Digital Attenuator, 31 dB, 5-Bit, TTL Driver
DC - 2.0 GHz
AT15-0001
V4.00
Features
q
q
q
q
DI-3
RF1
1.37
(34.8
鹵0.5)
Attenuation: 1-dB Steps to 31 dB
Low DC Power Consumption
Integral TTL Driver
50鈩?Nominal Impedance
0.018
鹵0.005
(0.46
鹵0.13)
DIA 24 PINS
RF2
+V
C R 16 1 2 4 8
0.200 MAX
(5.1)
0.120 MIN
(3.0)
0.100 TYP
(2.4)
Description
M/A-COM鈥檚 AT15-0001 is a GaAs FET 5-bit digital
attenuator with a 1-dB minimum step size and 31 dB
total attenuation. This attenuator and integral TTL driver
is in a 24-pin dual inline package. The AT15-0001 is
ideally suited for use where accuracy, fast switching,
very low power consumption and low intermodulation
products are required. Typical applications include
dynamic range setting in precision receiver circuits and
other gain/leveling control circuits.
Environmental screening is available. Contact the factory
for information.
1
PIN 1
0.600
(15.2)
0.80
(20.3
鹵0.5)
PIN 13
0.10
(2.5
鹵0.5)
0.14
(3.6
鹵0.5)
Pin Con鏗乬uration
1
2
3
4
5
+5 V GND -12 V GND C16
6
C1
7
C2
8
C4
9 10-12 13 14-23 24
C8 GND RF2 GND RF1
Dimensions in ( ) are in mm. Unless otherwise noted:
.xxx = 鹵0.010 (.xx = 鹵0.25)
Typical Electrical Speci鏗乧ations ,
T
A
= - 55擄C to +85擄C
Parameter
Reference Insertion Loss
Test Conditions
DC - 0.5 GHz
DC - 1.0 GHz
DC - 2.0 GHz
DC - 1.0 GHz
DC - 2.0 GHz
DC - 1.0 GHz
DC - 2.0 GHz
DC - 0.5 GHz
DC - 1.0 GHz
DC - 2.0 GHz
Units
Minimum
Typical
Maximum
dB
6.0
dB
6.5
dB
7.3
鹵 (0.2 dB + 2% of attenuation setting in dB) dB
鹵 (0.25 dB + 2% of attenuation setting in dB) dB
鹵 (0.2 dB + 2% of attenuation setting in dB) dB
鹵 (0.3 dB + 2% of attenuation setting in dB) dB
1.3:1
1.4:1
1.7:1
nS
5
nS
30
mV
220
dBm
+20
dBm
+27
dBm
+40
dBm
+40
dBm
+60
dBm
+75
V
4.5
5.0
5.5
V
-16.5
-10.8
mA
10
mA
mA
V
V
碌A(chǔ)
碌A(chǔ)
8.0
5.0
0.8
5.0
1.0
1.0
Attenuation Accuracy
2,3
Any Single Bit
Any Combination of Bits
VSWR
Trise, Tfall
Ton, Toff
Transients
1 dB Compression
Input IP
3
Input IP
2
V
CC
V
EE
I
CC
I
EE
Vctl
Input Leakage Current
1.
2.
3.
4.
10% RF to 90% RF
50% Control to 90%/10% RF
In-band
Input Power
Input Power
For two-tone input power
up to +5 dBm
For two-tone input power
up to +5 dBm
0.05 GHz
0.5 - 2.0 GHz
0.05 GHz
0.5 - 2.0 GHz
0.05 GHz
0.5 - 2.0 GHz
V
CC
= 4.5 to 5.5 V
Vctl = 0 to 0.8 V, or V
CC
- 2.1 V to V
CC
V
EE
= -16.5 to -10.8 V
V
EE
= -12.0 V
Logic 0 (TTL)
Logic 1 (TTL)
Low
High
0 to 0.8 V
2.0 to 5.0 V
0.0
2.0
All speci鏗乧ations apply when operated with bias voltages of +5 V for V
CC
and -16.5 V to -10.8 V for V
EE
, and 50鈩?impedance at all ports unless otherwise speci鏗乪d.
Above reference insertion loss.
This attenuator is guaranteed monotonic.
Replaces AT-104.
Speci鏗乧ations Subject to Change Without Notice.
M/A-COM, Inc.
North America:
Tel. (800) 366-2266
Fax (800) 618-8883
s
1
Asia/Paci鏗乧: Tel. +81 (03) 3226-1671
Fax +81 (03) 3226-1451
s
Europe: Tel. +44 (1344) 869 595
Fax +44 (1344) 300 020
1
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