AS148-24 [ALPHA]
GaAs IC High Isolation Positive Control SPDT Switch DC-2.5 GHz; 砷化镓集成电路高隔离阳性对照SPDT开关DC- 2.5 GHz的
| 型号： | AS148-24 |
| 厂家： | 
ALPHA INDUSTRIES |
| 描述： | GaAs IC High Isolation Positive Control SPDT Switch DC-2.5 GHz |
| 文件： | 总2页 (文件大小：29K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
GaAs IC High Isolation Positive Control
SPDT Switch DC–2.5 GHz
AS148-24
Features
■ Positive Voltage Control
SOIC-14
PIN 14
0.050
(1.27 mm) BSC
0.050 (1.27 mm)
■ High Isolation (50 dB @ 0.9 GHz
0.016 (0.40 mm)
and 1.9 GHz)
0.244
(6.20 mm)
0.228
0.158 (4.01 mm)
0.150 (3.81 mm)
■ Low DC Power Consumption
(5.80 mm)
PIN 1
INDICATOR
■ Base Station Synthesizer Switch
0.020 (0.51 mm)
0.013 (0.33 mm)
0.016 MAX.
(0.41 mm)
x 45˚
PIN 1
0.068
(1.73 mm) MAX.
0.049 (1.24 mm)
0.016 (0.41 mm)
Description
CHAMFER
GaAs FET IC SPDT switch packaged in an SOIC-14
plastic package for low cost commercial applications. Ideal
building block for base station dual band applications
where synthesizer isolation is critical. Use in conjunction
with the AS123-12 SPST switch to meet GSM synthesizer
isolation requirement.
8˚ MAX.
0.344 (8.75 mm)
0.337 (8.55 mm)
0.158 (4.00 mm)
0.150 (3.80 mm)
0.010 (0.25 mm)
0.004 (0.10 mm)
0.0098 (0.25 mm)
0.0075 (0.19 mm)
Electrical Specifications at 25°C (0, +5 V)
1
2
Parameter
Frequency
Min.
Typ.
Max.
Unit
3
Insertion Loss
DC–1.0 GHz
DC–2.0 GHz
DC–2.5 GHz
0.6
0.8
1.2
0.9
1.1
1.4
dB
dB
dB
Isolation
DC–1.0 GHz
DC–2.0 GHz
DC–2.5 GHz
44
45
32
50
50
42
dB
dB
dB
4
VSWR
DC–2.0 GHz
DC–2.5 GHz
1.3:1
1.5:1
1.5:1
1.8:1
Operating Characteristics at 25°C (0, +5 V)
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
5
Switching Characteristics
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru
60
100
50
ns
ns
mV
Intermodulation Intercept Point (IP3)
Control Voltages
Two-tone Input Power +10 dBm
VLow = 0 to 0.2 V @ 20 µA Max.
0.5–2.0 GHz
+41
dBm
VHigh = +5 V @ 200 µA Max. to +7 V @ 500 µA Max.
VS = VHigh ± 0.2 V
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
1
Specifications subject to change without notice. 3/99A
GaAs IC High Isolation Positive Control SPDT Switch DC–2.5 GHz
AS148-24
Typical Performance Data (0, +5 V)
1.5
70
60
50
40
30
1.25
1.0
0.75
0.5
DC
.5
1.0
1.5
2.0
2.5
DC
.5
1.0
1.5
2.0
2.5
Frequency (GHz)
Frequency (GHz)
Insertion Loss vs. Frequency
Isolation vs. Frequency
1.4
1.3
1.2
1.1
1.0
Absolute Maximum Ratings
Characteristic
Value
RF Input Power
1 W Max. > 500 MHz
0/+8 V Control
Supply Voltage
Control Voltage
Operating Temperature
Storage Temperature
ΘJC
+8 V
-0.2 V, +8 V
-40°C to +85°C
-65°C to +150°C
25°C/W
DC
.5
1.0
1.5
2.0
2.5
Frequency (GHz)
Pin Out
VSWR vs. Frequency
J2
J3
CBL
CBL
Truth Table
V1
12
V2
GND
GND
11
GND
9
V1
VHigh
0
V2
0
J1–J2
Isolation
J1–J3
Insertion Loss
Isolation
14
13
10
8
VHigh
Insertion Loss
VHigh = +5 to +7 V (VS = VHigh ± 0.2 V).
1
2
3
4
5
6
7
VS
GND
GND
GND GND GND
CBL
J1
DC blocking capacitors (CBL) must be supplied externally.
CBL = 100 pF for operation >500 MHz.
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
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