ALPHA AA101-80

GaAs IC 5 Bit Digital Attenuator
1 dB LSB Positive Control 0.5–2.5 GHz
AA101-80
Features
SSOP-16
■ Attenuation 1 dB Steps to 31 dB
with High Accuracy
0.197 (5.00 mm)
0.189 (4.80 mm)
0.025
(0.635 mm) TYP.
■ Single Positive Control (+3 to +5 V) for
Each Bit
PIN 16
0.244 (6.20 mm)
0.228 (5.80 mm)
■ Low DC Power Consumption
PIN 1
■ Small Low Cost SSOP-16 Plastic Package
Description
The AA101-80 is a 5 bit, single positive control GaAs IC
FET digital attenuator in a low cost SSOP-16 package.
This attenuator has an LSB of 1 dB and a total attenuation
of 31 dB. The attenuator requires external DC blocking
capacitors, positive supply voltage (VS) and five individual
bit control voltages (V1–V5). The AA101-80 is particularly
suited where high attenuation accuracy, low insertion loss
and low intermodulation products are required. Typical
applications include base station, wireless data, and
wireless local loop gain level control circuits.
0.158 (4.00 mm)
0.150 (3.80 mm)
0.068
(1.73 mm) MAX.
0.0196 X 45˚
CHAMFER
R 0.008
MIN.
R 0.013/0.008
0.0098
(0.0075 mm)
5˚ -15˚
0.010
(0.25 mm) TYP.
0.010 (0.25 mm)
0.004 (0.10 mm)
8˚ MAX.
Electrical Specifications at -40°C to +85°C (0, +5 V)
Parameter1
Condition
Insertion Loss
Frequency
Min.
0.5–1.0 GHz
1.0–2.0 GHz
2.0–2.5 GHz
Attenuation Range
0.5–1.0 GHz
1.0–2.0 GHz
2.0–2.5 GHz
(I/O)3
Unit
2.4
3.0
3.3
dB
dB
dB
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
Input Power for 1 dB Compression
VS = +3 V
VS = +5 V
0.5–2.5 GHz
0.5–2.5 GHz
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +5 dBm
VS = +3 V
VS = +5 V
0.5–2.5 GHz
0.5–2.5 GHz
dB
± (0.2 + 3% of Attenuation
Setting in dB)
± (0.3 + 5% of Attenuation
Setting in dB)
± (0.3 + 6% of Attenuation
Setting in dB)
0.5–2.5 GHz
Switching Characteristics4
Control Voltages
Max.
2.0
2.6
2.9
31
Attenuation Accuracy2
VSWR
Typ.
1.5:1
dB
dB
dB
2.2:1
100
300
70
ns
ns
mV
+18
+23
+21
+27
dBm
dBm
+37
+39
+43
+45
dBm
dBm
VLow = 0 to 0.2 V @ 20 µA Max.
VHigh = +3 V @ 100 µA Max. to +5 V @ 200 µA Max.
VS = VHigh ± 0.2 V
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. Attenuation referenced to insertion loss.
