AT20-0273 [TE]
Digital Attenuator, 32 dB, 2-Bit, TTL Driver, DC - 2 GHz; 数字衰减32分贝， 2位， TTL驱动器， DC - 2 GHz的
| 型号： | AT20-0273 |
| 厂家： | 
TE CONNECTIVITY |
| 描述： | Digital Attenuator, 32 dB, 2-Bit, TTL Driver, DC - 2 GHz |
| 文件： | 总3页 (文件大小：223K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Digital Attenuator, 32 dB, 2-Bit,
TTL Driver, DC - 2 GHz
V 3.00
Features
CR-11
n
Attenuation: 16 dB steps to 32 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 AT20-0273 is
a
GaAs FET digital
attenuator with a 16 dB minimum step size and 32 dB total
attenuation. This attenuator and integral TTL driver is in a
sealed ceramic 16-lead surface mount package. The
AT20-0273 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-273.
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
—
—
—
1.2
1.3
1.5
1.6
1.7
1.9
Attenuation Accuracy 2
C1 Bit
Full Attenuation (32 dB)
DC - 2.0 GHz
DC - 0.5 GHz
DC - 1.0 GHz
DC - 2.0 GHz
± 3% of attenuation setting in dB
± 3% of attenuation setting in dB
± 3% of attenuation setting in dB, -1 dB
± 3% of attenuation setting in dB, -3 dB
VSWR
Trise, Tfall
—
DC - 2.0 GHz
Ratio
ns
—
—
—
—
—
50
1.4:1
—
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
—
—
+38
+48
—
—
For two-tone Input Power
Up to +5 dBm
0.05 GHz
0.5 - 2.0 GHz
dBm
dBm
—
—
+44
+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, 32 dB, 2-Bit, TTL Driver, DC - 2 GHz
Electrical Specifications: TA = 25°C
AT20-0273
V 3.00
Parameter
Test Conditions
Frequency
Units
Min
Typ
Max
Icc
Vcc = 4.5 to 5.5V
—
mA
—
—
2.0
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
Parameter
Absolute Maximum
Control Input
C2
0
C1
0
Attenuation
Reference
16 dB
Max Input Power
0.5 GHz
0.5 - 2.0 GHz
+27 dBm
+34 dBm
0
1
Supply Voltages
Vcc
Vee
+5.5V
-8.5V
1
0
32 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 = TTL Low
1 = TTL High
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.
Functional Schematic (Top View) 5
RF1
GND
GND
GND
Vee
RF2
GND
GND
GND
16 dB
16 dB
GND
C1
Vcc
NC
GND Orientation Mark
C2 PIN 1
PIN 16 NC
5. Use the C1 control for a single 16-dB bit.
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, 32 dB, 2-Bit, TTL Driver, DC - 2 GHz
Typical Performance Curves
AT20-0273
V 3.00
Ref. Insertion Loss vs. Frequency
Attenuation Accuracy vs. Frequency
Full Attenuation
16 dB bit
+85°C
+25°C
-55°C
1.0
0.0
5
4
3
2
1
0
-1.0
-2.0
-3.0
-4.0
-5.0
0.0
0.5
1.0
1.5
2.0
2.5
3
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Frequency (GHz)
Frequency (GHz)
VSWR vs. Frequency
Ordering Information
Full Attenuation
16 dB State
32 dB State
Part Number
Package
CR-11
2.00
1.80
1.60
1.40
1.20
1.00
AT20-0273
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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