NJM2288 300/400MHz BAND DOWN MIXER WITH AMPLIFIER GENERAL DESCRIPTION PACKAGE OUTLINE The NJM2288 is a low-current, low-voltage down mixer, which operates from 2V supply. It is very suitable for situations where small size, low cost, low parts count is important. NJM2288F1 FEATURES Wide Operating Voltage Low Operating Current Conversion Gain Input Frequency Excellent Thermal Stability Conversion Gain Third - Order Intercept Point Local Input Resistance Bipolar Technology Package Outline 2V to 5.5V 2.8mA type. @ V+=2.2V, 429MHz input 9dB @V+ =2.2V, 429MHz input 300MHz to Up to 500MHz (recommended range) 2dB @ V+=2.2V, 429MHz input, -- 40 to + 85°C (reference range) --12dBm @V+ =2.2V, 429MHz input 9.1kΩ SOT23-6 (MTP6), 2.8mm x 2.9mm PIN CONFIGULATION Orientation Mark 1 6 2 5 3 4 Pin Function 1. RF IN 2. GND 3. LO IN 4. CAP 5. V+ 6. IF OUT Top View Simplified Block Diagram RF IN IF OUT 1 6 GND V 2 Ver.2009-12-22 Bias Regulator + 5 LO IN CAP 3 4 -1- NJM2288 ABSOLUTE MAXIMUM RATINGS PARAMETER (Ta=25°C) SYMBOL RATINGS UNIT Supply Voltage V+ 7 V Power Dissipation PD 200 mW RF Input Level Pr f max 6 dBm LO Input Level Pl o max 6 dBm Operating Temperature Topr - 40 to + 85 °C Storage Temperature Tstg - 40 to +125 °C RECOMMENDED OPERATING CONDITIONS PARAMETER Supply Voltage SYMBOL TEST CONDITIONS V+ (Ta=25°C) MIN. TYP. MAX. UNIT 2 2.2 5.5 V ELECTRICAL CHARACTERISTICS Ta=25°C, V+ =2.2V, frf = 429MHz, Prf = --35dBm, flo = 407.7MHz, Plo = --15dBm, fif = 21.3MHz, unless otherwise noted) PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT Operating Current Iccq No signal Test circuit 1 - 2.8 3.5 mA Conversion Gain CG Test circuit 1 - 9 - dB Mixer Intercept Point IIP3 Test circuit 1 - - 12 - dBm Noise Figure NF Test Circuit 2 - 9 - dB |S11l2 Test Circuit 3 - - 0.8 - dB Impedance between LO IN and CAP Terminal Zlo Test Circuit 4 DC value - 9.1 LO Leakage at RF IN (1) Plo–rf1 Test Circuit 3 - - 40 - dB LO Leakage at RF IN (2) Plo–rf2 Test Circui3 flo=800MHz, Plo= -15dBm - - 25 - dB LO Leakage at IF OUT Plo–if Test Circuit1 - - 40 - dB MIN. TYP. MAX. UNIT -2 0 2 dB RF Input Return Loss kΩ TEMPERATURE DRIFT (Reference) PARAMETER Conversion Gain Ver.2009-12-22 SYMBOL -- TEST CONDITIONS Ta= -- 40 to + 85°C -2- NJM2288 TEST CIRCUIT These test circuits allow the measurement of all parameters described in “ELECTRICAL CHARACTERISTICS”. Test Circuit 1 for Iccq, CG, IIP3andP lo-if 1000p 56n SG Zout=50 RF IN IF OUT 1 6 GND V+ 2 50 1000p Bias Regulator 0.01u 15u CAP 3 4 820 V+ 5 LO IN 820 1000p 0.01u Spectrum Analyzer Zin=50 1000p SG Zout=50 CG is calculated from CG=Pif – Prf Where Psa =the value of spectrum analyzer in