SRF-1016

SRF-1016(Z) 65MHz to 300MHz Silicon Germanium IF Receiver SRF-1016(Z) Preliminary 65MHz to 300MHz SILICON GERMANIUM IF RECEIVER RFMD Green, RoHS Compliant, Pb-Free (Z Part Number) Package: TSSOP, 16-Pin, 5.0mmx6.4mmx1.0mm NOT FOR NEW DESIGNS Product Description Features RFMD’s SRF-1016 is a quadrature demodulator RFIC designed for UHF and microwave receiver IF applications. This device features switchable gain control, high P1dB, and excellent I/Q amplitude and phase balance. Use of this highly integrated device can result in lower component count, a more compact assembly, and higher transceiver card yields. The device is packaged in an industry standard 16-pin TSSOP with exposed paddle for superb RF and thermal ground.   Functional Block Diagram 1 16 BBQP GaAs MESFET BBIP 2 15 BBQN VCC 3 14 VCC Si BiCMOS GC2 4 13 LOP SiGe HBT GC1 5 12 LON VEE 6 11 VEE VCC 7 10 VCC INP 8 9 INN  S BBIN  InGaP HBT SiGe BiCMOS 0/90  GaAs pHEMT Si CMOS Si BJT GaN HEMT Parameter IF Input Min. NO T Specification Typ. 65 28 -26 FO R IF Frequency Range INP/INN Return Loss INP/INN Common Mode Voltage Gain Input P1dB DSB Noise Figure Gain Input P1dB DSB Noise Figure Gain Input P1dB DSB Noise Figure NE W RF MEMS 9 -8 -9.0 12 Digital and Spread Spectrum Communication Systems Cellular, PCS, DCS, 2G, 2.5G, 3G Transceivers ISM Band Transceivers Point-to-Point Microwave Receivers Broadband Wireless Systems DE SI GN GaAs HBT Gain Control in 20dB Steps Excellent I/Q Amplitude and Phase Balance Output P1dB>+4dBm Over All Gain Settings Applications  Optimum Technology Matching® Applied   20 2 31 -24 11 12 -6 14.5 -6.5 14 31 Max. 300 33 14 -4.0  Unit MHz dB V dB dBm dB dB dBm dB dB dBm dB Condition 50 nominal differential input, Note 1 Internally generated High gain setting GC1=GC2=+5V Medium gain setting GC1=+5V GC2=+0V Low gain setting GC1=GC2=0V RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trademark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc. DS101122 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 1 of 8 SRF-1016(Z) Preliminary Absolute Maximum Ratings Parameter Rating Unit Supply Voltage 6.0 VDC LO Input +10 dBm IF Input Caution! ESD sensitive device. Exceeding any one or a combination of the Absolute Maximum Rating conditions may cause permanent damage to the device. Extended application of Absolute Maximum Rating conditions to the device may reduce device reliability. Specified typical performance or functional operation of the device under Absolute Maximum Rating conditions is not implied. +10 dBm Operating Temperature -40 to +85 °C RoHS status based on EUDirective2002/95/EC (at time of this document revision). Storage Temperature -65 to +150 °C The information in this publication is believed to be accurate and reliable. However, no responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any infringement of patents, or other rights of third parties, resulting from its use. No license is granted by implication or otherwise under any patent or patent rights of RFMD. RFMD reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice. Operation of this device beyond any one of these limits may cause permanent damage. For reliable continuous operation, the device voltage and current must not exceed the maximum operating values specified in the table on page one. Product Specifications - I/Q Output Min Max Unit DC Typ 500 MHz I/Q Output Amplitude Balance -0.2 0.2 dB I/Q output Phase Balance -2 2 deg 2.5 V I/Q Output Return Loss 20 dB DE SI GN I/Q Output Common-mode Voltage Additonal Test Conditions S Parameters I/Q Output Frequency Range 50 nominal differential output* * To achieve 20dB port match above 100MHz, the parasitic inductance of the package must be matched out. Product Specifications - LO Input Parameters Min LO Frequency Range 65 LO Input Level -3 LO Return Loss Typ 0 Max Unit 300 MHz +3 dBm 20 dB Additonal Test Conditions 50 nominal differential input * To achieve 20dB of port match the parasitic inducatnce of the package, board, and L4, L5 must be matched at the center frequency with a series capacitor. Parameters Supply Voltage (VCC) Supply Current (ICC) Thermal Resistance GC1, GC2 Input VIL FO R GC1, GC2 Input VIH NE W Product Specifications - Miscellaneous GC1, GC2 Input Impedance Min Typ Max Unit +4.75 +5.0 +5.25 V 195 35 Additonal Test Conditions mA 45 °C/W Hot spot on die to lead 0 0.3xVCC V Logic