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| MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MRFIC1804/D The MRFIC Line 1.8 GHz LNA/Downmixer Designed primarily for use in DECT, Japan Personal Handy Phone (JPHP), and other wireless Personal Communication Systems (PCS) applications. The MRFIC1804 includes a low noise amplifier and downmixer in a low-cost SOIC-16 package. The integrated circuit requires minimal off-chip matching while allowing for the maximum in flexibility and efficiency. The mixer is optimized for low side injection and offers reasonable intercept point as well as high efficiency and 4 dB of conversion gain. Image filtering is implemented off-chip to allow maximum flexibility. With both TX and RX enable pins low, the device is in standby mode and draws less than 0.5 mA. Together with the rest of the MRFIC180X series, this GaAs IC family offers the complete transmit and receive functions, less LO and filters, needed for a typical 1.8 GHz cordless telephone. * Usable Frequency Range = 1.5 to 2.2 GHz * 14 dB Gain, 2.3 dB Noise Figure LNA * 4 dB Gain, 13 dB Noise Figure Mixer * 0.9 dB Mixer Input Intercept Point * Simple LO/IF Off-Chip Matching for Maximum Flexibility * Low Power Consumption = 24 mW (Typ) * Single Bias Supply = 2.7 to 3.3 V * Low LO Power Requirement = - 5 dBm (Typ) * Low Cost Surface Mount Plastic Package * Available in Tape and Reel by Adding R2 Suffix to Part Number. R2 Suffix = 2,500 Units per 16 mm, 13 inch Reel. * Device Marking = M1804 MRFIC1804 1.8 GHz LOW NOISE AMPLIFIER AND DOWNMIXER GaAs MONOLITHIC INTEGRATED CIRCUIT CASE 751B-05 (SO-16) VDD GND RF IN GND GND LNA OUT GND RX EN 1 2 3 4 5 6 7 LNA 8 MIXER 16 IF OUT/VDD 15 GND 14 LO IN 13 GND 12 GND 11 LNA IN 10 GND 9 VDD Pin Connections and Functional Block Diagram REV 2 (c)MOTOROLA RF DEVICE DATA Motorola, Inc. 1995 MRFIC1804 1 MAXIMUM RATINGS (TA = 25C unless otherwise noted) Rating Supply Voltage LNA Input Power (Standby Mode) LO Input Power Receive Enable Voltage Storage Temperature Range Operating Ambient Temperature Symbol VDD LNAin PLO RX EN Tstg TA Limit 5 10 0 5 - 65 to +150 - 30 to + 85 Unit Vdc dBm dBm Vdc C C RECOMMENDED OPERATING RANGES Parameter RF Input Frequency Mixer LO Frequency IF Output Frequency Supply Voltage Receive Enable Voltage Symbol fRF fLO fIF VDD RX EN Value 1.8 to 1.925 1.5 to 1.9 70 to 325 2.7 to 3.3 2.7 to 3.3 Unit GHz GHz MHz Vdc Vdc ELECTRICAL CHARACTERISTICS (VDD = 3 V, TA = 25C, LO = 1790 MHz @ - 5 dBm, RF = 1.9 GHz , RX EN = 3 V) Characteristic LNA Gain LNA Noise Figure LNA Input 3rd Order Intercept Mixer Conversion Gain (into 50 ) Mixer Noise Figure Mixer Input 3rd Order Intercept Downconverter Gain (Less Image Filter Loss) Supply Current, RX Mode (RX EN = 3 V, LOoff) Standby Mode Current (RX EN = 0 V, LO off) Min -- -- -- -- -- -- 16 -- -- Typ 14 2.3 -11 4 13 0.9 -- 7 -- Max -- -- -- -- -- -- -- 10 0.5 Unit dB dB dBm dB dB dBm dB mA mA IF OUT C1 C2 16 15 LO IN LNA IN L2 L3 14 13 12 11 10 9 VDD C3 VDD C5 L1 1 C4 VDD 2 3 4 5 L4 6 7 8 C1 C2 C3, C4 C5 L1 L2 L3, L4 12 pF (110 MHz) or 7.5 pF (240 