CHA3512

CHA3512 RoHS COMPLIANT 6-18GHz Low Noise Digital Variable Amplifier GaAs Monolithic Microwave IC Description The CHA3512 is composed by a Single Pole Double Through (SPDT) switch followed by a one step digital attenuator and a double stage travelling wave amplifier. It is designed for defense applications. The backside of the chip is both RF and DC grounded. This helps to simplify the assembly process. The circuit is manufactured with a pHEMT process, 0.25µm gate length, via holes through the substrate, air bridges and electron beam gate lithography. 0 dB state It is available in chip form. Main Features ■ Performances: 6-18GHz ■ 23dBm saturated output power ■ 16dB gain ■ 1 bit attenuator for 20dB dynamic range ■ DC power consumption: 210mA @ 4.5V ■ Chip size: 4.27 x 2.46 x 0.1mm 20dB state Typical on wafer Measurements Gain versus attenuation states Main Characteristics Tamb. = 25° C Symbol Fop G Psat ATT dyn Parameter Operating frequency range Small signal gain @ Attenuator state 0dB Saturated Output power @ Attenuator state 0dB Attenuator range Min 6 Typ 16 23 20 Max 18 Unit GHz dB dBm dB ESD Protection: Electrostatic discharge sensitive device. Observe handling precautions ! Ref. DSCHA3512-8144 - 23 May 08 1/10 Specifications subject to change without notice United Monolithic Semiconductors S.A.S. 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 CHA3512 6-18GHz Digital Variable Amplifier Electrical Characteristics on wafer Tamb = +25° C Vd = Pads B, D = 4.5V, Vg = Pads A, C tuned for Id = 210mA Symbol Fop G Parameter Operating frequency range (1) Small signal gain @ Attenuator state 0dB (1) 6-16GHz 16-18GHz Min 6 Typ Max 18 Unit GHz 16 14 10 19 -25 16 13 20 -35 22 dB dB dB ATT dyn Is Attenuator range Isolation @ Attenuator state 0dB & switch OFF (1) Output power at 1dB compression @ Attenuator state 0dB (1) Saturated Output power @ Attenuator state 0dB (1) Noise figure @ Attenuator state 0dB Input Return Loss all attenuator states (switch ON) Output Return Loss all attenuator states (switch ON and switch OFF) Drain bias DC voltage (Pads B, D) Bias current @ small signal Control voltage for Attenuator bit & SPDT switch P1dB 20 dBm Psat 23 dBm NF RL_IN 7 -15 -8 dB dB RL_OUT -20 -6 dB Vd Id Vc 4.5 210 -5 250 0 V mA V (1) These values are representative for on-wafer measurements that are made without bonding wires at the RF ports. Ref. DSCHA3512-8144 - 23 May 08 2/10 Specifications subject to change without notice 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 6-18GHz Digital Variable Amplifier CHA3512 Absolute Maximum Ratings Tamb. = 25° (1) C Symbol Vd Id Vg Vc Pin Tch Ta Tstg Parameter Maximum Drain bias voltage ( Pads B, D) Drain bias current with Vd=4.5V Gate bias voltage (Pads A,C) Attenuator bit & SPDT control voltage Maximum input power overdrive (2) Maximum channel temperature Operating temperature range Storage temperature range