HRF-AT4520 31.0 dB, DC - 4 GHz, 5 Bit Parallel Digital Attenuator The Honeywell HRF-AT4520 is a 5-bit digital attenuator ideal for use in broadband communication system applications that require accuracy, speed and low power consumption. The HRF-AT4520 is manufactured with Honeywell's patented Silicon On Insulator (SOI) CMOS manufacturing technology, which provides the performance of GaAs with the economy and integration capabilities of conventional CMOS. These attenuators are DC coupled to improve lower operating frequency, frequency response and reduce the number of DC bias points required. FEATURES HRF-AT4520 in VQFN Package Very Low DC Power Consumption Attenuation In Steps From 1 dB To 31 dB Single Positive Power Supply Voltage Parallel Data Interface 50 Ohm Impedance DC-coupled, bi-directional RF path Space Saving VQFN Surface Mount Packaging Lead-free, RoHS compliant and halogen-free RF ELECTRICAL SPECIFICATIONS @ + 25oC Results @ VDD = 5.0 +/- 10%, VSS = 0 unless otherwise stated, Z0 = 50 Ohms Contact Honeywell for relative performance at other supply configurations Parameter Test Condition Insertion Loss Frequency Minimum Typical Maximum 1.0 GHz 2.5 GHz 3.0 GHz 4.0 GHz 2.5 3.0 3.6 5.5 2.9 3.5 3.9 5.8 1dB Compression VSS = 0V, Input Power VSS =-3V, Input Power 2.0 GHz 2.0 GHz 24 29 Input IP3 VSS = 0V Two-tone inputs, up to +5 dBm @ 0 dBm attenuation 2.5 GHz 38 Input IP3 Vss = -3V Two-tone inputs, up to +5 dBm @ 0 dBm attenuation 2.5 GHz >38 Return Loss Any Combination of Bits Attenuation Accuracy All attenuation states Trise, Tfall Ton, Toff (Tpd) 10% To 90% 50% Cntl To 90% / 10%RF -11 1.0 GHz 2.5 GHz 3.0 GHz 4.0 GHz +/-(0.3 +/-(0.3 +/-(0.3 +/-(0.3 -13 + 3.0% of programmed IL) + 4.0% of programmed IL) + 5.5% of programmed IL) + 7.0% of programmed IL) 10 15 Units dB dBm dBm dBm dBm dB dB nS nS HRF-AT4520 FUNCTIONAL SCHEMATIC S4 S3 S2 S1 S0 ESD, Buffer, Level Shift RF In RF Out 16dB 8dB 4dB 2dB 1dB DC ELECTRICAL SPECIFICATIONS @ + 25C Parameter Minimum 1 Typical VDD 3.3 5.0 VSS -5.0 IDD <5.0 CMOS Logic level (0) 0 CMOS Logic level (1) VDD - 0.8 Input Leakage Current Note 1, the performance curves are for VDD = +5.0 +/- 10% Maximum Units 5.5 V V uA V V uA 50 0.8 VDD 10 ABSOLUTE MAXIMUM RATINGS1 Parameter Absolute Maximum Units Input Power + 35 dBm VDD +6.0 V VSS -5.5 V 2 ESD Voltage 400 V O Operating Temperature -40 To +85 C O Storage Temperature -65 To +125 C O Moisture Sensitivity Level Level 3 @ 260 C Digital Inputs VDD+0.6 max to -0.6 min V Note 1 - Operation of this device beyond any of these parameters may cause permanent damage. Note 2 - Although the HRF-AT4520 contains ESD protection circuitry on all digital inputs, precautions should be taken to ensure that the Absolute Maximum Ratings are not exceeded. Latch-Up: Unlike conventional CMOS digital attenuators, Honeywell's HRF-AT4520 is immune to latch-up. 2 www.honeywell.com/microwave HRF- AT4520 PIN CONFIGURATIONS Pin Function Pin Function 1 2 3 4 5 6 7 8 9 10 11 12 VDD GROUND GROUND RF INPUT GROUND GROUND GROUND GROUND GROUND GROUND GROUND GROUND 13 14 15 16 17 18 19 20 21 22 23 24 GROUND GROUND RF OUTPUT GROUND VSS GROUND S0 S1 S2 S3 S4 OPEN Note: Bottom ground plate must be grounded for proper RF performance. TRUTH TABLE S4 S3 S2 S1 S0 Output 0 0 0 0 0 1 1 0 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0 0 1 Reference Input 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB Operation: Data on parallel input "S" pins are independently buffered and presented to the RF attenuator circuits. "0" = CMOS Low, "1" = CMOS High. www.honeywell.com/microwave 3 HRF-AT4520 PERFORMANCE CURVES Insertion Loss Typical AT4520 Reference Insertion Loss 0.0 - 40 C -0.5 + 25 C -1.0 + 85 C