Freescale Semiconductor Technical Data Document Number: MMT20303H Rev. 0, 12/2015 3--Bit Digital Step Attenuator The MMT20303H is an integrated 3--bit digital step attenuator with a 1 dB step size. It is controlled via a 3--bit parallel interface and operates from a 3 to 5 V supply. The MMT20303H is suitable for 3G/4G small cell transmitter and mobile radio applications using frequencies from 50 to 4000 MHz. MMT20303HT1 Features 50–4000 MHz, 3 Bit 1 dB LSB Frequency: 50–4000 MHz Maximum RF Input Power: 30 dBm (CW) Typical IIP3 > 50 dBm Programmable Attenuator with 7 dB Maximum Range, 1 dB Step Size Low Insertion Loss 0.1 dB Typical Bit Error Excellent Consistency over Temperature and Supply Voltage Single 3 to 5 V Supply 50 Ohm Operation P1dB Independent of Control Voltage 3--bit Digital Control TTL/CMOS Interface Compatible Cost--effective 16--pin, 3 mm QFN Surface Mount Plastic Package QFN 3 3 PLASTIC Table 1. Typical Performance (1) Characteristic Symbol 250 MHz 900 MHz 4000 MHz Unit IL –0.6 –0.7 –1.3 dB Insertion Loss Attenuation Accuracy (Worst Case State) — +0.1, –0.1 +0.1, 0 +0.1, –0.1 dB Third Order Intercept Input Point (2) IIP3 47 54 52 dBm Power Input @ 1 dB Compression P1dB 30 35 (3) 35 (3) dBm 1. VDD = 5 Vdc, TA = 25C, 50 ohm system, application circuit tuned for specific frequency. 2. Two--tone input power = +13 dBm each tone. 3. Operate within specified maximum rating. VDD b2 b1 b0 RFin RFout 2 dB 1 dB 4 dB Figure 1. Functional Block Diagram Freescale Semiconductor, Inc., 2015. All rights reserved. RF Device Data Freescale Semiconductor, Inc. MMT20303HT1 1 Table 2. Maximum Ratings Rating Supply Voltage Symbol Value Unit VDD 6 V RF Input Power Pin 30 dBm Storage Temperature Range Tstg –65 to +150 C Case Operating Temperature Range TC –40 to +85 C Junction Temperature TJ 175 C Table 3. Electrical Characteristics (VDD = 5 Vdc, 900 MHz, TA = 25C, 50 ohm system, in Freescale Application Circuit) Characteristic Symbol Min Typ Max Unit Insertion Loss 1 (50–900 MHz) IL1 — 0.6 1.0 dB Insertion Loss 2 (1000–2500 MHz) IL2 — 0.8 — dB Insertion Loss 3 (2500–4000 MHz) IL3 — 1.2 — dB Input Return Loss (S11) IRL — 20 — dB Output Return Loss (S22) ORL — 20 — dB R — 7 — dB R — 1 — dB — — 0.1 0.25 dB Turn--on Time ton — 60 — ns Turn--off Time toff — 100 — ns Power Output @ 1dB Compression P1dB — 35 — dBm Third Order Input Intercept Point @ 5 V IIP35 — 50 — dBm Third Order Input Intercept Point @ 3 V Attenuation Control Maximum Range Attenuation Step Attenuation Accuracy IIP33 — 50 — dBm Max Input Voltage Logic Low @ 100 A, 3 V VIL — — 0.8 V Min Input Voltage Logic High @ 100 A, 3 V VIH 2.3 — — V IDD — 2 3 mA Supply Current @ 5 V Table 4. ESD Protection Characteristics Test Methodology Class Human Body Model (per JESD22--A114) 1A Machine Model (per EIA/JESD22--A115) A Charge Device Model (per JESD22--C101) III Table 5. Moisture Sensitivity Level Test Methodology Per JESD22--A113, IPC/JEDEC J--STD--020 Rating Package Peak Temperature Unit 1 260 C Table 6. Ordering Information Device MMT20303HT1 Tape and Reel Information T1 Suffix = 1,000 Units, 12 mm Tape Width, 7--inch Reel Package QFN 3 3 MMT20303HT1 2 RF Device Data Freescale Semiconductor, Inc. Table 7. Functional Pin Description Pin Number Pin Function 1, 3, 4, 5, 8, 9, 10, 12 N.C. No Connection Pin Description VDD 16 b2 b1 b0 15 14 13 2 RFin RF Input N.C. 1 12 N.C. 6, 7 ACG (1) AC Ground RFin 2 11 