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| CHR2295 24-30GHz Integrated Down Converter GaAs Monolithic Microwave IC Description The CHR2295 is a multifunction chip which integrates a LO time two multiplier, a balanced cold FET mixer, and a RF LNA. It is designed for a wide range of applications, typically commercial communication systems. The backside of the chip is both RF and DC grounds. This helps simplify the assembly process. The circuit is manufactured with a PM-HEMT process, 0.25m gate length, via holes through the substrate, air bridges and electron beam gate lithography. It is available in chip form. LO Q GM GB VDM VDL GX VGA RF 12.00 8.00 4.00 0.00 (dB) I Main Features * * * * * * * Broadband performances : 24-30GHz 11 dB conversion gain 3.5.0dB noise figure 10dBm LO input power -10dBm RF input power (1dB gain comp.) Low DC power consumption, 120mA@3.5V Chip size : 2.49 X 1.97 X 0.10 mm Gc_channel_sup_rf+ Gc_channel inf_rf- Gc_channel_inf_rf+ Gc_channel_sup_rf- -4.00 -8.00 -12.00 -16.00 -20.00 -24.00 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31.5 32.5 2XLO Frequency (GHz) Conversion Gain & Image suppression @ IF=1.5GHz (including test board losses) Main Characteristics Tamb. = 25C Parameter Min Typ Max Unit FRF FLO FIF Gc RF frequency range LO frequency range IF frequency range Conversion gain 24 12 0.25 11 30 15 1.5 GHz GHz GHz dB ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions ! Ref. : DSCHR22951201 -20-July-01 1/6 Specifications subject to change without notice Route Departementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 24-30GHz MFC Down Converter Electrical Characteristics for Broadband Operation Tamb = +25C, Vd = 3.5V Symbol FRF FLO FIF Gc NF PLO Img Sup P1dB CHR2295 Parameter RF frequency range LO frequency range IF frequency range Conversion gain (1) Noise Figure LO Input power Image Suppression Input power at 1dB gain compression Min 24 12 0.25 Typ Max 30 15 1.5 Unit GHz GHz GHz dB dB dBm dBc dBm 11 3.5 +10 17 -10 2.0:1 3.0:1 120 LO VSWR Input LO VSWR (1) RF VSWR Input RF VSWR (1) Id Bias current (2) mA (1) On Wafer measurements (2) Current source biasing network is recommended. Optimum performances for Idm= 50mA and Idl= 70mA Absolute Maximum Ratings Tamb. = 25C (1) Symbol Vd Id Vg Pin Ta Tstg Drain bias voltage Drain bias current Gate bias voltage Maximum peak input power overdrive (2) Operating temperature range Storage temperature range Parameter Values 4.0 200 -2.0 to +0.4 +15 -40 to +85 -55 to +155 Unit V mA V dBm C C (1) Operation of this device above anyone of these parameters may cause permanent damage. (2) Duration < 1s. Ref. : : DSCHR22951201 -20-July-01 2/6 Specifications subject to change without notice Route Departementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 24-30GHz MFC Down Converter Typical On-wafer Measurements CHR2295 Bias Conditions : Vdm= Vdl= 3.5 V, Vgm= -0.9V, Vgb= -0.3V, Vgx= -0.7V, Vga= -0.2V 10 8 6 4 2 0 -2 -4 -6 -8 -10 -12 -14 -20 -18 -16 -14 -12 -10 -8 -6 -4 Input RF power (dBm) IF power_I (dBm) IF power_Q (dBm) Freq_RF= 24.6GHz Freq_LO= 12.05GHz Conv_gain I (dB) Conv_gain Q (dB) 10 8 6 4 2 0 -2 -4 -6 -8 -10 -12 -14 -20 -18 -16 -14 -12 -10 -8 -6 -4 Input RF power (dBm) Input RF compression by channel Ref. : : DSCHR22951201 -20-July-01 3/6 Specifications subject to change without notice Freq_RF= 28GHz Freq_LO= 13.75GHz IF power_I (dBm) IF power_Q (dBm) Conv_gain I (dB) Conv_gain Q (dB) Route Departementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 24-30GHz MFC Down Converter Typical On-board Measurements Bias Conditions : Vdm= Vdl= 3.5 V, Vgm= Vgx= -0.9V, Vgb= Vga= -0.3V CHR2295 All these measurements include the losses from the test board (about 1dB on the conversion gain and 0.5dB on the noise figure). 12.00 Conversion Gain & Image suppression (dB) 8.00 4.00 0.00 -4.00 IF=1GHz -8.00 -12.00 -16.00 -20.00 IF=2GHz IF=1.5GHz IF=1GHz IF=2GHz IF=1.5GHz -24.00 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 31.5 32.5 2XLO Frequency (GHz) Conversion gain & Image suppression versus IF frequency 10 9 8 Noise factor (dB) Channel_sup_IF_1GHz Channel_sup_IF_1.5GHz Channel_sup_IF_2GHz Channel_inf_IF_1GHz Channel_inf_IF_1.5GHz Channel_inf_IF_2GHz 7 6 5 4 3 2 1 0 24.5 25 25.5 26 26.5 27 27.5 28 28.5 29 29.5 RF Frequency (GHz) Noise figure supradyne & infradyne versus IF frequency Ref. : : DSCHR22951201 -20-July-01 4/6 Specifications subject to change without notice Route Departementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 24-30GHz MFC Down Converter Chip Assembly and Mechanical Data CHR2295 LO IN To Vgm DC Gate Supply To Vgb DC Gate Supply Q OUT To Vdm,Vdl DC Drain Supply I OUT To Vgx DC Gate Supply To Vga DC Gate Supply RF IN Note : Supply feed should be capacitively bypassed. 25m diameter gold wire is recommended Bonding pad positions ( Chip thickness : 100m. All dimensions are in micrometers ) Ref. : : DSCHR22951201 -20-July-01 5/6 Specifications subject to change without notice Route Departementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 CHR2295 Ordering Information Chip form : CHR2295-99F/00 Information furnished is believed to be accurate and reliable. However United Monolithic Semiconductors S.A.S. assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of United Monolithic Semiconductors S.A.S.. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. United Monolithic Semiconductors S.A.S. products are not authorised for use as critical components in life support devices or systems without express written approval from United Monolithic Semiconductors S.A.S. Ref. : DSCHR22951201 -20-July-01 6/6 Specifications subject to change without notice Route Departementale 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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