Surface Mount Digital Step Attenuator 75Ω 0 to 15.5 dB, 0.5 dB Step DAT-15575A Series 1MHz to 2.5 GHz The Big Deal • Wideband, operates up to 2.5 GHz • Glitchless attenuation transitions • High IP3, 52 dBm CASE STYLE: DG983-2 Product Overview The DAT-15575A+ series of 75Ω digital step attenuators provides adjustable attenuation from 0 to 15.5 dB in 0.5 dB steps. The control is a 5-bit serial/parallel interface, and the attenuators operate with either single positive or dual (positive and negative) supply voltage. DAT-15575A+ series models are produced by a unique CMOS process on silicon, offering the performance of GaAs with the advantages of conventional CMOS devices. Key Features Feature Advantages Wideband operation, specified from 1MHz to 2.5 GHz Can be used in multiple applications such as various versions of DOCSIS, satellite and defense, reducing part count. Serial or parallel interface Models available with serial or parallel interface mode to suit customer demand. Good VSWR, 1.3:1 typ. Eases interfacing with adjacent components and results in low amplitude ripple. Single positive supply models: (Model suffixes: -SP+ and –PP+) +2.3 to +3.6V+ Use of single positive supply simplifies power supply design. An internal negative voltage generator supplies the desired negative voltage. Single positive supply results in excellent spurious performance, -140 dBm typical. Dual supply models: (Model suffixes: -SN+ and –PN+) +2.7 to +3.6V (Positive) and -3.6 to -3.2V (Negative) Dual supply provides spurious-free operation. It also allows fast switching up to 1 MHz (vs. 25 kHz for single supply). Useable over a wide range of supply voltages, +2.3/2.7 to 5.2V Wide range fo positive operating voltages allows the DAT-15575A+ Series of models to be used in a wide range of applications. See Application Note AN-70-032 for operation above +3.6V Footprint compatible to DAT-15575-XX+ Series (XX=SN/SP/PN/PP) Can fit into existing footprint and provide wideband performance, to 2.5 GHz instead of 2.0 GHz. Glitchless Attenuation Transitions, 0.26 typical Compared to previous generation of digital attenuatiors which is a vast improvement. Mini-Circuits ® www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 [email protected] Page 1 of 8 Digital Step Attenuator 75W 1-2500 MHz 15 dB, 0.5 dB Step 5 Bit, Parallel Control Interface, Single Supply Voltage • Single positive supply voltage • Immune to latch up • Glitchless attenuation transitions • Excellent accuracy, 0.1 dB Typ • Low Insertion Loss • High IP3, +55-59 dBm Typ • Very low DC power consumption • Excellent return loss, 18 dB Typ • Small size 4.0 x 4.0 mm DAT-15575A-PP+ CASE STYLE: DG983-2 +RoHS Compliant Typical Applications • DOCSIS 3.1 • Portable Wireless • CATV & DBS • MMDS & Wireless LAN • Wireless Local Loop • UNII & Hiper LAN • Power amplifier distortion canceling loops The +Suffix identifies RoHS Compliance. See our web site for RoHS Compliance methodologies and qualifications General Description The DAT-15575A-PP+ is a 75W RF digital step attenuator that offers an attenuation range up to 15.5 dB in 0.5 dB steps. The control is a 5-bit parallel interface, operating on single (positive) supply voltage. The DAT15575A-PP+ is produced using a unique CMOS process on silicon, offering the performance of GaAs, with the advantages of conventional CMOS devices. Simplified Schematic RF Input Parallel Control Latch Enable 8dB 4dB 2dB 1dB 0.5dB RF Out Control Logic Interface Mini-Circuits ® www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 [email protected] REV. OR M155582 DAT-15575A-PP+ RS/CP 160908 Page 2 of 8 Digital Step Attenuator DAT-15575A-PP+ RF Electrical Specifications, 1-2500 MHz, TAMB=25°C, VDD=+3V, 75Ω Freq. Range (GHz) Min. Typ. Max. 0.001-1.2 — 0.03 0.17 1.2-2.0 — 0.05 0.18 2.0-2.5 — 0.1 0.19 0.001-1.2 — 0.03 0.18 1.2-2.0 — 0.1 0.20 2.0-2.5 — 0.1 0.23 0.001-1.2 — 0.07 0.21 1.2-2.0 — 0.15 0.26 2.0-2.5 — 0.15 0.31 0.001-1.2 — 0.05 0.27 1.2-2.0 — 0.15 0.36 2.0-2.5 — 0.2 0.47 0.001-1.2 — 0.1 0.39 1.2-2.0 — 0.24 0.60 2.0-2.5 — 0.35 0.79 0.001-1.2 — 1.2 1.8 1.2-2.5 — 1.6 1.9 0.001-1.2 — 1.3 — 1.2-2.5 — 1.4 — Input IP3 (at Min. and Max. Attenuation) .005-2.5 — 55-69 — Input IP2 .005-2.5 Input Power @ 0.2dB Compression (at Min. and Max. Attenuation) 0.030-2.5 — +30 — 1 MHz to 30 MHz — — See Fig. 2 >30 MHz — — +24 — — 25 — Parameter Accuracy @ 0.5 dB Attenuation Setting Accuracy @ 1 dB Attenuation Setting Accuracy @ 2 dB Attenuation Setting Accuracy @ 4 dB Attenuation Setting Accuracy @ 8 dB Attenuation Setting Insertion Loss1 @ all attenuator set to 0dB VSWR Input Operating Power Thermal Resistance (Junction to case) DC Electrical Specifications Parameter Typ. Max. Units Vdd, Supply Voltage 2.3 3 3.62 V Idd, Supply Current — — 200 Control Input Low -0.3 — Control Input High 1.17 — — — dB dB dB dB :1 dBm dBm Parameter dBm dBm °C/W Min. Typ. Max. Units µA Switching Speed, 50% Control to 90% or 10% RF — 0.4 0.7 µSec 0.63 V Switching Control Frequency — — 25 kHz 3.6 V 20 µA 120 100 Absolute Maximum Ratings4 Ratings Operating Temperature -40°C to 105°C Storage Temperature -65°C to 150°C Vdd -0.3V Min., 5.5V Max. Voltage on any input -0.3V Min., 3.6V Max. 1-30 MHz Figure 2 30-2500MHz +30dBm IIP2 (dBm) 3. 0V during power-up. Input Power dB See Fig. 1 1. I. Loss values are de-embedded from test board Loss (test board’s Insertion Loss: 0.10dB @100MHz, 0.40dB @1200MHz, 0.55dB @2000MHz, 0.75dB @4000MHz). 2. For operation above +3.6V see application note, AN-70-032 Parameter dB Switching Specifications Min. Control Current Units 80 0 dB 60 31.5 dB 40 20 0 5 50 500 5000 Frequency (MHz) 4. Permanent damage may occur if any of these limits are exceeded. 5. Operation between max operating and absolute max input power will result in reduced reliability. 6. 0 Volt during power up. Figure 1. IP2 vs. frequency and attenuation Mini-Circuits ® www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 [email protected] Page 3 of 8 9 VDD 8 N/C GND 10 7 6 N/C VDD Digital Step Attenuator DAT-15575A-PP+ Parallel 7 Not connected (Note 7) PUP2 8 Power-up selection VDD 9 Positive Supply Voltage GND 10 Ground connection GND 11 Ground connection GND 12 Ground connection (Note 6) GND 13 Ground connection RF out 14 RF out port (Note 1) C8 15 Control for attenuation bit, 8 dB C4 16 Control for attenuation bit, 4 dB C2 17 Control for attenuation bit, 2 dB GND 18 Ground Connection C1 19 Control for attenuation bit, 1 dB C0.5 20 Control for attenuation bit, 0.5 dB (Note 7) GND Paddle 5 C4 N/C LE C2 Positive Supply Voltage 4 16 6 3 17 VDD N/C GND 9 Latch Enable Input (Note 2) 10 5 2x2mm Paddle ground VDD LE 2 GND Ground connection RFin GND 4 1 18 GND N/C PUP2 Not connected (Note 4) C1 RF in port (Note 1) 3 8 2 N/C C0.5 RF in 19 Not connected (Note 4,7) 7 1 6 N/C Description N/C Pin Number VDD Function 20 Pin Configuration (Top View) Pin Description 15 C8 14 RFout 13 GND 12 GND 11 GND Device Marking Pin 1 Index MCL DS75 Paddle ground (Note 5) Notes: 1. Both RF ports must be held at 0VDC or DC blocked with an external series capacitor. 2. Latch Enable (LE) has an internal 2MW to internal positive supply voltage. 3. N/A 4. Place a shunt 10KW resistor to GND 5. The exposed solder pad on the bottom of the package (See Pin configuration) must be grounded for proper device operation. 6. Ground must be less than 80 mil (0.08”) from Pin 12 for proper device operation. Input Power (dBm) 7. This pin has an internal 1MΩ resistor to ground. 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 Absolute Max Power Max Operating-Pulsed (>= 30 MHz) Max Operating -CW & Pulsed (< 30 MHz) Max Operating-CW (≥ 30 MHz) 1.0 10.0 100.0 Frequency (MHz) 1000.0 Figure 2. Max Input power vs. frequency. Pulsed Power: 5% duty cycle, 4620 µS period Mini-Circuits ® www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 [email protected] Page 4 of 8 Digital Step Attenuator DAT-15575A-PP+ Simplified Schematic RF Input 8dB 4dB Parallel Control 2dB 1dB 0.5dB RF Out Control Logic Interface Latch Enable The DAT-15575A-PP+ parallel interface consists of 5 control bits that select the desired attenuation state, as shown in Table 1: Truth Table Table 1. Truth Table Attenuation State C8 C4 C2 C1 C0.5 Reference 0 0 0 0 0 0.5 (dB) 0 0 0 0 1 1 (dB) 0 0 0 1 0 2 (dB) 0 0 1 0 0 4 (dB) 0 1 0 0 0 8 (dB) 1 0 0 0 0 15.5 (dB) 1 1 