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Электронный компонент: AT90-1413TR

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Digital Attenuator, 15 dB, 4-Bit, TTL
Driver, DC - 4.0 GHz
AT90
-
1413
CSP-1
V 1.00
Features
n
Attenuation: 1 dB Steps to 15 dB
n
Single Positive Supply
n
Contains Internal DC to DC Converter
n
Small Footprint, JEDEC Package
n
Integral TTL Driver
n
50 Ohm Impedance
n
Test Boards Available
n
Tape and Reel Packaging Available
Description
M/A-COM's AT90-1413 is a GaAs FET 4-Bit digital
attenuator with integral driver. Step size is 1 dB providing
a 15 dB attenuation range. This device is in an FQFP-N
plastic surface mount package. The AT90-1413 is suited
for single supply applications where accuracy, fast speed,
low power consumption and low costs are required.
Electrical Specifications: T
A
= 25C
Parameter
Test Conditions
Frequency
Units
Min.
Typ.
Max.
Insertion Loss
--
DC-2.5 GHz
DC-4.0 GHz
dB
dB
--
--
2.0
2.5
2.5
3.0
Attenuation
Accuracy
Individual Bits or
Combination of Bits
DC-2.5 GHz
DC-4.0 GHz
dB
dB
--
--
--
--
(0.3+4% of atten setting)
(0.3+6% of atten setting)
VSWR
Full Attenuation Range
DC-2.5 GHz
DC-4.0 GHz
Ratio
Ratio
--
--
1.5:1
1.8:1
1.8:1
2.0:1
Switching Speed
50% Cntl to 90%/10% RF
10% to 90% or 90% to 10%
--
--
nS
nS
--
--
75
20
150
50
1 dB Compression
--
50 MHz
0.5-4.0 GHz
dB
dB
--
--
+21
+29
--
--
Input IP
3
Two-tone Inputs up to +5 dBm
50 MHz
0.5-4.0 GHz
dB
dB
--
--
+35
+48
--
--
+Vcc
--
--
V
4.75
5.0
5.25
Logic "0"
Sink Current is 20 A max.
--
V
0.0
--
0.8
Logic "1"
Sink Current is 20 A max.
--
V
2.0
--
5.0
Icc
Vcc min to max, Logic "0" or "1"
--
mA
--
6
10
Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 4.0 GHz
AT90-1413
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.
V 1.00
2
Recommended PCB Layout
7
Pin Configuration
Pin No.
Function
Pin No.
Function
1
GND
17
N/C
2
C8
18
N/C
3
C4
19
+Vcc
2
4
C2
20
N/C
5
C1
21
Cp
4
6
GND
22
N/C
7
GND
23
Cp
4
8
N/C
24
N/C
9
N/C
25
-Vee
3
10
N/C
1
26
GND
11
GND
27
RF2
12
RF1
28
GND
13
GND
29
N/C
1
14
N/C
30
-Vee
3,5
15
N/C
31
N/C
16
N/C
32
+Vcc
2,6
7. Application Note C2083 is available on line at
www.macom.com
1. Pins 10 & 29 must be isolated.
2. Pin 19 must be connected to Pin 32.
3. Pin 25 must connect to Pin 30.
4. A .01 F cap must be connected between Pins 21 and 23.
5. -Vee is produced internally and requires a .1 F cap to
GND
6. +Vcc requires a .1 F cap to GND.
Truth Table
C8
C4
C2
C1
Attenuation
0
0
0
0
Loss, Reference
0
0
0
1
1.0 dB
0
0
1
0
2.0 dB
0
1
0
0
4.0 dB
1
0
0
0
8.0 dB
1
1
1
1
15.0 dB
0 = TTL Low; 1 = TTL High
Absolute Maximum Ratings
8
Parameter
Absolute Maximum
Max. Input Power

0.05 GHz

0.5 - 4.0 GHz
+27 dBm
+34 dBm
+Vcc
+5.5V
Logic Voltages
9
-0.5 to +Vcc + 0.5V
Operating Temperature
-40C to +85C
Storage Temperature
-65C to +125C
8. Operation of this device above any one of these
parameters may cause permanent damange.
9. Standard CMOS TTL interface, latch-up will occur if logic
signal is applied prior to power supply.
Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 4.0 GHz
AT90-1413
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.
V 1.00
3
Typical Performance Curves
VSWR @ Insertion Loss
Insertion Loss
Attenuation Error, 1 dB Bit
Attenuation Error, 2 dB Bit
Attenuation Error, 4 dB Bit
Attenuation Error, 8 dB Bit
1.00
1.20
1.40
1.60
0
500
1000
1500
2000
2500
3000
3500
4000
Frequency (MHz)
VSWR
RF In
RF Out
-0.30
-0.20
-0.10
0.00
0.10
0.20
0.30
0
500
1000
1500
2000
2500
3000
3500
4000
Frequency (MHz)
Attenuation (dB)
-0.30
-0.20
-0.10
0.00
0.10
0.20
0.30
0
500
1000
1500
2000
2500
3000
3500
4000
Frequency (MHz)
Attenuation (dB)
-0.20
0.00
0.20
0.40
0.60
0
500
1000
1500
2000
2500
3000
3500
4000
Frequency (MHz)
Attenuation (dB)
-0.60
-0.40
-0.20
0.00
0.20
0
500
1000
1500
2000
2500
3000
3500
4000
Frequency (MHz)
Attenuation (dB)
1.00
1.50
2.00
2.50
3.00
0
500
1000
1500
2000
2500
3000
3500
4000
Frequency (MHz)
Attenuation (dB)
Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 4.0 GHz
AT90-1413
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.
V 1.00
Typical Performance Curves
4
VSWR, 1 dB Bit
Attenuation Error, Max. Attenuation
VSWR, 2 dB Bit
VSWR, 4 dB Bit
VSWR, 8 dB Bit
VSWR, Max. Attenuation
1.00
1.20
1.40
1.60
0
500
1000
1500
2000
2500
3000
3500
4000
Frequency (MHz)
VSWR
RF In
RF Out
1.00
1.20
1.40
1.60
0
500
1000
1500
2000
2500
3000
3500
4000
Frequency (MHz)
VSWR
RF In
RF Out
1.00
1.20
1.40
1.60
0
500
1000
1500
2000
2500
3000
3500
4000
Frequency (MHz)
VSWR
RF In
RF Out
1.00
1.20
1.40
1.60
0
500
1000
1500
2000
2500
3000
3500
4000
Frequency (MHz)
VSWR
RF In
RF Out
1.00
1.20
1.40
1.60
0
500
1000 1500
2000
2500
3000
3500
4000
Frequency (MHz)
VSWR
RF In
RF Out
-0.40
-0.20
0.00
0.20
0.40
0
500
1000
1500
2000
2500
3000
3500
4000
Frequency (MHz)
Attenuation (dB)
Digital Attenuator, 15 dB, 4-Bit, TTL Driver, DC - 4.0 GHz
AT90-1413
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.
V 1.00
5
Ordering Information
Part Number
Package
AT90-1413
Bulk Packaging
AT90-1413TR
Tape and Reel (1K Reel)
AT90-1413-TB
Units Mounted on Test Board