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| 26-33 GHz GaAs MMIC Image Rejection Balanced Mixer AM028R1-00 Features I Low Conversion Loss, 8 dB I Insensitive to LO Power Variations OHMIC ADDED 9-4-92 Chip Outline 2.155 I Image Rejection, 20 dB I No DC Bias Required OHMIC ADDED 9-4-92 1.563 I Requires External IF 90 Hybrid 1.061 1.060 Description Alpha's image rejection balanced GaAs Schottky diode mixer has a typical conversion loss of 8 dB at an LO power level as low as 11 dBm over the band 26-33 GHz. An external 90 IF hybrid is required to combine the IF1 and IF2 signals at the desired IF frequency. The chip uses Alpha's proven Schottky diode technology, and is based upon MBE layers for the highest uniformity and repeatability. The diodes employ surface passivation to ensure a rugged, reliable part with through-substrate via holes and gold-based backside metallization to facilitate an epoxy die attach process. All chips are screened for DC diode parameters and lot samples are RF measured to guarantee performance. This device is recommended for applications requiring down conversion. 0.000 0.000 0.381 1.119 1.270 2.008 0.610 SMHO 05 0.085 2.320 Dimensions indicated in mm. All pads are 0.07 mm wide. Chip thickness = 0.1 mm. Absolute Maximum Ratings Characteristic Operating Temperature Storage Temperature Total Input Power (RF + LO) Value -55C to +125C -65C to +150C 23 dBm Electrical Specifications at 25C Parameter RF and LO Frequency Range IF Frequency Range LO Power Level Conversion Loss1 Image Rejection1 RF and LO Return Loss1 LO to RF Isolation1 LO to IF Isolation1 RF Input 1 dB Compression Point1 Individual Diode Series Resistance 1. Not measured on a 100% basis. 2. Typical represents the median parameter value across the specified frequency range for the median chip. Symbol FRF, FLO FIF PLO LC IR RLRF, RLLO ISOLO-RF ISOLO-IF P1 dB RS Min. Typ.2 26-33 0-3 11-19 8 20 17 18 30 12 Max. Unit GHz GHz dBm dB dB dB dB dB dBm 3.0 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 2/00A 1 26-33 GHz GaAs MMIC Image Rejection Balanced Mixer AM028R1-00 Typical Performance Data 16 LO to IF Isolation 50 16 50 Return Loss & Isolation (dB) Return Loss & Isolation (dB) LO to IF Isolation Conversion Loss (dB) 14 12 LO to RF Isolation 10 LO Return Loss 8 Conversion Loss 6 7 9 11 13 15 17 19 40 30 20 10 0 Conversion Loss (dB) 14 12 10 8 6 25 26 27 28 29 30 31 32 33 34 LO Return Loss Conversion Loss LO to RF Isolation 40 30 20 10 0 LO Power (dBm) LO Frequency (GHz) Performance vs. LO Power FRF = 30.3 GHz, FLO = 28 GHz, PRF = -10 dBm 25 Performance vs. LO Frequency FRF = FLO + 2 GHz, PLO = 12 dBm 25 Image Rejection (dB) Image Rejection (dB) 20 15 10 5 0 7 9 11 13 15 17 19 20 15 10 5 0 25 26 27 28 29 30 31 32 33 34 LO Power (dBm) LO Frequency (GHz) Image Rejection vs. LO Power FRF = 30.3 GHz, FLO = 28 GHz, PRF = -10 dBm Image Frequency = 25.7 GHz Image Rejection vs. LO Frequency FRF = FLO + 2 GHz, PLO = 12 dBm Image Frequency = FLO - 2 GHz Wire Bonding Configuration Circuit Schematic 90 Phase Shifter/Splitter 0 Splitter OHMIC ADDED 9-4-92 LO LO OHMIC ADDED 9-4-92 RF IF1 RF IF2 SMHO 05 IF1 IF ports bonded to IF hybrid. IF2 2 Alpha Industries, Inc. [781] 935-5150 * Fax [617] 824-4579 * Email sales@alphaind.com * www.alphaind.com Specifications subject to change without notice. 2/00A |
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