1 1 1 Note: Not all 32 possible combinations of C0.5 - C8 are shown in table The parallel interface timing requirements are defined by Figure 3 (Parallel Interface Timing Diagram) and Table 2 (Parallel Interface AC Characteristics), and switching speed. For latched parallel programming the Latch Enable (LE) should be held LOW while changing attenuation state control values, then pulse LE HIGH to LOW (per Figure 1) to latch new attenuation state into device. For direct parallel programming, the Latch Enable (LE) line should be pulled HIGH. Changing attenuation state control values will change device state to new attenuation. Direct mode is ideal for manual control of the device (using hardwire, switches, or jumpers). Figure 3: Parallel Interface Timing Diagram Table 2. Parallel Interface AC Characteristics Symbol LE Parallel Data C8:C0.5 tPDSUP tLEPW Parameter Min. Max. Units tLEPW LE minimum pulse width 10 ns tPDSUP Data set-up time before clock rising edge of LE 10 ns tPDHLD Data hold time after clock falling edge of LE 10 ns tPDHLD Mini-Circuits ® www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 [email protected] Page 5 of 8 Digital Step Attenuator DAT-15575A-PP+ Power-up Control Settings The DAT-15575A-PP+ always assumes a specifiable attenuation setting on power-up, allowing a known attenuation state to be established before an initial parallel control word is provided. When the attenuator powers up with LE=0, the control bits are automatically set to one of two possible values .These two values are selected by the power-up control bit, PUP2, as shown in Table 3: (Power-Up Truth Table, Parallel Mode). Table 3. Power-Up Truth Table, Parallel Mode Attenuation State PUP2 LE Reference 0 0 8 (dB) 1 0 Defined by C0.5-C8 (See Table 1-Truth Table) X (Note 1) 1 Note 1: PUP2 Connection may be 0, 1, GROUND, or not connect, without effect on attenuation state. Power-Up with LE=1 provides normal parallel operation with C0.5-C8 and PUP2 is not active. Mini-Circuits ® www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 [email protected] Page 6 of 8 Digital Step Attenuator DAT-15575A-PP+ Mini-Circuits ® www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 [email protected] Page 7 of 8 Digital Step Attenuator DAT-15575A-PP+ Additional Detailed Technical Information additional information is available on our dash board. To access this information click here Data Table Performance Data Swept Graphs S-Parameter (S2P Files) Data Set (.zip file) Case Style DG983-2 Plastic package, exposed paddle, lead finish: NiPdAu Tape & Reel F87 Standard quantities available on reel 7” reels with 20, 50, 100, 200, 500 Or 1000 devices 13” reels with 3K devices Suggested Layout for PCB Design PL-201 Evaluation Board TB-337 Environmental Ratings ENV33T1 ESD Rating Human Body Model (HBM): Class 1C (1000 to <2000V) in accordance with MIL-STD-883 method 3015 Charge Device Model class C2 (500 to <1000V) per JESD22-C101 MSL Rating Moisture Sensitivity: MSL1 in accordance with IPC/JEDEC J-STD-020D MSL Test Flow Chart Start Visual Inspection Electrical Test SAM Analysis Reflow 3 cycles, 260°C Soak 85°C/85RH 168 hours Bake at 125°C, 24 hours Visual Inspection Electrical Test SAM Analysis Finish Additional Notes A. Performance and quality attributes and conditions not expressly stated in this specification document are intended to be excluded and do not form a part of this specification document. B. Electrical specifications and performance data contained in this specification document are based on Mini-Circuit’s applicable established test performance criteria and measurement instructions. C. The parts covered by this specification document are subject to Mini-Circuits standard limited warranty and terms and conditions (collectively, “Standard Terms”); Purchasers of this part are entitled to the rights and benefits contained therein. For a full statement of the Standard Terms and the exclusive rights and remedies thereunder, please visit Mini-Circuits’ website at www.minicircuits.com/MCLStore/terms.jsp Mini-Circuits ® www.minicircuits.com P.O. Box 350166, Brooklyn, NY 11235-0003 (718) 934-4500 [email protected] Page 8 of 8