MACOM AT65-0263TR, AT65-0263-TB, AT65-0263 Datasheet

Digital Attenuator, 31 dB, 5-Bit,
TTL Driver DC-2.0 GHz

V 6.00

AT65-0263

Features

n Attenuation: 1.0 dB Steps to 31 dB
n Low DC Power Consumption
n Plastic SOW, Wide Body, SMT Package
n Integral TTL Driver
n 50 ohm Impedance
n Test Boards are Available
n Tape and Reel Packaging Available

Description

M/A-COM's AT65-0263 is a GaAs FET 5-bit digital
attenuator with integral TTL driver. Step size is 1.0 dB
providing 31 dB total attenuation range. This device is in a
SOW-16 plastic surface mount package. The AT65-0263 is
ideally suited for use where accuracy, fast speed, very low
power consumption and low costs are required.

SOW-16

Package outline conforms to JEDEC standard MS-013AA.

Electrical Specifications: TA = 25°C

Parameter Test Conditions Frequency Units Min Typical Max

Insertion Loss — DC-1.0 GHz

Attenuation

Accuracy

VSWR Full Range DC-2.0 GHz Ratio — 1.5:1 1.8:1

Switching Speed

1 dB Compression —

Input IP

Vcc

-Vee

Logic “0” Sink Current is 20 µA max. — V 0.0 - 0.8
Logic “1” Source Current is 20 µA max. — V 2.0 - 5.0

Icc Vcc min to max, Logic “0” or “1” — mA — 0.2 6

-Iee -Vee min to max, Logic “0” or “1” — mA — -0.2 -1

1. Decoupling capacitors (.01 µF) are required on power supply lines.

1

3

Individual Bits 1-2-4-8-16

Any Combination of bits 3 - 29 dB

Any Combination of bits 30 - 31 dB

50% Cntl to 90%/10% RF

10% to 90% or 90% to 10%

—

Two-tone inputs up to +5 dBm 50 MHz

—
—

DC-2.0 GHz
DC-2.0 GHz

DC-2.0 GHz
DC-2.0 GHz

—
—

50 MHz

0.5-2.0 GHz

0.5-2.0 GHz
—

—

dB
dB

dB
dB
dB

nS
nS

dBm
dBm — —

dB
dB

V
V

—
—

—
—
—

—
—

—
—

4.75

-8.0

2.6

2.8
—

—
—

75
20

+21
+29

+35
+48

5.0

-5.0

±(.5 +5% of atten setting)
±(.5 +5% of atten setting)
±(.7 +7% of atten setting)

2.9

3.2

150

50
—

—
—

—

5.25

-4.75

Digital Attenuator, 31 dB, 5-Bit, TTL Driver, DC - 2.0 GHz

Attenuation (dB)

Loss (dB)

AT65-0263

V 6.00

Pin Configuration

Pin # Function Pin # Function

1 RF 9 C16
2 GND 10 Vcc
3 GND 11 Vee
4 GND 12 C8
5 GND 13 C4
6 GND 14 C2
7 GND 15 C1
8 RF 16 GND

Truth Table

C16 C8 C4 C2 C1 Attenuation

0 0 0 0 0 Loss, Reference
0 0 0 0 1 1.0 dB
0 0 0 1 0 2.0 dB
0 0 1 0 0 4.0 dB

Absolute Maximum Ratings

2

Parameter Absolute Maximum

Max. Input Power

0.05 GHz

0.5 - 2.0 GHz
+Vcc +5.5V

-Vee -8.5V

Logic Voltages 3 -0.5 to Vcc + 0.5V

Operating Temperature -40°C to +85°C

Storage Temperature -65°C to +125°C

2. Operation of this device above any one of these
parameters may cause permanent damange.

3. Standard CMOS TTL interface, latch-up will occur if logic
signal is applied prior to power supply.

+27 dBm
+34 dBm

Typical Performance Curves

Insertion Loss @ R, H & C

+25°C+85°C -40°C

3

0 1 0 0 0 8.0 dB
1 0 0 0 0 16.0 dB
1 1 1 1 1 31.0 dB

0 = TTL Low; 1 = TTL High

1.6

1.4

1.2

1

0.8
0 500 1000 1500 2000

Frequency (MHz)

2

1

0 500 1000 1500 2000

Frequency (MHz)

2 dB Bit @ R, H & C 1 dB Bit @ R, H & C

2.4

2.2

2

1.8

Attenuation (dB)

1.6
0 500 1000 1500 2000

Frequency (MHz)

Specifications subject to change without notice.

n North America: Tel. [phone]
n Asia/Pacific: Tel.[phone], Fax [phone]
n Europe: Tel. [phone], Fax[phone]

Visit www.macom.com for additional data sheets and product information.

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