3. Input/output.
4. 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. 10/00A
1
GaAs IC 5 Bit Digital Attenuator 1 dB LSB Positive Control 0.5–2.5 GHz
AA101-80
Typical Performance Data (0, +5 V)
2.50
-1.00
31 dB
2.25
-40˚C
-1.75
8 dB
4 dB 2 dB
2.00
+85˚C
-2.00
-2.25
+25˚C
1 dB
1.75
Ins. Loss
1.50
-2.50
1.25
-2.75
1.00
-3.00
0
0.5
1.0
1.5
2.0
2.5
3.0
0
58
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
VSWR vs. Frequency (25˚C)
60
2.50
31 dB
-40˚C
2.25
56
16 dB
+85˚C
54
2.00
52
VSWR
IP3 (dBm)
16 dB
-1.50
VSWR
Insertion Loss (dB)
-1.25
50
48
+25˚C
8 dB
2 dB
1 dB
4 dB
1.75
Ins. Loss
1.50
46
44
1.25
42
40
1.00
0
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
0.5
1.0
1.5
2.0
2.5
Attenuation (dB)
Frequency (GHz)
IP3 vs. Attenuation and
Temperature (500 MHz)
VSWR vs. Frequency (85˚C)
Compression Point vs. Attenuation,
Voltage, and Temperature
2.50
31 dB
2.25
1
5
29.3
29.5
29.7
2
5
28.7
28.9
29.0
4
5
34.5
34.3
34.6
8
5
27.4
27.4
27.7
16
5
27.9
27.6
28.2
31
5
27.7
25.2
28.4
16 dB
2.00
VSWR
Input Power @ 1 dB Compression
Attenuation Control
State
Voltage (V) +25°C (dBm) +85°C (dBm) -40°C (dBm)
Ins. Loss
5
29.4
29.2
29.6
8 dB
2 dB
1 dB
Ins. Loss
4 dB
1.75
1.50
1.25
1.00
0
0.5
1.0
1.5
2.0
2.5
Frequency (GHz)
VSWR vs. Frequency (-40˚C)
2
3.0
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 10/00A
3.0
GaAs IC 5 Bit Digital Attenuator 1 dB LSB Positive Control 0.5–2.5 GHz
80
31 dB
0.75
Deviation from Nominal
Insertion Phase (Deg.)
Deviation from Nominal
Attenuation (dB)
1.00
16 dB
0.50
8 dB
0.25
2 dB
4 dB
0
-0.25
1 dB
-0.50
-0.75
60
50
40
31 dB
30
16 dB
20
8 dB
10
0
4 dB
1 dB
2 dB
-20
0
0.5
1.0
1.5
2.0
2.5
3.0
0
0.5
1.0
1.5
2.0
2.5
Frequency (GHz)
Frequency (GHz)
Attenuation Accuracy
vs. Frequency (25˚C)
Attenuation Phase Accuracy
vs. Frequency (25˚C)
1.00
3.0
80
31 dB
0.75
Deviation from Nominal
Insertion Phase (Deg.)
Deviation from Nominal
Attenuation (dB)
70
-10
-1.00
16 dB
0.50
8 dB
0.25
0
-0.25
1 dB
4 dB
-0.50
2 dB
-0.75
70
60
50
31 dB
40
30
16 dB
20
8 dB
10
4 dB
0
1 dB
2 dB
-10
-1.00
-20
0
1.00
0.5
1.0
1.5
2.0
2.5
3.0
0
1.0
1.5
2.0
2.5
Frequency (GHz)
Attenuation Accuracy
vs. Frequency (85˚C)
Attenuation Phase Accuracy
vs. Frequency (85˚C)
31 dB
0.75
16 dB
0.50
8 dB
0.25
0
-0.25
0.5
Frequency (GHz)
Deviation from Nominal
Insertion Phase (Deg.)
Deviation from Nominal
Attenuation (dB)
AA101-80
-0.50
4 dB
2 dB
-0.75
1 dB
3.0
80
70
60
31 dB
50
40
30
16 dB
20
8 dB
10
0
4 dB
-10
2 dB
1 dB
2.0
2.5
-20
-1.00
0
0.5
1.0
1.5
2.0
2.5
3.0
0
0.5
1.0
1.5
Frequency (GHz)
Frequency (GHz)
Attenuation Accuracy
vs. Frequency (-40˚C)
Attenuation Phase Accuracy
vs. Frequency (-40˚C)
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 10/00A
3.0
3
GaAs IC 5 Bit Digital Attenuator 1 dB LSB Positive Control 0.5–2.5 GHz
AA101-80
Typical Performance Data (0, +3 V)
1.00
Insertion Loss (dB)
-1.25
Deviation from Nominal
Attenuation (dB)
-1.00
+85˚C
-1.50
-1.75
-2.00
+25˚C
-2.25
-2.50
-40˚C
0
0.5
1.0
1.5
2.0
2.5
0
-0.25
4 dB
-0.50
2 dB
1 dB
0
3.0
0.5
1.0
1.5
2.0
2.5
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
Attenuation Accuracy
vs. Frequency (25˚C)
2.50
3.0
1.00
31 dB
16 dB
2.00
8 dB
4 dB
1.75
Deviation from Nominal
Attenuation (dB)
Ins. Loss
2.25
VSWR
8 dB
0.25
-1.00
-3.00
1 dB
2 dB
1.50
1.25
1.00
31 dB
0.75
16 dB
0.50
8 dB
0.25
4 dB
0
-0.25
-0.50
2 dB
-0.75
1 dB
-1.00
0
0.5
1.0
1.5
2.0
2.5
0
3.0
0.5
1.0
1.5
2.0
2.5
Frequency (GHz)
Frequency (GHz)
VSWR vs. Frequency (25˚C)
Attenuation Accuracy
vs. Frequency (85˚C)
80
1.00
70
0.75
3.0
31 dB
Deviation from Nominal
Attenuation (dB)
Deviation from Nominal
Insertion Phase (Deg.)
16 dB
0.50
-0.75
-2.75
60
31 dB
50
40
30
16 dB
20
8 dB
10
0
-10
1 dB
2 dB
4 dB
16 dB
0.50
8 dB
0.25
4 dB
0
-0.25
2 dB
-0.50
1 dB
-0.75
-1.00
-20
0
4
31 dB
0.75
0.5
1.0
1.5
2.0
2.5
3.0
0
0.5
1.0
1.5
2.0
2.5
Frequency (GHz)
Frequency (GHz)
Attenuation Phase Accuracy
vs. Frequency (25˚C)
Attenuation Accuracy
vs. Frequency (-40˚C)
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 10/00A
3.0
GaAs IC 5 Bit Digital Attenuator 1 dB LSB Positive Control 0.5–2.5 GHz
Compression Point vs. Attenuation,
Voltage, and Temperature
60
58
+85˚C
56
Input Power @ 1 dB Compression
Attenuation Control
State
Voltage (V) +25°C (dBm) +85°C (dBm) -40°C (dBm)
Ins. Loss
3
23.1
23.3
24.3
IP3 (dBm)
54
52
-40˚C
50
1
3
23.5
23.3
24.2
2
3
22.7
22.7
23.7
4
3
33.8
33.2
33.8
42
8
3
31.7
31.7
22.7
40
16
3
20.2
20.5
21.4
31
3
21.9
20.6
23.6
48
46
+25˚C
44
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30
Attenuation (dB)
IP3 vs. Attenuation and
Temperature
Pin Out
CBL
VHigh
VHigh
VHigh
VHigh
Reference I.L.
VHigh
VHigh
VHigh
VHigh
0
1 dB
VHigh
VHigh
VHigh
0
VHigh
2 dB
VHigh
VHigh
0
VHigh
VHigh
4 dB
VHigh
0
VHigh
VHigh
VHigh
8 dB
0
VHigh
VHigh
VHigh
VHigh
16 dB
0
0
0
0
31 dB Max. Atten.
V2
V3
V4
8 dB
4 dB
V5
GND
2 dB
1 dB
GND
GND
GND
GND
GND
GND
9
VHigh
V1
11 10
1 dB
15 14 13 12
2 dB
16 dB
J1
16
4 dB
8
8 dB
GND
7
16 dB
Attenuation
J1–J2
GND
6
V5
5
V4
4
V3
3
V2
2
V1
1
Truth Table
0
AA101-80
CBL
J2
VS
10 kΩ
DC blocking capacitors (CBL) and biasing resistor must be supplied externally
for positive voltage operation.
CBL = 47 pF for operation >500 MHz.
VHigh = +3 to +5 V (VS = VHigh ± 0.2 V).
Absolute Maximum Ratings
Characteristic
RF Input Power
Value
2 W > 500 MHz 0/8 V
0.75 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
Note: Exceeding these parameters may cause irreversible damage.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 10/00A
5