AT20-0263 [TE]
Digital Attenuator, 31 dB, 5-Bit, TTL Driver, DC - 2 GHz; 数字衰减31分贝， 5位， TTL驱动器， DC - 2 GHz的
| 型号： | AT20-0263 |
| 厂家： | 
TE CONNECTIVITY |
| 描述： | Digital Attenuator, 31 dB, 5-Bit, TTL Driver, DC - 2 GHz |
| 文件： | 总3页 (文件大小：226K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Digital Attenuator, 31 dB, 5-Bit,
TTL Driver, DC - 2 GHz
V 3.00
Features
CR-12
n
Attenuation: 1 dB steps to 31 dB
n
Temperature Stability: ± 0.18 dB from –40°C to +85°C
Typical
n
n
n
n
n
Low DC Power Consumption
Surface Mount Package
Integral TTL Driver
Low Cost/High Performance
50 Ohm Nominal Impedance
Description
M/A-COM’s AT20-0263 is a GaAs FET 5-bit digital
attenuator with a 1 dB minimum step size and 31 dB total
attenuation. This attenuator and integral TTL driver is in a
ceramic 16-lead surface mount package. The AT20-0263 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. Available with enhanced performance as
fully hermetic version. Environmentally screenable as P/N
AT-263.
Electrical Specifications: TA = 25°C1
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
2.2
2.5
2.4
2.8
3.0
Attenuation Accuracy 2
Any Single Bit
Any Combination of Bits
DC - 1.0 GHz
DC - 2.0 GHz
± (0.25 +3% of atten setting in dB) dB
± (0.25 +3% of atten setting in dB) dB
or ± 0.4 dB, whichever is greater
VSWR
Trise, Tfall
—
DC - 2.0 GHz
Ratio
ns
—
—
—
—
—
50
1.6:1
—
10% to 90%
—
—
—
Ton, Toff
50% Control to 90/10% RF
In-Band (peak-peak)
ns
150
50
—
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
+48
—
—
For two-tone Input Power
Up to +5 dBm
0.05 GHz
0.5 - 2.0 GHz
dBm
dBm
—
—
+45
+68
—
—
Vcc
Vee
—
—
—
—
V
V
4.5
5.0
—
5.5
-8.0
-5.0
1. All specifications apply when operated with bias voltages of +5V for Vcc and –5.0V for Vee.
2. This attenuator is guaranteed monotonic.
Digital Attenuator, 31 dB, 5-Bit, TTL Driver, DC - 2 GHz
Electrical Specifications: TA = 25°C
AT20-0263
V 3.00
Parameter
Test Conditions
Frequency
Units
Min
Typ
Max
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
Absolute Maximum Ratings 3
Truth Table
Control Inputs
Parameter
Absolute Maximum
Max Input Power
0.5 GHz
0.5 - 2.0 GHz
C5
0
C4
0
C3
0
C2
0
C1
0
Attenuation
Reference
1 dB
+27 dBm
+34 dBm
0
0
0
0
1
Supply Voltages
Vcc
Vee
+5.5V
-8.5V
0
0
0
1
0
2 dB
Control Voltage 4
Operating Temperature
Storage Temperature
-0.5V to Vcc +0.5V
-40°C to +125°C
-65°C to +150°C
0
0
1
0
0
4 dB
0
1
0
0
0
8 dB
1
0
0
0
0
16 dB
1
1
1
1
1
31 dB
3. Operation of this device above any one of these parameters
may cause permanent damage.
4. Standard CMOS TTL interface, latch-up will occur if logic
signal is applied prior to power supply.
0 = TTL Low
1 = TTL High
Functional Schematic (Top View)
C5
+5V
-5V
C4
RF2
16 dB
8 dB
GND
GND
GND
4 dB
2 dB
1 dB
C3
GND
GND
C2
C1
GND Orientation Mark
RF1 PIN 1
PIN 16 GND
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, 31 dB, 5-Bit, TTL Driver, DC - 2 GHz
Typical Performance Curves
AT20-0263
V 3.00
Ref. Insertion Loss vs. Frequency
Attenuation Accuracy vs. Frequency
+85°C
+25°C
-55°C
1,2,4,8,16 dB
Full Attenuation
0.5
0
5
4
3
2
1
0
-0.5
-1
-1.5
0.0
0.5
1.0
1.5
2.0
0.0
0.5
1.0
Frequency (GHz)
1.5
2.0
Frequency (GHz)
VSWR vs. Frequency
Ordering Information
4 dB State
1 dB State
Part Number
Package
2.00
1.80
1.60
1.40
1.20
1.00
AT20-0263
CR-12
0.00
0.50
1.00
1.50
2.00
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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