permanent damage.
3. Customized models are available tailored to specific performance requirements.
4. The GUI software is included with the purchase of each Lab Brick Digital
Attenuator.
5. A 6’ USB cable is included with the purchase of each Lab Brick Digital
Attenuator.

Vaunix Technology Corporation
7 New Pasture Road, Newburyport, MA 01950
978-662-7839 | www.Vaunix.com

Dimensions
LDA-102, LDA-302, LDA-602

3.86" x 2.52" x 1.35"(98 mm x 54 mm x 34 mm)
LDA-102E, LDA-602E
4" x 2.5" x .94"
(101.6 mm x 63.5 mm x 23.9 mm)

WeightLDA-102, LDA-302, LDA-602
LDA-102E, LDA-602E< 0.5 lbs (0.23 Kg)
0.6 lbs (0.27 Kg)

RF Connectors
LDA-102, LDA-302, LDA-602
LDA-102E, LDA-602E

SMA-F or Type N-F
SMA-F

USB Cable5
LDA-102, LDA-302, LDA-602
LDA-102E, LDA-602E

USB 2.0 A/miniB
USB 2.0 A/B

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Lab Brick
LDA Series Digital Attenuators

LDA-102
LDA-302
LDA-602

LDA-102E
LDA-602E

4.00
2.00

3.40

0.35
CONNECTOR, USB MINI

2.50

1.81
1.40
0.95

MOUNTING HOLES
FOR #4 SOCKET HD CAP SCREWNOT PROVIDED
2 PLACES
0.90

0.54

LED, GREEN
0.47

CONNECTOR, SMA, FEMALE
2 PLACES

0.94

1.17

RUBBER FEET
4 PLACES

See performance graphs online at www.vaunix.com

Vaunix Technology Corporation
7 New Pasture Road, Newburyport, MA 01950
978-662-7839 | www.Vaunix.com