AA109-310 Datasheet, PDF (1/3 Pages) Alpha Industries – GaAs IC 5 Bit Digital Attenuator With Serial-to-Parallel Driver 0.5-2.5 GHz

GaAs IC 5 Bit Digital Attenuator With
Serial-to-Parallel Driver 0.5–2.5 GHz
Preliminary
AA109-310
Features
I Positive Voltage Operation (+5 V)
I MLF 5 x 5 mm Leadless Package
I Integrated Silicon Serial-to-Parallel Driver
I Attenuation 1 dB Steps to 31 dB
Description
The AA109-310 is a GaAs FET IC 5 bit digital attenuator
with a serial-to-parallel driver packaged in a 32 leadless
exposed pad plastic package. It is particularly suited where
high attenuation accuracy, low insertion loss and low
intermodulation products are required.Typical applications
include base station, wireless and wireless local loop gain
control circuits.
MLF 5 x 5 (-310)
0.197 (5.00 mm) BSC
0.039 (1.00 mm) MAX.
PIN 1
INDICATOR
32
0.187
(4.75 mm) BSC
0.001
(0.025 mm)
1
0.187
(4.75 mm)
BSC
0.197
(5.00 mm)
BSC
SEATING
PLANE
0.122 (3.10 mm)
± 0.006 (0.15 mm)
12˚ MAX.
0.122 (3.10 mm)
± 0.006 (0.15 mm)
32
1
0.138
(3.50 mm) REF.
0.019 (0.50 mm) BSC
Electrical Specifications at 25°C (V_CC = +5 V)
Parameter¹
Condition
Insertion Loss²
Attenuation Range^{3, 4}
Attenuation Accuracy^{3, 4}
0.138 (3.50 mm) REF.
Frequency
0.5–1.0 GHz
1.0–2.0 GHz
2.0–2.5 GHz
0.5–1.0 GHz
1.0–2.0 GHz
2.0–2.5 GHz
Min.
Typ. Max. Unit
2.0
2.4
dB
2.7
3.1
dB
3.1
3.6
dB
15.5
dB
± (0.2 + 3% of
Attenuation Setting in dB)
dB
± (0.3 + 5% of
Attenuation Setting in dB)
dB
± (0.3 + 6% of
Attenuation Setting in dB)
dB
VSWR (I/O)
Switching Characteristics⁵
Input Power for 1 dB Compression
Intermodulation Intercept Point (IP3)
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
V_S = +3 V
V_S = +5 V
For Two-tone Input Power +5 dBm
V_S = +3 V
V_S = +5 V
0.5–2.5 GHz
0.9–2.5 GHz
0.9–2.5 GHz
0.9–2.5 GHz
0.9–2.5 GHz
1.5:1
100
300
70
+21
+27
2.2:1
µs
µs
mV
dBm
dBm
+41
dBm
+45
dBm
DC Electrical Characteristics at 25°C (0, +5 V)
Parameter
Input Voltage High
Input Voltage Low
Input Leakage Current
Quiescent Current
Supply Voltages
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/°C.
3. Attenuation value referenced above insertion loss.
Symbol
Min.
Typ. Max. Unit
V_IH (1)
3.5
5.0
V
V_IL (0)
0
0.5
V
I_L
±0.5
µA
I_CC
500
µA
V_CC
5.0
V
4. Exposed pad must be connected to RF ground to obtain specified attenuation.
5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com
1
Specifications subject to change without notice. 3/01A