MAAD-008866 75 Ω Digital Attenuator, 6-Bit, Serial / Parallel Control 31.5 dB, 0.005 - 1.0 GHz Rev.V1 Functional Schematic 5 Features • 75 Ω Impedance • Integrated TTL/CMOS Compatible Driver • Parallel & Serial (P/S) Control with power-up state selection • 0.5-dB Attenuation Steps to 31.5 dB • Low DC Power Consumption • Lead-Free 4mm PQFN-24LD Plastic Package • Halogen-Free “Green” Mold Compound • RoHS* Compliant and 260°C Re-flow Compatible RF GND RF GND RF GND RF GND Pin No. Function Pin No. Function 1 Parallel / Serial Select 13 RF Output 2 Clock 14 No Connect 3 Serial Data In 15 Serial Data Out 4 Latch Enable 16 Power Up State 2 5 GND 17 Power Up State 1 6 RF Input 18 Bias Voltage 7 RF GND 19 B5 8 RF GND 20 B4 9 RF GND 21 B3 10 RF GND 22 B2 11 RF GND 23 B1 12 RF GND 24 Package MAAD-008866-TR3000 3000 piece reel MAAD-008866-001SMB Sample Board 1. Reference Application Note M513 for reel size information. 2. All sample boards include 5 loose parts. Absolute Maximum Ratings 3,4 Parameter Absolute Maximum Input Power 50 MHz 1000 MHz +15 dBm +27 dBm Operating Voltage +8.5 V Control Voltage -0.5 V < VC < 5.5 V Operating Temperature -40°C to +85°C Storage Temperature 5. Blocking capacitors are required on all RF ports Pin Configuration Ordering Information 1,2 Part Number RF GND The MAAD-008866 is a 6-bit, 0.5-dB step GaAs digital attenuator in a lead-free 4mm PQFN-24LD surface mount plastic package. The MAAD-008866 is ideally suited for use where high accuracy, very low power consumption and low intermodulation products are required. This part can be used in all 75 Ω systems operating up to 1 GHz. RF GND Description -65°C to +150°C 3. Exceeding any one or combination of these limits may cause permanent damage to this device. 4. M/A-COM Technology Solutions does not recommend sustained operation near these survivability limits. 25 B0 6 Paddle 6. The exposed pad centered on the package bottom must be connected to the RF and DC ground. * Restrictions on Hazardous Substances, European Union Directive 2002/95/EC. 1 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice. MAAD-008866 75 Ω Digital Attenuator, 6-Bit, Serial / Parallel Control 31.5 dB, 0.005 - 1.0 GHz Rev.V1 Electrical Specifications 7,8: TA = 25°C, Z0 = 75 Ω, VDD = 5 V, VC = 5 V Parameter Test Conditions Reference Insertion Loss 5 MHz 50 MHz 500 MHz 1000 MHz Attenuation Accuracy Any Bit or combination 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 — Input P1dB 50 MHz 1000 MHz dBm — 12 25.6 — IIP3 0 dBm/tone at Input, 6 MHz Spacing 50 MHz 1000 MHz dBm — 33 43 — IIP2 0 dBm/tone at Input, 6 MHz Spacing 50 MHz 1000 MHz dBm — 51 74 — 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 — µA — 4 — Steady State IDD Units dB Min. Typ. Max. — — — — 1.3 1.35 1.6 1.8 — — — 2.3 ± (0.15 dB + 4% of attenuation setting in dB) VDD = +5 V 7. External DC blocking capacitors are required on all RF ports. Loss varies at 0.003 dB/°C. 8. Low frequency is determined by DC block and RF GND capacitor value. Application 10 Truth Table 9 B5 B4 B3 B2 B1 B0 Attenuation (dB) 1 1 1 1 1 1 Reference IL 1 1 1 1 1 0 0.5 1 1 1 1 0 1 1 1 1 1 0 1 1 2 1 1 0 1 1 1 4 1 0 1 1 1 1 8 0 1 1 1 1 1 16 0 0 0 0 0 0 31.5 9. 0 = 0 to 0.8V, 1 = 2 to 5V. 10.Capacitors C3 - C8 should be as close to package pins as possible. 