MA-COM AT65-0009-TB

AT65-0009
Voltage Variable Attenuator
824 - 960 MHz
Features
V 1.00
SOT-25
n 25 dB Attenuation Range
n High IP3
n Excellent Linearity Performance
n Surface Mount SOT-25 Package
n Low Cost/High Performance
n 50 Ohm Nominal Impedance
Description
M/A-COM’s AT65-0009 is an integrated assembly containing two PIN diodes and a passive glass quadrature hybrid.
This device is packaged in a 5 leaded SOT plastic surface
mount package. The diodes are biased to +3.5V for maximum attenuation using the suggested Bias Circuit. The
AT65-0009 is ideally suited for GSM communication applications requiring variable attenuation in the 824 to 960
MHz bandwidth.
Electrical Specifications: TA = 25°C, Z0 = 50Ω
Parameter
Test Conditions
Units
Min.
Typ.
Max.
Insertion Loss
VB = 0V
dB
—
1.7
2.1
Ratio
—
1.7
2.2
VSWR
Attenuation Flatness vs.
Frequency
0 - 10 dB
0 - 20 dB
0 - 30 dB
dB
dB
dB
—
—
—
0.5
0.5
1.0
1.3
1.3
2.5
Switching Speed
50% control to 90%/10% RF
µSec
—
5.0
7.0
Input IP3
Two Tones 900 MHz, 905 MHz, +5 dBm
VB = 0V
dB
—
40
—
Input IP2
Two Tones 900 MHz, 905 MHz, +5 dBm
VB = 0V
dB
—
34
—
Attenuation
VB = 3.7V
dB
25
28
—
Voltage Variable Attenuator, 824 - 960 MHz
AT65-0009
V 1.00
Pin Configuration
Recommended PCB Configuration
Pin #
Function
1
RFIN VB
2
GND
3
RFOUT VB
4
GND
5
GND
Functional Diagram and
Bias Circuitry
GND
GND
1. Circuit Material = FR-4, TETRA II, 0.031 inches thick.
2. Line Width = 0.025 inches, Line Spacing = 0.0056
inches.
Absolute Maximum Ratings 3
GND
PIN 1
PIN 3
C5
C6
L1
L2
C1
RF IN
C4
C2
Parameter
Absolute Maximum
Max Input Power
+27 dBm
Operating Voltage
+5 V
Operating Temperature
-40°C to +85°C
Storage Temperature
-65°C to +125°C
RF OUT
C3
R1
VB
3. Operation of this device above any one of these
parameters may cause permanent damage.
External Circuitry Parts 4
Part
Value
Purpose
C1
390 pF
DC Block
C2
390 pF
DC Block
Part Number
Package
C3
390 pF
By-pass
AT65-0009
Bulk Packaging
C4
390 pF
By-pass
AT65-0009TR
Tape and Reel (1K Reel)
L1
180 nH
RF Choke
L2
180 nH
RF Choke
AT65-0009-TB
Units Mounted on Test Board
R1
10 kOhm
Current Limiting
C55
1.5 pF
RF Tune
5
1.5 pF
RF Tune
C6
Ordering Information
4. All external circuitry parts are readily available, low cost
surface mount components (.060 in. x .030 in or .080 in
x .050 in.).
5. See Application Note MA-C-05010008A for external tuning
capacitor values to suit specific Communication Bandwidths.
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.
2
Voltage Variable Attenuator, 824 - 960 MHz
AT65-0009
V 1.00
Typical Performance Curves
Attenuation vs. Voltage with 1.5 pF
Tuning Cap @ +85°C
35.0
35.0
30.0
30.0
25.0
25.0
Attenuation
Attenuation
Attenuation vs. Voltage with 1.5 pF
Tuning Cap @ -40°C
20.0
15.0
20.0
15.0
10.0
10.0
5.0
5.0
0.0
0.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0.0
1.0
Volts
2.0
3.0
4.0
Volts
Attenuation vs. Voltage with 1.5 pF
Tuning Cap @ +25°C
Loss vs. Frequency @ -40°C
No Tuning Cap
2.00
35.0
30.0
1.80
Loss (dB)
Attenuation
25.0
20.0
15.0
1.60
1.40
10.0
1.20
5.0
0.0
1.00
0.0
1.0
2.0
3.0
4.0
820
840
860
Volts
Loss vs. Frequency @ +85°C
No Tuning Cap
900
920
940
960
Loss vs. Frequency @ +25°C
No Tuning Cap
2.00
2.00
1.80
1.80
Loss (dB)
Loss (dB)
880
Frequency (MHz)
1.60
1.40
1.60
1.40
1.20
1.20
1.00
1.00
820
840
860
880
900
920
940
960
Frequency (MHz)
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.
820
840
860
880
900
Frequency (MHz)
920
940
960
Voltage Variable Attenuator, 824 - 960 MHz
AT65-0009
V 1.00
Typical Performance Curves
Attenuation vs. Freq. With 1.5 pF
Tuning Cap @ +85°C
Attenuation vs. Freq. With 1.5 pF
Tuning Cap @ -40°C
2.0
3.0
3.2
1.0
35.00
30.00
30.00
25.00
25.00
Attenuation
Attenuation
1.0
35.00
20.00
15.00
10.00
5.00
2.0
3.0
3.7
20.00
15.00
10.00
5.00
-
820
840
860
880
900
920
940
960
820
840
860
880
Frequency
2V
3V
920
940
960
Frequency
Attenuation vs. Freq. With 1.5 pF
Tuning Cap @ +25°C
1V
900
Input VSWR vs. Freq. With 1.5 pF
Tuning Cap @ -40°C
3.85V
0V
1V
2V
3V and 3.2V
2.5
35.00
25.00
2
20.00
VSWR
Attenuation
30.00
15.00
1.5
10.00
5.00
820
840
860
880
900
920
940
1
960
820
855
890
Frequency (MHz)
Input VSWR vs. Freq. With 1.5 pF
Tuning Cap @ +85°C
0V
1V
2V
3V
925
960
Frequency
Input VSWR vs. Freq. With 1.5 pF
Tuning Cap @ +25°C
3.7V
0V
2.5
2
2
1V
2V
3V
3.2V
VSWR
VSWR
2.5
1.5
1.5
1
820
855
890
925
960
Frequency
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.
1
820
855
890
Frequency
925
960