Digital Step Attenuator

DAT-3175A-SN+

Page 3 of 8

Parameter

Freq. Range

(GHz)

Min.

Typ.

Max.

Units

Accuracy @

1 dB Attenuation Setting

0.001-1.2

—

0.03

0.18

dB

1.2-2.0

—

0.1

0.20

2.0-2.5

—

0.1

0.23

Accuracy @

2 dB Attenuation Setting

0.001-1.2

—

0.07

0.21

dB

1.2-2.0

—

0.15

0.26

2.0-2.5

—

0.15

0.31

Accuracy @

4 dB Attenuation Setting

0.001-1.2

—

0.05

0.27

dB

1.2-2.0

—

0.15

0.36

2.0-2.5

—

0.2

0.47

Accuracy @

8 dB Attenuation Setting

0.001-1.2

—

0.1

0.39

dB

1.2-2.0

—

0.24

0.60

2.0-2.5

—

0.35

0.79

Accuracy @

16 dB Attenuation Setting

0.001-1.2

—

0.23

0.63

dB

1.2-2.5

—

0.8

1.0

2.0-2.5

—

0.8

1.43

0.001-1.2

—

1.2

1.8

dB

1.2-2.5

—

1.6

1.9

VSWR

0.001-1.2

—

1.3

—

:1

1.2-2.5

—

1.4

—

Input IP3 (at Min. and Max. Attenuation)

.005-2.5

—

55-69

—

dBm

Input IP2

.005-2.5

See Fig. 1

dBm

Input Power @ 0.1dB Compression

(at Min. and Max. Attenuation)

0.030-2.5

—

+30

—

dBm

Input Operating Power

1 MHz to 30 MHz

—

—

See Fig. 2

dBm

>30 MHz

—

—

+24

Thermal Resistance (Junction to case)

—

—

25

—

°C/W

1. I. Loss values are de-embedded from test board Loss (test board’s Insertion Loss:

0.10dB @100MHz, 0.40dB @1200MHz, 0.55dB @2000MHz, 0.75dB @4000MHz).

2. For operation above +3.6V see application note, AN-70-032

3. 0V during power-up.

Switching Specifications

Parameter

Min.

Typ.

Max.

Units

Switching Speed, 50% Control to

0.5dB of Attenuation Value

—

0.4

0.7

µSec

Switching Control Frequency

—

1.0

—

MHz

DC Electrical Specifications

Parameter

Min.

Typ.

Max.

Units

2.7

3

V

—

—

80

µA

Control Input Low

-0.3

—

V

-3.6

—

-3.2

V

-40

—

—

µA

Control Input High

1.17

—

3.6

V

Control Current

—

—

20

µA

0

20

40

60

80

100

120

5

50

500

5000

Frequency (MHz)

0 dB

31.5 dB

Figure 1. IP2 vs. frequency and attenuation

4. Permanent damage may occur if any of these limits are exceeded.

5. Operation between max operating and absolute max input power will result in reduced reliability.

Parameter

Ratings

Operating Temperature

-40°C to 105°C

Storage Temperature

-65°C to 150°C

-0.3V Min., 5.5V Max.

-3.8V Min.

Voltage on any input

-0.3V Min., 3.6V Max.

Input Power

1-30 MHz

Figure 2

30-2500MHz

+30dBm