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CHA3513 Schematic ( PDF Datasheet ) - United Monolithic Semiconductors

Teilenummer CHA3513
Beschreibung GaAs Monolithic Microwave IC
Hersteller United Monolithic Semiconductors
Logo United Monolithic Semiconductors Logo 




Gesamt 10 Seiten
CHA3513 Datasheet, Funktion
CHA3513
RoHS COMPLIANT
6-18GHz 3 bit Digital Variable Amplifier
GaAs Monolithic Microwave IC
Description
The CHA3513 is composed by a three steps
digital attenuator followed by a three stage
travelling amplifier and a Single Pole Single
Through (SPST) switch. It is designed for
defense applications. The backside of the
chip is both RF and DC grounded. This helps
to simplify the assembly process.
RF
IN
The circuit is manufactured with a pHEMT
process, 0.25µm gate length, via holes
through the substrate, air bridges and
electron beam gate lithography.
It is available in chip form.
10A 5A 10A1 B C F G
10dB 5dB 10dB
RF
OUT
10B
5B 10B1 A D E
H
Typical on wafer Measurements
Gain versus attenuation states
Main Features
Performances: 6-18GHz
20dBm saturated output power
19 dB gain
3 bit attenuator for 26dB range
DC power consumption, 300mA @ 4.5V
Chip size: 6.68 x 2.46 x 0.1mm
0dB state
5dB state
10dB state
Main Characteristics
Tamb. = 25°C
Symbol
Parameter
Min Typ Max Unit
Fop Operating frequency range 6
18 GHz
G Small signal gain @ Attenuator state 0dB
19 dB
Psat
Saturated Output power @ Attenuator state 0dB
20
dBm
ATT dyn
Attenuator range with 3bit
25 dB
ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions !
Ref. : DSCHA3513-8144 - 23 May 08
1/10
Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Route Départementale 128 - B.P.46 - 91401 Orsay Cedex France
Tel. : +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09






CHA3513 Datasheet, Funktion
CHA3513
6-18GHz Digital Variable Amplifier
Typical test fixture Measurements @ 25°C
Bias conditions: Vd = 4.5V, Vg tuned for Id = 300mA
Linear Gain versus attenuation states
25
20
15
10
5
0
-5
-10
-15
-20
-25
-30
-35
-40 Switch OFF
-45
-50
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Frequency GHz
Input Return Loss versus attenuation states
0
-5
-10
-15
-20
-25
-30
-35
-40
-45
-50
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Frequency GHz
Ref. : DSCHA3513-8144 - 23 May 08
6/10 Specifications subject to change without notice
Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09

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