level zero 0.7xVCC VCC V Logic level one 40 kohm Test Conditions GC1 Voltage GC2 Voltage Low Gain 0V 0V 0dBm Medium Gain +5V 0V -20dBm +5V +5V -40dBm NO T Gain State High Gain IF Power VCC =+5VDC, T=+25°C, LO input=0dBm, 200MHz, IF input=201MHz 2 of 8 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS101122 SRF-1016(Z) Preliminary The SRF-1016 is a variable gain I-Q demodulator designed for use in receiver IF sections, as shown in the figure below. It consists of five subcircuits: two cascaded switched gain stages, a matched pair of mixers, and a LO quadrature generator. This part is also available in a higher frequency version, the SRF-2016. The gain stages are broadband differential amplifiers each with a digital control pin to set the gain. The gain control pins act independently of each other. Since the amplifiers have approximately the same gain, setting GC1 high and GC2 low results in approximately the same gain as setting GC1 low and GC2 high. The former setting is preferred because it offers better noise figure. The IF input is differential with internal bias circuitry to set the common mode voltage. The use of blocking capacitors to facilitate AC coupling is highly recommended to avoid changing the common mode voltage. Either input may be driven singleended if the other input is connected to ground through an AC short such as a 1000pF capacitor. This typically results in slightly lower input P1dB. The two matched mixers are configured with the quadrature LO generator to provide in-phase and quadrature baseband outputs. These can be fed through ADCs to a DSP engine, or can be fed into a low frequency 90° hybrid for image rejection. Alternatively, the IF signal can be extracted from the BBI port by injecting DC into the LO port. RF Filter IF Filter SRF 1016 BB Filter I ADC BB Filter Q ADC NE W LNA DE SI GN S The LO and IF ports offer a differential 50 impedance. The package (and in the case of the input port, the parallel L-R network) adds inductance that tends to degrade return loss. This can easily be matched out with a series capacitor. The 27pF capacitor on the evaluation board is appropriate for 200MHz operation; larger capacitors should be used for lower frequencies. Typical use for the SRF-1016 in a receiver employing digital I/Q demodulation. The SRF-1016 has high gain at UHF frequencies, so instability can result if there is poor power supply decoupling or undesired coupling from the input to the output. The following considerations should be observed when laying out a PC board: FO R Follow the general layout of the evaluation board, keeping the power supply decoupling capacitors as close to the package as possible. The back of the package, the two ground pins and the decoupling capacitors should connect directly to ground, preferably to a large dedicated ground plane. Use the parallel L-R circuits on the input pins. Ensure that the input signal tracks are routed far from the output tracks. The VCC pins are not internally connected, so all must be connected together externally with the specified decoupling capacitors. NO T The figures on page 4 illustrate a typical SRF-1016’s performance with respect to temperature. Note that these numbers include the effect of the R-L network in the IF port. The frequency response of the IF and LO ports is dominated by the L-R network on the input. When de-embedded, the gain and P1dB response is within 0.5dB from 65MHz to 300MHz. The SRF-1016 features immunity from changes in LO power. The gain typically changes by less than 0.6dB over a 6dB range of LO power. Also note the excellent I/Q balance, which typically falls within 0.1dB and 1° from 65MHz to 300MHz, and varies less than 0.05dB and 0.5° over temperature (-40 to +85C). DS101122 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 3 of 8 SRF-1016(Z) Preliminary The package dimensions are shown on page 5. Note that heat is removed from the part via the heat slug, so this slug must be properly soldered to a copper plane under the part. Evaluation boards are available for this device and a description of the board are shownon page 6. Note that the evaluation board uses baluns on the I/Q outputs, and these baluns limit the low frequency response of the device. For true baseband operation, the baluns should be removed, and the differential signals used directly. Gain vs. Temperature Output P1dB vs. Temperature 