Values +5 300 -2 to +0.4 -7 to +0.6 +20.0 +175 -40 to +70 -55 to +125 Unit V mA V V dBm ° C ° C ° C (1) Operation of this device above anyone of these parameters may cause permanent damage. (2) Duration < 1s. Thermal Resistance channel to ground paddle =123° C/W for Tamb. = +70° C. LNA Control interface The attenuator state is controlled by 2 voltages. The SPDT switch is controlled by 2 voltages. state Theoretical attenuation (dB) Voltage CONTROL PAD 20A (V) 20B (V) E (V) Switch control F (V) 0 1 2 0 référence 20 Isolation -5 0 -5 0 -5 0 -5 -5 0 0 0 -5 Ref. : DSCHA3512-8144 - 23 May 08 3/10 Specifications subject to change without notice 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 CHA3512 6-18GHz Digital Variable Amplifier Typical on wafer Measurements @ 25° C Bias conditions: Vd = 4.5V, Vg tuned for Id = 210mA 0dB state 20dB state Linear Gain versus attenuator states Linear Gain with SPDT switch OFF Ref. DSCHA3512-8144 - 23 May 08 4/10 Specifications subject to change without notice 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 6-18GHz Digital Variable Amplifier CHA3512 Saturated output power@nominal state Attenuator accuracy versus frequency Switch OFF dB(S11) versus frequency for all states dB(S22) versus frequency for all states Ref. : DSCHA3512-8144 - 23 May 08 5/10 Specifications subject to change without notice 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 CHA3512 6-18GHz Digital Variable Amplifier Typical test fixture Measurements @ 25° C Bias conditions: Vd = 4.5V, Vg tuned for Id = 210mA 0dB state 20dB state Switch OFF Linear Gain versus attenuation states Switch OFF Input Return Loss versus attenuation states Ref. DSCHA3512-8144 - 23 May 08 6/10 Specifications subject to change without notice 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 6-18GHz Digital Variable Amplifier CHA3512 Output Return Loss versus attenuation states Ref. : DSCHA3512-8144 - 23 May 08 7/10 Specifications subject to change without notice 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 CHA3512 6-18GHz Digital Variable Amplifier Typical Chip on wafer Sij parameters for reference state Tamb = +25° Vd = +4.5 V, Id = 210 mA , 0dB state (20A = -5V, 20B = 0V). C, Freq (GHz) dB(S11) P(S11) (° dB(S21) P(S21) (° dB(S12) P(S12) (° dB(S22) P(S22) (° ) ) ) ) 1.0 -5.5 -92.5 -20.7 161.9 -62.1 112.2 -0.5 -57.6 1.5 -8.0 -124.4 -2.7 69.1 -66.5 -40.1 -1.2 -85.9 2.0 -11.1 -149.5 0.3 94.1 -68.7 91.4 -1.5 -107.3 2.5 -13.9 -167.5 10.0 50.3 -64.9 14.8 -1.9 -132.8 3.0 -17.9 170.0 13.8 -2.9 -83.1 140.3 -2.8 -157.7 3.5 -25.6 167.5 15.6 -54.8 -87.8 39.6 -4.7 -175.7 4.0 -28.0 -112.8 16.3 -91.9 -73.1 116.8 -6.1 167.0 4.5 -20.8 -106.6 17.1 -127.4 -67.2 82.5 -8.0 152.1 5.0 -17.8 -121.1 17.6 -161.5 -63.8 57.4 -10.0 140.7 5.5 -16.9 -137.3 18.0 165.7 -61.5 22.6 -12.2 132.5 6.0 -17.4 -152.0 18.2 133.9 -60.0 -7.1 -14.5 127.7 6.5 -19.4 -161.4 18.3 103.0 -57.6 -33.7 -16.7 127.0 