CHR2295 24-30GHz Integrated Down Converter GaAs Monolithic Microwave IC Description LO 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, 0.25µm gate length, via holes through the substrate, air bridges and electron beam gate lithography. It is available in chip form. Q GM GB VDM VDL GX VGA I RF Main Features 12.00 Broadband performances : 24-30GHz 8.00 11 dB conversion gain 4.00 3.5.0dB noise figure 0.00 10dBm LO input power (dB) • • • • • • • Gc_channel_sup_rf+ Gc_channel_inf_rf+ Gc_channel inf_rf- Gc_channel_sup_rf- -4.00 -8.00 -10dBm RF input power (1dB gain comp.) Low DC power consumption, [email protected] -12.00 -16.00 Chip size : 2.49 X 1.97 X 0.10 mm -20.00 -24.00 22.5 23.5 24.5 25.5 26.5 27.5 28.5 29.5 30.5 2XLO Frequency (GHz) Conversion Gain & Image suppression @ IF=1.5GHz (including test board losses) Main Characteristics Tamb. = 25°C Parameter Min Typ Max Unit FRF RF frequency range 24 30 GHz FLO LO frequency range 12 15 GHz FIF IF frequency range 0.25 1.5 GHz Gc Conversion gain 11 dB ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions ! Ref. : DSCHR22951201 -20-July-01 1/6 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 Specifications subject to change without notice 31.5 32.5 24-30GHz MFC Down Converter CHR2295 Electrical Characteristics for Broadband Operation Tamb = +25°C, Vd = 3.5V Symbol Parameter Min Typ Max Unit FRF RF frequency range 24 30 GHz FLO LO frequency range 12 15 GHz FIF IF frequency range 0.25 1.5 GHz Gc Conversion gain (1) 11 dB NF Noise Figure 3.5 dB PLO LO Input power +10 dBm Image Suppression 17 dBc Input power at 1dB gain compression -10 dBm Img Sup P1dB LO VSWR Input LO VSWR (1) 2.0:1 RF VSWR Input RF VSWR (1) 3.0:1 Id Bias current (2) 120 mA (1) On Wafer measurements (2) Current source biasing network is recommended. Optimum performances for Idm= 50mA and Idl= 70mA Absolute Maximum Ratings Tamb. = 25°C (1) Symbol Parameter Values Unit Vd Drain bias voltage 4.0 V Id Drain bias current 200 mA Vg Gate bias voltage -2.0 to +0.4 V Pin Maximum peak input power overdrive (2) +15 dBm Ta Operating temperature range -40 to +85 °C Storage temperature range -55 to +155 °C Tstg (1) Operation of this device above anyone of these parameters may cause permanent damage. (2) Duration < 1s. Ref. : : DSCHR22951201 -20-July-01 2/6 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 Specifications subject to change without notice 24-30GHz MFC Down Converter CHR2295 Typical On-wafer Measurements 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 Freq_RF= 24.6GHz Freq_LO= 12.05GHz -8 -10 -12 IF power_I (dBm) Conv_gain I (dB) IF power_Q (dBm) Conv_gain Q (dB) -14 -20 -18 -16 -14 -12 -10 -8 -6 -4 Input RF power (dBm) 10 8 6 4 2 0 -2 -4 -6 Freq_RF= 28GHz Freq_LO= 13.75GHz -8 -10 -12 IF power_I (dBm) Conv_gain I (dB) IF power_Q (dBm) Conv_gain Q (dB) -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 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 Specifications subject to change without notice 24-30GHz MFC Down Converter CHR2295 Typical On-board Measurements Bias Conditions : Vdm= Vdl= 3.5 V, Vgm= Vgx= -0.9V, Vgb= Vga= -0.3V All these measurements include the losses from the test board (about 1dB on the conversion gain and 0.5dB on the noise figure). Conversion Gain & Image suppression (dB) 12.00 8.00 4.00 0.00 -4.00 IF=1GHz -8.00 IF=2GHz IF=1.5GHz -12.00 -16.00 IF=1GHz IF=2GHz -20.00 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 Channel_sup_IF_1GHz Channel_sup_IF_1.5GHz Channel_sup_IF_2GHz Noise factor (dB) 8 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 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 Specifications subject to change without notice 24-30GHz MFC Down Converter CHR2295 Chip Assembly and Mechanical Data LO IN Q OUT To Vgm DC Gate Supply To Vgb DC Gate Supply 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. 25µm diameter gold wire is recommended Bonding pad positions ( Chip thickness : 100µm. All dimensions are in micrometers ) Ref. : : DSCHR22951201 -20-July-01 5/6 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 Specifications subject to change without notice 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 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 Specifications subject to change without notice