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
5
Rise, Fall (10/90% or 90/10% RF)
10
ns
On, Off (50% CTL to 90/10% RF)
20
ns
Video Feedthru
20
mV
Input Power for 1 dB Compression
0.501.0 GHz
+24
dBm
0.05 GHz
+14
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +13 dBm
0.501.0 GHz
+43
dBm
0.05 GHz
+32
dBm
Control Voltages
V
Low
= 0 to -0.2 V @ 20 A Max.
V
High
= -5 V @ 50 A to -8 V at 200 A Max.
GaAs IC 4 Bit Digital Attenuator
3 dB LSB DC1 GHz
Features
s
Attenuation in 3 dB Steps to 45 dB
s
Low DC Power Consumption
s
Low Cost SOIC-16 Plastic Package
SOIC-16
AT001D6-25
0.158 (4.00 mm)
0.150 (3.80 mm)
0.068
(1.73 mm) MAX.
0.244 (6.20 mm)
0.228 (5.80 mm)
0.049 (1.24 mm)
0.016 (0.41 mm)
0.016 MAX.
(0.41 mm)
x 45
CHAMFER
0.020 (0.51 mm)
0.013 (0.33 mm)
0.050
(1.27 mm) BSC
PIN 16
PIN 1
PIN 1
INDICATOR
0.394 (10.00 mm)
0.386 (9.80 mm)
0.010 (0.25 mm)
0.004 (0.10 mm)
0.0098 (0.25 mm)
0.0075 (0.19 mm)
8 MAX.
Description
The AT001D6-25 is an IC FET digital attenuator consisting
of four monolithic attenuators with LSB of 3 dB and a total
attenuation of 45 dB with all attenuators connected.
The attenuator is packaged in the plastic 16 lead surface
mount package for low cost commercial cellular radio
applications.
Parameter
1
Frequency
2
Min.
Typ.
Max.
Unit
Insertion Loss
3
DC0.5 GHz
2.5
3.2
dB
DC1.0 GHz
3.5
4.0
dB
Attenuation Range
4
DC1.0 GHz
10% or 0.5 dB
Whichever is Greater
12% for 45 dB Attenuation
VSWR (I/O)
DC0.5 GHz
1.4:1
1.6:1
DC1.0 GHz
1.6:1
1.8:1
Electrical Specifications at 25C (0, -5 V)
Operating Characteristics at 25C (0, -5 V)
1. All measurements made in a 50
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.
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
GaAs IC 4 Bit Digital Attenuator 3 dB LSB DC1 GHz
AT001D6-25
V
1
V
2
V
3
V
4
V
5
V
6
V
7
V
8
Attenuation
12 dB
3 dB
6 dB
24 dB
J
1
J
2
-5
0
-5
0
0
-5
0
-5
Reference I.L.
-5
0
0
-5
0
-5
0
-5
3 dB
-5
0
-5
0
-5
0
0
-5
6 dB
0
-5
-5
0
0
-5
0
-5
12 dB
-5
0
-5
0
0
-5
-5
0
24 dB
0
-5
0
-5
-5
0
-5
0
45 dB
5
4
3
2
1
DC
0.5
1.0
Frequency (GHz)
Insertion Loss vs. Frequency
d
B
0
+85C
-40C
Frequency (GHz)
d
B
45
40
35
30
25
20
DC
0.5
1.0
24, 36, 45 dB States
Frequency (GHz)
d
B
15
DC
0.5
1.0
12
9
6
3
0
3, 6, 12 dB States
Typical Performance Data (0, -5 V)
J
1
J
2
GND GND
GND GND
GND GND
V
1
V
2
V
3
V
4
V
5
V
6
V
7
V
8
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
24 dB
6 dB
3 dB
12 dB
Characteristic
Value
RF Input Power
2 W > 500 MHz 0/-8 V
0.5 W @ 50 MHz 0/-8 V
Control Voltage
+0.2 V, -8 V
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +150C
JC
25C/W
Absolute Maximum Ratings
Pin Out
Frequency (GHz)
VSWR vs. Frequency (All States)
2.5
2.2
1.9
1.6
1.3
1.0
1.0
0.5
DC
Truth Table
Note: Exceeding these parameters may cause irreversible damage.
PDF 
ZIP