MACOM AT65-0106TR, AT65-0106-TB, AT65-0106 Datasheet

Digital Attenuator, 50 dB, 6-Bit,
TTL Driver, DC - 2.0 GHz

V 6.00

AT65-0106

Features

n Attenuation: 1 dB Steps to 50 dB
n Low DC Power Consumption
n Plastic SOIC, 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 AT65-0106 is a GaAs FET 6-bit digital
attenuator with a 1 dB minimum step size and a 50 dB total
attenuation range. This device is in a SOIC-24, wide body
plastic surface mount package. The AT65-0106 is ideally
suited for use where accuracy, fast speed, very low power
consumption and low costs are required.

SOW-24

Package outline conforms to JEDEC standard MS-013AD.

Electrical Specifications: TA = 25°C

Parameter Test Conditions Frequency Units Min Typ Max

Insertion Loss — DC - 2.0 GHz dB — 4.2 4.7

Attenuation

Accuracy

VSWR Full Range DC - 2.0 GHz Ratio — 1.8:1 2:1

Switching Speed

1 dB Compression —

Input IP

3

Vcc

-Vee

Logic “0” Sink Current is 20 µA max. — V 0.0 — 0.8
Logic “1” Sink 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 (.01µF) are required on power supply lines.

Individual Bits 1-2-4-8-16-32 dB

Any Combination of Bits 3 to 15 dB
Any Combination of Bits 17 to 31 dB
Any Combination of Bits 32 to 50 dB

1

50% Cntl to 90%/10% RF

10% to 90% or 90% to 10%

—

Two-tone inputs up to +5 dBm

@ 0 dB Attenuation

—
—

DC - 2.0 GHz
DC - 2.0 GHz
DC - 2.0 GHz
DC - 2.0 GHz

—
—

50 MHz

0.5 - 2.0 GHz
50 MHz

0.5-2.0 GHz
—

—

dB
dB
dB
dB

nS
nS

dBm
dBm — —

dB
dB

V V 4.75

—
—
—
—

—
—

— — +35

-8.0

—

±(.3 +3% of atten setting)

—

±(.5 +5% of atten setting)

—

±(.3 +3% of atten setting)

—

±(.5 +7% of atten setting)

75
20

+21
+29

+48

5.0

-5.0

150

50
—

—
—

—

5.25

-4.75

Digital Attenuator, 50 dB, 6-Bit, TTL Driver, DC - 2.0 GHz

AT65-0106

V 6.00

Pin Configuration

Pin # Function Pin # Function

1 GND 13 RF
2 GND 14 GND
3 GND 15 GND
4 C32 16 GND
5 C16 17 GND
6 -Vee 18 GND
7 +Vcc 19 GND
8 C8 20 GND

9 C4 21 GND
10 C2 22 GND
11 C1 23 GND
12 GND 24 RF

Truth Table

C32 C16 C8 C4 C2 C1 Attenuation

0 0 0 0 0 0 Loss,

0 0 0 0 0 1 1 dB
0 0 0 0 1 0 2 dB
0 0 0 1 0 0 4 dB
0 0 1 0 0 0 8 dB
0 1 0 0 0 0 16 dB
1 0 0 0 0 0 32 dB
1 1 0 0 1 0 50 dB

0 = TTL Low; 1 = TTL High

Reference

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

+27 dBm
+34 dBm

Typical Performance Curves

+25°C +85°C -40°C

5

4

3

Attenuation (dB)

2

0.0 0.5 1.0 1.5 2.0

Frequency (GHz)

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.

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

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

1 dB Bit vs. Temperature Loss vs. Temperature

1.4

1.2

Attenuation (dB)

1.0

0.0 0.5 1.0 1.5 2.0

Frequency (GHz)

2