AT-230 [TE]
Digital Attenuator, 28 dB, 3-Bit DC - 2 GHz; 数字衰减28分贝， 3位DC - 2 GHz的
| 型号： | AT-230 |
| 厂家： | 
TE CONNECTIVITY |
| 描述： | Digital Attenuator, 28 dB, 3-Bit DC - 2 GHz |
| 文件： | 总2页 (文件大小：33K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Digital Attenuator, 28 dB, 3-Bit
DC - 2 GHz
AT-230
SO-14
Features
● Attenuation 4-dB Steps to 28 dB
● High Accuracy +/- 3%
● Low DC Power Consumption: 50 µW
● Low Intermodulation Product: +50 dBm IP
● Temperature Range: -40˚C to +85˚C
● Low Cost SOIC14 Plastic Package
Pin #14
Pin #1
.2284-.2440
.1497-.1574
(3.80-4.00)
-B-
(5.80-6.20)
3
.010(0.25) M B M
Orientation
Mark
.0532-.0688
(1.35-1.75)
1
.3357-.3444
(8.55-8.75)
-A-
● Tape and Reel Packaging Available
.0099-.0196 x 45° Chamfer
(0.25-0.50)
0°-8°
-C-
Description
0.050(1.27) BSC.
.016-.050
(0.40-1.27)
.0075-.0098
(0.19-0.25)
.013-.020 TYP
(0.33-0.51)
.0040-.0098
(0.10-0.25)
M/ A-COM’s AT-230 is a 3-bit, 4-dB step GaAs MMIC
digital attenuator in a low cost SOIC 14-lead surface
mount plastic package. The AT-230 is ideally suited for
use where high accuracy, fast switching, very low power
consumption and low intermodulation products are
required. Typical applications include radio and cellular
equipment, wireless LANs, GPS equipment and other
Gain/Level Control circuits.
.010(0.25) M C A M B S
14-Lead SOP outline dimensions
Narrow body .150
(All dimensions per JEDEC No. MS-012-AB, Issue C)
Dimensions in ( ) are in mm.
Ordering Information
The AT-230 is fabricated with a monolithic GaAs MMIC
using a mature 1-micron process. The process features full
chip passivation for increased performance and reliability.
Part Number
AT-230 PIN
AT-230TR
Package
SOIC 14-Lead Plastic
Forward Tape & Reel
Reverse Tape & Reel
AT-230RTR
* If specific reel size is required, consult factory for part
number assignment.
Electrical Specifications1, T = +25°C
A
Parameter
Reference Insertion Loss
Test Conditions
Unit
dB
dB
dB
dB
Min.
Typ.
1.2
1.5
1.6
1.8
Max
1.4
1.7
1.8
2.1
DC – 0.1 GHz
DC – 0.5 GHz
DC – 1.0 GHz
DC – 2.0 GHz
Attenuation Accuracy
VSWR
DC – 1.0 GHz
DC – 2.0 GHz
± (0.15 dB +3% of Attenuation Setting in dB) dB
± (0.30 dB +3% of Attenuation Setting in dB) dB
1.2:1
Trise, Tfall
Ton, Toff
Transients
10% to 90% RF, 90% to 10% RF
50% Control to 90% RF, 50% Control to 10% RF
In Band
nS
nS
mV
12
18
25
1 dB
Compression
Input Power
Input Power
0.05 GHz
0.5 – 2.0 GHz
dBm
dBm
20
28
Measured Relative
to Input Power
0.05 GHz
0.5 – 2.0 GHz
dBm
dBm
45
68
IP2
IP3
(for two-tone input power up to +5 dBm)
Measured Relative
to Input Power
0.05 GHz
0.5 – 2.0 GHz
dBm
dBm
40
50
(for two-tone input power up to +5 dBm)
1. All measurements at 1 GHz in a 50Ω system, unless otherwise specified.
Specifications Subject to Change Without Notice.
V2.0
M/A-COM, Inc.
■
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
■
Telephone: 800-366-2266
Digital Attenuator, 28 dB, 3-Bit
Absolute Maximum Ratings1
AT-230
Functional Schematic
Parameter
Absolute Maximum
RF1 GND GND GND GND GND RF2
11
13
14
12
9
8
10
Max. Input Power
50 MHz
500-2000 MHz
Control Voltage
+27 dBm
+34 dBm
+5 V, -8.5 V
16 dB
8 dB
4dB
Operating Temperature
Storage Temperature
-40°C to +85°C
-65°C to +150°C
1. Operation of this device above any one of these parameters may cause
permanent damage
1
2
3
4
5
6
7
Truth Table
VC3 GND
VC1 VC1 VC2 VC2
VC3
Control Input
VC3
VC3
VC2
VC2
VC1
VC1 Atten (dB)
1
0
1
1
0
0
1
0
0
1
1
1
0
1
0
0
0
1
0
1
1
1
1
0
0
0
0
0
1
1
Reference
4 dB
8 dB
16 dB
28 dB
0 = VIN Low = 0 V to -0.2 V @ 20 *A maximum
1 = VIN High = -5 V @ 10 *A typ. to -8 V @ 200 *A maximum
Typical Performance
INSERTION LOSS vs FREQUENCY
ATTENUATION ACCURACY vs FREQUENCY
3.0
1.5
1
4 dB ATTEN
16 dB ATTEN
+85°C
+25°C
2.0
0.5
0
1.0
0
-0.5
8 dB ATTEN
28 dB ATTEN
1.5
-1
-40°C
-1.5
0
0.5
1.5
2.0
1.0
FREQUENCY (GHz)
0
0.5
2.0
1.0
FREQUENCY (GHz)
VSWR vs FREQUENCY
ATTENUATION vs FREQUENCY
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
-22
-24
-26
-28
-30
-32
2.0
1.8
1.6
1.4
16 dB ATTEN
4 dB ATTEN
INSERTION LOSS
8 dB ATTEN
1.2
1
0
0.5
1.5
2.0
0
0.5
1.5
2.0
1.0
FREQUENCY (GHz)
1.0
FREQUENCY (GHz)
Specifications Subject to Change Without Notice.
V2.0
M/A-COM, Inc.
■
1011 Pawtucket Boulevard, Lowell, MA 01853 USA
■
Telephone: 800-366-2266
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