CHT4694-QAG RoHS COMPLIANT 25- 40GHz ATTENUATOR GaAs Monolithic Microwave IC in SMD leadless package Description The CHT4694-QAG is a variable 25-40GHz attenuator designed for a wide range of applications, from military to commercial communication systems. The circuit is manufactured with a MESFET process, 0.7µm gate length, via holes through the substrate and air bridges. UMS T4694 YYWW It is supplied in lead-free package. Attenuation versus frequency & V1, V2 Main Features ■ Broadband performance: 25-40GHz ■ 22dBm typical input 1dB compression point (any attenuation) ■ 22dB dynamic range ■ DC bias: -5V<V1<0V; -5V<V2<0V ■ Single bias with V1=V2 ■ Package type: 16L-QFN3x3 ■ MSL 1 Main Characteristics Tamb = +25°C Symbol Parameter Min Typ Max Unit Fin Input frequency range 25 40 GHz Min Att. |S21| (V1=-5V;V2=-5V) 4 dB Max Att. |S21| (V1=0V;V2=0V) 26 dB Pin1dB Input 1dB compression point (any 20 22 dBm attenuation) ESD Protections: Electrostatic discharge sensitive device observe handling precautions! Ref. : DSCHT4694QAG0211 - 30 Jul 2010 1/14 Specifications subject to change without notice United Monolithic Semiconductors S.A.S. Route Départementale 128 - BP46 - 91401 Orsay Cedex France Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09 25-40GHz Attenuator CHT4694-QAG Electrical Characteristics Tamb = +25°C Symbol Fin Min Att. Max Att. RLin Parameter Min Input frequency range Typ 25 Max Unit 40 GHz |S21| (V1=-5V;V2=-5V) (25 to 34GHz) 4 6 dB |S21| (V1=-5V;V2=-5V) (34 to 40GHz) 5 6.5 dB |S21| (V1=0V;V2=0V) 23 26 dB Input return loss (any Att) (25 to 34GHz) -10 -8 dB Input return loss (any Att) (34 to 40GHz) -8 -7 dB RLout Output return loss (any Att) -6 -3.5 dB Pin1dB Input 1dB compression point (any Att) 20 22 dBm I IP3 Input 3rd order Intercept Point (any Att) 25 30 dBm (Pin DCL > 0dBm) V1,V2 Voltage control range -5 0 V These values are representative of onboard measurements as defined on the drawing in paragraph “Evaluation mother board”. Absolute Maximum Ratings (1) Tamb = +25°C Symbol Parameter Values Unit V1 V1 control voltage -6V to +0.6V V V2 V2 control voltage -6V to +0.6V V Pin RF input power 30 dBm Ta Operating temperature range (reference on ground -40 to +85 °C paddle) Tstg Storage temperature range -55 to +155 °C (1) Operation of this device above anyone of these parameters may cause permanent damage. Typical Bias Conditions Tamb = +25°C Symbol Pin No. Parameter Values Unit V1 6 V1 control voltage -5 to 0 V V2 7 V2 control voltage -5 to 0 V Ref. : DSCHT4694QAG0211 - 30 Jul 2010 2/14 Route Départementale 128, BP46 - 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 25-40GHz Attenuator CHT4694-QAG Typical Package Sij parameters Tamb = +25°C, V1 = -5V & V2= -5V – Minimum attenuat ion Freq (GHz) dB(S11) P(S11) (°) dB(S12) 20 -13,5 132 -2,3 -95,7 -2,3 -95,7 -13,1 -139,3 21 -15,4 106,1 -2,3 -120,3 -2,3 -120,2 -13,6 -155,6 22 -19,2 71,9 -2,3 -145,2 -2,3 -145,3 -14,5 -165,4 23 -22,5 -4,7 -2,4 -171,4 -2,3 -171,5 -15 -164,7 24 -19,1 -81,9 -2,5 163,5 -2,5 163,5 -13,9 -166,1 25 -15,3 -121,3 -2,7 138,4 -2,7 138,4 -12,5 -172 26 -13,2 -151,2 -2,7 113,1 -2,7 113,2 -11,3 177,1 27 -11,9 -177,4 -2,9 88 -2,9 88 -10,9 164,4 28 -11,6 154,7 -2,9 63 -2,9 63 -11 152,4 29 -12,3 129 -3 37,3 -3 37,6 -11,6 141,3 30 -13,6 102,2 -3,1 12,2 -3,1 12,2 -12,8 131,6 31 -17 79,1 -3,1 -13,8 -3,1 -13,5 -14,4 127,4 32 -24 84,5 -3,2 -40,4 -3,2 -40,3 -16,2 135,3 33 -22,3 149,9 -3,4 -67,1 -3,4 -67 -14,6 153,5 34 -14,1 138,3 -3,8 -94,5 -3,8 -94,5 -11,2 152,8 35 -10,8 113,7 -4,5 -120,4 -4,5 -120,4 -9 137,7 36 -9,2 91,2 -5 -144,2 -5 -144,2 -7,9 120,2 37 -8,7 70,5 -5,3 -167,3 -5,3 -167,6 -7,2 101,5 38 -9 52,8 -5,3 168,9 -5,3 168,6 -7,4 83,4 39 -10,2 38,6 -4,9 143,4 -5 143,4 -8,7 66,7 40 -12,8 23,3 -4,6 114,2 -4,6 114,2 -11,4 55,7 41 -21,3 26,3 -4,8 82,7 -4,8 82,9 -13,8 70,9 42 -17,3 121,6 -5,3 52 -5,3 51,9 -11,5 85,5 43 -9,8 112,7 -5,9 21,5 -6 21,5 -8,7 84,6 44 -6,7 98 -6,8 -7,9 -6,8 -7,6 -6,9 74,8 45 -5,2 82,5 -7,8 -34,9 -7,8 -35,2 -6,2 62,2 46 -4,8 71,7 -8,3 -62,1 -8,4 -62,1 -6,4 56,3 47 -4,7 65,2 -9,1 -92,6 -9,1 -92,7 -5,3 56,1 48 -4,3 60,6 -10,4 -122 -10,5 -122,1 -4,3 52,5 49 -4 55,7 -11,8 -150,2 -11,8 -150,1 -3,7 47,2 50 -3,7 51 -14 -180 -13,9 -180 -3 39,1 Ref. : DSCHT4694QAG0211 - 30 Jul 2010 P(S12) (°) dB(S21) 3/14 Route Départementale 128, BP46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09 P( S21) (°) dB(S22) P(S22) (°) Specifications subject to change without notice 25-40GHz Attenuator CHT4694-QAG Typical Package Sij parameters Tamb = +25°C, V1 = 0V & V2= 0V – Maximum attenuatio n Freq (GHz) dB(S11) P(S11) (°) dB(S12) P(S12) (°) dB(S21) P(S21) (°) dB(S22) P(S22) (°) 20 -11,4 -161,9 -24,7 -99,8 -24,7 -99,7 -4,3 -137,3 21 -11,3 -170,7 -25,2 -120,6 -25,1 -120,2 -4,2 -152,4 22 -11,3 -178,7 -25,7 -143,8 -25,6 -143,9 -4,1 -166,8 23 -11,2 173 -25,7 -166,9 -25,7 -167 -4,1 179,2 24 -11,1 164,3 -26 168,6 -26 168,7 -4,1 165,7 25 -11,1 154,7 -26,2 145 -26,3 145 -4,3 152,3 26 -11,2 143,6 -26,5 120,9 -26,5 120,6 -4,3 139 27 -11,3 132,6 -26,6 100,7 -26,6 100,5 -4,6 125,4 28 -11,4 120,3 -26 78,4 -26,1 78,2 -5 112,2 29 -11,4 107,4 -25,7 55,4 -25,7 55,6 -5,5 97,6 30 -11,4 94,2 -25,1 33,3 -25,2 33,2 -6,1 82,5 31 -11,5 82 -25 8 -24,9 8,6 -6,8 66,3 32 -11,5 70,7 -25 -16,5 -25,1 -16,4 -7,8 49,8 33 -11,6 57,1 -25,1 -36,6 -25,1 -36,7 -9 30,2 34 -11,6 45,8 -25,1 -61 -25,1 -61,1 -10,6 7,5 35 -11,8 33,7 -25,6 -84,8 -25,5 -84,8 -12,2 -19,2 36 -12,5 20,2 -26,2 -107,5 -26,3 -107,9 -13,5 -51,3 37 -13,7 5,7 -27,1 -126,2 -27 -127,1 -14,4 -90,2 38 -16,5 -14 -27 -147,8 -27,1 -147,9 -13,3 -130,7 39 -23,9 -51,2 -26,1 -170,8 -26,1 -170,9 -10,9 -163,8 40 -24,4 175,2 -25,8 152 -25,8 152,3 -8,9 168,9 41 -16,4 145,6 -26,3 116,6 -26,4 116,6 -7,4 144,3 42 -12 133,5 -27,9 72 -28 71,4 -6,1 124 43 -8,2 121,6 -31 43,1 -31,1 41,2 -5,1 109,5 44 -5,7 108,9 -31,8 22,2 -31,8 22,1 -4 96,4 45 -4,3 93,2 -31,6 -13,9 -31,5 -13,5 -3,3 82,8 46 -3,4 81,7 -32,1 -34,6 -32 -36,3 -2,6 70,8 47 -2,9 70,7 -32,4 -67,4 -32,3 -67,7 -1,8 59,7 48 -2,5 61,3 -33,4 -89,1 -33,4 -89 -1,5 49,3 49 -2,4 51,8 -34,5 -105,4 -34,3 -105,3 -1,6 40,8 50 -2,9 44,8 -33,8 -117,2 -33,9 -117,7 -1,8 30,7 The Sij measurement calibration planes are defined in the paragraph Ref. : DSCHT4694QAG0211 - 30 Jul 2010 4/14 Route Départementale 128, BP46 - 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 25-40GHz Attenuator CHT4694-QAG Typical Measured Performances Tamb = +25°C Measurements in the package access planes Attenuation versus frequency V1 = -5V to 0V & V2= -5V and after V1= 0V & V2 = -5V to 0V A B A : V1 = -5V to 0V & V2= -5V B : V1= 0V & V2 = -5V to 0V Ref. : DSCHT4694QAG0211 - 30 Jul 2010 5/14 Route Départementale 128, BP46 - 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 25-40GHz Attenuator CHT4694-QAG Input Return loss versus frequency in total attenuation range Output Return loss versus frequency in total attenuation range Ref. : DSCHT4694QAG0211 - 30 Jul 2010 6/14 Route Départementale 128, BP46 - 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 25-40GHz Attenuator CHT4694-QAG Attenuation versus temperature V1=V2=-5V -40°C +85°C +25°C -40°C +25°C V1=0V / V2=-5V +85°C V1=V2=0V +85°C -40°C +25°C Input P1dB versus temperature at 34GHz -40°C +25°C V1=V2=-5V +85°C V1=0V / V2=-5V +85°C -40°C -40°C +25°C +85°C +85°C +25°C V1=V2=0V -40°C Ref. : DSCHT4694QAG0211 - 30 Jul 2010 7/14 Route Départementale 128, BP46 - 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 25-40GHz Attenuator CHT4694-QAG Input P1dB versus temperature at 40GHz -40°C +25°C V1=V2=-5V +85°C V1=0V / V2=-5V -40°C +25°C +85°C +85°C +25°C V1=V2=0V -40°C Input IP3 versus temperature at 34GHz V1=-3.5V / V2=-5V (worst case in terms of linearity) +85°C +25°C -40°C Ref. : DSCHT4694QAG0211 - 30 Jul 2010 8/14 Route Départementale 128, BP46 - 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 25-40GHz Attenuator CHT4694-QAG Input IP3 versus temperature at 39GHz V1=-3.5V / V2=-5V (worst case in terms of linearity) +85°C +25°C -40°C Ref. : DSCHT4694QAG0211 - 30 Jul 2010 9/14 Route Départementale 128, BP46 - 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 25-40GHz Attenuator CHT4694-QAG Package outline (1) T4694 Matt tin, Lead Free (Green) 1- Gnd(2) Units mm 2- From the standard JEDEC MO-220 (VEED) 17- GND 9- Gnd(2) Gnd 10- RF Out 3- RF In 11- Gnd(2) 4- Gnd(2) 12- Gnd(2) 5- NC 13- NC 6- V1 14- NC 7- V2 15- NC 8- NC 16- NC (2) (1) The package outline drawing included to this data-sheet is given for indication. Refer to the application note AN0017 available at http://www.ums-gaas.com for exact package dimensions. (2) It is strongly recommended to ground the Gnd pins on the PCB