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 Parameter Min Typ Max Unit Fop Operating frequency range 6 18 GHz G Small signal gain @ Attenuator state 0dB 13 dB Psat Saturated Output power @ Attenuator state 0dB 19 dBm ATT dyn Attenuator range with 4bit 39.5 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 6-18GHz Digital Variable Amplifier CHA3514 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 ATT dyn Parameter Min Typ Max Unit 18 GHz Operating frequency range (1) 6 Small signal gain @ Attenuator state 0dB (1) 11 13 Attenuator bit: State 2.5dB 2 2.6 3.5 dB State 5dB 4 5 6 dB State 10 dB 9 10 11 dB State 20dB 19 22 23 dB 35 39.5 dB Attenuator dynamic range with 4bit dB P1dB Output power at 1dB compression @ Attenuator state 0dB (1) 18 dBm Psat Saturated Output power @ Attenuator state 0dB (1) 19 dBm Noise figure @ Attenuator state 0dB 7 dB NF RL_IN Input Return Loss all attenuator states -13 -8 dB Output Return Loss all attenuator states -15 -9 dB Vd Drain bias DC voltage (Pads B,D) 4.5 Id Bias current @ small signal 190 Vc Control voltage for Attenuator bits RL_OUT -5 V 250 mA 0 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 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 Specifications subject to change without notice 6-18GHz Digital Variable Amplifier CHA3514 Absolute Maximum Ratings Tamb. = 25°C (1) Symbol Parameter Values Unit Vd Maximum Drain bias voltage ( Pads B,D) +5 V Id Drain bias current with Vd=4.5V 320 mA Vg Gate bias voltage (Pads A, E) -2 to +0.4 V Vc Attenuator bits control voltage -7 to +0.6 V Pin Maximum input power overdrive (2) +20.0 dBm Tch Maximum channel temperature +175 °C Ta Operating temperature range -40 to +70 °C Storage temperature range -55 to +125 °C Tstg (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. state 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Theoretical attenuation Voltage CONTROL PAD dB 10A (V) 10B (V) 5A (V) 5B (V) 2.5A (V) 2.5B (V) 20A (V) 20B (V) 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 -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 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 Specifications subject to change without notice 6-18GHz Digital Variable Amplifier CHA3514 Typical chip on wafer Sij parameters for reference state Tamb 25°C, B = D = 4.5V, Id = 190mA, 10A, 5A, 2.5A, 20A = -5V, 10B, 5B, 2.5B, 20B = 0V 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 Ref. : DSCHA3514-8144 - 23 May 08 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 4/10 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 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 Specifications subject to change without notice 6-18GHz Digital Variable Amplifier CHA3514 Typical on wafer Measurements @ 25°C Bias conditions: Vd = 4.5V, Vg tuned for Id = 190mA Linear Gain versus attenuator states Bit 2.5dB Bit 5dB Bit 10dB Bit 20dB Ref. : DSCHA3514-8144 - 23 May 08 5/10 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 Specifications subject to change without notice 6-18GHz Digital Variable Amplifier CHA3514 Attenuator bit values vs frequency for main states Saturated output power @ nominal state dB(S11) versus frequency for all states Ref. : DSCHA3514-8144 - 23 May 08 6/10 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 Specifications subject to change without notice 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 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 Specifications subject to change without notice 6-18GHz Digital Variable Amplifier CHA3514 Typical test fixture Measurements Bias conditions: Vd=4.5V, Vg tuned for Id = 190mA 18 14 10 6 2 Gain (dB) -2 -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 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 Specifications subject to change without notice 6-18GHz Digital Variable Amplifier CHA3514 Chip Assembly and Mechanical Data A D B 120pF 120pF 10A E 5A 10B 5B 2.5A 2.5B 20A 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 Ref. : DSCHA3514-8144 - 23 May 08 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 9/10 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 Specifications subject to change without notice 6-18GHz Digital Variable Amplifier CHA3514 Bonding pad positions Chip thickness: 100µm Ordering Information Chip form : CHA3514-99F/00 Elettronica S.p.A has the intellectual property of this MMIC and gives to United Monolithic Semiconductors S.A.S. non-exclusive license to sell it. 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 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 Specifications subject to change without notice