Digital Attenuator, 15 dB, 4-Bit,
TTL Driver, DC - 3.0 GHz
AT65
-
0413
SO-16
V 5.00
Electrical Specifications: T
A
= 25C
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 -55C to +85C
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.
Parameter
Test Conditions
Frequency
Units
Min.
Typ.
Max.
Insertion Loss
--
DC - 0.5 GHz
DC - 2.0 GHz
DC - 3.0 GHz
dB
dB
dB
--
--
--
1.3
1.7
1.9
1.6
2.1
2.4
Attenuation Accuracy Any Bit or Combination of Bits DC - 3.0 GHz
dB
(.25 + 3% of attenuation) or .55 dB
VSWR
Full Range
DC - 3.0 GHz
Ratio
--
--
1.6:1
Trise, Tfall
Ton, Toff
Transients
10% to 90%
50% Cntl to 90%/10% RF
In-Band
nS
nS
mV
--
--
--
10
30
35
50
150
--
1 dB Compression
Input Power
Input Power
0.05 GHz
0.5 - 3.0 GHz
dBm
dBm
--
--
+20
+28
--
--
Input IP
3
Two-tone inputs up to +5 dBm
0.05 GHz
0.5 - 3.0 GHz
dBm
dBm
--
--
+40
+50
--
--
Input IP
2
Two-tone inputs up to +5 dBm
0.05 GHz
0.5 - 3.0 GHz
dBm
dBm
--
--
+45
+68
--
--
Vcc
-V
EE
--
--
--
V
V
4.5
-8.0
5.0
-5.0
5.5
-4.75
Vctl
Vctl
Logic (0) TTL
Logic (1) TTL
--
--
V
V
0.0
2.0
--
--
0.8
5.0
-Iee
Vee = -5.0 to 8.0V
--
mA
--
--
-1
Input Leakage
Current (Low)
Input Leakage
Current (High)
0 to 0.8 V
2.0 to 5.0 V
--
--
A
A
--
--
--
--
20
20
Icc
Vcc = 4.5 to 5.5V
Vctl = 0 to 0.8V,
or Vcc -2.1V to Vcc
--
mA
--
--
4.0
Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 3.0 GHz
AT65-0413
Specifications subject to change without notice.
n
North America: Tel. (800) 366-2266
n
Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
V 5.00
2
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
Absolute Maximum Ratings
1
Parameter
Absolute Maximum
Max. Input Power
0.05 GHz
0.5 - 3.0 GHz
+27 dBm
+34 dBm
+Vcc
+5.5V
-Vee
-8.5V
Control Voltage
-0.5 to Vcc + 0.5V
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +125C
1. Operation of this device above any one of these
parameters may cause permanent damage.
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
0 = TTL Low; 1 = TTL High
Recommended PCB Configuration
Typical Performance Curves
Typical Insertion Loss (dB)
Attenuation Accuracy @+25C
0
0.5
1
1.5
2
2.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
Loss (dB)
+25C
-40C
+85C
N/C = No Connection
-0.4
-0.2
0
0.2
0.4
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
Deviation from Nom. Attenuation
(dB)
15dB
1dB
8dB
2dB
4dB
Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 3.0 GHz
AT65-0413
Specifications subject to change without notice.
n
North America: Tel. (800) 366-2266
n
Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
V 5.00
Typical Performance Curves
Attenuation Accuracy @ +85C
Attenuation Accuracy @ -40C
RF1 VSWR vs. Frequency
3
RF2 VSWR vs. Frequency
Ordering 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
1
1.1
1.2
1.3
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
VSWR
2 & 4 dB
Insertion Loss
1 dB
8 dB
15 dB
1
1.1
1.2
1.3
1.4
1.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
VSWR
15 dB
Insertion Loss
1 dB
2, 4 & 8 dB
-0.4
-0.2
0
0.2
0.4
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
Deviation from Nom. Attenuation (dB)
15dB
1dB
8dB
2dB
4dB
-0.4
-0.2
0
0.2
0.4
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
Deviation from Nom. Attenuation
(dB)
15dB
1dB
8dB
2dB
4dB
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