10 35 30 9 Low Gain 15 Med Gain 10 High Gain 5 0 8 Low Gain Med Gain High Gain 7 6 -5 -10 5 -20 0 20 40 60 80 Temperature, C -40 -20 0 DE SI GN -40 S Gain, dB 20 Output P1dB, dBm 25 20 40 60 80 Temperature, C Output P1dB vs. LO Power Noise Figure vs. Temperature 10 35 30 Low Gain Med Gain 15 High Gain 10 5 0 -40 -20 0 20 NE W Noise Figure, dB 20 40 60 Output P1dB, dBm 9 25 8 5 -4 80 -3 -2 -1 4 91 90.5 90 89.5 -0.3 -0.4 200 3 91.5 -0.2 100 2 92 -0.1 0 1 Phase Difference vs. LO Frequency Phase Difference, degrees 0 0 LO Power, dBm FO R 0.1 NO T Amplitude Difference, dB 0.2 High Gain 6 Amplitude Difference vs. LO Frequency 0.3 Med Gain 7 Temperature, C 0.4 Low Gain 89 300 400 500 LO Frequency, MHz 600 700 800 0 100 200 300 400 500 600 700 800 LO Frequency, MHz Unless otherwise stated, measurements were taken with an IF frequency of 200MHz, an LO frequency of 201MHz, a baseband output of 1MHz, an LO power of 0dBm, at room temperature, with a supply voltage of 5volts. Measurements were done on the evaluation board. 4 of 8 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS101122 SRF-1016(Z) Preliminary Function BBIN BBIP VCC GC2 GC1 VEE INP INN LON LOP BBQN BBQP Description Baseband i-axis output (--). Self-biasing. Baseband l-axis output (+). Self-biasing. Positive power supply. Gain control input, stage 2. 5V CMOS levels. Gain control input, stage 1. 5V CMOS levels. Ground. IF input (+). Self-biasing; AC-couple. IF input (-). Self-biasing; AC-couple. LO input (-). Self-biasing; AC-couple. LO input (+). Self-biaising; AC-couple. Baseband Q-axis output (-). Self-biasing. Baseband Q-axis output (+). Self-biasing. S Pin 1 2 3, 7, 10, 14 4 5 6, 11 8 9 12 13 15 16 0.049 (1.25) 0.012 (0.30) DE SI GN Suggested PCB Pad Layout 0.118 (3.0) 0.024 (0.63) 0.014 (0.35) 0.118 (3.0) NE W 0.010 (0.25) via - Indicates metalization 0.028 (0.7) 0.035 (0.9) 0.272 (6.9) all units are in inches (mm) - vias connect pad to underlying ground plane Package Drawing FO R Dimensions in inches (millimeters) Refer to drawing posted at www.rfmd.com for tolerances. NO T Dimensions in inches (mm) DS101122 XXX XXXX LOT ID 0.193 (4.9) 0.207 (5.25) 0.004 (0.1) 0.008 (0.2) 0.018 (0.45) 0.030 (0.75) EXPOSED THERMAL PAD ZONE 0.118 (3.0) SQ. 0.252 (6.4) Part # 0.169 (4.3) 0.177 (4.5) Lot # NOTES: 1. PACKAGE BODY SIZES EXCLUDE MOLD FLASH 0.031 (0.8) PROTRUSIONS OR GATE BURRS. 0.041 (1.05) 2. TOLERANCE ±0.1MM UNLESS OTHERWISE SPECIFIED. 3. COPLANARITY: 0.1MM 0.0 4. CONTROLLING DIMENSION IS MILLIMETER, 0.006 (0.15) CONVERTED INCH DIMENSIONS ARE NOT NECESSARILY EXACT. 5. FOLLOWED FROM JEDEC MO-153. 0° 8° 0.026 (.65) 0.007 (0.19) 0.012 (0.30) 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 5 of 8 SRF-1016(Z) Preliminary DE SI GN S Fully Assembled PCB NO T FO R NE W Demo Test Board Schematic Tuned for Operation at 200MHz 6 of 8 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. DS101122 SRF-1016(Z) Preliminary Bill of Materials Component Designator Value Qty Vendor Part Number Description U1 1 SMDI SRF-1016 IF receiver J1, J6, J7 3 Sullins S1312-02-ND 2 pin 0.1” header J2, J3, J4, J5 4 Johnson Components 142-0701-851 SMA end launch connector T1, T2 2 Mini-Circuits TC1-1 IF Transformer T3, T4 2 Mini-Circuits ADT1-6T Baseband Transformer C1 1 uF 1 Venkel C1206Y5V160-105ZNE 1206 size supply bypass capacitor C2, C3 27 pF 2 Venkel C0603COG500-270JNE 0603 size coupling capacitor C4, C5 68 pF 2 Venkel C0603COG500-680JNE 0603 size coupling capacitor C9 100 pF 1 Venkel C0603COG500-101JNE 0603 size bypass capacitor C6, C7, C8 22 pF 3 Venkel C0603COG500-220JNE 0603 size bypass capacitor C10, C11, C12, C13 220 pF 4 Venkel C0603COG500-221JNE 0603 size filter capacitor L1, L2, L3 1 uH 5 Panasonic PCD1008TR-ND 1210 size filter inductor R1, R2 1 kOhm 2 Venkel CR0603-16W-102JT 0603 size pull-up resistor 0 Ohm 2 Venkel CR0603-16W-000T 0603 jumper R5, R6 50 Ohm 2 Venkel CR0603-16W-500JT 0603 size stability resistor L4, L5 10 nH 2 Toko LL1608 FS10NJ 0603 size stability inductor 1 SMDI ECB-102274 Evaluation Board DE SI GN S R3, R4 Ordering Information Part Number SRF-1016 Devices/Reel 7” 1000 7” 1000 NO T FO R NE W SRF-1016Z Reel Size DS101122 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 7 of 8 SRF-1016(Z) NO T FO R NE W DE SI GN S Preliminary 8 of 8 7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com. 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