Digital Attenuator, 1-Bit, 15 dB

DC-2.0 GHz

AT-267

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information.

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V4

2

Mode

(Control)

V1

V2

Attenuation

0 ± 0.2V

+2.5V to +5V

+2.5V to +5V

0 ± 0.2V

15 dB

Reference State

0 ± 0.2V

-2.5V to -5V

-2.5V to -5V

0 ± 0.2V

Reference State

15 dB

4. External DC blocking capacitors are required as noted.

5. If negative control is used, DC blocking capacitors are not

required on RF ports and ground.

Positive Control Voltage Schematic

5

4

1

3

2

39 pF

39 pF

39 pF

SOT-25

Parameter

Test Conditions

Units

Min

Typ

Max

Insertion Loss

(Reference State)

1.0 GHz

2.0 GHz

dB

—

—

0.3

0.4

0.4

0.5

Attenuation

1.0 GHz

2.0 GHz

dB

dB

14.6

14.4

15.1

14.9

15.6

15.4

VSWR

1.0 GHz

2.0 GHz

Ratio

Ratio

—

—

1.2:1

1.3:1

—

—

1.0 GHz

Insertion Loss State

Attenuation State

dBm

dBm

40

40

50

50

—

—

1.0 GHz

Insertion Loss State

Attenuation State

dBm

dBm

24

20

26

23

—

—

Control Current

—

µA

—

—

10

Trise, Tfall

10% to 90% RF, 90% to 10% RF

nS

—

29

—

Ton, Toff

50% Control to 90% RF,

50% Control to 10% RF

nS

—

50

—

Transients

In-band

mV

—

10

—

3. For positive voltage control, external DC blocking capacitors are required on all RF ports (pins 1, 2 and 3).