Datasheet AT65-0413TR, AT65-0413-TB, AT65-0413 Datasheet (MACOM)

Digital Attenuator, 15 dB, 4-Bit,
TTL Driver, DC - 3.0 GHz

V 5.00

AT65-0413

Features

n Attenuation: 1.0 dB steps to 15 dB
n Low DC Power Consumption
n Integral TTL Driver
n 50 Ohm Impedance
n Temperature Stability: ±0.18 dB from -55°C to +85°C

SO-16

Typ.

Description

M/A-COM’s AT65-0413 is a GaAs FET 4-bit digital
attenuator with a 1.0 dB minimum step size and a 15 dB
total attenuation range. This device is in a SOIC-16 plastic
surface mount package. The AT65-0413 is ideally suited for
use where accuracy, fast speed, very low power
consumption and low costs are required. Typical
applications include dynamic range setting in precision
receiver circuits and other gain/leveling control circuits.

Electrical Specifications: TA = 25°C

Parameter Test Conditions Frequency Units Min. Typ. Max.

Insertion Loss — DC - 0.5 GHz

Attenuation Accuracy

VSWR

Any Bit or Combination of Bits DC - 3.0 GHz dB ± (.25 + 3% of attenuation) or ± .55 dB

Full Range DC - 3.0 GHz Ratio — — 1.6:1

DC - 2.0 GHz
DC - 3.0 GHz

dB
dB
dB

—
—
—

1.3

1.7

1.9

1.6

2.1

2.4

Trise, Tfall

Ton, Toff

Transients

1 dB Compression Input Power

Input IP

3

Input IP

2

Vcc

-VEE
Vctl

Vctl

Input Leakage
Current (Low)
Input Leakage
Current (High)

Icc Vcc = 4.5 to 5.5V

-Iee Vee = -5.0 to –8.0V — mA — — -1

Two-tone inputs up to +5 dBm 0.05 GHz

Two-tone inputs up to +5 dBm 0.05 GHz

Vctl = 0 to 0.8V,

or Vcc -2.1V to Vcc

10% to 90%

50% Cntl to 90%/10% RF

In-Band

Input Power

— —

Logic (0) TTL
Logic (1) TTL

0 to 0.8 V

2.0 to 5.0 V

0.05 GHz

0.5 - 3.0 GHz

0.5 - 3.0 GHz

0.5 - 3.0 GHz

—
—

—
—

—
— mA — — 4.0

nS
nS

mV

dBm
dBm

dBm
dBm

dBm
dBm

V
V

V
V

µA
µA

—
—
—

—
—

—
—

—
—

4.5

-8.0

0.0

2.0
—

—

10
30
35

+20
+28

+40
+50

+45
+68

5.0

-5.0
—

—
—

—

50

150

—
—

—
—

—
—

—

5.5

-4.75

0.8

5.0
20

20

Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 3.0 GHz

Deviation from Nom. Attenuation

AT65-0413

V 5.00

Pin Configuration

Pin # Function Pin # Function

1 GND 9 C2
2 RF1 10 C1
3 GND 11 GND
4 N/C 12 GND
5 Vee 13 N/C
6 Vcc 14 GND
7 C4 15 RF2
8 C3 16 GND

N/C = No Connection

Recommended PCB Configuration

Absolute Maximum Ratings

1

Parameter Absolute Maximum

Max. Input Power

0.05 GHz

0.5 - 3.0 GHz
+Vcc +5.5V

-Vee -8.5V

Control Voltage -0.5 to Vcc + 0.5V

Operating Temperature -40°C to +85°C

Storage Temperature -65°C to +125°C

1. Operation of this device above any one of these

parameters may cause permanent damage.

+27 dBm
+34 dBm

Truth Table

C1 C2 C3 C4 Attenuation

0 0 0 0 Loss, Reference
1 0 0 0 1.0 dB
0 1 0 0 2.0 dB
0 0 1 0 4.0 dB
0 0 0 1 8.0 dB
1 1 1 1 15.0 dB

Typical Performance Curves

Typical Insertion Loss (dB) Attenuation Accuracy @+25°C

+25°C -40°C +85°C

2.5

2

1.5

1

Loss (dB)

0.5

0

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Frequency (GHz)

0 = TTL Low; 1 = TTL High

15dB 1dB8dB 2dB 4dB

0.4

0.2

0

(dB)

-0.2

-0.4

0.0 0.5 1.0 1.5 2.0 2.5 3.0

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

Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 3.0 GHz

Deviation from Nom. Attenuation

Typical Performance Curves

Attenuation Accuracy @ +85°C Attenuation Accuracy @ -40°C

15dB1dB 8dB2dB4dB

0.4

0.4

2dB

1dB 8dB

4dB

AT65-0413

V 5.00

15dB

0.2

0

-0.2

-0.4

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Deviation from Nom. Attenuation (dB)

Frequency (GHz)

RF1 VSWR vs. Frequency

2 & 4 dB Insertion Loss 1 dB 8 dB15 dB

1.3

1.2

VSWR

1.1

1

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Frequency (GHz)

0.2

0

(dB)

-0.2

-0.4

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Frequency (GHz)

RF2 VSWR vs. Frequency

15 dB Insertion Loss 1 dB 2, 4 & 8 dB

1.5

1.4

1.3

VSWR

1.2

1.1

1

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Frequency (GHz)

Ordering Information

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.

Part Number Package

AT65-0413 SOIC-16 Lead Plastic

AT65-0413TR Tape and Reel (1K Reel)

AT65-0413-TB Unit mounted on a test board

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