AA104-73 Datasheet, PDF (1/4 Pages) Alpha Industries – GaAs IC 1 Bit Digital Attenuator 32 dB 2.5 GHz

GaAs IC 1 Bit Digital Attenuator
32 dB 2.5 GHz
AA104-73
Features
s 1 Bit Attenuation of 32 dB DC–1 GHz, 27 dB
1–2 GHz, 24 dB 2–2.5 dB
s Combine with AA260-85 or AA101-80 for
63 dB 6 Bit Solution
s Tune with One Capacitor and/or Resistor
to Desired Operating Frequency
and Attenuation
s Ideal for Both IF and RF Applications Includ-
ing Cable, GSM, PCS, EDGE, 3G and ISM
Description
The AA104-73 is a 1 bit, GaAs IC FET digital attenuator in
a low cost SOT-6 package. This attenuator has up to
32 dB total attenuation.The attenuator requires two lines of
voltage control. The AA104-73 is particularly suited where
high attenuation accuracy, low insertion loss and low
SOT-6
0.074
(1.90 mm REF.)
PIN 6
PIN 1
INDICATOR
PIN 1
0.126 (3.20 mm)
0.087 (2.20 mm)
0.071 (1.80 mm)
0.052 (1.30 mm)
0.020 (0.51 mm)
0.014 (0.350 mm)
0.006
(0.15 mm)
0.000
(0.00 mm)
0.057 (1.45 mm)
0.035 (0.90 mm)
0.037 (0.95 mm) REF.
5.0˚ ± 1˚
0.012
(0.30 mm)
TYP.
0.014
(0.26 mm)
0.004
(0.10 mm)
5.0˚ ± 1˚
0.122 (3.10 mm)
0.106 (2.70 mm)
0.022 (0.61 mm)
0.004 (0.10 mm)
intermodulation products are required. Typical application
is as a sixth bit value for the AA260-85 and AA101-80. A total
attenuation of 63 dB in 1 dB steps can be obtained by
combining the two attenuators.
Electrical Specifications at -40 to 85°C (0, +3 V), (0, +5 V)
Insertion Loss
Parameter¹
Attenuation Range
Attenuation Accuracy^{3, 4}
VSWR (Insertion Loss State)⁵
VSWR (Attenuation State)⁵
Frequency²
Min.
Typ.
Max.
Unit
DC–1.0 GHz
1.0–2.0 GHz
2.0–2.5 GHz
0.8
1.0
dB
0.9
1.2
dB
1.0
1.3
dB
DC–1.0 GHz
32
dB
1.0–2.0 GHz
27
dB
2.0–2.5 GHz
24
dB
DC–0.5 GHz
± (0.4 + 10% of Attenuation Setting in dB)
dB
0.85–0.95 GHz
± (0.4 + 5% of Attenuation Setting in dB)
dB
1.7–2.0 GHz
± (0.5 + 6% of Attenuation Setting in dB)
dB
2.0–2.5 GHz
± (0.6 + 7% of Attenuation Setting in dB)
dB
DC–2.5 GHz
1.2:1
1.5:1
DC–2.5 GHz
1.5:1
2.0:1
Parameter
Switching Characteristics⁶
Condition
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
Frequency
Min.
Typ. Max. Unit
50
ns
100
ns
25
mV
Input Power for 1 dB Compression
V_S = +3 V
V_S = +5 V
0.5–2.5 GHz
0.5–2.5 GHz
14
+21
18
+23
dBm
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +10 dBm
V_S = +3 V
V_S = +5 V
0.5–2.5 GHz
0.5–2.5 GHz
36
+41
38
+44
dBm
dBm
Control Voltages
V_Low = 0 to 0.2 V @ 20 µA Max.
V_High = +3 V @ 100 µA Max. to +5 V @ 200 µA Max.
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. Operates to DC when controlled with negative voltage, C_BP not required.
3. Attenuation value set by C_BP.
4. Attenuation referenced to insertion loss.
5. Input/output. In band.
6. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
7. DC = 30 KHz.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com
1
Specifications subject to change without notice. 5/00A