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| CHM2179B RoHS COMPLIANT W-band Mixer GaAs Monolithic Microwave IC Description The CHM2179B is a single channel mixer. The structure is a balanced mixer based on a six-quarter wave ring. The non-linear devices are high quality Schottky diodes providing low conversion loss a very low nd 1/f noise. This circuit is manufactured with the BESMMIC process: 1 m Schottky diode device, air bridges, via holes through the substrate, stepper lithography. It is available in chip form. LO RF IF Main Features | W-band LO and RF frequency range | Low conversion loss | IF from DC to 100MHz | High LO/RF isolation | High LO/AM noise rejection | Very low IF noise | Low LO input power | Automatic assembly oriented | BCB layer protection | Small chip size: 1.53 x 1.17 x 0.10 mm Main Characteristics Tamb. = +25C Symbol F_lo, F_rf F_if Lc I_lo/rf N_if Parameter LO, RF frequency IF frequency range Conversion loss LO/RF isolation IF noise @ 100kHz Min 76 [DC;100] Typ 76.5 Max 77 Unit GHz MHz 8 22 -162 dB dB dBm/Hz Ref. : DSCHM2179B6013 - 13 Jan 06 1/9 Specifications subject to change without notice United Monolithic Semiconductors S.A.S. 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 CHM2179B W-band Mixer ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions ! Ref. : DSCHM2179B6013 - 13 Jan 06 2/9 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 W-band Mixer Electrical Characteristics CHM2179B Full operating temperature range, used according to section "Typical assembly and bias configuration" Symbol F_lo, F_rf F_if Lc P_lo P_RF_1dB VSWR_lo VSWR_rf IMP_if I_lo/rf R_lo_am NF Parameter LO, RF frequency IF frequency range Conversion loss LO input power RF input power at 1 dB LO port VSWR (50) RF port VSWR (50) IF load impedance (1) LO/RF isolation LO AM noise rejection (SSB) Noise figure for IF=1kHz (2) Noise figure for IF=10kHz (2) Noise figure for IF=100kHz (2) Noise figure for IF=200kHz (2) +V +I Top Positive supply voltage (3) Positive supply current (3) Operating temperature range -40 16 20 Min 76 [DC;100] Typ Max 77 Unit GHz MHz 5 3 -3 8 5.5 0 2:1 2:1 200 22 27 35 29 21.5 18 4.5 1.5 10 8 dB dBm dBm 2.5:1 2.5:1 dB dB 40 34 26.5 23 dB dB dB dB V 2.5 +100 mA C (1) The IF optimum load for conversion loss is 200. For minimum noise figure this load can be lower, the best results have been obtained on 50. (2) Measured on 200 IF impedance. (3) An external resistor controls the bias current (see section "Typical Assembly and Bias Configuration") Absolute Maximum Ratings (1) Symbol +V +I P_lo P_rf_cw Tstg Supply voltage Supply current Maximum peak input power overdrive at LO port (2) Maximum input power at RF port (3) Storage temperature range Parameter Values 6 2.5 10 3 -55 to +125 Unit V mA dBm dBm C (1) Operation of this device above anyone of these parameters may cause permanent damage. (2) Duration < 1s Ref. : DSCHM2179B6013 - 13 Jan 06 3/9 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 CHM2179B (3) Continuous wave mode. W-band Mixer Ref. : DSCHM2179B6013 - 13 Jan 06 4/9 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 W-band Mixer Chip Mechanical Data and Pin References CHM2179B 3 2 1 4 5 6 11 10 9 8 7 Unit = m External chip size = 1530 x 1170 Chip thickness = 100 +/- 10 HF Pads (2,5) = 105 X 86 (BCB opening) DC/IF Pads = 86 x 83 (BCB opening) Pin number 1,3,4,6 2 5 7 8 9 10 11 LO RF GND IF C_ext +V Pin name Description Ground: should not be bonded. If required, please ask for more information. LO input RF input Ground (optional) Not Connected IF output Bias decoupling Positive supply voltage Ref. : DSCHM2179B6013 - 13 Jan 06 5/9 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 CHM2179B Typical Bias and IF Configuration W-band Mixer Several external configurations are possible for bias and IF. The objective is to give flexibility for the integration. As this component is mainly dedicated to low IF use, there are several possibilities for interfacing with low noise IF amplifier. The optimum IF load for conversion loss is 200, however depending on the IF amplifier noise characteristic this load can be modified in order to optimise the noise figure. A series capacitor, between IF output and the load is recommended. Due to high sensitivity to electrical discharges an integrated resistance is used and two ports are available for biasing. One is for the connection of a decoupling capacitor (C_ext) and the other one is for the supply voltage connection through an external series resistance (+V port). However, in order to keep the compatibility with the CHM2179, only the "C_ext" port can be used. +V C_bias R_bias1 C_ext +V 1k R_load_IF +V R_load_IF C_IF IF C_bias R_bias2 C_IF IF C_ext +V 1k LO RF LO RF Recommended external bias and IFconfiguration Other possible configuration (Compatible with the previous version) The recommended values for external components are: C_bias R_bias1 R_bias2 R_load_IF R_bias*C >> 1/F_IF 2.9k for 1mA current consumption (V = 4.5V, typical LO power) R_bias2 = R_bias1 + 1k From 50 to 200 Notes:: 1. R_bias = R_bias1 + 1k when "+V" port is used, otherwize R_bias = R_bias2 2. R_bias can be adjusted if necessary; This allows to optimise the performances when some parameters are different from recommended ones (Supply voltage, LO power ...). However maximum ratings for the current have to be taken into account. 3. A series capacitor at IF outputs is recommended for DC decoupling. Ref. : DSCHM2179B6013 - 13 Jan 06 6/9 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 W-band Mixer Typical Assembly and RF Configuration CHM2179B In order to use acceptable wire bonding length, compatible with automatic pick and place and wire bonding equipment, an external matching network is proposed on low dielectric constant substrate. Substrate : RO.3003 r=3 H=127 m Substrate : RO.3003 r=3 H=127 m Example of integration using low dielectric constant substrate : Er=3, heigh=0.127mm (dimensions are in m) W=500 L=985 W=250 L=180 W1=330 W2=200 L=120 W=330 L=125 W=200 L=729 W1=200 W2=330 L=150 W=330 L=200 W=330 L=200 W1=330 W2=200 L=200 W=250 L=300 W1=200 W2=330 L=200 W=330 L=225 Ref. : DSCHM2179B6013 - 13 Jan 06 7/9 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 CHM2179B Unit =m W-band Mixer Ref. : DSCHM2179B6013 - 13 Jan 06 8/9 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 W-band Mixer CHM2179B Ordering Information Chip form : CHM2179B98F/00 Information furnished is believed to be accurate and reliable. However United Monolithic Semiconductors S.A.S. assumes no responsability 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. : DSCHM2179B6013 - 13 Jan 06 9/9 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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