ALPHA AS179-92

PHEMT GaAs IC SPDT Switch DC–3 GHz
AS179-92
Features
SC-70 6 Lead
■ P1 dB +30 dBm Typical @ +3 V
0.079 (2.00 mm)
± 0.008 (0.20 mm)
■ IP3 43 dBm Typical @ +3 V
■ Low Insertion Loss (0.3 dB @ 0.9 GHz)
■ Low DC Power Consumption
■ Ultra Miniature SC-70 6 Lead Package
■ PHEMT Process
0.0256 (0.65 mm)
BSC
0.087 (2.20 mm)
± 0.008 (0.20 mm)
0.049 (1.25 mm)
± 0.004 (0.10 mm)
0.009 (0.23 mm)
REF
PIN 1 INDICATOR
0.035 (0.90 mm)
± 0.004 (0.10 mm)
0.0055
(0.14 mm)
± 0.0015
(0.04 mm)
Description
The AS179-92 is an IC FET SPDT switch in a low cost
miniature SC-70 6 lead plastic package. The AS179-92
features low insertion loss and positive voltage operation
with very low DC power consumption. This general
purpose switch can be used in a variety of
telecommunications applications.
0.010 (0.25 mm)
± 0.006 (0.15 mm)
0.002 (0.005 mm)
± 0.002 (0.005 mm) 0.037 (0.95 mm)
± 0.006 (0.15 mm)
0.008 (0.20 mm)
± 0.004 (0.10 mm)
Electrical Specifications at 25°C (0, +3 V)
Parameter1
Insertion
Frequency2
Loss3
Min.
DC–1.0 GHz
DC–3.0 GHz
Isolation
DC–1.0 GHz
DC–2.0 GHz
DC–3.0 GHz
VSWR4
DC–1.0 GHz
DC–2.0 GHz
DC–3.0 GHz
22
22
20
Typ.
Max.
Unit
0.3
0.4
0.4
0.6
dB
dB
25
25
23
dB
dB
dB
1.2:1
1.2:1
1.3:1
1.4:1
1.4:1
1.4:1
Typ.
Max.
Operating Characteristics at 25°C (0, +3 V)
Parameter
Switching
Characteristics5
Condition
Frequency
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
Min.
Unit
10
20
25
ns
ns
mV
Input Power for 1 dB Compression
0/+3 V
0/+5 V
0.5–3.0 GHz
0.5–3.0 GHz
+30
+34
dBm
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +5 dBm
0/+3 V
0/+5 V
0.5–3.0 GHz
0.5–3.0 GHz
+43
+50
dBm
dBm
Control Voltages
VLow = 0 to 0.2 V @ 20 µA Max.
VHigh = +3 V @ 100 µA Max. to +5 V @ 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. Insertion loss state.
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. 8/00A
1
PHEMT GaAs IC SPDT Switch DC–3 GHz
AS179-92
Typical Performance Data (0, +3 V)
1.0
50
Isolation (dB)
Insertion Loss (dB)
45
0.8
0.6
0.4
40
35
30
25
20
0.2
15
0.0
0.0
10
0.5
1.0
1.5
2.0
2.5
0.0
3.0
0.5
1.0
1.5
2.0
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
Isolation vs. Frequency
3.0
Absolute Maximum Ratings
1.4
Characteristic
1.3
VSWR
2.5
RF Input Power
Value
6 W > 500 MHz
0/+7 V Control
Control Voltage
1.2
1.1
-0.2 V, +8 V
Operating Temperature
-40°C to +85°C
Storage Temperature
-65°C to +150°C
ΘJC
25°C/W
1.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Pin Out
Frequency (GHz)
6
2
5
J3
1
VSWR vs. Frequency
CBL
GND
V2
CBL
Truth Table
J1–J2
J1–J3
VHigh
0
Isolation
Insertion Loss
0
VHigh
Insertion Loss
Isolation
VHigh = +3 to +5 V.
2
J2
CBL
4
V2
3
V1
V1
DC blocking capacitors (CBL) must be supplied externally for
positive voltage operation.
CBL = 100 pF for operation >500 MHz.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 8/00A
J1