ALPHA AT001D6-25

GaAs IC 4 Bit Digital Attenuator
3 dB LSB DC–1 GHz
AT001D6-25
Features
SOIC-16
■ Attenuation in 3 dB Steps to 45 dB
0.050
(1.27 mm) BSC
PIN 16
■ Low DC Power Consumption
■ Low Cost SOIC-16 Plastic Package
0.244 (6.20 mm)
0.228 (5.80 mm)
PIN 1
INDICATOR
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.
PIN 1
0.020 (0.51 mm)
0.013 (0.33 mm)
0.068
(1.73 mm) MAX.
0.049 (1.24 mm)
0.016 (0.41 mm)
0.016 MAX.
(0.41 mm)
x 45˚
CHAMFER
8˚ MAX.
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)
0.158 (4.00 mm)
0.150 (3.80 mm)
Electrical Specifications at 25°C (0, -5 V)
Parameter1
Frequency2
Typ.
Max.
Unit
DC–0.5 GHz
DC–1.0 GHz
2.5
3.5
3.2
4.0
dB
dB
Attenuation Range4
DC–1.0 GHz
10% or ± 0.5 dB
Whichever is Greater
12% for 45 dB Attenuation
VSWR (I/O)
DC–0.5 GHz
DC–1.0 GHz
1.4:1
1.6:1
1.6:1
1.8:1
Typ.
Max.
Insertion
Loss3
Min.
Operating Characteristics at 25°C (0, -5 V)
Parameter
Switching Characteristics5
Condition
Frequency
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
Input Power for 1 dB Compression
Min.
Unit
10
20
20
ns
ns
mV
0.50–1.0 GHz
0.05 GHz
+24
+14
dBm
dBm
0.50–1.0 GHz
0.05 GHz
+43
+32
dBm
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +13 dBm
Control Voltages
VLow = 0 to -0.2 V @ 20 µA Max.
VHigh = -5 V @ 50 µA to -8 V at 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.
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
1
GaAs IC 4 Bit Digital Attenuator 3 dB LSB DC–1 GHz
AT001D6-25
Typical Performance Data (0, -5 V)
5
15
4
12
+85˚C
dB
9
dB
3
-40˚C
2
6
1
3
0
0
DC
0.5
1.0
DC
0.5
1.0
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
3, 6, 12 dB States
2.5
40
2.2
35
1.9
30
1.6
25
1.3
dB
45
20
1.0
DC
0.5
1.0
DC
0.5
1.0
Frequency (GHz)
Frequency (GHz)
24, 36, 45 dB States
VSWR vs. Frequency (All States)
Absolute Maximum Ratings
Pin Out
Characteristic
Value
RF Input Power
GND GND J1 GND GND J2
2 W > 500 MHz 0/-8 V
0.5 W @ 50 MHz 0/-8 V
Control Voltage
16
15
14
13
12
11
GND GND
10
9
+0.2 V, -8 V
Operating Temperature
-40°C to +85°C
Storage Temperature
-65°C to +150°C
ΘJC
24 dB
6 dB
3 dB
12 dB
25°C/W
Note: Exceeding these parameters may cause irreversible damage.
1
2
3
4
5
6
7
8
V8
V7
V6
V5
V4
V3
V2
V1
Truth Table
V1
V2
V3
12 dB
2
V4
V5
3 dB
V6
V7
6 dB
V8
24 dB
Attenuation
J1–J2
-5
0
-5
0
0
-5
0
-5
-5
0
0
-5
0
-5
0
-5
Reference I.L.
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
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