Alpha Industries, Inc. [781] 935-5150

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

1

Specifications subject to change without notice. 4/01A

GaAs IC 6 Bit Digital Attenuator with Driver

0.5 dB LSB Positive Control DC–1 GHz

Features

I Attenuation 0.5 dB Steps to 31.5 dB With

High Accuracy

I Single Positive Control (+5 V) for Each Bit

I Low DC Power Consumption

I CMOS Integrated Silicon Driver

I Designed for Use at IF Frequencies

MLF 5 x 5 (-310)

AA113-310

0.001

(0.025 mm)

0.039 (1.00 mm) MAX.

SEATING

PLANE

12˚ MAX.

0.197 (5.00 mm) BSC

0.197

(5.00 mm)

BSC

1

32

0.187

(4.75 mm) BSC

0.187

(4.75 mm)

BSC

PIN 1

INDICATOR

0.122 (3.10 mm)

± 0.006 (0.15 mm)

0.122 (3.10 mm)

± 0.006 (0.15 mm)

32

1

0.138 (3.50 mm) REF.

0.138

(3.50 mm) REF.

0.019 (0.50 mm) BSC

Description

The AA113-310 is a 6 bit, single positive control GaAs IC

FET digital attenuator with driver. It is particularly suited

at IF frequencies where high attenuation accuracy, low

insertion loss and low intermodulation products are

required. Typical applications include base station,

wireless data, broadband and wireless local loop gain

control circuits.

Frequency

Min.

Typ.

Max.

Unit

DC–0.5 GHz

1.5

1.8

dB

DC–1.0 GHz

1.8

2.2

dB

Attenuation Range

31.5

dB

DC–0.5 GHz

± (0.2 + 2% of

Attenuation Setting in dB)

dB

DC–1.0 GHz

± (0.25 + 3% of

Attenuation Setting in dB)

dB

DC–1.0 GHz

1.4:1

1.6:1

Electrical Specifications at 25°C (0, +5 V)

Preliminary

Parameter

Condition

Frequency

Min.

Typ.

Max.

Unit

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

30

ns

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

50

ns

Video Feedthru

50

mV

Input Power for 1 dB Compression

0.5–1.0 GHz

+29

dBm

0.05 GHz

+22

dBm

Intermodulation Intercept Point (IP3)

For Two-tone Input Power +5 dBm

0.5–1.0 GHz

+48

dBm

0.05 GHz

+36

dBm

Supply Voltage

Control Voltages

Operating Characteristics at 25°C (0, +5 V)

1. All measurements made in a 50

Ω system, unless otherwise specified.

2. Insertion loss changes by 0.003 dB/°C.

3. Attenuation referenced to insertion loss.

4. Input/output.

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