Digital Attenuator, 31.0 dB, 1 dB

LSB, 5-Bit, 800 - 2500 MHz

V 2.00

Features

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5 Bits, 1 dB Steps

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Excellent Accuracy

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Positive Control (+3 to +5V)

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Small Low Cost QSOP-16 (SSOP-16) Package

Description

The M/A-COM MAATSS0002 is a 1 dB step GaAs MMIC

digital attenuator with 31.0 dB dynamic range in a low cost

QSOP-16 (SSOP-16) package.

It requires external DC

blocking capacitors on the RF ports, positive supply voltage

and five individual bit control voltages. It is particularly

suited where high attenuation accuracy, low insertion loss

and low intermodulation products are required.

Typical

applications include base stations, wireless data, and

wireless local loop gain level control circuits.

The MAATSS0002 is fabricated using M/A-COM’s GaAs

1.0 micron process.

The process features full chip

passivation for increased performance and reliability.

Ω

Parameter

Conditions

Frequency

Units

Min.

Typ.

Max.

Insertion Loss

—

0.8 - 1.5 GHz

1.5 - 2.0 GHz

2.0 - 2.5 GHz

dB

dB

dB

—

—

—

1.8

2.2

2.7

1.9

2.3

2.9

Accuracy

—

0.8 - 1.5 GHz

1.5 - 2.0 GHz

2.0 - 2.5 GHz

± (0.3 dB + 4% of Attenuation)

± (0.3 dB + 3% of Attenuation)

± (0.4 dB + 3% of Attenuation)

Step Change

—

0.8 - 1.5 GHz

1.5 - 2.0 GHz

2.0 - 2.5 GHz

dB

dB

dB

0.4

0.4

0.4

1.0

1.0

1.0

1.4

1.6

1.8

Attenuation Range

—

0.8 - 2.5 GHz

dB

30.0

31.0

32.2

VSWR

—

0.8 - 2.5 GHz

dB

—

—

2.0:1

Trise, Tfall

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

—

µS

—

2

—

Ton, Toff

50% Control to 10% / 90% RF

—

µS

—

2

—

Transients

In Band

—

mV

—

120

—

P1dB

+3V

+5V

0.8 - 2.5 GHz

0.8 - 2.5 GHz

dBm

dBm

15

18

—

—

—

—

IP3

+3V Input Power up to + 5 dBm

+5V Input Power up to +5 dBm

0.8 - 2.5 GHz

0.8 - 2.5 GHz

dBm

dBm

34

43

—

—

—

—

Control Voltages

Vlow = 0.0 ± 0.2V @ 20 µA, 40 µA Max.

Vhigh = +3 ± 0.2V or +5V ± 0.2V @ 20 µA, 40 µA Max.

Vs = Vhigh @ 200 µA Max

Functional Schematic

Absolute Maximum Ratings

1

1. Operation of this device above any one of these

parameters may cause permanent damage.

Parameter

Absolute Maximum

Max Input Power

0.8 - 2.5 GHz

+34 dBm

Operating Temperature

-40°C to +85°C

Storage Temperature

-65°C to +150°C

1dB

16dB

2dB

VC5

VC4

VC3

VC2

VC1