HMC271ALP4 HITTITE | Alldatasheet
Document overview
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Technical content
Features
CMos Compatible serial Data Interface sPI Compatible serial output ±0.4 dB typical Bit error
24 Lead 4x4mm QFn Package: 16mm²
Included in the HMC-DK004 Designer’s Kit Electrical Specifications, TA = +25° C, Vcc = +3V to +5V Typical Applications the HMC271ALP4( e) is a broadband 5-bit positive control GaAs IC digital attenuator with CM os com - patible serial-to-parallel drivers in a low cost lead- less QFn 4x4 mm sMt package. Covering 0.7 to 3.7 GHz, the insertion loss is typically less than 2.5 dB. the attenuator bit values are 1 (L sB), 2, 4, 8, and 16 dB for a total attenuation of 31 dB. Accuracy is excellent at ± 0.4 dB typical with an IIP3 of up to +48 dBm. Five bit CMos compatible serial control words are used to select each attenuation state. A single Vcc bias of +3V to +5V applied through an external 5 kohm resistor is required. the HMC271ALP4(e) is ideal for:
- Cellular/3G Infrastructure
- Fixed Wireless, WiMax & WiBro
- test Instrumentation Parameter Frequency Min. typical Max. units Insertion Loss 0.7 - 1 .4 GHz 1 .4 - 2.3 GHz 2.3 - 2.7 GHz 2.7 - 3.7 GHz 1 .9 2.3 2.6 2.8 2.4 2.8 3.1 3.3 dB dB dB dB Attenuation range 0.7 - 3.7 GHz 31 dB return Loss (rF1 & rF2, All Atten. states) 0.7 - 1 .4 GHz 1 .4 - 2.7 GHz 2.7 - 3.7 GHz dB dB dB Attenuation Accuracy: ( referenced to Insertion Loss) All Attenuation s tates 0.7 - 0.9 GHz 0.9 - 2.2 GHz 2.2 - 3.7 GHz ± (0.4 + 5% of Atten. setting) Max ± (0.4 + 4% of Atten. setting) Max ± (0.4 + 6% of Atten. setting) Max dB dB dB Input Power for 0.1 dB Compression Vcc = 5V Vcc = 3V 0.7 - 3.7 GHz 24 dBm dBm Input third order Intercept Point (two-tone Input Power = 0 dBm each tone) Vcc = 5V Vcc = 3V 0.7 - 3.7 GHz 48 dBm dBm switching Characteristics trIse, tFALL (10/90% rF) ton, toFF (Latch enable to 10/90% rF) 0.7 - 3.7 GHz 750 830 ns ns HMC271ALP4 / 271ALP4E v02.0311
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com AttenuAtors - DIGItAL - sMt 8 - 2 Bit Error vs. Attenuation State Return Loss RF1, RF2 (Only Major States are Shown)Insertion Loss Normalized Attenuation (Only Major States are Shown) Note: All Data Typical Over Voltage (+3V to +5V) & Temperature (-40°C to +85°C). Bit Error vs. Frequency (Only Major States are Shown) Relative Phase vs. Frequency (Only Major States are Shown) -3.5 -2.5 -1.5 -0.5 0.5 1 1.5 2 2.5 3 3.5 4 +25C +85C -40C INSERTION LOSS (dB) FREQUENCY (GHz) -30 -25 -20 -15 -10 0.5 1 1.5 2 2.5 3 3.5 4 RETURN LOSS (dB) FREQUENCY (GHz) 1 dB 16 dB 31 dB 2 dB 8 dB4 dB I.L. -35 -30 -25 -20 -15 -10 0.5 1 1.5 2 2.5 3 3.5 4 NORMALIZED ATTENUATION (dB) FREQUENCY (GHz) -0.5 0.5 1.5 0 4 8 12 16 20 24 28 32 BIT ERROR (dB) ATTENUATION STATE (dB) 2.4 GHz0.9 GHz 1.9 GHz
3.5 GHz
0.5 1 1.5 2 2.5 3 3.5 4 BIT ERROR (dB) FREQUENCY (GHz) 16 dB 31 dB 1, 2, 4 dB8 dB -100 -75 -50 -25 100 0 0.5 1 1.5 2 2.5 3 3.5 4 RELATIVE PHASE (deg.) FREQUENCY (GHz) 31 dB 16 dB 1, 2, 4, 8 dB HMC271ALP4 / 271ALP4E v02.0311 1 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com AttenuAtors - DIGItAL - sMt 8 - 3 Digital Control Voltages Truth Table serial Data Input Attenuation setting rF1 - rF2C1 C2 C4 C8 C16 High High High High High reference I.L. Low High High High High 1 dB High Low High High High 2 dB High High Low High High 4 dB High High High Low High 8 dB High High High High Low 16 dB Low Low Low Low Low 31 dB Max. Atten. Any combination of the above states will provide an attenuation approximately equal to the sum of the bits selected. state Vcc = +5V Vcc = +3V Low 0 to 1.3V 0 to 0.7V High 3.5 to 5V 2.3 to 3V -1.2 -0.8 -0.4 0.4 0.8 1.2 0.5 1 1.5 2 2.5 3 3.5 4 STEP ERROR (dB) FREQUENCY (GHz) Worst Case Step Error Between Successive Attenuation States Timing Diagram Serial Input Truth Table Latch enable shift Clock reset Function X X L shift register cleared X á H shift register clocked á X H Contents of shift register transferred to Digital Attenuator Parameter symbol Vcc = +5V Vcc = +3V units Min. Max. Min. Max. serial Input s etup time ts 20 - 100 - ns Hold time from s erial Input to shift Clock th 0 - 5 - ns setup time from shift Clock to