AT90-1283 Datasheet, PDF (1/5 Pages) Tyco Electronics – Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz

Digital Attenuator, 15.5 dB, 5-Bit,
TTL Driver, DC-3.5 GHz
V 4.00
Features
n Attenuation: 0.5 dB Steps to 15.5 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 AT90-1283 is a GaAs FET 5-bit digital
attenuator with integral TTL driver. Step size is 0.5 dB
providing a 15.5 dB total attenuation range. This device is
in an FQFP-N plastic surface mount package. The AT90-
1283 is ideally suited for use where accuracy, fast speed,
very low power consumption and low costs are required.
CSP-1
Electrical Specifications T_A = +25°C
Parameter
Test Conditions
Frequency Units Min Typical
Max
Insertion Loss
Attenuation
Accuracy
VSWR
—
DC - 3.5 GHz dB
—
Individual Bits 0.5-1-4-8 dB DC - 3.5 GHz dB
—
Individual Bit 2 dB
DC - 3.5 GHz dB
—
Any Combination of Bits
DC - 3.5 GHz dB
—
1 to 15.5 dB
Full Range
DC - 3.5 GHz Ratio —
Switching Speed
50% Cntl to 90%/10% RF
—
nS
—
10% to 90% or 90% to 10%
—
nS
—
1 dB Compression
—
—
50 MHz
dBm —
0.5 - 3.5 GHz dBm —
Input IP₃
+Vcc
Two-tone inputs up to +5 dBm
50 MHz
dB
—
0.5-3.5 GHz dB
—
—
—
V
4.75
2.8
—
—
—
1.6:1
75
20
+21
+29
+35
+48
5.0
3.2
±(.3 +5% of atten setting)
±(.4 +10% of atten setting)
±(.5 +7% of atten setting)
1.8:1
150
50
—
—
—
—
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
—
mA
—
6
10
“1”