MHz) 0.8 pF 100 pF 1000 pF 82 nH (110 MHz) or 15 nH (240 MHz) 8.2 nH 3.0 nH (Microstrip) MIXER IN LNA OUT RX EN Figure 1. Applications Circuit Configuration (for 110 MHz and 240 MHz IF) MRFIC1804 2 MOTOROLA RF DEVICE DATA S11 Freq (GHz) 1.5 1.6 1.7 1.8 1.82 1.84 1.86 1.88 1.9 1.92 2.0 2.1 2.2 2.3 2.4 2.5 S21 Angle -64.71 -70.03 -73.54 -72.72 -71.10 -71.20 -69.93 -68.86 -67.50 -66.18 -57.10 -47.69 -35.10 -15.07 -12.53 -34.07 S12 Angle -63.77 -80.96 -98.00 -113.87 -117.42 -120.25 -123.27 -126.51 -129.49 -132.33 -143.54 -155.69 -167.78 175.72 -155.83 -178.63 S22 Angle 139.08 128.21 123.07 113.17 111.66 109.36 107.72 106.52 104.49 103.55 97.41 92.26 86.81 83.78 45.03 58.37 Mag 0.801 0.741 0.641 0.559 0.533 0.512 0.494 0.478 0.467 0.452 0.383 0.326 0.271 0.205 0.708 0.462 Mag 5.65 6.07 6.63 6.70 6.58 6.32 5.92 5.79 5.88 5.98 5.57 5.06 4.61 4.12 1.84 3.18 Mag 0.025 0.033 0.038 0.047 0.046 0.046 0.049 0.052 0.054 0.055 0.055 0.058 0.063 0.072 0.073 0.055 Mag 0.685 0.622 0.622 0.560 0.543 0.530 0.513 0.498 0.486 0.476 0.412 0.344 0.276 0.192 0.406 0.292 Angle -62.55 -74.44 -83.36 -92.40 -93.20 -94.40 -95.19 -95.56 -96.35 -97.14 -96.10 -90.55 -83.89 -63.78 -48.22 -66.60 Table 1. LNA S-Parameters 1.0 nH IF OUT 500 W 15 pF Figure 2. Equivalent IF Output Circuit MOTOROLA RF DEVICE DATA MRFIC1804 3 TYPICAL CHARACTERISTICS (VDD = 3 V) 18.5 18 G C , CONVERSION GAIN (dB) 17.5 17 fRF = 1900 MHz fLO = 1790 MHz Conversion Gain -2 -3 -4 -5 1 dB -6 -15 5 25 45 65 -7 85 12 1.7 1.75 1.8 1.85 1.9 1.95 2 0 -1 1 dB COMPRESSION (dB) G, GAIN (dB) 15 2.15 2.14 2.13 2.12 2.11 f, FREQUENCY (GHz) 16 Gain 2.17 2.16 14 NF 16.5 16 13 15.5 15 - 35 T, TEMPERATURE (C) Figure 3. Downconverter Conversion Gain (less Image Filter) and 1 dB Compression versus Temperature 6 0 6 1 dB COMPRESSION POINT (dBm) G C , CONVERSION GAIN (dB) 5 4 3 Figure 4. LNA Gain and Noise Figure versus Frequency G C , CONVERSION GAIN (dB) Conversion Gain 4 -2 1 dB 2 -4 fIF = 110 MHz fRF = 1900 MHz fLO = 1790 MHz - 35 -10 25 T, TEMPERATURE (C) 55 85 -6 2 1 fIF = 110 MHz fRF = 1900 MHz fLO = 1790 MHz PRF = -10 dBm - 7.5 -5 PLO, LO POWER (dBm) - 2.5 0 0 0 -10 Figure 5. Mixer Conversion Gain and 1 dB Compression versus Temperature Figure 6. Mixer RF to IF Conversion Gain versus LO Power 6 G C , CONVERSION GAIN (dB) 5 4 3 2 1 0 1.7 fRF = fLO - IF PRF = -10 dBm 1.75 1.8 1.85 1.9 1.95 2 240 MHz fIF = 110 MHz -15 -17 -19 - 21 - 23 - 25 - 27 1.7 fIF = 110 MHz fRF = 1900 MHz PLO = - 5 dBm LO FEED THROUGH (dBm) 1.75 1.8 1.85 1.9 1.95 2 fRF, RF FREQUENCY (GHz) f, FREQUENCY (GHz) Figure 7. Mixer RF to IF Conversion Gain versus RF Frequency Figure 8. Mixer LO to IF Feed Through versus RF Frequency MRFIC1804 4 MOTOROLA RF DEVICE DATA NF, NOISE FIGURE (dB) DESIGN AND APPLICATIONS INFORMATION The MRFIC1804 consists of a two-stage GaAs MESFET low noise amplifier and a single ended MESFET mixer. The LNA design conserves bias current through stacking of the two FETs, thus reusing the current. The mixer consists of a common gate stage driving a common source stage with the IF output being the drain of the common source