SX1701A ADVANCED COMMUNICATION & SENSING PRODUCTS SX1701A – Datasheet Highly linear wideband LNA Single-channel, single-ended to differential conversion GENERAL DESCRIPTION KEY PRODUCT FEATURES The SX1701A is an integrated LNA operating over a wide frequency range from 40 MHz to 2.5 GHz. It is optimized for high OIP2 and OIP3 with minimum current consumption. It also performs a single-ended to differential conversion with 3 selectable gains. • • • • • • • • APPLICATIONS • • • • • • Digital Set Top Boxes (Satellite and Terrestrial) CATV Distribution Systems Active Splitter Data Communications Systems Active Balun Single-ended input / Differential outputs Programmable gain: 6, 12 and 18 dB High Linearity: OIP2 of 57 dBm and OIP3 of 22 dBm Noise Figure of 7 dB 75 Ω Input impedance 100 Ω differential output impedance Current consumption of 130 mA at maximum gain ESD protection (Normal ESD handling procedures should be observed) Very small package: MLPQ-16, 4 mm x 4 mm (equivalent to QFN-16, 4 mm x 4 mm) ORDERING INFORMATION Part number Temperature range Package Lead Free MLPQ-16 Note: This device is WEEE and RoHS compliant. SX1701AI085TRT -40 °C to +85 °C TYPICAL APPLICATION + 5.0 V SX1701A VDD2 VDD1 GND G1(1:0) RF IN OUTP1 IN Silicon Tuner TV Tuner OUTM1 DEC G1(1) G1(0) Gain control V1.11_STD – August 26th, 2008 1/13 www.semtech.com SX1701A ADVANCED COMMUNICATION & SENSING PRODUCTS Datasheet TABLE OF CONTENTS 1 2 2.1.1 2.1.2 3 3.1 3.2 3.2.1 3.2.2 3.3 4 5 5.1 6 7 8 Simplified Block Diagram..............................................................................................................................3 Pin Description...............................................................................................................................................4 Pin Connections...............................................................................................................................................4 Gain Control Pins.............................................................................................................................................4 Electrical Characteristics ..............................................................................................................................5 Absolute Maximum Ratings .............................................................................................................................5 Specifications ...................................................................................................................................................5 Operating Range..............................................................................................................................................5 Electrical Specifications ...................................................................................................................................6 Typical Operating Characteristics....................................................................................................................7 Application Information.................................................................................................................................9 Application Example with Single-Ended Outputs ....................................................................................10 75 Ω Single-Ended Input to Dual 50 Ω Single-Ended Outputs (Active Splitter) ............................................10 Package Outline Drawing............................................................................................................................11 Marking Information ....................................................................................................................................11 Land Pattern Drawing..................................................................................................................................12 V1.11_STD – August 26th, 2008 2/13 www.semtech.com SX1701A ADVANCED COMMUNICATION & SENSING PRODUCTS 1 Datasheet SIMPLIFIED BLOCK DIAGRAM The simplified block diagram of the SX1701A is illustrated below in