CHA3514_08

CHA3514 RoHS COMPLIANT 6-18GHz 4 bit Digital Variable Amplifier GaAs Monolithic Microwave IC Description The CHA3514 is composed by a two stage travelling wave amplifier followed by a four steps digital attenuator. 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. It is available in chip form. Main Features ■ Performances: 6-18GHz ■ 19dBm saturated output power ■ 13 dB gain ■ 4bit attenuator for 39.5dB dynamic range ■ DC power consumption, 190mA @ 4.5V ■ Chip size: 5.54 x 2.30 x 0.1mm 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 with 4bit Min 6 Typ 13 19 39.5 Max 18 Unit GHz dB dBm dB ESD Protection: Electrostatic discharge sensitive device. Observe handling precautions! Ref. DSCHA3514-8144 - 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 CHA3514 6-18GHz Digital Variable Amplifier Electrical Characteristics on wafer Tamb = +25° C Vd = Pads B, D = 4.5V, Vg = Pads A, E tuned for Id = 190mA Symbol Fop G ATT bit Parameter Operating frequency range (1) Small signal gain @ Attenuator state 0dB (1) Attenuator bit: State 2.5dB State 5dB State 10 dB State 20dB Min 6 11 2 4 9 19 35 Typ Max 18 Unit GHz dB 13 2.6 5 10 22 39.5 18 3.5 6 11 23 dB dB dB dB dB dBm ATT dyn P1dB Attenuator dynamic range with 4bit 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 Output Return Loss all attenuator states Drain bias DC voltage (Pads B,D) Bias current @ small signal Control voltage for Attenuator bits Psat 19 dBm NF RL_IN RL_OUT Vd Id Vc 7 -13 -15 4.5 190 -5 250 0 -8 -9 dB dB dB V mA V (1) These values are representative for on-wafer measurements that are made without bonding wires at the RF ports. Ref. : DSCHA3514-8144 - 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 CHA3514 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, E) Attenuator bits control voltage Maximum input power overdrive (2) Maximum channel temperature Operating temperature range Storage temperature range Values +5 320 -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. 4bit VGA Control interface The attenuator states are controlled by 8 voltages. Theoretical attenuation dB 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 référence 2.5 5 7.5 10 12.5 15 17.5 20 22.5 25 27.5 30 32.5 35 37.5 Voltage CONTROL PAD 10A (V) 10B (V) 5A (V) 5B (V) 2.5A (V) 2.5B (V) 20A (V) 20B (V) state -5 -5 -5 -5 0 0 0 0 -5 -5 -5 -5 0 0 0 0 0 0 0 0 -5 -5 -5 -5 0 0 0 0 -5 -5 -5 -5 -5 -5 0 0 -5 -5 0 0 -5 -5 0 0 -5 -5 0 0 0 0 -5 -5 0 0 -5 -5 0 0 -5 -5 0 0 -5 -5 -5 0 -5 0 -5 0 -5 0 -5 0 -5 0 -5 0 -5 0 0 -5 0 -5 0 -5 0 -5 0 -5 0 -5 0 -5 0 -5 -5 -5 -5 -5 -5 -5 -5 -5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -5 -5 -5 -5 -5 -5 -5 -5 Ref. : DSCHA3514-8144 - 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 CHA3514 6-18GHz Digital Variable Amplifier Typical chip on wafer Sij parameters for reference state Tamb 25° B = D = 4.5V, Id = 190mA, 10A, 5A, 2.5A, 20A = -5V, 10B, 5B, 2.5B, 20B = 0V C, Freq (GHz) 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 11.5 12.0 12.5 13.0 13.5 14.0 14.5 15.0 15.5 16.0 16.5 17.0 17.5 18.0 18.5 19.0 19.5 20.0 20.5 21.0 21.5 22.0 22.5 23.0 23.5 24.0 dB(S11) -0.8 -1.5 -2.1 -2.8 -4.1 -5.1 -6.3 -7.8 -9.3 -10.7 -12.2 -13.8 -15.0 -15.6 -16.2 -16.6 -16.1 -15.3 -14.6 -14.0 -13.0 -12.2 -11.8 -11.5 -11.2 -11.6 -12.5 -13.1 -13.2 -14.1 -15.7 -18.0 -19.7 -16.8 -12.7 -9.9 -7.1 -5.3 -4.1 -3.3 -2.8 -2.6 -2.4 -2.2 -2.2 -2.1 -2.1 P(S11) (° ) -42.4 -62.3 -81.0 -99.6 -116.9 -133.6 -148.7 -162.3 -175.1 174.7 167.3 161.4 157.0 155.3 156.1 154.3 151.1 148.6 145.0 136.7 127.2 119.0 108.7 96.1 83.5 73.4 64.6 57.6 52.4 44.8 40.2 39.2 66.0 97.0 96.4 89.2 80.6 68.5 54.4 41.5 30.8 21.1 11.6 3.5 -3.3 -10.1 -16.9 dB(S21) -44.8 -24.1 -6.6 2.5 8.3 11.0 