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| CHA3513 RoHS COMPLIANT 6-18GHz 3 bit Digital Variable Amplifier GaAs Monolithic Microwave IC Description The CHA3513 is composed by a three steps digital attenuator followed by a three stage travelling amplifier and a Single Pole Single Through (SPST) switch. 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 PM-HEMT process, 0.25m gate length, via holes through the substrate, air bridges and electron beam gate lithography. It is available in chip form. 10A 5A 10A1 BCF G RF RF IN 10dB 5dB 10dB OUT 10B 5B 10B1 ADE H Typical on wafer Measurements Gain versus attenuation states Main Features | Performances : 6-18GHz | 20dBm saturated output power | 16 dB gain | 3 bit attenuator for 26dB range | DC power consumption, 300mA @ 4.5V | Chip size : 6.68 x 2.46 x 0.1 mm Main Characteristics Tamb. = 25C 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 3bit Min 6 Typ Max 18 Unit GHz dB dBm dB 16 20 25 ESD Protection : Electrostatic discharge sensitive device. Observe handling precautions ! Ref. : DSCHA35136216 - 04 Aug 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 CHA3513 6-18GHz Digital Variable Amplifier Electrical Characteristics on wafer Tamb = +25C Vd= Pads B, D, F= 4.5V, Vg= Pads A, C, E tuned for Id= 300mA Symbol Fop G ATT bit Parameter Operating frequency range (1) Small signal gain @ Attenuator state 0dB (1) Attenuator bit: State 5dB State 10 dB 1 State 10dB 2 Min 6 Typ Max 18 Unit GHz dB dB dB dB dB dB 16 5 10 10 25 -35 ATT dyn Is Attenuator range with 3bit Small signal gain @ 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 VSWR all attenuator states Output VSWR all attenuator states & switch ON Drain bias DC voltage (Pads B,D,F) Bias current @ small signal Control voltage for Attenuator bits & SPST switch -5 P1dB 18 dBm Psat NF VSWRin VSWRout Vd Id Vc 20 12 2.0:1 2.0:1 4.5 300 350 0 dBm dB V mA V (1) These values are representative for pulsed on-wafer measurements that are made without bonding wires at the RF ports. Ref. : DSCHA35136216 - 04 Aug 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 6-18GHz Digital Variable Amplifier CHA3513 Absolute Maximum Ratings Tamb. = 25C (1) Symbol Vd Id Vg Vc Pin Tch Ta Tstg Parameter Maximum Drain bias voltage ( Pads B,D,F) Drain bias current with Vd=4.5V Gate bias voltage (Pads A,C,E) Attenuator bits & SPST control voltage Maximum input power overdrive (2) Maximum channel temperature Operating temperature range Storage temperature range Values +5 450 -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. 3bit VGA Control interface The attenuator states are controlled by 6 voltages. The SPST switch is controlled by 2 voltages. state Theoretical attenuation dB Voltage CONTROL PAD 10A (V) 10B (V) 5A (V) 5B (V) 10A1 (V) 10B1 (V) Switch control G H 0 1 2 3 4 6 7 8 0 reference 5 10 config.1 15 config.1 15 config.2 10 config. 2 25 Isolation -5 -5 0 0 -5 -5 0 -5 0 0 -5 -5 0 0 -5 0 -5 0 -5 0 0 -5 0 -5 0 -5 0 -5 -5 0 -5 0 -5 -5 -5 -5 0 0 0 -5 0 0 0 0 -5 -5 -5 0 -5 -5 -5 -5 -5 -5 -5 0 0 0 0 0 0 0 0 -5 Ref. : DSCHA35136216 - 04 Aug 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 CHA3513 6-18GHz Digital Variable Amplifier Typical on wafer Measurements @ 25C Bias conditions: Vd=4.5V, Vg tuned for Id = 300mA Linear Gain versus attenuator states 0dB state 5dB state 10dB states Linear Gain with SPST switch OFF Ref. : DSCHA35136216 - 04 Aug 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 6-18GHz Digital Variable Amplifier Saturated output power @ nominal state CHA3513 dB(S11) versus frequency for all states Attenuator accuracy versus frequency for all states dB(S22) versus frequency for all states Switch OFF Attenuator phase variation versus frequency for all states Ref. : DSCHA35136216 - 04 Aug 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 CHA3513 6-18GHz Digital Variable Amplifier Typical test fixture Measurements @ 25C Bias conditions: Vd=4.5V, Vg tuned for Id = 300mA Linear Gain versus attenuation states 25 20 15 10 5 0 -5 Gain dB -10 -15 -20 -25 -30 -35 -40 -45 -50 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Switch OFF Frequency GHz Input Return Loss versus attenuation states Ref. : DSCHA35136216 - 04 Aug 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 6-18GHz Digital Variable Amplifier 0 -5 -10 CHA3513 Input return loss (dB) -15 -20 -25 -30 -35 -40 -45 -50 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Frequency GHz Output Return Loss versus attenuation states 0 -5 Switch OFF -10 Output return loss( dB) -15 -20 -25 -30 0 2 4 6 8 10 12 14 16 18 20 22 24 26 Frequency GHz Ref. : DSCHA35136216 - 04 Aug 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 CHA3513 6-18GHz Digital Variable Amplifier Chip Assembly and Mechanical Data To Vd DC Drain Supply 100nF 10nF 120pF B 10A 5A 10A1 120pF C F H 10B 5B 10B1 A D 120pF E G Note : Supply feed should be capacitively bypassed. 25m diameter gold wire is to be prefered. Recommended circuit bonding table Label 10A, 10B 5A, 5B 10A1, 10B1 B D F A C E H G Type Vc Vc Vc Vd Vd Vd Vg Vg Vg Vc Vc Decoupling Not required Not required Not required 120pF / 10nF 120pF / 10nF 120pF / 10nF Not required Not required Not required Not required Not required Comment First 10dB pad control 5dB pad control Second 10dB pad control Drain Supply Drain Supply Drain Supply Gate Supply Gate Supply Gate Supply Switch control Switch control Ref. : DSCHA35136216 - 04 Aug 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 6-18GHz Digital Variable Amplifier Bonding pad positions CHA3513 ( Chip thickness : 100m) Ref. : DSCHA35136216 - 04 Aug 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 CHA3513 6-18GHz Digital Variable Amplifier Ordering Information Chip form : CHA3513-99F/00 Information furnished is believed to be accurate and reliable. However United Monolithic Semiconductors S.A.S. assumes no responsability 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. : DSCHA35136216 - 04 Aug 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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