SX1701B ADVANCED COMMUNICATION & SENSING PRODUCTS SX1701B – Datasheet Highly linear wideband LNA Multi-channel, single-ended to differential conversion GENERAL DESCRIPTION KEY PRODUCT FEATURES The SX1701B 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. Two independent output channels are available and the gain of each may be adjusted independently. • • APPLICATIONS • • • • • • Single-ended input / Dual differential outputs Independent programmable gain for each channel: 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 with one channel enabled 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) • • • • • Digital Set Top Boxes (Satellite and Terrestrial) CATV Distribution Systems Active Splitter Data Communications Systems Active Balun • ORDERING INFORMATION Part number Temperature range Package Lead Free MLPQ-16 Note: This device is WEEE and RoHS compliant. SX1701BI085TRT -40 °C to +85 °C TYPICAL APPLICATION + 5.0 V G2(1:0) SX1701B VDD2 OUTP2 VDD1 OUTM2 GND RF IN TV Tuner IN Silicon Tuner G1(1:0) DEC OUTP1 DVR Tuner G2(1) G2(0) G1(1) G1(0) OUTM1 Gain control V1.11_STD – August 26th, 2008 1/13 www.semtech.com SX1701B 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....................................................................................................................................10 Single-Ended Input to 1 Differential Outputs with Loop-through Single-Ended OUTPUT.............................10 Package Outline Drawing............................................................................................................................11 Marking Information ....................................................................................................................................11 Land Pattern Drawing..................................................................................................................................12 V1.11_STD – August 26th, 2008 2/13 www.semtech.com SX1701B ADVANCED COMMUNICATION & SENSING PRODUCTS 1 Datasheet SIMPLIFIED BLOCK DIAGRAM The simplified block diagram of the SX1701B is illustrated below in Figure 1. G2(1) OUTP2 OUTM2 G2(0) The amplifier comprises two main stages. The first stage is common to both channels and performs the single-ended to differential conversion. The second stage, duplicated for both channels, is implemented as two cascaded stages and performs independently the gain control for each channel. 16 15 14 13 VDD1 1 12 NC VDD2 2 11 NC 10 NC 9 NC SX1701B 6 7 8 G1(1) 5 OUTP1 4 17 GND OUTM1 DEC 3 G1(0) IN Figure 1. Simplified block diagram of the SX1701B. V1.11_STD – August 26th, 2008 3/13 www.semtech.com SX1701B ADVANCED COMMUNICATION & SENSING PRODUCTS 2 Datasheet PIN DESCRIPTION 2.1.1 Pin Connections The pin description of the SX1701B 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 G1(0) Input Control of the 1st channel 6 OUTM1 Output Differential output 1st Channel 7 OUTP1 Output Differential output 1st Channel 8 G1(1) Input Control of the 1st channel 9 NC None No Connect 10 NC None No Connect 11 NC None No Connect 12 NC None No Connect 13 G2(0) Input Control of the 3rd channel 14 OUTM2 Output Differential output 3rd Channel 15 OUTP2 Output Differential output 3rd Channel 16 G2(1) Input Control of the 3rd channel 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. Gi(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. Note: For applications that require less than 3 outputs, the unused differential outputs and the corresponding channel gain setting pins can be left floating. The default channel gain setting is “channel OFF [0:0]” (set by internal pull down resistors). V1.11_STD – August 26th, 2008 4/13 www.semtech.com SX1701B 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 SX1701B 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 GHz FR Frequency range G Gain 0.04 - 2.5 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) ISOUTOUT RF out i to RF out j isolation -20.log(ls i jl) 50 - - G = 18 dB - 25 - G = 12 dB - 30 - G = 6 dB ISOUTDWN RF in to RF out isolation in shut down mode CMRR Common mode rejection at the output VESD ESD robustness on all pins -20.log(ls i1l) HBM dB dB - 35 - - 50 - dB - 20 - dB 3 - - kV Table 5. Electrical Specifications. V1.11_STD – August 26th, 2008 6/13 www.semtech.com SX1701B 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 SX1701B 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 SX1701B reference design at www.semtech.com. + 5.0 V 2 1 10nF X7R 0603 1nF X7R 0603 470pF 17 C0G 0603 75 Ω RF INPUT 0.3pF C0G 0603 3 470pF C0G 0603 SX1701B 470pF C0G 0603 G2(1:0) VDD2 OUTP2 GND OUTM2 14 NC 11 NC 10 IN 3.9nH wirewound 0603 DEC 470pF C0G 0603 470pF C0G 0603 G1(1:0) 4 100 Ω RF BALANCED OUTPUT 2 15 VDD1 OUTP1 100 Ω RF BALANCED OUTPUT 1 7 G2(1) G2(0) 5 8 NC NC G1(1) G1(0) 470pF C0G 0603 OUTM1 6 470pF C0G 0603 9 12 13 16 6X 3K3 0603 Gain control Figure 4. Application board schematic. V1.11_STD – August 26th, 2008 9/13 www.semtech.com SX1701B ADVANCED COMMUNICATION & SENSING PRODUCTS 5 Datasheet APPLICATION EXAMPLE Although intended for differential output operation, the SX1701B may be used for the single-ended output configuration as shown in Figure 5. Note that some degradation in device performance may be experienced, including a 3 dB reduction in gain. 5.1 SINGLE-ENDED INPUT TO 1 DIFFERENTIAL OUTPUTS WITH LOOP-THROUGH SINGLE-ENDED OUTPUT + 5.0 V 2 1 10nF X7R 0603 1nF X7R 0603 470pF 17 C0G 0603 75 Ω RF INPUT 0.3pF C0G 0603 3 470pF C0G 0603 SX1701B G2(1:0) VDD2 OUTP2 VDD1 470pF C0G 15 0603 14 OUTM2 GND IN 3.9nH wirewound 0603 470pF C0G 0603 NC 11 NC 10 G1(1:0) 4 DEC OUTP1 100 Ω RF BALANCED OUTPUT To BCM tuner 7 470pF C0G 0603 6 3K3 0603 G2(1) G2(0) 5 8 NC NC G1(1) G1(0) 470pF C0G 0603 75 Ω RF SINGLE ENDED OUTPUT loop OUTM1 100R 0603 15R0 0603 51R0 0603 9 12 13 16 3K3 3K3 0603 0603 470pF C0G 0603 3K3 0603 Gain control Figure 5. Differential output with loop-through. V1.11_STD – August 26th, 2008 10/13 www.semtech.com SX1701B ADVANCED COMMUNICATION & SENSING PRODUCTS 6 Datasheet PACKAGE OUTLINE DRAWING SX1701B is assembled in a MLPQ-16, 4 mm x 4 mm as shown in Figure 6. Figure 6. Package outline drawing. 7 MARKING INFORMATION 1701B yyww xxxxx xxxxx Notes: 1. 1701B = Product code (SX1701B) 2. yyww = Datecode (Example 0824) 3. xxxxx = Lot number Figure 7. Marking information. V1.11_STD – August 26th, 2008 11/13 www.semtech.com SX1701B 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 SX1701B 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