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PDF CHR3894-QEG Data sheet ( Hoja de datos )

Número de pieza CHR3894-QEG
Descripción Integrated Down Converter
Fabricantes United Monolithic Semiconductors 
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CHR3894-QEG
37-40GHz Integrated Down Converter
GaAs Monolithic Microwave IC in SMD leadless package
Description
The CHR3894-QEG 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 supplied in RoHS compliant SMD
package.
UMS
R3894
YYWW
Main Features
■ Broadband performances: 37-40GHz
■ 13dB Conversion gain
■ 15dBc Image Rejection
■ 2dBm IIP3 without attenuation (GC=-2V)
■ 8dB Gain Control range
■ 4dB Noise Figure for IF>0.1GHz
■ 0dBm LO input Power
■ DC bias: Vd=4V @ Id=250mA
■ 24L-QFN4x5
■ MSL1
20
18
16
14
12
10
8
6
4
2
0
35
Conversion gain (USB mode) @ IF 2GHz
-2V
36
-0.4V
-0.2V
0V
37 38 39
RF Frequency (GHz)
+0.6V
40
41
Main Electrical Characteristics
Tamb.= +25°C
Symbol
Parameter
FRF RF frequency range
FLO LO frequency range
FIF IF frequency range
G Conversion gain without attenuation
Min Typ Max Unit
37 40 GHz
17.5
21.0 dB
DC 3.5 dB
10 13
dBm
Ref. : DSCHR3894-QEG2201 -19 jul 12
1/14 Specifications subject to change without notice
United Monolithic Semiconductors S.A.S.
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
Free Datasheet http://www.datasheet4u.com/

1 page




CHR3894-QEG pdf
37-40GHz Integrated Down Converter
CHR3894-QEG
Typical Board Measurements
Tamb.= +25°C, VD = VD1 =+4V, VGL = -0.1V, VGX = -0.9V, P_LO = 0dBm (IDt = 250mA)
These values are representative of onboard measurements as defined on the drawing in
paragraph "Evaluation mother board". Data given in the package access planes.
Conversion Gain versus RF & IF frequency (USB & LSB modes)
without attenuation: GC= -2V
20
18
16
14
12
10
8
6
4
LSB- 2GHz
USB- 2GHz
2
LSB- 3.5GHz
USB- 3.5GHz
0
35 36 37 38 39 40
RF Frequency (GHz)
41
Conversion Gain versus RF frequency and gain control voltage
(IF 2GHz, USB mode)
20
18
16
14
12
10
8
6
4
2 -2V -0.4V -0.2V 0V +0.6V
0
35 36 37 38 39 40
RF Frequency (GHz)
41
Ref. : DSCHR3894-QEG2201 -19 jul 12
5/14 Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
Free Datasheet http://www.datasheet4u.com/

5 Page





CHR3894-QEG arduino
37-40GHz Integrated Down Converter
CHR3894-QEG
Evaluation mother board
Compatible with the proposed footprint.
Based on typically Ro4003 / 8mils or equivalent.
Using a micro-strip to coplanar transition to access the package.
Recommended for the implementation of this product on a module board.
Decoupling capacitors of 10nF ±10% are recommended for all DC accesses.
See application note AN0017 for details.
Hybrid coupler 90° for 2-4GHz.
IF_Q
IF_I
RF IN
LO IN
Ref. : DSCHR3894-QEG2201 -19 jul 12
11/14
Specifications subject to change without notice
Bât. Charmille - Parc SILIC - 10, Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France
Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34
Free Datasheet http://www.datasheet4u.com/

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