dBm Pif= Psa+10 log 820/50 (dBm) Prf=input level in dBm Test Circuit 2 for NF 56n 1000p Noise Source NF Meter 820 RF IN IF OUT 1 6 GND V+ 2 50 1000p SG Bias Regulator 0.01u 15u V+ 5 LO IN CAP 3 4 820 1000p 0.01u 1000p Zout=50 Ver.2009-12-22 -3- NJM2288 Test Circuit 3 for lS11l2,Plo-rf1andPlo-rf2 1000p Network Analyzer RF IN IF OUT 1 6 GND V+ 2 Bias 1000p Regulator 0.01u 15u 820 820 V+ 5 1000p LO IN CAP 3 4 0.01u Spectrum Analyzer Zin=50 1000p Test Circuit 4 for Zlo RF IN IF OUT 1 6 GND V+ 2 Bias Regulator 5 LO IN CAP 3 4 VI SOURCE Test Circuit 5 for VCG (voltage conversion gain) 1000p SG Zout=50 IF OUT 1 6 GND V+ 2 50 1000p SG RF IN Bias Regulator 0.01u 15u CAP 3 4 820 V+ 5 LO IN 820 1000p 0.01u Spectrum Analyzer Zin=50 1000p Zout=50 Ver.2009-12-22 -4- NJM2288 EVALUATION PC BOARD The evaluation board is useful for your design and to have more understanding of the usage and performance of this device. This circuit is the same as TEST CIRCUIT. Note that this board is not prepared to show the recommendation of pattern and parts layout. Circuit Diagram RF IN L1 C1 C2 56n 5p 1000p RF IN IF OUT 1 6 GND V+ 2 Bias R1 50 C3 LO IN Regulator L2 R2 15u 820 C4 C5 1000p 0.01u 0.01u V+ 5 LO IN CAP 3 4 1000p C6 R3 820 IF OUT C7 1000p Evaluation PC Board L2 L1 R3 IF OUT V+ C4 C5 C7 C2 IC1 NJM 2288 R2 C6 C1 RF IN C3 GND R1 LO IN External Components Number IC1 Value NJM2288 Supplier New Japan Radio R1 R2 R3 50Ω 820Ω 820Ω KOA (RK73B series) KOA (RK73B series) KOA (RK73B series) L1 L2 56nH 15uH Taiyo Yuden (HK1608) Taiyo Yuden (LAP02) Ver.2009-12-22 Number C1 C2 C3 C4 C5 C6 C7 Value 1000pF 5pF 1000pF 1000pH 0.01uF 0.01uF 1000pF Supplier Murata (GRM21 series) Murata (GRM21 series) Murata (GRM21 series) Murata (GRM21 series) Murata (GRM21 series) Murata (GRM21 series) Murata (GRM21 series) -5- NJM2288 TERMINAL FUNCTION (Ta=25°C, V+=2.2 V) Pin No. SYMBOL EQUIVARENT CIRCUIT VOLTAGE V+ 1 6 RF IN 1.18V 1 6 IF OUT 2 GND 3 -- -- LO IN 4 CAP 5 V+ 2.03V Ver.2009-12-22 4 2.03V -- RF Input Recommended input frequency range is from 300 to 500MHz. For using at another frequency, please refer to the data shown in ”TYPICAL CHARACTERISTICS”. IF Output Output frequency fif is calculated from fif = frf- flo. where frf=RF IN input signal frequency flo=LO IN input signal frequency Ground -- V+ 3 FUNCTION -- Local Input Input level of over –20dBm is recommended to obtain high IF output level, where IF output is saturated. Note that absolute maximum input level is 6dBm. Local Signal Reverse Input An external decoupling capacitor is placed between this pin and ground. The value of capacitance should be selected to be very low impedance