AT-283PIN [TE]
Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC - 2 GHz; 数字衰减15.5分贝， 5位， TTL驱动器， DC - 2 GHz的
| 型号： | AT-283PIN |
| 厂家： | 
TE CONNECTIVITY |
| 描述： | Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC - 2 GHz |
| 文件： | 总3页 (文件大小：258K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Digital Attenuator, 15.5 dB, 5-Bit,
TTL Driver, DC - 2 GHz
V 5.00
Features
CR-12
n
n
Attenuation: 0.5 dB Steps to 15.5 dB2
Temperature Stability: ± 0.18 dB from –55°C
to +85°C Typical
n
n
n
n
Low DC Power Consumption
Hermetic Surface Mount Package
Integral TTL Driver
50 O Nominal Impedance
Description
M/A-COM’s AT-283 is a GaAs FET 5-bit digital attenuator
with a 0.5 dB minimum step size and 15.5 dB total
attenuation. This attenuator and integral TTL driver is in a
hermetically sealed ceramic 16-lead surface mount package.
The AT-283 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: TA = 25°C
Parameter
Test Conditions
Units
Min
Typical
Max
Reference
Insertion Loss
DC-0.5 GHz
DC-1.0 GHz
DC-2.0 GHz
dB
dB
dB
—
—
—
—
—
—
2.2
2.5
2.9
Attenuation Accuracy 3
VSWR
Any Single Bit
Any Combination of Bits
DC-2.0 GHz
DC-2.0 GHz
± (0.25 +3% of attenuation setting in dB) dB
± (0.25 +3% of attenuation setting in dB) dB
or ± 0.4 dB, whichever is greater
DC-1.0 GHz
DC-2.0 GHz
—
—
—
—
—
—
1.6:1
1.7:1
Trise, Tfall
Ton, Toff
Transients
10% to 90%
50% Control to 90/10% RF
In-band (peak—peak)
nS
nS
mV
—
—
—
10
27
22
—
—
—
1 dB Compression 4
Input Power
Input Power
0.05 GHz
0.5-2.0 GHz
dBm
dBm
—
—
+20
+28
—
—
4
Input IP3
For two-tone input power
up to +5 dBm
0.05 GHz
0.5-2.0 GHz
dBm
dBm
—
—
+40
+47
—
—
1. All specifications apply when operated with bias voltages of +5.0V for VCC and –5.0V to -8.0V for VEE, and 50 O impedance at
all ports unless otherwise specified.
2. Above reference insertion loss.
3. This attenuator is guaranteed monotonic.
4. VEE = -5.0V for the typical numbers given.
Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC - 2 GHz
Electrical Specifications1: TA = 25°C
AT-283
V 5.00
Parameter
Test Conditions
Units
Min
Typical
Max
4
Input IP2
For two-tone input power
up to +5 dBm
0.05 GHz
0.5-2.0 GHz
dBm
dBm
—
—
+53
+68
—
—
VCC
VEE
—
—
V
V
4.5
-8.0
5.0
—
5.5
-5.0
ICC
VCC = 4.5 to 5.5V
mA
—
—
5.0
Vctl = 0 to 0.8V, or VCC - 2.1V to VCC
IEE
VEE = -5.0 to –8.0V
mA
—
—
1.0
Vctl
Vctl
Logic 0 (TTL)
Logic 1 (TTL)
V
V
0.0
2.0
—
—
0.8
5.0
Input Leakage Current (Low)
Input Leakage Current (High)
0 to 0.8V
2.0 to 5.0V
µA
µA
—
—
—
—
1.0
1.0
Truth Table
Recommended PCB Layout
Control Inputs
C1
0
C2
0
C3
0
C4
0
C5
0
Attenuation
Reference
0.5 dB
1 dB
1
0
0
0
0
0
1
0
0
0
0
0
1
0
0
2 dB
0
0
0
1
0
4 dB
0
0
0
0
1
8 dB
1
1
1
1
1
15.5 dB
0 = TTL Low; 1 = TTL High
Functional Schematic (Top View)
Absolute Maximum Ratings
Parameter
Absolute Maximum
Maximum Input Power
0.05 GHz
+27 dBm
+34 dBm
0.5-2.0 GHz
Supply Voltages
VCC
VEE
+5.5V
-8.5V
Control Voltage
-0.5V to VCC + 0.5V
-55°C to +125°C
-65°C to +150°C
Operating Temperature
Storage Temperature
Note: Operation of this device above any on of these
parameters may cause permanent damage.
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, 15.5 dB, 5-Bit, TTL Driver, DC - 2 GHz
AT-283
V 5.00
Typical Performance Curves
Attenuation Accuracy vs. Frequency
0.5, 1, 2 dB Bits
Reference Insertion Loss vs.
+85°C
+25°C
-55°C
0.5
0.3
5.0
4.0
3.0
2.0
1.0
0.0
0.0
-0.3
-0.5
0
500
1000
1500
2000
0
500
1000
1500
2000
Frequency (MHz)
Frequency (MHz)
VSWR vs. Frequency
Reference Loss, 0.5, 1, 2 dB Bits
Attenuation Accuracy vs. Frequency
4, 8 dB Bits and Full Attenuation
Full Atten.
1.0
2.0
1.8
1.6
1.4
1.2
1.0
0.5
0.0
-0.5
0
500
1000
1500
2000
0
500
1000
1500
2000
Frequency (MHz)
Frequency (MHz)
VSWR vs. Frequency
4, 8 dB Bits and Full Attenuation
Ordering Information 5
2.0
1.8
1.6
1.4
1.2
1.0
Part Number
Package
AT-283 PIN
CR-12
5. Contact the factory for standard or custom screening
requirements.
0
500
1000
1500
2000
Frequency (MHz)
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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