12.4 13.3 13.9 14.3 14.6 14.9 15.1 15.2 15.3 15.4 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.4 15.3 15.2 15.3 15.4 15.5 15.5 15.4 15.3 14.9 14.5 13.8 12.7 10.3 6.6 2.6 -0.8 -3.6 -5.8 -7.7 -9.3 -10.6 -11.9 -13.2 P(S21) (° ) -114.9 -166.4 156.9 94.4 37.6 -17.7 -65.1 -107.0 -145.1 178.9 144.5 111.4 79.3 47.9 16.9 -13.7 -44.0 -73.9 -103.8 -133.5 -163.1 167.2 137.5 107.7 77.9 49.1 20.1 -10.6 -42.1 -74.7 -108.3 -143.1 -178.3 144.9 105.1 64.1 19.1 -19.0 -47.9 -70.2 -89.1 -107.0 -125.3 -143.8 -162.9 176.9 156.5 dB(S12) -69.9 -69.2 -67.0 -61.4 -69.4 -86.1 -78.4 -72.8 -70.0 -68.7 -66.8 -64.9 -67.2 -62.7 -59.7 -57.5 -55.6 -54.7 -53.2 -54.7 -56.0 -56.4 -59.8 -76.5 -65.0 -60.2 -59.5 -55.2 -49.9 -45.5 -43.7 -42.0 -41.7 -41.5 -41.0 -42.1 -45.0 -50.6 -54.4 -53.6 -54.2 -54.2 -55.5 -58.9 -62.1 -65.9 -62.2 P(S12) (° ) -91.3 -148.8 -165.4 -179.5 74.2 97.0 133.3 112.9 77.8 34.4 -5.4 -37.6 -61.6 -85.6 -109.9 -138.0 -167.3 171.2 136.4 117.6 96.6 74.2 43.6 22.9 178.8 148.9 146.9 142.1 141.5 117.2 87.3 61.2 36.3 14.5 -13.7 -42.4 -76.5 -91.9 -69.2 -67.9 -66.0 -73.1 -89.7 -95.4 -90.4 -60.7 -32.7 dB(S22) -3.3 -4.6 -7.2 -10.5 -14.8 -17.4 -16.9 -15.5 -14.4 -13.5 -12.9 -12.4 -12.1 -12.0 -12.2 -12.7 -13.6 -15.1 -17.3 -20.4 -23.7 -24.5 -22.9 -21.9 -20.1 -17.4 -15.1 -13.5 -12.6 -12.6 -13.9 -16.6 -21.3 -22.3 -17.6 -15.1 -15.6 -20.1 -29.1 -19.5 -14.7 -12.0 -10.4 -9.4 -8.8 -8.6 -8.6 P(S22) (° ) -59.4 -89.6 -122.7 -160.5 147.5 88.8 43.1 15.9 -2.5 -17.5 -30.6 -42.3 -54.0 -66.0 -78.5 -90.1 -102.2 -113.3 -123.0 -125.3 -113.1 -88.9 -73.3 -66.9 -59.5 -59.3 -68.1 -81.7 -99.9 -121.4 -146.5 -177.9 136.0 46.6 -12.9 -51.6 -84.5 -107.2 -59.0 -18.0 -29.5 -43.1 -56.0 -69.1 -81.5 -92.4 -102.8 Ref. : DSCHA3514-8144 - 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 Typical on wafer Measurements @ 25° C Bias conditions: Vd = 4.5V, Vg tuned for Id = 190mA CHA3514 Linear Gain versus attenuator states Bit 2.5dB Bit 5dB Bit 10dB Bit 20dB Attenuator bit values vs frequency for main states Ref. : DSCHA3514-8144 - 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 CHA3514 6-18GHz Digital Variable Amplifier Saturated output power @ nominal state dB(S11) versus frequency for all states Ref. : DSCHA3514-8144 - 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 CHA3514 dB(S22) versus frequency for all states Noise Figure vs frequency @ nominal state Ref. : DSCHA3514-8144 - 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 CHA3514 6-18GHz Digital Variable Amplifier Typical test fixture Measurements Bias conditions: Vd=4.5V, Vg tuned for Id = 190mA 18 14 10 6 2 -2 Gain (dB) -6 -10 -14 -18 -22 -26 -30 -34 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Frequency GHz -40°C 25° C +70° C Linear Gain versus attenuation states & temperature Ref. : DSCHA3514-8144 - 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 CHA3514 A B 120pF 10A 5A 2.5A 20A D 120pF E 10B 5B 2.5B 20B 10nF 100nF To Vd DC Drain Supply Note : Supply feed should be capacitively bypassed. 25µm diameter gold wire is to be prefered. Recommended circuit bonding table Label 10A, 10B 5A, 5B 2.5A, 2.5B 20A, 20B B D A E Type Vc Vc Vc Vc Vd Vd Vg Vg Decoupling Not required Not required Not required Not required 120pF / 10nF 120pF / 10nF Not required Not required Comment 10dB pad control 5dB pad control 2.5dB pad control 20dB pad control Drain Supply Drain Supply Gate Supply Gate Supply Ref. : DSCHA3514-8144 - 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 CHA3514 Bonding pad positions 6-18GHz Digital Variable Amplifier Chip thickness: 100µm Ordering Information Chip form : CHA3514-99F/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. : DSCHA3514-8144 - 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