MAAD-007078 Digital Attenuator Rev. V5 31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz Functional Schematic Features Attenuation: 1.0dB Steps to 31dB Single Positive Supply Contains internal DC to DC converter Low DC Power Consumption Small Footprint, JEDEC Package Integral TTL Driver 50 ohm Impedance Lead-Free CSP-1 Package 100% Matte Tin Plating over Copper Halogen-Free Green Mold Compound 260C Reflow Compatible RoHS* Compliant Version of AT90-1263 Description The MAAD-007078 is a GaAs FET 5-bit digital attenuator with integral TTL driver. Step size is 1.0 dB providing 31 dB total attenuation range. This device is in an FQFP-N plastic surface mount package. The MAAD-007078 is ideally suited for use Pin Configuration where accuracy, fast speed, very low power Pin No. Function Pin No. Function consumption and low costs are required. 1 GND 17 NC For dual supply designs without DC-DC converter 2 C16 18 NC noise, use MAATCC0010. 3 C8 19 Vcc 4 C4 20 NC 5 C2 21 CP2 6 C1 22 NC 7 GND 23 CP1 Ordering Information 8 NC 24 NC 2 9 NC 25 Vee Part Number Package 1 10 NC 26 GND MAAD-007078-000100 Bulk Packaging 11 GND 27 RF2 MAAD-007078-0001TR 1000 piece reel 12 RF1 28 GND MAAD-007078-0001TB Sample Test Board 1 13 GND 29 NC 2 14 NC 30 Vee Note: Reference Application Note M513 for reel size information. 15 NC 31 NC 16 NC 32 Vcc 1. Pins 10 & 29 must be isolated 2. The negative voltage Vee is produced internally and requires a 0.1F cap to GND. Generated noise is typical of switching DC-DC Converters. * Restrictions on Hazardous Substances, European Union 3. The exposed pad centered on the package bottom must be Directive 2002/95/EC. connected to RF and DC ground. (For PQFN Packages) 11 1 M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. Visit www.macom.com for additional data sheets and product information. For further information and support please visit: MAAD-007078 Digital Attenuator Rev. V5 31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz Electrical Specifications: T = 25C, Z = 50 A 0 Parameter Test Conditions Frequency Units Min Typ Max Insertion Loss DC - 3.0 GHz dB 3.5 3.8 Individual Bits 1-2-4-8-16 dB DC - 3.0 GHz (.3 +5% of atten setting) Attenuation Accuracy dB Any Combination of Bits 1 to 31 dB DC - 3.0 GHz (.5 +7% of atten setting) VSWR Full Range DC - 3.0 GHz Ratio 2.0:1 2.2:1 50% Cntl to 90%/10% RF 75 150 Switching Speed ns 10% to 90% or 90% to 10% 20 50 50 MHz +21 1 dB Compression dBm 0.5 - 3.0 GHz +24 50 MHz +35 Input IP Two-tone inputs up to +5 dBm dB 3 0.5-3.0 GHz +48 Vcc V 4.75 5.0 5.25 V LOW-level input voltage 0.0 0.8 IL V V HIGH-level input voltage 2.0 5.0 IH lin (Input Leakage Current) Vin = V or GND A -1.0 1.0 CC Vcc min to max, 4 Icc mA 6 10 Logic 0 or 1 5 Turn-on Current For guaranteed start-up mA 125 Icc (Additional Supply Current V = Max, Vcntrl = V - 2.1 V mA 1.0 CC CC Per TTL Input Pin) Generated from Switching Noise DC-DC Converter with 3.5 MHz dBm -93 recommended capacitors Thermal Resistance jc C/W 35 4. During turn-on, the device requires an initial start up current (Icc) specified as Turn-on Current. Once operational, Icc will drop to the specified levels. 5. The DC-DC converter is guaranteed to start in 100 s as long as the power supplies have the maximum turn-on current available for start up. 9 6,7 Recommended PCB Configuration Absolute Maximum Ratings Parameter Absolute Maximum Input Power 0.05 GHz +27 dBm 0.5 - 3.0 GHz +34 dBm V -0.5V V +6.0V CC CC 8 Vin -0.5V Vin V + 0.5V CC Operating Temperature -40C to +85C Storage Temperature -65C to +125C 6. Exceeding any one or combination of these limits may cause permanent damage to this device. 7. MACOM does not recommend sustained operation near these survivability limits. 8. Standard CMOS TTL interface, latch-up will occur if logic signal is applied prior to power supply. 9. Application Note S2083 is available on line at www.macom.com 22 2 M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. Visit www.macom.com for additional data sheets and product information. For further information and support please visit: