AA230-24 Datasheet, PDF (1/2 Pages) Alpha Industries – GaAs IC 3 Bit Digital Attenuator 4 dB LSB DC-2 GHz

GaAs IC 3 Bit Digital Attenuator
4 dB LSB DC–2 GHz
Features
I Attenuation in 4 dB steps to 28 dB with
High Accuracy
I Low Cost SOIC-14 Plastic Package
I Low DC Power Consumption
Description
The AD230-24 is an IC FET Digital Attenuator consisting
of three monolithic attenuators with LSB of 4 dB and a total
attenuation of 28 dB with all attenuators connected.
Attenuators are switched with -5 and 0 V.
The AD230-24 is particularly suited where high
attenuation accuracy, low insertion loss and low
intermodulation products are required. Typical applications
include cellular radio, wireless data, wireless local loop and
other gain level control circuits.
SOIC-14
0.050 (1.27 mm)
0.016 (0.40 mm)
0.158 (4.01 mm)
0.150 (3.81 mm)
PIN 1
INDICATOR
PIN 1
0.068
(1.73 mm) MAX.
AA230-24
(Previously AD230-24)*
PIN 14
0.050
(1.27 mm) BSC
0.244
(6.20 mm)
0.228
(5.80 mm)
0.020 (0.51 mm)
0.013 (0.33 mm)
0.049 (1.24 mm)
0.016 (0.41 mm)
0.016 MAX.
(0.41 mm)
x 45˚
CHAMFER
8˚ MAX.
0.344 (8.75 mm)
0.337 (8.55 mm)
0.010 (0.25 mm)
0.0098 (0.25 mm)
0.004 (0.10 mm)
0.0075 (0.19 mm)
0.158 (4.00 mm)
0.150 (3.80 mm)
Electrical Specifications at 25°C (0, -5 V)
Insertion Loss³
Parameter¹
Attenuation Range
Attenuation Accuracy⁴
VSWR (I/O)
Frequency²
DC–0.1 GHz
DC–0.5 GHz
DC–1.0 GHz
DC–2.0 GHz
DC–1.0 GHz
DC–2.0 GHz
DC–2.0 GHz
Min.
Typ. Max. Unit
1.1
1.4
dB
1.2
1.5
dB
1.3
1.7
dB
1.9
2.3
dB
28
dB
± (0.2 + 3% of
dB
Attenuation Setting in dB)
± (0.4 + 5% of
dB
Attenuation Setting in dB)
1.3:1 1.5:1
Operating Characteristics at 25°C (0, -5 V)
Parameter
Switching Characteristics⁵
Condition
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
Frequency
Min.
Typ. Max. Unit
15
ns
25
ns
25
mV
Input Power for 1 dB Compression
0.50–2.0 GHz
0.05 GHz
+28
dBm
+22
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +5 dBm
0.50–2.0 GHz
0.05 GHz
+48
dBm
+38
dBm
Control Voltages
V_Low = 0 to -0.2 V @ 20 µA Max.
V_High = -5 V @ 50 µA Typ. to -8 V @ 200 µA Max.
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. DC = 300 kHz.
3. Insertion loss changes by 0.003 dB/°C.
4. Attenuation referenced to insertion loss.
5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
*Due to conflict with another company’s product numbering system, Alpha’s attenuator products starting with the letters “AD” are being changed to “AA”.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com
1
Specifications subject to change without notice. 10/99A