2 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice. MAAD-008866 75 Ω Digital Attenuator, 6-Bit, Serial / Parallel Control 31.5 dB, 0.005 - 1.0 GHz Recommended PCB Rev.V1 Off-Chip Component Values Component Value Package C1 & C2 0.1 µF 0402 C3 - C8 0.1 µF 0201 C9 0.01 µF 0402 Handling Procedures Please observe the following precautions to avoid damage: Static Sensitivity Gallium Arsenide Integrated Circuits are sensitive to electrostatic discharge (ESD) and can be damaged by static electricity. Proper ESD control techniques should be used when handling these devices. An external protection circuit using an inexpensive anti-parallel diode pair can be used to protect the IC. Please reference application note AN3028 on http://www.macomtech.com for further detail. Lead Free 4 mm 24-Lead PQFN † † Reference Application Note M538 for lead-free solder reflow recommendations. Meets JEDEC moisture sensitivity level 1 requirements. Plating is 100% matte tin over copper. 3 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice. MAAD-008866 75 Ω Digital Attenuator, 6-Bit, Serial / Parallel Control 31.5 dB, 0.005 - 1.0 GHz Rev.V1 Typical Performance Curves Insertion Loss Relative Attenuation across all major states 0.0 0 -5 -0.4 +25°C -40°C +85°C -0.8 -10 -15 -1.2 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB -20 -1.6 -25 -2.0 -2.4 0.0 -30 0.2 0.4 0.6 0.8 1.0 -35 0.0 0.2 Frequency (GHz) Input Return Loss, across all attenuation states 0.6 0.8 1.0 Output Return Loss, across all attenuation states 0 0 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB -5 -10 -15 -10 -15 -20 -25 -25 -30 -30 -35 -35 0.2 0.4 0.6 Frequency (GHz) 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 31.5 dB -5 -20 -40 0.0 0.4 Frequency (GHz) 0.8 1.0 -40 0.0 0.2 0.4 0.6 0.8 1.0 Frequency (GHz) 4 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice. MAAD-008866 75 Ω Digital Attenuator, 6-Bit, Serial / Parallel Control 31.5 dB, 0.005 - 1.0 GHz Rev.V1 Typical Performance Curves @ 5 Volts Step Error vs. State over Frequency Step Error vs. State over Temp @ 5 MHz 1.00 1.00 5 MHz 50 MHz 500 MHz 1000 MHz 0.75 0.50 0.75 0.25 0.25 0.00 0.00 -0.25 -0.25 -0.50 -0.50 -0.75 -0.75 -1.00 0 4 8 12 16 20 24 +25°C -40°C +85°C 0.50 28 32 -1.00 0 4 8 State (dB) 16 20 24 28 32 State (dB) Step Error vs. State over Temp @ 500 MHz Step Error vs. State over Temp @ 1000 MHz 1.00 1.00 0.75 0.75 +25°C -40°C +85°C 0.50 0.25 0.00 0.00 -0.25 -0.25 -0.50 -0.50 -0.75 -0.75 0 4 8 12 16 20 State (dB) 24 28 +25°C -40°C +85°C 0.50 0.25 -1.00 12 32 -1.00 0 4 8 12 16 20 24 28 32 State (dB) 5 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice. MAAD-008866 75 Ω Digital Attenuator, 6-Bit, Serial / Parallel Control 31.5 dB, 0.005 - 1.0 GHz Rev.V1 Typical Performance Curves @ 5 Volts IIP3 vs. Frequency @ 25°C IIP2 vs. Frequency @ 25°C 60 100 90 50 80 70 40 60 30 50 IL 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 20 10 0 0 200 400 600 800 40 IL 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 30 20 10 1000 0 0 200 Frequency (MHz) 400 600 800 1000 Frequency (MHz) IIP3 vs. Frequency @ -40°C IIP2 vs. Frequency @ -40°C 60 100 90 50 80 70 40 60 30 50 IL 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 20 10 0 0 200 400 600 800 40 IL 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 30 20 10 1000 0 0 200 Frequency (MHz) 400 600 800 1000 Frequency (MHz) IIP3 vs. Frequency @ +85°C IIP2 vs. Frequency @ +85°C 100 60 90 50 80 70 40 60 50 30 IL 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 20 10 0 0 200 400 600 Frequency (MHz) 800 40 IL 0.5 dB 1 dB 2 dB 4 dB 8 dB 16 dB 30 20 10 1000 0 0 200 400 600 800 1000 Frequency (MHz) 6 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice. MAAD-008866 75 Ω Digital Attenuator, 6-Bit, Serial / Parallel Control 31.5 dB, 0.005 - 1.0 GHz Rev.V1 Functionality Modes of Operation: Serial, Direct Parallel, and Latched Parallel Mode Truth Table P/S LE Mode 1 X Serial 0 Constant High Direct Parallel 0 Pulsed Latched Parallel Serial Mode The serial control interface (SERIN, CLK, LE, SEROUT) is compatible with the SPI protocol. SPI mode is activated when P/S is kept high. The 6-bit serial word must be loaded with MSB first. After shifting in the 6 bit word, bringing LE high will set the attenuator to the desired state. While LE is high the CLK is masked to protect the data while implementing the change . SEROUT is the SERIN delayed by 6 clock cycles. When P/S is low, the serial control interface is disabled and the serial input register is loaded asynchronously with parallel digital inputs. Direct Parallel Mode The parallel mode is enabled when P/S is set to low. In the direct parallel mode, the attenuator is controlled by the parallel control inputs directly. The LE must be at logic high to control the attenuator in this mode. Latched Parallel Mode In the latched parallel mode, the parallel control inputs will be buffered by registers, and loaded to the outputs when LE is high. The outputs shall not change states when LE is low. Power-up States The power-up (PUP) states will work in both serial and parallel modes, and initiate the attenuator according to the PUP truth table. During power up, the digital inputs shall be held constant for at least 1 μs after VCC reaches 90% of final value. For serial mode, the PUP states will only work when LE is held low. The PUP state shall be locked out after the first LE pulse. 7 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice. MAAD-008866 75 Ω Digital Attenuator, 6-Bit, Serial / Parallel Control 31.5 dB, 0.005 - 1.0 GHz Rev.V1 Functionality Modes of Operation: Serial, Direct Parallel, and Latched Parallel PUP Truth Table Inputs Gain Relative to Max. Gain PS LE PUP2 PUP1 0 0 0 0 -31.5 dB 0 0 0 1 -24 dB 0 0 1 0 -16 dB 0 0 1 1 Insertion Loss 0 1 X X 0 to –31.5 dB (Set VC0.5 - VC16) 1 0 X X 0 to –31.5 dB (Set VC0.5 - VC16) 1 1 X X No Definition Notes Parallel Mode Serial Mode Serial Interface Timing Characteristics Symbol Parameter tSCK Typical Performance Units -40°C 25°C +85°C Min. Serial Clock Period 100 100 100 ns tCS Min. Control Set-up Time 20 20 20 ns tCH Min. Control Hold Time 20 20 20 ns tLS Min. LE Set-up Time 10 10 10 ns tLEW Min. LE Pulse Width 10 10 10 ns tLH Min. Serial Clock Hold Time from LE 10 10 10 ns tLES Min. LE Pulse Spacing 630 630 630 ns 8 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice. MAAD-008866 75 Ω Digital Attenuator, 6-Bit, Serial / Parallel Control 31.5 dB, 0.005 - 1.0 GHz Rev.V1 Functionality Modes of Operation: Serial, Direct Parallel, and Latched Parallel Serial Input Interface Timing Diagram Parallel Control Word tLEW LE tLS tLH 30ns Minimum 9 ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400 is considering for development. Performance is based on target specifications, simulated results, • India Tel: +91.80.43537383 • China Tel: +86.21.2407.1588 and/or prototype measurements. Commitment to develop is not guaranteed. Visit www.macomtech.com for additional data sheets and product information. PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology Solutions has under development. Performance is based on engineering tests. Specifications are typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make Commitment to produce in volume is not guaranteed. changes to the product(s) or information contained herein without notice.