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Part Number AA100-59

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Alpha Industries, Inc. [781] 935-5150
·
Fax [617] 824-4579
·
Email sales@alphaind.com
·
www.alphaind.com
1
Specifications subject to change without notice. 3/99A
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
Switching Characteristics
4
Rise, Fall (10/90% or 90/10% RF)
0.7
µs
On, Off (50% CTL to 90/10% RF)
1.0
µs
Video Feedthru
50
mV
Input Power for 1 dB Compression
V
S
= +3 V
0.75­2.0 GHz
+20
dBm
V
S
= +5 V
0.75­2.0 GHz
+26
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +10 dBm
V
S
= +3 V
0.75­2.0 GHz
+32
dBm
V
S
= +5 V
0.75­2.0 GHz
+45
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.
V
S
= V
High
± 0.2 V
GaAs IC 3 Bit Digital Attenuator
4 dB LSB Positive Control 0.75­2 GHz
Features
s
Attenuation in 4 dB Steps to 28 dB
with High Accuracy
s
Single Positive Control Voltage
for Each Bit
s
+3 V to +5 V Operation
s
Small Low Cost MSOP-8 Plastic Package
MSOP-8
AA100-59
0.012 (0.30 mm)
PIN 1
PIN 1
INDICATOR
+ 0.006 (0.15 mm)
7.0°
TYP.
0.038 (0.95 mm)
0.030 (0.75 mm)
0.017
(0.43 mm)
8.0°
MAX.
0.028 (0.70 mm)
0.016 (0.40 mm)
0.007 (0.18 mm)
± 0.005 (0.12 mm)
0.006 (0.15 mm)
0.002 (0.05 mm)
- 0.002 (0.05 mm)
0.0256 (0.65 mm) TYP.
0.118 (3.00 mm)
± 0.004 (0.1 mm)
SQ.
0.193 (4.90 mm)
REF.
Description
The AA100-59 is a 3 bit, single positive control, 4 dB step
GaAs IC FET digital attenuator in a low cost MSOP-8
plastic package. For positive operation external DC
blocking capacitors are required on all RF ports. The
AA100-59 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.
Operating Characteristics at 25°C (0, +3 V)
Parameter
1
Frequency
Min.
Typ.
Max.
Unit
Insertion Loss
2
0.75­2.0 GHz
1.8
2.1
dB
Attenuation Range
0.75­2.0 GHz
28
dB
Attenuation Accuracy
3
0.75­1.0 GHz
± (0.2 + 3% of
dB
Attenuation Setting in dB)
0.75­2.0 GHz
± (0.3 + 3% of
dB
Attenuation Setting in dB)
VSWR (I/O)
0.75­2.0 GHz
1.5:1
2.0:1
Electrical Specifications at 25°C (0, +3 V)
1. All measurements made in a 50
system, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/°C.
3. Attenuation referenced to insertion loss.
4. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
Preliminary
GaAs IC 3 Bit Digital Attenuator 4 dB LSB Positive Control 0.75­2 GHz
AA100-59
2
Alpha Industries, Inc. [781] 935-5150
·
Fax [617] 824-4579
·
Email sales@alphaind.com
·
www.alphaind.com
Specifications subject to change without notice. 3/99A
0
1
2
3
4
5
6
0.5
1.0
1.5
2.0
2.5
Frequency (GHz)
Insertion Loss vs. Frequency
d
B
Frequency (GHz)
Attenuation vs. Frequency (All States)
0
5
0.5
1.0
1.5
2.0
2.5
10
15
20
25
30
d
B
0
0.5
0.5
1.0
1.0
1.5
1.5
2.0
2.0
Frequency (GHz)
VSWR vs. Frequency (All States)
Typical Performance Data (0, +3 V)
8
7
6
5
J
1
V
2
V
1
GND
C
BL
V
S
10 k
V
3
C
BL
J
2
GND
GND
8
dB
4
dB
16
dB
1
2
3
4
Characteristic
Value
RF Input Power
1 W > 500 MHz 0/8 V
0.5 W @ 50 MHz 0/8 V
Supply Voltage
+8 V
Control Voltage
-0.2 V, +8 V
Operating Temperature
-40°C to +85°C
Storage Temperature
-65°C to +150°C
Absolute Maximum Ratings
Pin Out
V
High
= +3 to +5 V (V
S
= V
High
± 0.2 V).
V
1
V
2
V
3
Attenuation
16 dB
4 dB
8 dB
J
1
­J
2
V
High
V
High
V
High
Ins. Loss
V
High
0
V
High
4 dB
V
High
V
High
0
8 dB
V
High
0
0
12 dB
0
V
High
V
High
16 dB
0
0
V
High
20 dB
0
V
High
0
24 dB
0
0
0
28 dB
Truth Table
DC blocking capacitors (C
BL
) and biasing resistor must be supplied externally
for positive operation.
C
BL
= 100 pF for operation >.75 GHz.
Note: Exceeding these parameters may cause irreversible damage.