MAAD-008866 75 Digital Attenuator, 6-Bit, Serial / Parallel Control Rev. V2 31.5 dB, 0.005 - 1.0 GHz 3 Features Functional Schematic 75 Impedance B0 B1 B2 B3 B4 B5 Integrated TTL/CMOS Compatible Driver 24 Parallel & Serial (P/S) Control with power-up 18 1 state selection P/S VDD 0.5-dB Attenuation Steps to 31.5 dB PUP1 CLK Low DC Power Consumption PUP2 Lead-Free 4mm PQFN-24LD Plastic Package SERIN Halogen-Free Green Mold Compound LE SEROUT RoHS* Compliant and 260C Re-flow Compatible N/C GND Description 6 RFOUT RFIN The MAAD-008866 is a 6-bit, 0.5-dB step GaAs 12 digital attenuator in a lead-free 4mm PQFN-24LD surface mount plastic package. This device is ideally suited for use where high accuracy, very low power consumption and low 3. Blocking capacitors are required on all RF ports intermodulation products are required. This part can be used in all 75 systems operating up to 1 GHz. Pin Configuration 1,2 Pin No. Function Pin No. Function Ordering Information Parallel / Serial 1 13 RF Output Part Number Package Select 2 Clock 14 No Connection MAAD-008866-TR3000 3000 piece reel 3 Serial Data In 15 Serial Data Out MAAD-008866-001SMB Sample Board 4 Latch Enable 16 Power Up State 2 1. Reference Application Note M513 for reel size information. 2. All sample boards include 5 loose parts. 5 Ground 17 Power Up State 1 6 RF Input 18 Bias Voltage 7 RF Ground 19 B5 Handling Procedures Please observe the following precautions to avoid 8 RF Ground 20 B4 damage: 9 RF Ground 21 B3 10 RF Ground 22 B2 Static Sensitivity 11 RF Ground 23 B1 Gallium Arsenide Integrated Circuits are sensitive to electrostatic discharge (ESD) and can be 12 RF Ground 24 B0 damaged by static electricity. Proper ESD control 4 25 Paddle techniques should be used when handling these devices. An external protection circuit using an 4. The exposed pad centered on the package bottom must be inexpensive anti-parallel diode pair can be used to connected to the RF and DC ground. protect the IC. Please reference application note AN3028 on MAAD-008866 75 Digital Attenuator, 6-Bit, Serial / Parallel Control Rev. V2 31.5 dB, 0.005 - 1.0 GHz 5,6 Electrical Specifications : T = 25C, Z = 75 , V = 5 V, V = 5 V A 0 DD C Parameter Test Conditions Units Min. Typ. Max. 5 MHz 1.3 50 MHz 1.35 Reference Insertion Loss 500 MHz dB 1.6 1000 MHz 1.8 2.3 Any Bit or combination Attenuation Accuracy (0.15 dB + 4% of attenuation setting in dB) 5 - 1000 MHz Return Loss 5 - 1000 MHz dB 18 Trise, Tfall 10% to 90% RF, 90% to 10% RF ns 320 Ton, Toff 50% Control to 90 / 10% RF ns 340 Transients In Band mV 88 50 MHz 12 Input P1dB dBm 1000 MHz 25.6 0 dBm/tone at Input, 6 MHz Spacing 33 IIP3 50 MHz dBm 43 1000 MHz 0 dBm/tone at Input, 6 MHz Spacing 51 IIP2 50 MHz dBm 74 1000 MHz Composite Triple Beat, CTB 132 channels, +30 dBmV/channel at the input dBc -88 Composite Second Order, CSO 132 channels, +30 dBmV/channel at the input dBc -69 Steady State I V = +5 V A 4 DD DD 5. External DC blocking capacitors are required on all RF ports. Loss varies at 0.003 dB/C. 6. Low frequency is determined by DC block and RF GND capacitor value. 7,8 9 Truth Table Absolute Maximum Ratings B5 B4 B3 B2 B1 B0 Attenuation (dB) Parameter Absolute Maximum 1 1 1 1 1 1 Reference IL Input Power 50 MHz +15 dBm 1 1 1 1 1 0 0.5 1000 MHz +27 dBm 1 1 1 1 0 1 1 Operating Voltage +8.5 V 1 1 1 0 1 1 2 Control Voltage -0.5 V < V < 5.5 V C 1 1 0 1 1 1 4 Operating Temperature -40C to +85C 1 0 1 1 1 1 8 Storage Temperature -65C to +150C 0 1 1 1 1 1 16 7. Exceeding any one or combination of these limits may cause 0 0 0 0 0 0 31.5 permanent damage to this device. 8. M/A-COM Technology Solutions does not recommend 9. Logic 0 = 0 to +0.8 V, Logic 1 = +2 to +5 V. sustained operation near these survivability limits. 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: