AT-232 [TE]
Digital Attenuator, 30 dB, 4-Bit, DC - 2 GHz; 数字衰减30分贝， 4位， DC - 2 GHz的
| 型号： | AT-232 |
| 厂家： | 
TE CONNECTIVITY |
| 描述： | Digital Attenuator, 30 dB, 4-Bit, DC - 2 GHz |
| 文件： | 总3页 (文件大小：230K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Digital Attenuator, 30 dB, 4-Bit,
DC - 2 GHz
V 3.00
Features
CR-6
n
Attenuation: 2 dB steps to 30 dB
n
Temperature Stability: ± 0.18 dB from –55°C to +85°C
Typical
n
n
n
n
Low DC Power Consumption
Hermetic Surface Mount Package
Fast Switching Speed, 12 ns Typical
50 Ohm Nominal Impedance
Description
M/A-COM’s AT-232 is a GaAs FET 4-bit digital attenuator
with a 2 dB minimum step size and 30 dB total attenuation.
This attenuator is in a hermetically sealed ceramic 16-lead
surface mount package. The AT-232 is ideally suited for
use where accuracy, fast switching, very low power
consumption and low intermodulation products are
required. Typical applications include dynamic range
setting in precision receiver circuits and other gain/leveling
control circuits. Environmental screening is available.
Contact the factory for information.
Electrical Specifications1
(From –55°C to +85°C)
Parameter
Test Conditions
Frequency
Units
Min
Typ
Max
Reference Insertion Loss
—
DC - 0.5 GHz
DC - 1.0 GHz
DC - 2.0 GHz
dB
dB
dB
—
—
—
—
—
—
2.0
2.3
2.5
Attenuation Accuracy 2
Any Single Bit
DC - 1.0 GHz
DC - 2.0 GHz
± (0.15 dB +3% of atten setting in dB) dB
± (0.2 dB +3% of atten setting in dB) dB
Or ± 0.45 dB, whichever is greater
Any Combination of Bits
DC - 1.0 GHz
DC - 2.0 GHz
± (0.22 dB +3% of atten setting in dB) dB
± (0.25 dB +4% of atten setting in dB) dB
Or ± 0.45 dB, whichever is greater
VSWR
Trise, Tfall
—
DC - 2.0 GHz
Ratio
ns
—
—
—
—
—
12
18
25
1.6:1
—
10% to 90%
—
—
—
Ton, Toff
50% Control to 90/10% RF
In-Band (peak-peak)
ns
—
Transients
mV
—
1 dB Compression
Input Power
Input Power
0.05 GHz
0.5 - 2.0 GHz
dBm
dBm
—
—
+20
+28
—
—
Input IP3
Input IP2
For two-tone Input Power
Up to +5 dBm
0.05 GHz
0.5 - 2.0 GHz
dBm
dBm
—
—
+40
+50
—
—
For two-tone Input Power
Up to +5 dBm
0.05 GHz
0.5 - 2.0 GHz
dBm
dBm
—
—
+45
+68
—
—
1. All specifications apply when operated with control votlages of 0.0V to -5.0V.
2. This attenuator is guaranteed monotonic.
Digital Attenuator, 30 dB, 4-Bit, DC - 2 GHz
AT-232
V 3.00
Electrical Specifications (From –55°C to +85°C)
Parameter
Input Leakage Current (Low)
Input Leakage Current (High)
Test Conditions
-0.2 to 0V
-8.0 to -5.0V
Frequency
Units
µA
Min
—
Typ
—
Max
20
—
—
µA
—
—
200
Absolute Maximum Ratings 3
Truth Table
Parameter
Absolute Maximum
Control Inputs
/VC4 VC4 /VC3 VC3 /VC2 VC2 /VC1 VC1 Atten.
(dB)
Max Input Power
0.05 GHz
0.5 - 2.0 GHz
+27 dBm
+34 dBm
-5V
0V
0V
-5V
0V
-5V
-5V
0V
0V
0V
-5V
-5V
-5V
0V
0V
0V
-5V
-5V
-5V
-5V
0V
0V
0V
Ref.
2 dB
Control Voltage
+0.5V, -8.5V
-55°C to +125°C
-65°C to +150°C
Operating Temperature
Storage Temperature
-5V
-5V
-5V
0V
-5V
0V
0V
0V
4 dB
0V
-5V
-5V
0V
-5V
0V
0V
8 dB
3. Operation of this device above any one of these parameters
may cause permanent damage.
0V
0V
-5V
0V
-5V
-5V
16 dB
30 dB
-5V
-5V
-5V
0V
Functional Schematic (Top View)
VC1
/VC1
VC2
/VC2
VC3
/VC3
VC4
/VC4
RF1
16 dB
8 dB
4 dB
GND
GND
GND
GND
GND
GND Orientation Mark
RF2
2 dB
2
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
Digital Attenuator, 30 dB, 4-Bit, DC - 2 GHz
Typical Performance Curves
AT-232
V 3.00
VSWR vs. Frequency
Ref. Insertion Loss vs. Frequency
-55°C
+25°C
+85°C
2 dB
4 dB 8 dB 16 dB 30 dB Insertion Loss
4
3
2
1
0
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
Frequency (GHz)
Attenuation Accuracy vs. Frequency
Ordering Information
16 dB
4 dB
2 dB
8 dB
30 dB
3.00
2.50
2.00
1.50
1.00
0.50
0.00
-0.50
-1.00
Part Number
Package
CR-6
AT-232 PIN
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
3
Specifications subject to change without notice.
n North America: Tel. (800) 366-2266
n Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
Visit www.macom.com for additional data sheets and product information.
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