Latch enable tlsup 40 - 100 - ns Propagation delay, Latch enable to C1 through C16 tpd - 30 - 70 ns setup time from reset to shift Clock - 20 - 50 - ns Clock Frequency (1/tclk) fclk - 30 - 10 MHz Timing HMC271ALP4 / 271ALP4E v02.0311 1 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com AttenuAtors - DIGItAL - sMt 8 - 4 Logic / Functional Diagram Programming Example to Select 1 dB Attenuation State HMC271ALP4 / 271ALP4E v02.0311 1 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com AttenuAtors - DIGItAL - sMt 8 - 5 Pin number Function Description Interface s chematic 15, 16, 18 n/C these pins are not connected internally. However, all data shown herein was measured with these pins connected to rF/DC Ground. 2, 17 rF1, rF2 this pin is DC coupled and matched to 50 o hms Blocking capacitors are required. s elect value based on lowest frequency of operation. 5 serial output serial data output. s erial input data delayed by 8 clock cycles. 7 reset see truth table, control voltage table and timing diagram. 8 shift Clock
9 Latch enable
14 Vcc supply Voltage. 19 - 24 GnD Package bottom has an exposed metal paddle that must also be connected to r F/DC Ground. Pin Descriptions HMC271ALP4 / 271ALP4E v02.0311 1 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com AttenuAtors - DIGItAL - sMt 8 - 6 Application Circuit DC blocking capacitors C1 & C2 are required on RF1 & RF2. Choose C1 = C2 = 100 ~ 300 pF to allow lowest customer specific frequency to pass with minimal loss. R1 = 5 kOhm is required to supply voltage to the circuit through either PIN 2 or PIN 17. HMC271ALP4 / 271ALP4E v02.0311 1 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com AttenuAtors - DIGItAL - sMt 8 - 7 Absolute Maximum Ratings Outline Drawing eLeCtrostAtIC sensItIVe DeVICe oBserVe HAnDLInG PreCAutIons
Package Information
notes: 1. LeADFrAMe MAterIAL: CoPPer ALLoY 2. DIMensIons Are In InCHes [MILLIMeters] 3. LeAD sPACInG toLerAnCe Is non-CuMuLAtIVe 4. PAD Burr LenGtH sHALL Be 0.15mm MAXIMuM. PAD Burr HeIGHt sHALL Be 0.05mm MAXIM uM. 5. PACKAGe WArP sHALL not eXCeeD 0.05mm. 6. ALL GrounD LeADs AnD GrounD PADDLe Must Be soLDereD to PCB rF GrounD. 7. reFer to HIttIte APPLICAtIon note For suGGesteD LAnD PAttern. Digital Inputs ( reset, shift Clock, Latch enable & serial Input) -0.5 to (Vcc + 0.5) V Digital o utputs (serial output) -0.5 to (Vcc + 0.5) V DC Current on s erial output ±35 mA Bias Voltage (Vcc) +5.6 V storage temperature -65 to +150 °C operating temperature -40 to +85 °C rF Input Power (0.7 - 3.7 GHz) +26 dBm esD sensitivity (HBM) Class 1A HMC271ALP4 / 271ALP4E v02.0311 1 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz Part number Package Body Material Lead Finish MsL rating Package Marking [3] HMC271ALP4 Low stress Injection Molded Plastic sn/Pb solder MsL1 [1] H271A XXXX HMC271ALP4e roHs-compliant Low s tress Injection Molded Plastic 100% matte sn MsL1 [2] H271A XXXX [1] Max peak reflow temperature of 235 °C [2] Max peak reflow temperature of 260 °C [3] 4-Digit lot number XXXX
For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com Application Support: Phone: 978-250-3343 or apps@hittite.com AttenuAtors - DIGItAL - sMt 8 - 8 Evaluation Circuit Board the circuit board used in the application should use rF circuit design techniques. signal lines sho- uld have 50 ohm impedance while the package ground leads and exposed ground paddle should be connected directly to the ground plane similar to that shown below. A sufficient number of via holes should be used to connect the top and bottom ground planes. the evaluation circuit board as shown is available from Hittite Microwave Corpora - tion upon request. Item Description J1 - J2 PCB Mount sMA Connector J3 18 Pin DC Connector J6, J7 DC Pin C1, C2 100 pF Capacitor, 0402 Pkg. C3 0.01 µF Capacitor, 0402 Pkg. r1 5 kohm resistor, 0402 Pkg. u1 HMC271ALP4(e) Digital Attenuator PCB [2] 108780 evaluation PCB [1] reference this number when ordering complete evaluation PCB [2] Circuit Board Material: r ogers 4350 List of Materials for Evaluation PCB 108782 [1] HMC271ALP4 / 271ALP4E v02.0311 1 dB LSB GaAs MMIC 5-BIT SERIAL CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz