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AT-260RTR 반도체 회로 부품 판매점

Digital Attenuator/ 31 dB/ 5-Bit DC . 2 GHz



Tyco Electronics 로고
Tyco Electronics
AT-260RTR 데이터시트, 핀배열, 회로
Digital Attenuator, 31 dB, 5-Bit
DC – 2 GHz
Features
q Attenuation: 1-dB Steps to 31 dB
q Temperature Stability: ± 0.15 dB from -40°C
to +85°C Typical
q Ultra Low DC Power Consumption
q Low Intermodulation Products: IP3 = 50 dBm
q Low Cost SSOP 20 Plastic Package
q Tape and Reel Packaging Available
SSOP-20
AT-260
V 2.00
Description
M/A-COM's AT-260 is a 5-bit, 1-dB step GaAs MMIC digi-
tal attenuator in a low cost SSOP-20 surface mount plastic
package. The AT-260 is ideally suited for use where high
accuracy, fast switching, very low power consumption and
low intermodulation products are required at a low cost.
Typical applications include radio and cellular equipment,
wireless LANS, GPS equipment and other Gain/Level
Control circuits.
The AT-260 is fabricated with a monolithic GaAs MMIC
using a mature 1-micron process. The process features full
chip passivation for increased performance and reliability.
Electrical Specifications, TA = 25°C
Ordering Information
Part No.
Package
AT-260 PIN
AT-260TR
AT-260RTR
SSOP 20-Lead
Forward Tape & Reel*
Reverse Tape & Reel*
* If specific reel size is requIred, consult factory for part number
assignment.
Parameter
Reference
Insertion Loss
Attenuation
Accuracy2
VSWR
Trise, Tfall
Ton, Toff
Transients
One dB
Compression
IP2
IP3
(any state)
Test Conditions1
DC – 0.1 GHz
DC – 0.5 GHz
DC – 1.0 GHz
DC – 2.0 GHz
DC – 1.0 GHz
DC – 2.0 GHz
10% to 90% RF, 90% to 10% RF
50% Control to 90% RF, 50% Control to 10% RF
In Band
Input Power
Input Power
0.05 GHz
0.5-2.0 GHz
Measured Relative
0.05 GHz
to Input Power
0.5-2.0 GHz
(for two-tone input power up to +5 dBm)
Measured Relative
0.05 GHz
to Input Power
0.5-2.0 GHz
(for two-tone input power up to +5 dBm)
Unit
Min.
Typ.
Max
dB 1.6 1.8
dB 1.7 1.9
dB 1.9 2.2
dB 2.2 2.5
± (0.20 dB + 3% of Atten. Setting in dB) dB
± (0.30 dB + 3% of Atten.Setting in dB) dB
1.5:1
nS 8
nS 15
mV 2
dBm
dBm
20
27
dBm
dBm
45
60
dBm
dBm
34
50
1. All measurements at 1 GHz in a 50system, unless otherwise specified.
2.Attenuation accuracy specifications apply with negative bias control and low inductance grounding.


AT-260RTR 데이터시트, 핀배열, 회로
Absolute Maximum Ratings1
Parameter
Absolute Maximum
Max. Input Power
0.05 GHz
0.5–2.0 GHz
Control Voltage
Operating Temperature
Storage Temperature
+27 dBm
+34 dBm
+5V, –8.5V
–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.
Typical Performance
Functional Schematic
V 2.00
Pin Configuration
Pin No.
1
2
3
4
5
6
7
8
9
10
Description
VC1
VC1
VC2
VC2
VC3
VC3
VC4
VC4
NC
VC5
Pin No.
11
12
13
14
15
16
17
18
19
20
Description
RF1
GND
GND
GND
GND
GND
GND
GND
GND
RF2
Truth Table
Control Inputs
VC5 VC4 VC4 VC3 VC3 VC2 VC2 VC1 VC1 Attenuation
(dB)
1 1 0 1 0 1 0 1 0 Reference
0 1 0 1 0 1 0 10
1 dB
1 0 1 1 0 1 0 10
2 dB
1 1 0 0 1 1 0 10
4 dB
1 1 0 1 0 0 1 10
8 dB
1 1 0 1 0 1 0 01
0 0 1 0 1 0 1 01
16 dB
31 dB
0 = VIN Low = 0 V = 0 to -0.2 V @ 20 µA maximum
1 = VIN High = -5 V @ 20 µA typical to -8 V @ 200 µA maximum




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Digital Attenuator/ 31 dB/ 5-Bit DC . 2 GHz - Tyco Electronics