7.0 -22.7 -156.8 18.3 72.7 -56.5 -63.6 -18.7 129.8 7.5 -23.3 -123.6 18.2 43.1 -55.2 -89.9 -19.7 136.0 8.0 -19.3 -107.8 18.0 14.2 -54.0 -115.4 -20.2 140.3 8.5 -15.6 -107.5 17.8 -13.9 -53.6 -142.5 -21.1 137.2 9.0 -13.3 -118.9 17.5 -41.2 -53.7 -160.6 -21.5 132.1 9.5 -11.7 -131.3 17.3 -68.0 -52.6 -177.3 -22.9 127.6 10.0 -10.5 -147.0 17.1 -94.5 -51.6 153.2 -24.4 126.2 10.5 -10.2 -161.0 16.9 -120.6 -53.2 131.7 -26.5 125.0 11.0 -10.0 -174.3 16.9 -146.6 -53.3 114.2 -28.6 130.5 11.5 -10.1 172.0 16.9 -173.0 -53.7 99.0 -29.8 142.9 12.0 -10.4 157.6 17.0 159.8 -55.4 76.4 -29.7 148.2 12.5 -11.1 142.7 17.0 131.8 -59.3 61.7 -30.1 140.1 13.0 -12.4 125.9 17.0 102.9 -59.3 48.4 -32.0 109.0 13.5 -14.7 112.4 16.8 74.2 -62.4 -22.1 -34.9 37.3 14.0 -17.6 104.1 16.7 45.8 -59.0 -113.2 -29.6 -36.7 14.5 -20.9 107.6 16.6 16.4 -54.6 -169.8 -25.4 -71.4 15.0 -20.5 120.0 16.6 -14.5 -51.5 171.1 -24.5 -93.5 15.5 -18.4 113.6 16.4 -46.8 -48.0 149.4 -25.2 -99.5 16.0 -16.8 92.0 16.1 -80.4 -45.8 126.8 -25.9 -79.2 16.5 -15.7 63.4 15.5 -114.6 -43.8 100.8 -21.5 -60.8 17.0 -14.9 31.3 14.7 -148.5 -43.3 75.6 -15.9 -66.5 17.5 -14.5 2.8 14.0 175.9 -42.6 52.2 -12.2 -84.5 18.0 -13.8 -20.5 12.9 138.1 -42.4 25.5 -9.6 -106.7 18.5 -12.8 -39.8 11.3 98.1 -43.0 -5.1 -8.4 -131.5 19.0 -11.5 -57.4 8.9 59.2 -45.7 -39.8 -8.3 -154.4 19.5 -10.3 -75.6 6.0 23.7 -50.7 -77.9 -8.9 -174.8 20.0 -9.3 -93.4 3.2 -8.9 -60.5 -154.2 -10.2 167.0 20.5 -8.7 -110.5 0.8 -40.4 -57.9 108.5 -12.1 151.2 21.0 -8.4 -127.9 -0.9 -74.3 -50.5 78.2 -15.0 138.3 21.5 -8.4 -144.2 -1.8 -118.3 -47.7 52.1 -21.2 150.9 22.0 -8.6 -159.1 -3.7 176.5 -44.3 19.4 -15.1 -171.3 22.5 -8.9 -175.4 -8.9 108.2 -45.6 -14.4 -12.2 157.4 23.0 -9.5 167.6 -13.6 57.0 -47.3 -35.8 -12.7 134.3 23.5 -10.4 150.2 -16.4 15.7 -49.2 -46.6 -13.9 117.4 24.0 -11.6 130.5 -18.1 -17.7 -52.6 -62.7 -15.2 103.7 Ref. DSCHA3512-8144 - 23 May 08 8/10 Specifications subject to change without notice 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 6-18GHz Digital Variable Amplifier Chip Assembly and Mechanical Data CHA3512 To Vd DC Drain Supply RF IN1 RF OUT RF IN2 Note: RF wire bondings should be as short as possible, lower than 0.35mm. 25µm diameter gold wire is to be prefered. Recommended circuit bonding table Label 20A, 20B B D A C E, F Type Vc Vd Vd Vg Vg Vc Decoupling Not required 120pF / 10nF 120pF / 10nF Not required Not required Not required Comment 20dB attenuator control Drain Supply Drain Supply Gate Supply Gate Supply Switch control Ref. : DSCHA3512-8144 - 23 May 08 9/10 Specifications subject to change without notice 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 CHA3512 Bonding pad positions 6-18GHz Digital Variable Amplifier Chip thickness: 100µm Ordering Information Chip form : CHA3512-99F/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. DSCHA3512-8144 - 23 May 08 10/10 Specifications subject to change without notice 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