AT-267 Datasheet, PDF (2/3 Pages) Tyco Electronics – Digital Attenuator, 1 Bit, 15 dB Step DC - 2.0 GHz

AT-267
Digital Attenuator, 1-Bit, 15 dB
DC - 2.0 GHz
Electrical Specifications³: T_A = 25°C, V_C = +2.5 Volts, Z₀ = 50 Ω
Parameter
Insertion Loss
(Reference State)
Attenuation
VSWR
Input IP₃
P_1dB
Control Current
Test Conditions
1.0 GHz
2.0 GHz
1.0 GHz
2.0 GHz
1.0 GHz
2.0 GHz
1.0 GHz
Insertion Loss State
Attenuation State
1.0 GHz
Insertion Loss State
Attenuation State
—
Units
dB
dB
dB
Ratio
Ratio
dBm
dBm
Min
—
—
14.6
14.4
—
—
40
40
dBm
24
dBm
20
µA
—
Trise, Tfall
Ton, Toff
Transients
10% to 90% RF, 90% to 10% RF
50% Control to 90% RF,
50% Control to 10% RF
In-band
nS
—
nS
—
mV
—
3. For positive voltage control, external DC blocking capacitors are required on all RF ports (pins 1, 2 and 3).
Rev. V4
Typ
0.3
0.4
15.1
14.9
1.2:1
1.3:1
50
50
26
23
—
29
50
10
Max
0.4
0.5
15.6
15.4
—
—
—
—
—
—
10
—
—
—
SOT-25
Positive Control Voltage Schematic
5
4
1
2
3
39 pF
39 pF
39 pF
Truth Table ^4,5
Mode
(Control)
V1
V2
Attenuation
Positive ⁴
0 ± 0.2V
+2.5V to +5V
15 dB
+2.5V to +5V
0 ± 0.2V Reference State
Negative ⁵
0 ± 0.2V
-2.5V to -5V
-2.5V to -5V Reference State
0 ± 0.2V
15 dB
4. External DC blocking capacitors are required as noted.
5. If negative control is used, DC blocking capacitors are not
required on RF ports and ground.
2
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