Insertion Loss (dB) 3.3 V -1.5 -2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -5.0 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75 Frequency (GHz) Return Loss Typical AT4520 Input Return Loss 0.0 -5.0 Input Return Loss (dB) -10.0 -15.0 -20.0 Attn 1dB Attn 2 dB -25.0 Attn 3dB -30.0 Attn 5dB Attn 9dB -35.0 Attn 17dB Attn 31dB -40.0 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 Frequency (GHz) 4 www.honeywell.com/microwave HRF- AT4520 Step Accuracy Typical AT4520 Step Accuracy 1.0 0.8 1.0 dB 2.0 dB 4.0 dB 8.0 dB 16.0 dB 31.0 dB 0.6 Step Accuracy (dB) 16 dB 0.4 4 dB 0.2 2 dB 0.0 -0.2 8 dB 31 dB -0.4 -0.6 -0.8 -1.0 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 Frequency (GHz) Relative Accuracy Typical AT4520 Relative Accuracy 0.5 Relative Accuracy (dB) 16 dB 4 dB 0.0 8 dB -0.5 -1.0 2.0 dB 4.0 dB 8.0 dB 16.0 dB 31.0 dB 31 dB -1.5 -2.0 0.00 1.0 dB 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 Frequency (GHz) www.honeywell.com/microwave 5 HRF-AT4520 PACKAGE OUTLINE DRAWING Notes 1. Pin 1 identifier can be a combination or a dot and/or chamfer. A chamfer is on the bottom ground plane. 2. Dimensions are in millimeters. HALOGEN-FREE MATERIAL SET O The -FL attenuators have a halogen-free material set that can withstand a maximum soldering temperature of 260 C. LEAD FINISH The package leads are Nickel Palladium with a Gold and Silver flash (NiPdAu+Ag). The configuration being manufactured and delivered today is lead-free and RoHS compliant. Plating thicknesses are listed below in microns (um). Ni = 0.254 um min Pd = 0.00254 um min Au+Ag = 0.00508 um min Au Composition = 30% min to 70% max LEAD FREE QFN SURFACE MOUNT APPLICATION Please see Application Note AN310a for assembly process recommendations. The maximum soldering temperature of o the - FL is 260 C. Application Notes can be found at our website: www.honeywell.com/microwave CIRCUIT APPLICATION INFORMATION These attenuators require a DC reference to ground. They may not operate properly when AC coupled on both the RF input and output without a DC ground reference provided as part of the circuit. See Application Note AN311. 6 www.honeywell.com/microwave HRF- AT4520 EVALUATION CIRCUIT BOARD Honeywell's evaluation board provides an easy to use method of evaluating the RF performance of our attenuator. Simply connect power, DC and RF signals to be measuring attenuator performance in less than 10 minutes. Open Gnd Gnd VDD S4 S3 S2 S1 S0 VSS RF In HRF-AT4520 Evaluation Board Top View RF Out HRF-AT4520 Honeywell HRF-AT4520 Evaluation Board EVALUATION CIRCUIT BOARD LAYOUT DESIGN DETAILS Item Description PCB Attenuator Chip Capacitor RF Connector DC Pin Impedance Matched Multi-Layer FR4 HRF-AT4520 Digital Attenuator Panasonic Model ECU-E1C103KBQ Capacitor, .01uf 0402 10% 16V Johnson Connectors Model 142-0701-801 SMA RF Coaxial Connector Mil-Max Model 800-10-064-10-001 Header Pins ORDERING INFORMATION Ordering Number Delivery Method Units Per Shipment HRF-AT4520-FL-TR HRF-AT4520-E Tape & Reel Evaluation Board 2500 Units per Reel One Board Per Box The new -FL attenuators replace and are electrically equivalent to the -GR attenuators. The -GR attenuators are obsolete. FIND OUT MORE For more information on Honeywell's Microwave Products visit us online at www.honeywellmicrowave.com or contact us at 800-323-8295 (763-954-2474 internationally). Honeywell reserves the right to make changes to improve reliability, function or design. Honeywell does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others. Honeywell 12001 Highway 55 Plymouth, MN 55441 Tel: 800-323-8295 www.honeywellmicrowave.com www.honeywell.com/microwave Form #4520W May 2012 (c)2012 Honeywell International Inc. 7