board. Ref. : DSCHT4694QAG0211 - 30 Jul 2010 10/14 Route Départementale 128, BP46 - 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 25-40GHz Attenuator CHT4694-QAG Definition of the Sij reference planes The reference planes used for Sij measurements given above are symmetrical from the symmetrical axis of the package (see drawing beside). The input and output reference planes are located at 2.65mm offset (input wise and output wise respectively) from this axis. Then, the given Sij parameters incorporate the land pattern of the evaluation motherboard recommended at the page 13. Recommended package footprint Refer to the application note AN0017 available at http://www.ums-gaas.com for package foot print recommendations. SMD mounting procedure The SMD leadless package has been designed for high volume surface mount PCB assembly process. The dimensions and footprint required for the PCB (motherboard) are given in the drawings above. For the mounting process standard techniques involving solder paste and a suitable reflow process can be used. For further details, see application note AN0017. Recommended ESD management Refer to the application note AN0020 available at http://www.ums-gaas.com for ESD sensitivity and handling recommendations for the UMS package products. Recommended environmental management Refer to the application note AN0019 available at http://www.ums-gaas.com for environmental data on UMS package products. Ref. : DSCHT4694QAG0211 - 30 Jul 2010 11/14 Route Départementale 128, BP46 - 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 25-40GHz Attenuator CHT4694-QAG Packaged part biasing options To obtain good performances in linearity, biasing voltage should be applied as following: st Control of 1 stage attenuation with V1 from –5V to 0V, with V2 fixed at -5V nd Control of 2 stage with V2 from –5V to 0V, with V1 fixed at 0V … RF IN … … RF OUT … V1 V2 Voltage 0V V1 V2 -5V Min. Max. Attenuation This part could be also driven in Single Voltage Control, applying the same voltage from -5V to 0V on V1 and V2. Ref. : DSCHT4694QAG0211 - 30 Jul 2010 12/14 Route Départementale 128, BP46 - 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 25-40GHz Attenuator CHT4694-QAG Evaluation mother board Compatible with the proposed footprint. Based on typically Ro4003 / 8mils or equivalent. Using a microstrip 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). 10nF ±10% capacitors V1 Ref. : DSCHT4694QAG0211 - 30 Jul 2010 V2 13/14 Route Départementale 128, BP46 - 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 25-40GHz Attenuator CHT4694-QAG Ordering Information QFN 3x3 RoHS compliant package: CHT4694-QAG/XY Stick: XY = 20 Tape & reel: XY = 21 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. : DSCHT4694QAG0211 - 30 Jul 2010 14/14 Route Départementale 128, BP46 - 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