GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB DC–2 GHz

AA280-25

5

Alpha Industries, Inc. [781] 935-5150

• Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com

Specifications subject to change without notice. 11/00A

Truth Table

GND GND GND GND GND GND

12

3

4

5

6

7

8

16

15

14

13

12

11

10

9

8 dB

4 dB

2 dB

1 dB 0.5 dB

Characteristic

Value

RF Input Power

2.0 W > 500 MHz 0/-8 V

0.5 W > 50 MHz 0/-8 V

Control Voltage

+0.2 V, -8 V

Operating Temperature

-40°C to +85°C

Storage Temperature

-65°C to +150°C

85°C/W

Absolute Maximum Ratings

Pin Out

Note: Exceeding these ratings may cause irreversible damage.

0.5 dB

1 dB

2 dB

4 dB

8 dB

Bit

Bit

Bit

Bit

Bit

-5

-5

-5

0

-5

0

-5

0

Reference I.L.

0

-5

-5

0

-5

0

-5

0

0.5 dB

-5

0

-5

0

-5

0

-5

0

1 dB

-5

-5

0

-5

-5

0

-5

0

2 dB

-5

-5

-5

0

0

-5

-5

0

4 dB

-5

-5

-5

0

-5

0

0

-5

8 dB

0

0

0

-5

0

-5

0

-5

15.5 dB

Max. Atten.

Attenuation

Attenuation (dB)

IP3 vs. Attenuation and Temperature

47

48

49

50

51

52

53

54

55

56

57

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

+25˚C

+85˚C

-40˚C

Compression Point vs. Attenuation,

Voltage, and Temperature

Attenuation

Control

Input Power @ 1 dB Compression

State

Voltage (V) +25°C (dBm) +85°C (dBm) -40°C (dBm)

Ins. Loss

-3

22.70

23.30

24.20

0.5 dB

-3

23.50

24.20

25.10

1.0 dB

-3

24.60

25.00

25.90

2.0 dB

-3

22.90

23.40

24.30

4.0 dB

-3

31.60

31.80

33.10

8.0 dB

-3

31.00

28.70

26.40

15.5 dB

-3

25.00

24.40

25.00