Digital Attenuator, 50 dB, 6-Bit,
TTL Driver, DC-2.4 GHz
AT90
-1106

CSP-1
V 5.00
Electrical Specifications TA = +25°C
Parameter Test Conditions Frequency Units Min Typical Max
Insertion Loss — DC - 2.4 GHz dB — 5.5 6.0
Attenuation
Accuracy
Individual Bits 1-2-4-8-16-32 dB
Any Combination of Bits
1 to 50 dB
DC - 2.4 GHz
DC - 2.4 GHz
dB
dB
—
—
—
—
±(.3 +5% of atten setting)
±(.5 +8% of atten setting)
VSWR Full Range DC - 2.4 GHz Ratio — 1.8:1 2:1
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 - 2.40 GHz
dBm
dBm
—
—
+21
+29
—
—
Input IP3 Two-tone inputs up to +5 dBm 50 MHz
0.5-2.4 GHz
dB
dB
—
—
+35
+48
—
—
+Vcc — — V 4.75 5.0 5.25
Logic “0” Sink Current is 20 µA max. — V 0.0 — 0.8
Logic “1” Source Current is 20 µA max. — V 2.0 — 5.0
Icc Vcc min to max,
Logic “0” or “1”
— mA — 6 10
Features
n Attenuation: 1 dB Steps to 50 dB
n Single Positive Supply
n Contains Internal DC to DC Converter
n Low DC Power Consumption
n Small Footprint, JEDEC Package
n Integral TTL Driver
n 50 ohm Impedance

Description
M/A-COM's AT90-1106 is a GaAs FET 6-bit digital
attenuator with integral TTL driver. Step size is 1 dB pro-
viding a 50 dB total attenuation range. This device is in a
FQFP-N plastic surface mount package. The AT90-1106 is
ideally suited for use where accuracy, fast speed, very low
power consumption and low costs are required.