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PDF CHR3894-98F Data sheet ( Hoja de datos )

Número de pieza CHR3894-98F
Descripción Integrated Down Converter
Fabricantes United Monolithic Semiconductors 
Logotipo United Monolithic Semiconductors Logotipo



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CHR3894-98F
RoHS COMPLIANT
37-40GHz Integrated Down Converter
GaAs Monolithic Microwave IC
Description
The CHR3894-98F is a multifunction
monolithic receiver, which integrates a
balanced cold fet mixer, a LO chain with
buffers associated to a time two multiplier,
and a RF low noise amplifier including gain
control.
It is designed for a wide range of
applications, from military to commercial
communication systems.
The circuit is manufactured with a pHEMT
process, 0.15µm gate length, via holes
through the substrate, air bridges and
electron beam gate lithography.
It is available in chip form.
IF_I
IF_Q
LO IN
X2
RF IN
VGX
VD
VD1
VGL
GC
Main Features
Broadband performances: 37-40GHz
13dB Conversion gain
16dBc Image Rejection
2dBm IIP3 without attenuation (GC=-2V)
8dB Gain Control range
4.5dB Noise Figure for IF>0.1GHz
0dBm LO input Power
DC bias: Vd=4V @ Id=250mA
Chip size 2.6x2.7x0.1mm
20
18
16
14
12
10
8
6
4
2
0
35
Conversion gain (USB mode) @ IF 2GHz
-2V -0.4V -0.2V 0V +0.6V
36 37 38 39 40 41 42 43
RF Frequency (GHz)
44
Main Characteristics
Tamb.= +25°C
Symbol
Parameter
FRF RF frequency range
FOL LO frequency range
FIF IF frequency range
G Conversion gain without attenuation
Min Typ Max Unit
37 40 GHz
17.5
21.0 GHz
DC 3.5 GHz
13 dB
Ref. : DSCHR38941192 - 11 Jul 11
1/12 Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Route Départementale 128 - BP46 - 91401 Orsay Cedex France
Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
Free Datasheet http://www.datasheet4u.com/

1 page




CHR3894-98F pdf
37-40GHz Integrated Down Converter
CHR3894-98F
Typical Measured Performances
Tamb.= +25°C, VD = VD1 =+4V, VGL = -0.15V, VGX= -0.9V, P_LO = 0dBm (IDt = 250mA)
Noise figure versus RF frequency at IF 2GHz (USB & LSB modes)
without attenuation: GC= -2V
10
9
8
7
6
5
4
3
2
1
USB mode
LSB mode
0
35 36 37 38 39 40 41 42
RF Frequency (GHz)
43
10
9
8
7
6
5
4
3
2
1
0
35
Noise figure versus RF frequency and gain control voltage
(IF 2GHz, USB mode)
-2V -0.4V -0.2V 0V +0.6V
36 37 38 39 40 41 42
RF Frequency (GHz)
43
Ref. : DSCHR38941192 - 11 Jul 11
5/12
Route Départementale 128, BP46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
Specifications subject to change without notice
Free Datasheet http://www.datasheet4u.com/

5 Page





CHR3894-98F arduino
37-40GHz Integrated Down Converter
DC Schematic
LNA: 4V, 125mA
VD1
CHR3894-98F
1.9k
RF
151.6k
10mA
15
15mA
34
43mA
2753mA
576
150
444
90
1k
VGL# -0.2V
2k
x4
1k
1k
GC
2k
5k
x4
LO chain: 4V, 125mA
VD
45mA
25mA @Pin=0dBm
70
50mA
LO
800
26
18
Mixer Gate
515
515
700
30
2k
185
16
200
x2
VGX=-0.9V
Ref. : DSCHR38941192 - 11 Jul 11
11/12
Route Départementale 128, BP46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
Specifications subject to change without notice
Free Datasheet http://www.datasheet4u.com/

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