stage shunted with 15 pF. The LNA output and mixer input have been separated to allow the addition of an external image filter. Such a filter, usually ceramic, is useful in improving the mixer noise figure and third order intercept performance. It also provides LO rejection to reduce the amount of LO power which may leak to the antenna. Alternatively, image trapping can be implemented at the LNA input or output with discrete or distributed components. The design has been optimized for application in the PCS bands around 1.9 GHz but is usable from around 1.5 GHz to 2.2 GHz. For applications at 1.9 GHz and IFs of 110 MHz or 240 MHz, the circuit shown in Figure 1 can be used. This circuit was used to derive the characterization data shown in Figures 3 through 8. For other IF frequencies in the 100 MHz to 350 MHz range, use the IF equivalent circuit shown in Figure 2 for matching network design. As can be seen in the characterization curves, performance appears to degrade above about 1.85 GHz. This is partially a function of the circuit shown in Figure 1 and can be improved, first, by adjusting the LO input match, second, by matching LNA input and and the mixer input off chip. As with all RF circuits, layout is important. Ground vias must be close to the component or lead to be grounded and vias must be plentiful. RF signal lines should be controlled impedance such as microstrip. Bypassing of power supply leads as shown in Figure 1 is essential to avoid oscillation of the circuits. EVALUATION BOARDS Evaluation boards are available for RF Monolithic Integrated Circuits by adding a "TF" suffix to the device type. For a complete list of currently available boards and ones in development for newly introduced poduct, please contact your local Motorola Distributor or Sales Office. MOTOROLA RF DEVICE DATA MRFIC1804 5 PACKAGE DIMENSIONS -A- 16 9 -B- 1 8 P 8 PL 0.25 (0.010) M B S NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. G F DIM A B C D F G J K M P R MILLIMETERS MIN MAX 9.80 10.00 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.19 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50 INCHES MIN MAX 0.386 0.393 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.008 0.009 0.004 0.009 0_ 7_ 0.229 0.244 0.010 0.019 K C -T- SEATING PLANE R X 45 _ M D 16 PL M J 0.25 (0.010) TB S A S CASE 751B-05 ISSUE J Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola 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 can and do vary in different applications. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. How to reach us: USA / EUROPE: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. 1-800-441-2447 MFAX: RMFAX0@email.sps.mot.com - TOUCHTONE (602) 244-6609 INTERNET: http://Design-NET.com JAPAN: Nippon Motorola Ltd.; Tatsumi-SPD-JLDC, Toshikatsu Otsuki, 6F Seibu-Butsuryu-Center, 3-14-2 Tatsumi Koto-Ku, Tokyo 135, Japan. 03-3521-8315 HONG KONG: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852-26629298 MRFIC1804 6 *MRFIC1804/D* MRFIC1804/D MOTOROLA RF DEVICE DATA |
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