AA280 Alpha Industries, AA280 Datasheet

AA280

Manufacturer Part Number

AA280

Description

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

Manufacturer

Alpha Industries

Datasheet

1.AA280.pdf (5 pages)

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Download datasheet (455Kb)

GaAs IC 5 Bit Digital Attenuator

0.5 dB LSB DC–2 GHz

Features

I Attenuation 0.5 dB Steps to 15.5 dB

I Low DC Power Consumption

I Low Cost SOIC-16 Plastic Package

Description

The AD280-25 is a 5 bit, GaAs IC FET digital attenuator

in a low cost SOIC-16 package. This attenuator has an

LSB of 0.5 dB and a total attenuation of 15.5 dB.

The AD280-25 is particularly suited where high

attenuation accuracy, low insertion loss and low

intermodulation products are required. Typical applications

include cellular radio, wireless data, wireless local loop and

other gain level control circuits.

Electrical Specifications at -40°C to +85°C (0, -5 V)

1. All measurements made in a 50 Ω system, unless otherwise specified.

2. DC = 300 kHz.

3. Attenuation referenced to insertion loss.

*Due to conflict with another company’s product numbering system, Alpha’s attenuator products starting with the letters “AD” are being changed to “AA”.

Insertion Loss

Attenuation Range

Attenuation Accuracy

VSWR (I/O

Switching Characteristics

Input Power for 1 dB Compression

Intermodulation Intercept Point (IP3)

Control Voltages

with High Accuracy

Parameter

Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com

Rise, Fall (10/90% or 90%/10% RF)

On, Off (50% CTL to 90%/10% RF)

Video Feedthru

For Two-tone Input Power +5 dBm

Low

High

= 0 to 0.2 V @ 20 µA Max.

= -5 V @ 300 µA Max.

Specifications subject to change without notice. 11/00A

Condition

SOIC-16

4. Input/Output

5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.

0.010 (0.25 mm)

0.004 (0.10 mm)

INDICATOR

(1.73 mm) MAX.

PIN 1

PIN 16

PIN 1

0.068

DC–0.5 GHz

DC–1.0 GHz

DC–2.0 GHz

DC–1.0 GHz

DC–2.0 GHz

0.5–2.0 GHz

0.05 GHz

0.5–2.0 GHz

0.05 GHz

Frequency

0.394 (10.00 mm)

0.386 (9.80 mm)

0.0098 (0.25 mm)

0.0075 (0.19 mm)

0.049 (1.24 mm)

0.016 (0.41 mm)

± (0.2 + 3% of

Attenuation Setting in dB)

± (0.4 + 3% of

Attenuation Setting in dB)

Min.

+24

+17

+44

+35

0.020 (0.51 mm)

0.013 (0.33 mm)

(Previously AD280-25)*

1.4:1

Typ.

15.5

1.1

1.4

1.7

+29

+22

+50

+40

0.244 (6.20 mm)

0.228 (5.80 mm)

0.158 (4.00 mm)

0.150 (3.80 mm)

(1.27 mm) BSC

AA280-25

Max.

1.8:1

1.3

1.7

2.0

0.050

0.016 MAX.

CHAMFER

(0.41 mm)

x 45˚

8˚ MAX.

Unit

dBm

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