Digital Attenuator, 15 dB, 4-Bit, TTL
Driver, DC - 4.0 GHz
AT90
-0413

CSP-1
V 3.00
Features
n Attenuation: 1 dB Steps to 15 dB
n Low DC Power Consumption
n Small Footprint, JEDEC Package
n Integral TTL Driver
n 50 Ohm Impedance
n Test Boards Available
n Tape and Reel Packaging Available

Description
M/A-COM’s AT90-0413 is a GaAs FET 4-Bit digital
attenuator with integral driver. Step size is 1 dB providing
a 15 dB attenuation range. This device is in an FQFP-N
plastic surface mount package. The AT90-0413 is suited
for applications where accuracy, fast speed, low power
consumption and low costs are required.
Electrical Specifications: TA = 25°C
Parameter Test Conditions Frequency Units Min. Typ. Max.
Insertion Loss — DC-2.5 GHz
DC-4.0 GHz
dB
dB
—
—
2.0
2.5
2.5
3.0
Attenuation
Accuracy
Individual Bits or
Combination of Bits
DC-2.5 GHz
DC-4.0 GHz
dB
dB
—
—
—
—
±(0.3+4% of atten setting)
±(0.3+6% of atten setting)
VSWR Full Attenuation Range DC-2.5 GHz
DC-4.0 GHz
Ratio
Ratio
—
—
1.5:1
1.8:1
1.8:1
2.0:1
Switching Speed 50% Cntl to 90%/10% RF
10% to 90% or 90% to 10%
—
—
nS
nS
—
—
75
20
150
50
1 dB Compression — 50 MHz
0.5-4.0 GHz
dB
dB
—
—
+21
+29
—
—
Input IP3 Two-tone Inputs up to +5 dBm 50 MHz
0.5-4.0 GHz
dB
dB
—
—
+35
+48
—
—
+Vcc — — V 4.75 5.0 5.25
-Vee — — V -8.0 -5.0 -4.75
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