HRF-AT4521 Preliminary 31.0 dB, DC-4GHz, 5 Bit Serial Digital Attenuator Features • • • • • • Very Low DC Power Consumption Attenuation In Steps From 1 dB To 31 dB Single Or Dual Power Supply Voltages Serial Data Interface 50 Ohm Compatible Impedance TM Space Saving LPCC Surface Mount Packaging Product Description The Honeywell HRF-AT4521 is a 5-bit digital attenuator that is ideal for use in broadband communication system applications that require accuracy, speed and low power consumption. The HRF-AT4521 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. HRF-AT4521 in LPCC™ Package RF Electrical Specifications @ + 25oC Parameter Test Condition Insertion Loss Frequency 1dB Compression VSS = 0V, Input Power DC – 0.5 GHz 2.0 GHz 3.0 GHz 4.0 GHz DC – 2.0 GHz 1dB Compression VSS = - VDD, Input Power DC – 2.0 GHz Input IP3 Minimum Typical Maximum Units 1.8 2.8 --24 dB dB dB dB dBm 29 dBm VSS = 0V Two-tone inputs DC – 2.0 GHz 38 dBm Up To +5 dBm @ 0 dBm Attenuation Input IP3 Vss = - VDD DC – 2.0 GHz >38 dBm Two-tone inputs Up To + 5 dBm @ 0 dBm Attenuation Return Loss* Any Combination of Bits DC - 4.0 GHz 11 dB Attenuation Accuracy All attenuation states DC – 1.0 GHz +/-(0.3 + 3% of programmed IL) dB All attenuation states 2.0 GHz +/-(0.3 + 3% of programmed IL) dB All attenuation states 3.0 GHz +/-(0.4 + 4% of programmed IL) dB All attenuation states 4.0 GHz +/-(0.5 + 6% of programmed IL) dB Trise, Tfall* 10% To 90% TBD nS Ton, Toff (Tpd) 50% Cntl To 90%/10%RF nS Transients In-Band mV T clock Period (Tprd)* T high / T low = ½ minimum clock period 50 nS T data set up (Tsup)* Set up to rising edge of clock 5 nS T data hold (Thld)* Data hold after rising edge of clock 2 nS T latch set up (Tlsup)* Data set up to falling edge of OE 5 nS 0.01uF Decoupling Capacitors Required On Power Supply Rails. ________________________________________________________________________________________________________ *By design Web Site: www.mysoiservices.com Honeywell Email: [email protected] Solid State Electronics Center 12001 State Highway 55 2002 4521W Published June 2002 Page 1 Plymouth, Minnesota 55441-4799 1-800-323-8295 HRF-AT4521 Preliminary Functional Schematic DC Electrical Specifications @ + 25oC Parameter Minimum VDD 3.3 1 VSS IDD Power Supply Current 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% Typical 5.0 Maximum -5.0 2 0.8 VDD 10 Units V V mA V V uA Absolute Maximum Ratings2 Parameter Input Power VDD VSS ESD Voltage Operating Temperature Storage Temperature ( Digital Inputs Absolute Maximum + 35 +6.0 -5.5 400 -40 To +85 -65 To +125 VDD+0.6 max to VSS -0.6 min Units dBm V V V Degrees C Degrees C V Note 2) Operation of this Device beyond any of these parameters may cause permanent damage. Latch-Up: Unlike conventional CMOS digital attenuators, Honeywells' HRF-AT4521 is immune to latch-up. . ESD Protection: Although the HRF-AT4521 contains ESD protection circuitry on all digital inputs, conventional precautions should be taken to ensure that the Absolute Maximum Ratings are not exceeded. ________________________________________________________________________________________________________ Web Site: Email: www.mysoiservices.com [email protected] 2002 4521W Published June 2002 Page 2 Honeywell Solid State Electronics Center 12001 State Highway 55 Plymouth, Minnesota 55441-4799 1-800-323-8295 HRF-AT4521 Preliminary Package Outline Drawing This package conforms to the LPCCTM 4 x 4 mm 16 lead body dimensions. See ASAT LPCC Marketing Outline Dwg. # DGMJ00004 Latest Rev. at http://www.asat.com for additional dimensional information. Pin Configuration Pin Function Pin Function 1 2 3 4 5 6 7 8 VDD GROUND RF INPUT GROUND GROUND GROUND GROUND GROUND 9 10 11 12 13 14 15 16 GROUND RF OUTPUT GROUND VSS DIGITAL GROUND OE CLK DATA Serial Data Load Serial data is shifted into the register on the rising edge of clock, MSB first. The OE falling edge must occur prior to any additional rising clock edges. See the Electrical Spec Table for AC parameters. ________________________________________________________________________________________________________ Web Site: Email: www.mysoiservices.com [email protected] 2002 4521W Published June 2002 Page 3 Honeywell Solid State Electronics Center 12001 State Highway 55 Plymouth, Minnesota 55441-4799 1-800-323-8295 HRF-AT4521 Preliminary Truth Table S4 0 0 0 0 0 1 1 S3 0 0 0 0 1 0 1 S2 0 0 0 1 0 0 1 S1 0 0 1 0 0 0 1 S0 0 1 0 0 0 0 1 Output Reference Input 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB 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 switch performance in less than 10 minutes. HRF-AT4521 Evaluation Board Evaluation Circuit Board Layout Design Details Item PCB Attenuator Chip Capacitor RF Connector DC Pin Description Impedance Matched Multi-Layer FR4 HRF-AT4521 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 ________________________________________________________________________________________________________ Web Site: Email: www.mysoiservices.com [email protected] 2002 4521W Published June 2002 Page 4 Honeywell Solid State Electronics Center 12001 State Highway 55 Plymouth, Minnesota 55441-4799 1-800-323-8295 HRF-AT4521 Preliminary Evaluation Circuit Board Connections Digital VDD CLK Gnd Gnd Data OE VSS HRF-AT4521 Evaluation Board Top View RF In RF Out HRF-AT4521 Honeywell “0” = CMOS Low, “1” = CMOS High Performance Curves Insertion Loss This Insertion Loss curve represents the Min/Max conditions for the “0” pass state versus all processing and temperature conditions. The Min case is at –40C with the “Fast” processing conditions. The Max case is at +85C with the “Slow” processing conditions. All other combinations fall within that band. The typical 25C case is labeled +25C TT. ________________________________________________________________________________________________________ Web Site: Email: www.mysoiservices.com [email protected] 2002 4521W Published June 2002 Page 5 Honeywell Solid State Electronics Center 12001 State Highway 55 Plymouth, Minnesota 55441-4799 1-800-323-8295 HRF-AT4521 Preliminary Return Loss This Return Loss set of curves represents the combination of all Return Loss cases for all attenuation settings. All cases are better than –14dB Return Loss at 4GHz. Attenuation State Accuracy The Attenuation Accuracy curve with vertical axis of +/- 1dB shows all states better than +/0.5dB to 2GHz and better than +/- 0.8dB to 4GHz. ________________________________________________________________________________________________________ Web Site: Email: www.mysoiservices.com [email protected] 2002 4521W Published June 2002 Page 6 Honeywell Solid State Electronics Center 12001 State Highway 55 Plymouth, Minnesota 55441-4799 1-800-323-8295 HRF-AT4521 Preliminary Compression The P1dB curve shows all states with a P1dB compression at approximately 23dB input power. The conditions for this curve are Vdd = +5.0v and Vss = 0v. For higher P1dB compression values, supply Vss with a negative voltage as shown in the next curve. The P1dB curve shows all states with a P1dB compression at approximately 31dB input power. The conditions for this curve are Vdd = +5.0v and Vss = -5.0v. ________________________________________________________________________________________________________ Web Site: Email: www.mysoiservices.com [email protected] 2002 4521W Published June 2002 Page 7 Honeywell Solid State Electronics Center 12001 State Highway 55 Plymouth, Minnesota 55441-4799 1-800-323-8295 HRF-AT4521 Preliminary Ordering Information Ordering Number Delivery Method Units Per Shipment HRF-AT4521-B In Chip Tubes HRF-AT4521-TR HRF-AT4521-E On Tape And Reel On Individual Engineering Evaluation Board Customer Specific, Usually Minimum Of 50 Per Chip Tube Customer Specific One Board Per Box 3 (Note 3) Call Honeywell for details LPCC™ is a registered Trademark of ASAT Ltd. 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. ________________________________________________________________________________________________________ Web Site: Email: www.mysoiservices.com [email protected] 2002 4521W Published June 2002 Page 8 Honeywell Solid State Electronics Center 12001 State Highway 55 Plymouth, Minnesota 55441-4799 1-800-323-8295