Digital Step Attenuator

DAT-31A-SN+

Page 7 of 8

Bill of Materials

N1-N6, N11, N12,

N15 & N18

Resistor 0603 10 KOhm +/- 1%

N26

Resistor 0603 0 Ohm

N10, N16, N17, N20

& N23

NPO Capacitor 0603 100pF +/- 5%

N21 & N22

Tantalum Capacitor 0805 100nF +/- 10%

N19

Hex Invert Schmitt Trigger MSL1

TB-342

Notes

1. Both RF ports must be held at 0VDC or DC blocked with an external series capacitor.

2. Test Board TB-342 is designed for operation for VDD=2.3 to 3.6V. For operation over 3.6V to 5.2V, See Application Note AN-70-006

3. VDD=Vdd

Fig 3. Evaluation Board Schematic, TB-342, used for characterization (DUT not soldered on TB-342)

Test Equipment

For Insertion Loss, Isolation and Return Loss:

Agilent’s E5071C Network Analyzer & E3631A Power Supply.

For Compression:

Agilent’s N9020A Signal Analyzer, E8247C RF Generator,

E3631A Power Supply & U2004A Power Sensor.

For Input IP3:

Agilent’s N9020A Signal Analyzer, N5181A

Signal Generators, E3631A Power Supply, U2004A Power Sensor.

For Spurs:

Agilent N5181A Signal Generator, E4440A Spectrum Analyzer.

For Switching Time:

Agilent’s N5181A Signal Generator, 81110A Pulse Generator,

54832B Oscilloscope, E3631A Power Supply.

For Max Control Frequency:

Agilent’s N5181A Signal Generator, N9020A Signal Analyzer,

E3631A Power Supply, 81110A Pulse Generator.

Measurement Conditions

For Insertion Loss, Isolation and Return Loss:

VDD=+2.7/+3/+5.5V &Pin=0dBm

VSS=-3.2/-3.6V

For Compression: Pin=0/+24dBm. VDD=+3V, VSS=-3V

For Input IP3: Pin=+10dBm/tone.

Tone spacing: 0.1 MHz to 1 MHz RF Freq and 1 MHz to 4200 MHz RF Freq,

VDD=+3V, VSS=-3V

For Spurs: RF IN at 1000MHz and -20dBm. VDD=+3V

For Switching Time:

RF Freq=501MHz/0dBm, Pulse for LE=1Hz/0/+3.4V, Delay=500ms,

Width=500ms. VDD=+3V & VSS=-3V

For Max Control Frequency:

RF Freq=501MHz, 0dBm. VDD=+3V, VSS=-3V