Digital Attenuator, 31 dB, 5-Bit, TTL Driver
DC - 2.0 GHz AT15-0001
M/A-COM, Inc.
North America: Tel. (800) 366-2266 n Asia/Pacific: Tel. +81 (03) 3226-1671 n Europe: Tel. +44 (1344) 869 595
Fax (800) 618-8883 Fax +81 (03) 3226-1451 Fax +44 (1344) 300 020
1
Specifications Subject to Change Without Notice.
V4.00
Features
Attenuation: 1-dB Steps to 31 dB
Low DC Power Consumption
Integral TTL Driver
50Ω Nominal Impedance
Description
M/A-COM’s 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.
Parameter Test Conditions Units Minimum Typical Maximum
Reference Insertion Loss DC - 0.5 GHz dB 6.0
DC - 1.0 GHz dB 6.5
DC - 2.0 GHz dB 7.3
Attenuation Accuracy
2,3
Any Single Bit DC - 1.0 GHz ± (0.2 dB + 2% of attenuation setting in dB) dB
DC - 2.0 GHz ± (0.25 dB + 2% of attenuation setting in dB) dB
Any Combination of Bits DC - 1.0 GHz ± (0.2 dB + 2% of attenuation setting in dB) dB
DC - 2.0 GHz ± (0.3 dB + 2% of attenuation setting in dB) dB
VSWR DC - 0.5 GHz 1.3:1
DC - 1.0 GHz 1.4:1
DC - 2.0 GHz 1.7:1
Trise, Tfall 10% RF to 90% RF nS 5
Ton, Toff 50% Control to 90%/10% RF nS 30
Transients In-band mV 220
1 dB Compression Input Power 0.05 GHz dBm +20
Input Power 0.5 - 2.0 GHz dBm +27
Input IP
3
For two-tone input power 0.05 GHz dBm +40
up to +5 dBm 0.5 - 2.0 GHz dBm +40
Input IP
2
For two-tone input power 0.05 GHz dBm +60
up to +5 dBm 0.5 - 2.0 GHz dBm +75
V
CC
V 4.5 5.0 5.5
V
EE
V -16.5 -10.8
I
CC
V
CC
= 4.5 to 5.5 V mA 10
Vctl = 0 to 0.8 V, or V
CC
- 2.1 V to V
CC
I
EE
V
EE
= -16.5 to -10.8 V mA 8.0
V
EE
= -12.0 V
mA 5.0
Vctl Logic 0 (TTL) V 0.0 0.8
Logic 1 (TTL)
V 2.0 5.0
Input Leakage Current Low 0 to 0.8 V µA 1.0
High 2.0 to 5.0 V µA 1.0
Typical Electrical Specifications
1
, T
A
=
-
55°C to +85°C
PIN 1
PIN 13
0.600
(15.2)
0.14
(3.6 – 0.5)
0.10
(2.5 – 0.5)
0.80
(20.3 – 0.5)
0.100 TYP
(2.4)
0.018 – 0.005
(0.46 – 0.13)
DIA 24 PINS
0.120 MIN
(3.0)
0.200 MAX
(5.1)
RF1 RF2
+V C R 16 1 2 4 8
1.37
(34.8 – 0.5)
DI-3
Dimensions in ( ) are in mm. Unless otherwise noted:
.xxx = ±0.010 (.xx = ±0.25)
l
l
l
l
1. All specifications apply when operated with bias voltages of +5 V for V
CC
and -16.5 V to -10.8 V for V
EE
, and 50Ω impedance at all ports unless otherwise specified.
2. Above reference insertion loss.
3. This attenuator is guaranteed monotonic.
4. Replaces AT-104.
1 2 3 4 5 6 7 8 9 10-12 13 14-23 24
+5 V GND -12 V GND C16 C1 C2 C4 C8 GND RF2 GND RF1
Pin Configuration