Digital Attenuator, 30 dB, 4-Bit,
TTL Driver, DC - 2.5 GHz
AT90-0233
CSP-1
V 1.00
Features
nAttenuation: 2 dB Steps to 30 dB
nLow DC Power Consumption
nSmall Footprint, JEDEC Package
nIntegral TTL Driver
n50 Ohm Impedance
nTest Boards Available
nTape and Reel Packaging Available
Description
M/A-COM’s AT90-0233 is a GaAs FET 4-Bit digital
attenuator with integral driver. Step size is 2 dB providing
a 30 dB attenuation range. This device is in an FQFP-N
plastic surface mount package. The AT90-0233 is suited
for use where accuracy, fast speed, very low power
consumption and low costs are required.
Electrical Specifications TA = +25°C
Parameter Test Conditions Frequency Units Min Typical Max
Insertion Loss — DC - 2.5 GHz dB — 2.7 3.0
Attenuation
Accuracy Individual Bits or Combination
of Bits DC - 2.5 GHz dB — — ±(.3 +5% of atten setting)
VSWR Full Range DC - 2.5 GHz Ratio — 1.5:1 1.8:1
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 - 2.5 GHz dBm
dBm —
— +21
+29 —
—
Input IP3 Two-tone inputs up to +5 dBm 50 MHz
0.5 - 2.5 GHz dB
dB —
— +35
+48 —
—
+Vcc
-Vee —
— —
— V
V 4.75
-8.0 5.0
-5.0 5.25
-4.75
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 — 0.2 6
-Iee -Vee min to max,
Logic “0” or “1” — mA — -0.2 -1