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| CHS2411-QDG RoHS COMPLIANT 23-26GHz Reflective SP4T Switch GaAs Monolithic Microwave IC In QFN package Description n The CHS2411 is a monolithic reflective SP4T Switch in K-Band. Positive supply voltage only is required. The circuit is manufactured with a standard PHEMT process : 0.25m gate length, via holes through the substrate, air bridges and electron beam gate lithography. The chip is delivered in a 24 Leads RoHS compliant QFN4x4 package. Main Features Low insertion loss : 4 dB max High Isolation : 32 dB min Fast switching time Low consumption High temperature range Positive supply voltage Standard SMD package : QFN 24L 4x4 n n n n Main Characteristics in QFN package Parameters Frequency range Insertion loss Isolation Return Loss Min 23 2.9 35 15 Typ Max 26 Unit GHz dB dB dB ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions ! Ref. : DSCHS2411QDG6174 - 23 Jun 06 1/10 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 K-band SP4T Electrical Characteristics in QFN package Full Temperature Range Symbol/Pins Frequency range Isolation Insertion loss Return loss Input power at 1 dBc@24GHz Switching speed Operating temperature range Vdd/5V Pi (i =1,2,3,4) Pi (i =1,2,3,4) Pi (i =1,2,3,4) Positive Supply Voltage Supply current Leakage Current OFF state Control Voltage (High state) ON state Control Voltage (Low State) 4 -40 18 Parameters Min 23 32 CHS2411-QDG Typ 35 2.9 15 23.5 80 25 5 5.5 1 5 0 Max 26 Unit GHz dB dB dB dBm ns 100 C V 8 5 2 mA uA V V Remarks : - By design the ports OUT1 and OUT2 are respectively symmetrical to ports OUT4 and OUT3. These performance has been obtained with the chip in QFN package mounted on the recommended boards (ref. 96148 & 95619) described in the document. The performances are highly dependent on this environment. Truth Table Control Pin P1 Low High High High P2 High Low High High P3 High High Low High P4 High High High Low IN to Out1 ON OFF OFF OFF Signal Path State IN to Out2 OFF ON OFF OFF IN to Out3 OFF OFF ON OFF IN to Out4 OFF OFF OFF ON Absolute Maximum Ratings (1) Symbol Vdd Pin Top Tch Parameters Positive supply voltage Maximum peak input power overdrive Operating temperature range Storage temperature range Values 6 26 -40 to +100 -55 to +125 Unit V dBm C C (1) Operation of this device above anyone of these parameters may cause permanent damage. Duration < 1s Ref. : DSCHS2411QDG6174 - 23 Jun 06 2/10 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 K-band SP4T CHS2411-QDG Typical QFN measurements on board 95619 (QFN plan) Typical Sij Parameters vs Frequency in QFN package plans (RF - OUT1 path) 0 -5 -10 -15 -20 -25 -30 -35 -40 -45 -50 10 12 14 16 18 20 22 24 26 28 30 Frequency (GHz) insertion loss OUT1 ON S21 dB isolation OUT1 OFF Typical Sij Parameters vs Frequency in QFN package plans (RF - OUT1 path) 0 -5 Return loss dB -10 -15 -20 -25 -30 10 12 14 16 18 20 22 24 26 28 30 Frequency (GHz) output return loss OUT1 ON input return loss OUT1 ON Ref. : DSCHS2411QDG6174 - 23 Jun 06 3/10 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 K-band SP4T QFN Outlines and Pin-out CHS2411-QDG Ref. : DSCHS2411QDG6174 - 23 Jun 06 4/10 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 K-band SP4T QFN Pin-out description Pin number 12, 17, 2, 17 9, 15, 20, 23, 4 6, 13 3, 5, 8, 10, 11, 14, 16, 19, 21, 22, 24 1,18 Pin name P1, P2, P3, P4 RF IN, Out1, Out2, Out3, Out4 5V GND Nc Symbol Name CHS2411-QDG Description Control Voltage port RF1 Input/Output ports Positive supply voltage Ground Not connected External Components and bias configuration (recommended) 18 17 16 15 14 13 12 12 19 20 21 22 23 1 2 3 4 5 6 11 10 9 8 7 Ref. : DSCHS2411QDG6174 - 23 Jun 06 5/10 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 K-band SP4T CHS2411-QDG Recommended Test Fixture (Ref. 96148) for measurements over Temperature Range 50Ohms resistor Ref. : DSCHS2411QDG6174 - 23 Jun 06 6/10 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 K-band SP4T CHS2411-QDG Recommended Test Fixture (Ref. 95619) for measurements in the package's plans with probes 50Ohms resistor Ref. : DSCHS2411QDG6174 - 23 Jun 06 7/10 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 K-band SP4T ESD sensitivity Norm MIL-STD-1686C ESD STM5.1-1998 Value HBM Class 1 (<1000V) HBM Class 0 (<250V) CHS2411-QDG Package Information Parameter Package body material Lead finish MSL Rating RoHS-compliant Low stress Injection Molded Plastic 100% matte Sn MSL1 Recommended surface mount package assembly (see UMS AN0017) For volume production the SMD type package can be treated as a standard surface mount component (please refer to the IPC/JEDEC J -STD-020C standard or equivalent). The assembly on the motherboard can be performed using a standard assembly process (e.g. stencil solder printing, standard pick-and-place machinery, and solder reflow oven). However, caution should be taken to perform a good and reliable contact over the whole pad area. MAXIMUM RECOMMENDED REFLOW PROFILE for LEADFREE SMT ASSEMBLY PRODUCTS 300 280 260 240 217 220 200 Temperature (C) 180 160 140 120 100 80 60 40 20 0 0 20 40 60 80 100 120 140 160 180 Time (s) 200 220 240 260 280 300 320 340 360 Maximum Ramp up rate : 3C / second 30s Max 150 255 Attention: The solder thickness after reflow should be typical 50m [2 mils] and the lateral alignment between the package and the motherboard should be within 50m [2 mils]. It is important for the performance of the product that the whole overlapping area between the motherboard and package pads is connected. Voids or other improper connections, in particular, between the ground pads on motherboard and package will lead to a deterioration of the RF performance and the heat dissipation. The latter effect can reduce drastically reliability and lifetime of the product. Ref. : DSCHS2411QDG6174 - 23 Jun 06 8/10 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 K-band SP4T CHS2411-QDG Ref. : DSCHS2411QDG6174 - 23 Jun 06 9/10 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 K-band SP4T CHS2411-QDG Ordering Information 24L-QFN4x4 Lead Free Package : Stick: XY=20 Tape and reel: XY=21 CHS2411-QDG/XY 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. : DSCHS2411QDG6174 - 23 Jun 06 10/10 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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