at LO IN input signal frequency. Supply Voltage ESD protection transistor exists between V+ and ground. -6- NJM2288 TYPICAL CHARACTERISTICS (Ta=25°C, V+ =2.2V, frf = 429MHz, Prf = --35dBm, flo = 407.7MHz, Plo = --15dBm, fif = 21.3MHz, unless otherwise noted) Operating Current Iccq versus Ambient Temperature Ta Operating Current Iccq versus Supply Voltage V+ Circuit 1, no signal 4.0 4.0 3.5 3.5 85°C 25°C 2.5 -40°C 2.0 1.5 2.0 1.5 1.0 0.5 0.5 0.0 0.0 2 3 4 V+ [V] 5 6 -50 7 Circuit 1, no signal 15.0 13.5 13.5 12.0 12.0 10.5 CG [dB] -40°C, 25°C 9.0 85°C 7.5 -25 0 25 50 Ta [°C] 75 100 125 Conversion Gain CG versus Ambient Temperature Ta Conversion Gain CG versus Supply Voltage V+ 15.0 2.2V, 2V 2.5 1.0 1 5.5V 3.0 Iccq [mA] Iccq [mA] 3.0 CG [dB] Circuit 1, no signal 10.5 5.5V 9.0 7.5 6.0 6.0 4.5 4.5 3.0 Circuit 1, no signal 2.2V, 2V 3.0 1 2 3 4 V+ [V] Ver.2009-12-22 5 6 7 -50 -25 0 25 50 Ta [°C] 75 100 125 -7- NJM2288 IF Output Level Pif versus Ambient Temperature Ta IF Output Level Pif versus RF Input Level Prf 0 Circuit 1 0 Pif -10 -20 -20 -30 -30 Prf=0dBm, -10dBm, -20dBm -30dBm Pif [dBm] Pif [dBm] -10 Circuit 1 -40 -50 Pif(RF leak)= RF signal leakage level at IF OUT -60 -70 -40dBm -40 -50dBm -50 -60 -70 -80 -80 -50 -40 -30 -20 -10 -50 0 -25 0 75 100 125 IF Output Level Pif versus Ambient Temperature Ta IF Output Level Pif versus LO IN Input level Plo Circuit 1 0 Circuit 1 -10 -10 Pif -20 -20 -30 Pif [dBm] Pif [dBm] 50 Ta [°C] Prf [dBm] 0 25 -40 -50 Pif(LO leak)= -60 LO signal leakage level at IF OUT -70 Plo=0dBm, -10dBm -30 -20dBm -40 -30dBm -50 -40dBm -60 -50dBm -70 -80 -80 -50 Ver.2009-12-22 -40 -30 -20 Plo [dBm] -10 0 -50 -25 0 25 50 Ta [°C] 75 100 125 -8- NJM2288 IP3 versus Ambient Temperature Ta Intermodulation versus RF Input Level Prf Circuit 1, frf1=429MHz, frf2=429.0125MHz, 0 fif=21.3MHz -6 -10 -8 Pif -20 -10 -30 IIP3 [dBm] Pif [dBm] Circuit 1, frf1=429MHz, frf2=429.0125MHz, fif=21.3MHz IM3 -40 -50 -12 -14 -60 -16 -70 -18 -80 -50 -40 -30 -20 Prf [dBm] -10 -50 0 Noise Figure NF versus Supply Voltage V+ 15.0 0 25 50 Ta [°C] 75 100 125 100 125 Noise Figure NF versus Ambient Temperature Ta Circuit 2 15.0 12.5 Circuit 2 12.5 10.0 85°C 25°C 7.5 -40°C 10.0 NF [dB] NF [dB] -25 7.5 5.0 5.0 2.5 2.5 0.0 0.0 2 3 4 5 V+ [V] Ver.2009-12-22 6 7 -50 -25 0 25 50 Ta [°C ] 75 -9- NJM2288 Voltage Conversion Gain VCG versus RF Input Frequency frf 5 Circuit 5, Prf=-35dBm, Plo=-15dBm, fif=21.3MHz VCG [dB] 0 -5 -10 100 200 300 500 1000 frf [MHz] Ver.2009-12-22 RF IN Characteristics LO IN Characteristics Circuit 3 Circuit 3 - 10 - NJM2288 [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. Ver.2009-12-22 - 11 -