Figure 1. VDD2 IN NC NC NC 14 13 12 G1(1) 2 11 OUTP1 3 10 OUTM1 9 G1(0) SX1701A 17 GND 5 6 NC 4 NC DEC 15 7 8 NC 1 16 NC VDD1 NC The amplifier comprises two main stages. The first stage performs the single-ended to differential conversion. The second stage is implemented with two cascaded stages and performs the gain control. Figure 1. Simplified block diagram of the SX1701A. V1.11_STD – August 26th, 2008 3/13 www.semtech.com SX1701A ADVANCED COMMUNICATION & SENSING PRODUCTS 2 Datasheet PIN DESCRIPTION 2.1.1 Pin Connections The pin description of the SX1701A is given in Table 1. Number Name Type Description 1 VDD1 Input Supply voltage 2 VDD2 Input Supply voltage 3 IN Input LNA input 4 DEC Input Decoupling capacitor 5 NC None No Connect 6 NC None No Connect 7 NC None No Connect 8 NC None No Connect 9 G1(0) Input Gain Control 0 10 OUTM1 Output Differential output - 11 OUTP1 Output Differential output + 12 G1(1) Input Gain Control 1 13 NC None No Connect 14 NC None No Connect 15 NC None No Connect 16 NC None No Connect 17 GND Input Ground pad Table 1. Pin description. 2.1.2 Gain Control Pins The gain setting for each channel is given in Table 2. G1(1:0) Description 00 Channel OFF (default value set by pull-down devices) 01 Channel ON, G = 6 dB 10 Channel ON, G = 12 dB 11 Channel ON, G = 18 dB Table 2. Channel gain setting. V1.11_STD – August 26th, 2008 4/13 www.semtech.com SX1701A ADVANCED COMMUNICATION & SENSING PRODUCTS 3 Datasheet ELECTRICAL CHARACTERISTICS 3.1 ABSOLUTE MAXIMUM RATINGS Stresses above the values listed below may cause permanent device failure. Exposure to absolute maximum ratings for extended periods may affect device reliability. Symbol Description Min. Max. Unit VDDmr Supply voltage -0.5 5.5 V Tmr Storage temperature -55 +125 °C Tjmr Junction Temperature - +125 °C Pmr Input level - 0 dBm Min. Max. Unit Table 3. Absolute Maximum ratings. 3.2 SPECIFICATIONS 3.2.1 Operating Range Symbol Description VDDop Supply voltage 4.5 5.3 V Trop Temperature -40 +85 °C Table 4. Operating Range. V1.11_STD – August 26th, 2008 5/13 www.semtech.com SX1701A ADVANCED COMMUNICATION & SENSING PRODUCTS Datasheet 3.2.2 Electrical Specifications The table below gives the electrical specifications of the LNA under the following conditions: VDD = 5.0 V, Temperature = 25 °C, Input frequency = 1 GHz, Gain = 18 dB, Pin = -20dBm, unless otherwise specified. Symbol Description Condition Min Typ Max Unit RIN Input impedance Single-ended - 75 - Ω ROUT Output impedance Differential - 100 - Ω FR Frequency range 0.04 - 2.5 GHz G Gain S21 - 6 - Programmable - 12 - - 18 - GFLAT Gain Flatness Rs = 75 Ω, maximum gain - ±1 - NF Noise figure Rs = 75 Ω G = 18 dB - 7 - G = 12 dB - 9 - G = 6 dB - 13 - - 13 - P1dB OIP3 OIP2 IDD Output P1dB compression point rd Output 3 order intermodulation (differential) nd Output 2 order intermodulation (differential) Current consumption f1 = 1.0 GHz G = 18 dB - 22 - f2 = 1.1 GHz G = 12 dB - 21 - G = 6 dB - 19 - f1 = 1.0 GHz @ f1 + f2 - 53 - f2 = 1.1 GHz @ f2 - f1 - 57 - 1 channel enabled 2 channels enabled 3 channels enabled - 130 200 270 - dB dB dB dBm dBm dBm mA IRL Input Return loss -20.log(ls11l) - 15 dB ORL Output Return loss -20.log(ls i il) - 20 dB ISOUTIN RF out to RF in Isolation -20.log(ls1 il) 50 - - dB ISOUTDWN RF in to RF out isolation in shut down mode -20.log(ls i1l) - 50 - dB CMRR Common mode rejection at the output - 20 - dB VESD ESD robustness on all pins 3 - - kV HBM Table 5. Electrical Specifications. V1.11_STD – August 26th, 2008 6/13 www.semtech.com SX1701A ADVANCED COMMUNICATION & SENSING PRODUCTS Datasheet 3.3 TYPICAL OPERATING CHARACTERISTICS The curves below give the typical RF performances of the LNA under the following conditions: VDD = 5.0 V, Temperature = 25 °C, Z Source = 75Ω, ZLoad = 100Ω differential, Frequency range = 40 MHz to 2.5 GHz, input matching network according to application schematics of figure 4. Gain Input and Output Return Loss (Gain = 18dB) 20 0 0 G=18dB -10 15 -10 10 IRL -20 -20 ORL (dB) IRL (dB) Gain (dB) G=12dB G = 6dB -30 5 -30 ORL -40 0 0 0.5 1 1.5 2 -40 0 2.5 0.5 1.5 2 2.5 Frequency (GHz) Frequency (GHz) Noise Figure Output IP2 & IP3 (Gain = 18dB) 80 14 40 f2 = f1 + 0.1 GHz 13 70 OIP2 (dBm) 11 10 G=12dB 9 8 30 OIP3 60 20 50 G=18dB OIP3 (dBm) G = 6dB 12 NF (dB) 1 10 OIP2 7 6 40 0 0.5 1 1.5 2 2.5 0 0 0.5 1 Frequency (GHz) 1.5 2 2.5 2 2.5 f1 (GHz) Gain Compression Common Mode Rejection 50 20 G=18dB G=18dB 40 15 CMMR (dB) Gain (dB) G=12dB 10 30 G=12dB 20 G=6dB G=6dB 5 10 0 0 -15 -10 -5 0 0 5 0.5 1 1.5 Frequency (GHz) Input power (dBm) Figure 2. Typical Operating Characteristics Curves. th V1.11_STD – August 26 , 2008 7/13 www.semtech.com SX1701A ADVANCED COMMUNICATION & SENSING PRODUCTS 4 Datasheet APPLICATION INFORMATION Figure 4, below, shows the recommended board schematic. Typical component values are shown and are subject to change depending on the PCB layout and material used. Please refer to the Semtech SX1701A reference design at www.semtech.com. + 5.0 V 2 1 10nF X7R 0603 1nF X7R 0603 470pF 17 C0G 0603 75 Ω RF IN 0.3pF C0G 0603 3 470pF C0G 0603 SX1701A VDD2 3K3 0603 VDD1 G1(1) GND OUTP1 IN OUTM1 DEC 10 G1(0) 9 100 Ω RF BALANCED OUTPUT 470pF C0G 0603 Gain control 0 3K3 0603 NC NC NC NC 7 NC 6 NC 5 NC NC 470pF C0G 0603 Gain control 1 470pF C0G 0603 11 3.9nH wirewound 0603 4 12 8 13 14 15 16 Figure 4. Application board schematic. V1.11_STD – August 26th, 2008 9/13 www.semtech.com SX1701A ADVANCED COMMUNICATION & SENSING PRODUCTS 5 Datasheet APPLICATION EXAMPLE WITH SINGLE-ENDED OUTPUTS Although intended for differential output operation, the SX1701A may be used in the single-ended outputs configuration of Figure 5. Note that some degradation in device performance may be experienced, including a 3 dB reduction in power gain. 5.1 75 Ω SINGLE-ENDED INPUT TO DUAL 50 Ω SINGLE-ENDED OUTPUTS (ACTIVE SPLITTER) + 5.0 V 2 1 10nF X7R 0603 1nF X7R 0603 470pF 17 C0G 0603 75 Ω RF IN 0.3pF C0G 0603 3 470pF C0G 0603 SX1701A VDD2 3K3 0603 VDD1 G1(1) GND OUTP1 IN Gain control 1 470pF C0G 0603 50 Ω RF OUTPUT 1 11 3.9nH wirewound 0603 OUTM1 4 12 DEC 10 G1(0) 9 50 Ω RF OUTPUT 2 Gain control 0 3K3 0603 NC NC NC NC 7 NC 6 NC 5 NC NC 470pF C0G 0603 470pF C0G 0603 8 13 14 15 16 Figure 5. Active balun application example. V1.11_STD – August 26th, 2008 10/13 www.semtech.com SX1701A ADVANCED COMMUNICATION & SENSING PRODUCTS 6 Datasheet PACKAGE OUTLINE DRAWING SX1701A is assembled in a MLPQ-16, 4 mm x 4 mm as shown in Figure 6. Figure 6. Package outline drawing. 7 MARKING INFORMATION 1701A yyww xxxxx xxxxx Notes: 1. 1701A = Product code (SX1701A) 2. yyww = Datecode (Example 0824) 3. xxxxx = Lot number Figure 7. Marking information. V1.11_STD – August 26th, 2008 11/13 www.semtech.com SX1701A ADVANCED COMMUNICATION & SENSING PRODUCTS 8 Datasheet LAND PATTERN DRAWING The land pattern of MLPQ-16 package, 4 mm x 4 mm is shown in Figure 8. Figure 8. Land pattern drawing. V1.11_STD – August 26th, 2008 12/13 www.semtech.com SX1701A ADVANCED COMMUNICATION & SENSING PRODUCTS Datasheet © Semtech 2008 All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent or other industrial or intellectual property rights. Semtech assumes no responsibility or liability whatsoever for any failure or unexpected operation resulting from misuse, neglect improper installation, repair or improper handling or unusual physical or electrical stress including, but not limited to, exposure to parameters beyond the specified maximum ratings or operation outside the specified range. SEMTECH PRODUCTS ARE NOT DESIGNED, INTENDED, AUTHORIZED OR WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT APPLICATIONS, DEVICES OR SYSTEMS OR OTHER CRITICAL APPLICATIONS. INCLUSION OF SEMTECH PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE UNDERTAKEN SOLELY AT THE CUSTOMER’S OWN RISK. Should a customer purchase or use Semtech products for any such unauthorized application, the customer shall indemnify and hold Semtech and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney fees which could arise. Contact Information Semtech Corporation Advanced Communications and Sensing Products Division 200 Flynn Road, Camarillo, CA 93012 Phone (805) 498-2111 Fax : (805) 498-3804 V1.11_STD – August 26th, 2008 13/13 www.semtech.com