11 RFout RF Output RFout 13 b0 Attenuator Bit 0 (active low) N.C. 3 10 N.C. 14 b1 Attenuator Bit 1 (active low) N.C. 4 9 15 b2 Attenuator Bit 2 (active low) 16 VDD 5 Supply Voltage 6 7 N.C. 8 N.C. ACG1 ACG2 N.C. 1. AC ground connection for operation below 700 MHz. (Top View) Note: Exposed backside of the package is DC and RF ground. N.C. can be connected to GND. Figure 2. Pin Connections Table 8. Logic Truth Table State Attenuation (dB) H 111 0 H 011 1 L H 101 2 L H 001 3 H H L 110 4 L H L 010 5 H L L 100 6 L L L 000 7 b2 b1 b0 H H L H H L MMT20303HT1 RF Device Data Freescale Semiconductor, Inc. 3 50 OHM APPLICATION CIRCUIT: 50–4000 MHz, 5 VOLT OPERATION VDD VCTL R1 C4 16 b1 b2 b0 15 14 13 1 12 RF INPUT RF OUTPUT 2 11 C1 C2 3 10 4 9 5 6 7 8 C3 Figure 3. MMT20303HT1 Test Circuit Schematic Table 9. MMT20303HT1 Test Circuit Component Designations and Values Part Description Part Number Manufacturer C1, C2, C4 0.1 F Chip Capacitors GRM155R61A104KA01D Murata C3 3300 pF Chip Capacitor GRM1557U1A332JA01D Murata J1, J2, J3 3--pin Header 22--28--8360 Molex R1 1000 , 1/16 W Chip Resistor RC0402FR--071KL Yageo PCB Rogers RO4350B, 0.010, r = 3.66 M60818 MTL MMT20303HT1 4 RF Device Data Freescale Semiconductor, Inc. VCTL VDD 50 OHM APPLICATION CIRCUIT: 50–4000 MHz, 5 VOLT OPERATION R1 b2 b1 J2 J1 b0 J3 Com RFIN RFOUT C4 C1 C2 C3 QFN 33 16A Rev. 1 PCB actual size: 1.25 1.62. Figure 4. MMT20303HT1 Test Circuit Component Layout Table 9. MMT20303HT1 Test Circuit Component Designations and Values Part Description Part Number Manufacturer C1, C2, C4 0.1 F Chip Capacitors GRM155R61A104KA01D Murata C3 3300 pF Chip Capacitor GRM1557U1A332JA01D Murata J1, J2, J3 3--pin Header 22--28--8360 Molex R1 1000 , 1/16 W Chip Resistor RC0402FR--071KL Yageo PCB Rogers RO4350B, 0.010, r = 3.66 M60818 MTL (Test Circuit Component Designations and Values table repeated for reference.) MMT20303HT1 RF Device Data Freescale Semiconductor, Inc. 5 50 OHM APPLICATION CIRCUIT: 50–4000 MHz, 5 VOLT OPERATION 180 –0.4 135 INSERTION PHASE () INSERTION LOSS (dB) –0.6 –0.8 –40C –1 25C –1.2 85C –1.4 0 45 0 –45 –90 –135 VDD = 5 Vdc –1.6 90 1000 2000 f, FREQUENCY (MHz) 3000 Figure 5. Insertion Loss versus Frequency versus Temperature 4000 –180 VDD = 5 Vdc 0 1000 2000 f, FREQUENCY (MHz) 3000 4000 Figure 6. Insertion Phase versus Frequency versus Temperature (–40C, 25C, 85C) MMT20303HT1 6 RF Device Data Freescale Semiconductor, Inc. 50 OHM APPLICATION CIRCUIT: 50–4000 MHz, 5 VOLT OPERATION –10 –10 –15 –15 State = 111 State = 111 –20 S22 (dB) S11 (dB) State = 000 State = 000 –20 –25 State = 101 –30 State = 110 State = 101 –25 –30 State = 011 State = 011 –35 –40 VDD = 5 Vdc 0 1000 –35 State = 110 VDD = 5 Vdc 2000 f, FREQUENCY (MHz) 3000 4000 –40 1000 0 2000 3000 4000 f, FREQUENCY (MHz) Figure 7. S11 versus Frequency Figure 8. S22 versus Frequency 1 State = 111 0 State = 011 ATTENUATION (dB) –1 State = 101 –2 –3 State = 110 –4 –5 –6 State = 000 –7 –8 VDD = 5 Vdc 0 1000 2000 f, FREQUENCY (MHz) 3000 4000 Attenuation Error Due to Temperature Major Setting Temperature Range Attenuation due to Temperature 0 dB –40C to 85C 0 dB 1 dB 0.08 dB 2 dB 0.08 dB 4 dB 0.08 dB 7 dB 0.20 dB Figure 9. Attenuation versus Frequency MMT20303HT1 RF Device Data Freescale Semiconductor, Inc. 7 50 OHM APPLICATION CIRCUIT: 50–4000 MHz, 5 VOLT OPERATION 62 6 5 State = 110 60 3 2 IIP3 (dBm) PHASE SHIFT () 4 State = 000 1 State = 111 0 –1 –3 VDD = 5 Vdc 0 1000 State = 011 2000 3000 58 State = 111 56 54 State = 101 –2 State = 000 4000 VDD = 5 Vdc 52 900 1350 f, FREQUENCY (MHz) 1800 2250 2700 f, FREQUENCY (MHz) Figure 10. Phase Shift versus Frequency Figure 11. IIP3 versus Frequency 3150 3600 35 INPUT P0.1dB 34 33 32 State = 111 31 VDD = 5 Vdc 30 500 1000 2000 2500 1500 f, FREQUENCY (MHz) 3000 3500 Figure 12. Input P0.1dB versus Frequency MMT20303HT1 8 RF Device Data Freescale Semiconductor, Inc. 3.0 3.0 0.70 0.30 2.00 3.40 x 0.50 1.6 1.6 solder pad with thermal via structure. All dimensions in mm. Figure 13. PCB Pad Layout for QFN 3 3, 16 Lead MT01 WLYW Figure 14. Product Marking MMT20303HT1 RF Device Data Freescale Semiconductor, Inc. 9 PACKAGE DIMENSIONS MMT20303HT1 10 RF Device Data Freescale Semiconductor, Inc. MMT20303HT1 RF Device Data Freescale Semiconductor, Inc. 11 MMT20303HT1 12 RF Device Data Freescale Semiconductor, Inc. PRODUCT DOCUMENTATION AND TOOLS Refer to the following resources to aid your design process. Application Notes AN1955: Thermal Measurement Methodology of RF Power Amplifiers Development Tools Printed Circuit Boards To Download Resources Specific to a Given Part Number: 1. Go to http://www.freescale.com/rf 2. Search by part number 3. Click part number link 4. Choose the desired resource from the drop down menu FAILURE ANALYSIS At this time, because of the physical characteristics of the part, failure analysis is limited to electrical signature analysis. In cases where Freescale is contractually obligated to perform failure analysis (FA) services, full FA may be performed by third party vendors with moderate success. For updates contact your local Freescale Sales Office. REVISION HISTORY The following table summarizes revisions to this document. Revision Date 0 Dec. 2015 Description Initial release of data sheet MMT20303HT1 RF Device Data Freescale Semiconductor, Inc. 13 How to Reach Us: Home Page: freescale.com Web Support: freescale.com/support Information in this document is provided solely to enable system and software implementers to use Freescale products. There are no express or implied copyright licenses granted hereunder to design or fabricate any integrated circuits based on the information in this document. Freescale reserves the right to make changes without further notice to any products herein. Freescale makes no warranty, representation, or guarantee regarding the suitability of its products for any particular purpose, nor does Freescale assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters that may be provided in Freescale data sheets and/or specifications can and do vary in different applications, and actual performance may vary over time. All operating parameters, including “typicals,” must be validated for each customer application by customer’s technical experts. Freescale does not convey any license under its patent rights nor the rights of others. Freescale sells products pursuant to standard terms and conditions of sale, which can be found at the following address: freescale.com/SalesTermsandConditions. Freescale and the Freescale logo are trademarks of Freescale Semiconductor, Inc., Reg. U.S. Pat. & Tm. Off. All other product or service names are the property of their respective owners. E 2015 Freescale Semiconductor, Inc. MMT20303HT1 14 Document Number: MMT20303H Rev. 0, 12/2015 RF Device Data Freescale Semiconductor, Inc.