ALPHA AS202-321

Preliminary
PHEMT GaAs IC High Power
SP3T Switch DC–2 GHz
AS202-321
Features
MLP-12
■ Positive Low Voltage Control
(0/2.75 V Operation)
0.008 (0.20 mm)
SEATING PLANE
0.118 (3.00 mm)
■ Low Insertion Loss (< 0.6 dB @ 2 GHz)
PIN 1
INDICATOR
0.001
(0.02 mm)
0.118
(3.00 mm)
■ High Isolation (30 dB at 1 and 2 GHz)
■ Excellent Harmonics Performance
(65 dBc @ 2.75 V 1 GHz PIN = 34 dBm)
0.029
(0.73 mm)
EXPOSED
PAD
■ Miniature MLP-12 Plastic Package
■ PHEMT Process
The AS202-321 is a PHEMT GaAs IC SP3T antenna
switch operating in the 900 MHz and 1800 MHz
frequency bands. Switching between the antenna and
TX/RX ports is accomplished with 3 control inputs. When
the control inputs are driven with the appropriate voltages,
a low insertion loss path is provided from an antenna
port to an RX or TX port, while the other ports have
high attenuation.
PIN 1
INDICATOR
0.057 (1.45 mm) SQ.
+ 0.004 (0.10 mm)
- 0.006 (0.15 mm)
0.009 (0.23 mm)
+ 0.003 (0.07 mm)
- 0.002 (0.05 mm)
Description
0.030
(0.75 mm)
± 0.002
(0.05 mm)
0.0196
(0.50 mm) BSC
Electrical Specifications at 25°C (0, +2.75 V)
Parameter
Frequency
Insertion Loss
Ant-RF1, RF2, RF3
0.1–0.5 GHz
0.5–1.0 GHz
1.0–2.0 GHz
Isolation
Ant-RF1, RF2, RF3
0.1–0.5 GHz
0.5–1.0 GHz
1.0–2.0 GHz
Return Loss
Ant-RF1, RF2, RF3
0.1–0.5 GHz
0.5–1.0 GHz
1.0–2.0 GHz
Min.
25
22
22
Typ.
Max.
Unit
0.55
0.60
0.80
0.75
0.80
1.10
dB
dB
dB
28
25
25
dB
dB
dB
18
18
14
dB
dB
dB
Operating Characteristics at 25°C (0, +2.75 V)
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
2nd Harmonic
34 dBm In @ 2.75 V
1 GHz
72
3rd Harmonic
34 dBm In @ 2.75 V
1 GHz
65
dBc
2nd Harmonic
32 dBm In @ 2.75 V
2 GHz
70
dBc
3rd Harmonic
32 dBm In @ 2.75 V
2 GHz
65
dBc
Gate Leakage Current
34 dBm In @ 2.75 V
Control Voltages
VHigh
VLow
-0.25
2.60
dBc
0.030
mA
0.25
5.00
V
V
0
2.75
Alpha Industries, Inc. [781] 935-5150 • Fax [978] 241-7906 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 8/01A
1
PHEMT GaAs IC High Power SP3T Switch DC–2 GHz
AS202-321
2.0
0
1.6
-5
1.2
-10
0.8
-15
0.4
0
-0.4
Ant-RF1
-0.8
-1.2
Isolation (dB)
-30
-50
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)
Insertion Loss vs. Frequency
Isolation vs. Frequency
3.0
90
-5
-10
Ant-RF2
-15
Ant-RF3
Ant-RF1
-20
2nd and 3rd Harmonics (dBc)
0
Return Loss (dB)
Ant-RF1
Ant-RF2
-35
-45
-2.0
70
60
0.5
1.0
1.5
2.0
2.5
3rd Harmonic
50
40
30
20
10
0
2.0
3.0
2.5
3.0
3.5
4.0
4.5
Frequency (GHz)
Control Voltage (V)
Return Loss vs. Frequency
2nd and 3rd Harmonics
vs. Control Voltage
Pin Out
V3
Ant-RF1
Ant-RF2
Ant-RF3
VHigh
VLow
VLow
Ins. Loss
Isolation
Isolation
VLow
VHigh
VLow
Isolation
Ins. Loss
Isolation
VLow
VLow
VHigh
Isolation
Isolation
Ins. Loss
CBL
V2
ANT
Truth Table
GND
0
2nd Harmonic
80
-25
V1
Ant-RF3
-25
-40
Ant-RF2
Ant-RF3
-1.6
-20
GND
Insertion Loss (dB)
Typical Performance Data (0, +2.75 V, CBL = 47 pF)
VLow = 0–0.2 V.
VHigh = 2.75–5 V.
RF1
CBL
V1
V3
N/C
RF2
CBL
GND
V2
GND
DC blocks required. CBL = 47 pF for operation >500 MHz.
2
Alpha Industries, Inc. [781] 935-5150 • Fax [978] 241-7906 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 8/01A
CBL
RF3