NJM2552 100MHz INPUT MIXER AND 450kHz FM/AM IF DEMODULATOR IC ! ! PACKAGE OUTLINE GENERAL DESCRIPTION The NJM2552 is a FM IF demodulator IC with 450kHz (standard) IF input, which operates from 2.2V to 9.0V supply. It includes an oscillator, mixer, limiting amplifier, FM/AM detectors, and RSSI circuit. The NJM2552 is suitable for FM /AM receivers for data / voice radio systems. NJM2552V ! FEATURES # # Wide Operating Voltage Low Operating Current # # # Maximum Mixer Input Frequency IF Frequency AM/FM detector circuits selectable AM SW= HIGH Simultaneous operation of AM/FM sections AM SW= LOW FM section only Built-in AGC circuit in AM section Wide Range RSSI (Received Signal Strength Indication) Bipolar Technology Package Outline SSOP20 # # # # ! 2.2V to 9.0V FM: 2.5mA at V+ =2.7V, AM SW =LOW AM and FM: 5mA at V+ =2.7V, AM SW =HIGH 100MHz (reference value) 450kHz (standard) BLOCK DIAGRAM MIX IN V+ 20 19 AM AGC RF AGC IN OUT 18 17 RSSI OUT 16 AM SW 15 AM AF OUT 14 AMP OUT 13 AM DET AMP IN 12 FM AF OUT 11 AMP -A RSSI MIXER OSC AMP Ver.2007-10-24 AGC AM AMP + - FM AMP + - FM DET 1 2 3 4 5 6 7 8 9 10 OSC (B) OSC (E) MIX OUT GND AM IF IN AM DEC FM IF IN FM DEC FM IF OUT QUAD IN -1- NJM2552 ! ABSOLUTE MAXIMUM RATINGS PARAMETER (Ta=25°C) SYMBOL RATINGS UNIT Supply Voltage V+ 12 V Power Dissipation Pd 300 mW Operating Temperature Topr -40 to +85 °C Storage Temperature Tstg - 50 to +125 °C ! RECOMMENDED OPERATING CONDITION PARAMETER CONDITIONS V+ Supply Voltage ! SYMBOL (Ta=25°C) MIN. TYP. MAX. UNIT 2.2 2.7 9.0 V MIN. TYP. MAX. UNIT - 5 6.6 mA - 2.5 3.1 mA 18 22 26 dB - 95 - dBuV ELECTRICAL CHARACTERISTICS + Ta=25°C, V =2.7V, fMIX=10.7MHz, fLO=10.25MHz, fIF=450kHz, FM: fdev=±3kHz, fmod=1kHz, AM SW=LOW AM: AM=30%, fmod=1kHz, AM SW=HIGH, unless otherwise noted. PARAMETER SYMBOL Current Consumption Iccq1 Current Consumption Iccq2 Mixer Conversion Gain Gmix Mixer 3 rd Order Intercept IIP3 CONDITIONS No signal, Circuit 1 AM SW=HIGH No signal, Circuit 1 AM SW=LOW VinMIX=40dBuV, Pin3 with ceramic filter and 1.8kΩ terminated. Circuit5 Circuit5 Mixer Input Resistance R in M - 3.6 - kΩ Mixer Input Capacitance Cin M - 3.2 - pF Mixer Output Resistance R oM - 1.8 - kΩ - 5 - dBuV 55 80 105 mVrms - 1 2 % 43 60 - dB 30 40 - dB [FM IF Section] SINAD 12dB SINAD Demodulated Output Level 1 V od1 Total Harmonic Distortion 1 THD1 Signal to Noise Ratio 1 S/N1 AM Rejection Ratio AMR Ver.2007-10-24 Mixer input, Circuit 2 fIF input, Circuit 4 VinIF =80dBuV fIF input, Cricuit4 VinIF =80dBuV fIF input, Circuit4 VinIF=80dBuV fIF input, Circuit4 VinIF=80dBuV AM=30% , -2- NJM2552 PARAMETER FM IF Amp. Input Impedance SYMBOL RinFMIF TYP. MAX. UNIT 1.2 1.8 2.4 kΩ - 0.1 0.4 V 0.8 1.1 1.4 V 1.8 2.1 2.4 V FMIFGV fIF input, Circuit4 - 120 - dB VAGC fIF input, Circuit4 VinIF =80dBuV 0.75 1.05 1.35 V 42 60 85 mVrms - 1 3 % - 2 4 % 40 44 - dB Vrssi1 RSSI Output Voltage 2 Vrssi2 RSSI Output Voltage 3 Vrssi3 RF AGC Output Voltage DC value MIN. fIF input, Circuit4 No input signal fIF input, Circuit4 VinIF=60dBuV fIF input, Circuit4 VinIF=100dBuV RSSI Output Voltage 1 FM IF Amplifier CONDITIONS [AM IF Section] Demodulated Output Level 2 V od2 Total Harmonic Distortion 2 THD2 Total Harmonic Distortion 3 THD3 Signal to Noise Ratio 2 S/N2 Demodulated Output Deviation D V od AM IF Amplifier Input Impedance RinAMIF fIF input, Circutit4 VinIF =80dBuV AGC On fIF input, Cricuit4 VinIF =60dBuV AGC On fIF input, Cricuit4 VinIF =60dBuV,AM80% AGC On fIF input, Circutit4 VinIF =80dBuV AGC On fIF input, Cricuit4 VinIF =80 to 90dBuV AGC On ±1.5 dB DC value 8 10 12 kΩ 31kHz, Circuit 3 - 47 - dB [AMP Section] Amplifier Gain ! G v AM SW pin select mode Control Voltage FM section AM section Other sections 0V to 0.3V(LOW) On Off On 0.8V to V+ (HIGH) On On On Ver.2007-10-24 -3- NJM2552 ! TEST CIRCUIT This test circuit allows the measurement of all parameters described in “ELECTRICAL CHARACTERISTICS”. This test circuit includes some electrical switches that should be in the suitable position for the measurement of each parameter. # Circuit 1 (Iccq1, Iccq2) AM AGC RF AGC IN OUT Iccq1 Iccq2 MIX IN RSSI OUT V+ C15 C14 10u 0.1u AMP IN AMP OUT FM AF OUT V+ AM SW C16 20 AM AF OUT 10u 18 19 C8 C7 R4 1000p 17 1000p 16 270k 15 14 13 12 AM DET 11 AMP -A RSSI MIXER OSC AMP 1 2 AGC AM AMP + - 3 4 5 FM AMP + - 6 7 8 C1 C3 C4 C5 1000p 68n 68n 0.1u FM DET 9 C6 0.1u 10 V+ R10 1.5k LOCAL IN # Circuit 2 (SINAD) AM AGC RF AGC IN OUT MIX IN RSSI OUT V+ 10.7 MHz AM AF OUT AMP IN AMP OUT FM AF OUT BPF V+ AM SW R2 C2 51 1000p 20 C16 19 10u 18 SINAD 0.1k to 30k C8 C7 R4 R9 C12 1000p 17 1000p 16 270k 10k 0.01u 15 14 13 AM DET 12 11 AMP -A RSSI MIXER OSC AMP 1 2 Ver.2007-10-24 AM AMP + - 3 4 5 FM AMP + - 6 7 8 9 C1 C4 C5 C6 C13 1000p 68n 68n 0.1u 0.1u 18p R10 CERAMIC FM DET 10 C3 LOCAL IN 10.25 MHz AGC 1.5k V+ CD C17 10u FILTER -4- NJM2552 # Circuit 3 (Gv) Gv AM AGC RF AGC IN OUT MIX IN RSSI OUT AM AF OUT AMP IN AMP OUT V+ V+ C10 C9 AM SW 1u 1u 31kHz FM AF OUT R5 R4 1k 270k 20 19 18 17 16 15 14 13 AM DET 12 11 AMP -A RSSI MIXER OSC AMP 1 AGC AM AMP + - 2 3 4 5 FM AMP + - 6 7 8 FM DET 9 10 C1 1000p LOCAL IN # Circuit 4 (Vod1/2, THD1/2/3, S/N1/2, AMR, Vrssi1/2/3, FMIFGV, VAGC, DVod ) Vod2 DVod THD2 S/N2 THD3 BPF VAGC Vrssi AM AGC RF AGC IN OUT MIX IN V+ 0.1k to 30k RSSI OUT AM AF OUT V+ R3 AMP OUT 20k AMP IN Vod1 THD1 S/N1 AMR FM AF OUT R8 8.2k C16 20 19 10u 18 C8 C7 C11 R9 C12 1000p 17 1000p 16 0.01u 10k 0.01u 15 14 13 AM DET 12 11 AMP -A RSSI MIXER OSC AMP 1 2 AGC AM AMP + - 3 4 5 FM AMP + - 6 7 8 9 10 C1 C3 C4 C5 C6 C13 1000p 68n 68n 0.1u 0.1u 18p R10 LOCAL IN Ver.2007-10-24 450kHz 51 FM DET 1.5k V+ CD C17 10u FMIFGV -5- NJM2552 # Circuit 5 (Gmix) 10.7MHz AM AGC RF AGC IN OUT MIX IN RSSI OUT V+ AM AF OUT AMP OUT 14 13 AMP IN FM AF OUT V+ AM SW R2 C2 51 1000p 20 19 18 17 16 15 AM DET 12 -A 11 AMP RSSI MIXER OSC AMP 1 2 AGC AM AMP + - 3 4 5 6 FM AMP + 7 8 9 FM DET 10 C1 1000p LOCAL IN 10.25MHz Ver.2007-10-24 CERAMIC FILTER Gmix 1.8k -6- NJM2552 ! TERMINAL FUNCTION (Ta=25°C , V+=2.7V , circuit 1) Pin No. SYMBOL EQUIVARENT CIRCUIT VOLTAGE V+ 1 OSC (B) 22k 2.66V 1 2 2k 2 OSC (E) FUNCTION Oscillator Base / Oscillator Emitter Colpitts - type oscillator is formed with an external oscillator element of crystal unit or SAW resonator. Output of an external oscillator circuit can also input to pin1 or pin2. 1.95V 170u GND Mixer Output An external 450kHz ceramic filter is connected. The typical output impedance is 1.8kΩ. V+ 200k 3 MIX OUT 20p 1.4k 3 1.75V 135u GND 4 GND - -- V+ 5 AM IF IN 1.35V 25u 6 1.24V AM DEC 1.35V GND V+ 7 51k FM IF IN 0.9k 7 2.66V 0.9k 8 8 2k FM DEC GND Ver.2007-10-24 AM IF Input This is an AM IF signal input to AGC amplifier. The typical input impedance is 10kΩ. 10k 5 6 Ground 80u 2.66V AM IF Decoupling This is an AM IF decoupling terminal for AGC amplifier. An external decoupling capacitor is connected to enhance stability. IF Limiter Amplifier Input This is an input to the IF amplifier after passing through 450kHz ceramic filter. The typical input impedance is 1.8kΩ. IF Decoupling An external decoupling capacitor is connected to enhance stability. -7- NJM2552 Pin No. SYMBOL EQUIVARENT CIRCUIT VOLTAGE FUNCTION 1.80V FM IF Output This is an output of FM IF signal passing though the internal FM amplifier. An external phase - shifting capacitor is connected between pin9 and pin10. V+ 9 FM IF OUT 9 95u GND Quadrature Detector Input An external phase - shifting coil or ceramic discriminator is connected. V+ 400 10 QUAD IN 400 10 2.70V 20u GND FM Demodulated Signal Output An external 3rd order multiple feed -back filter (RC filter) is connected. V+ 95u 11 FM AF OUT 100k 11 0.96V 10p GND V+ 12 AMP IN 0.66V 20u 12 13 Ver.2007-10-24 AMP OUT 13 7.3k GND Input of Amplifier for Low Pass Filter External RC components form a low pass filter between pin12 and pin13. This terminal is biased from pin 11 though an external RC filter. Output of Amplifier for Low Pass Filter 0.71V -8- NJM2552 Pin No. SYMBOL EQUIVARENT CIRCUIT VOLTAGE AM Demodulated Signal Output An external RC filter may be connected to reduce undesired signal. V+ 100u 14 AM AF OUT FUNCTION 14 1.46V GND AM Section ON /OFF Switch Both of AM and FM section are in action during AM SW=HIGH. When AM SW=LOW, AM section keeps a state of not working. 15 AM SW -50k 15 GND Received Signal Strength Indicator Output Pin 16 outputs DC level proportional to the log of input signal level to pin7. V+ 2k 16 RSSI OUT 2k 2k 2k 0.17V 16 55k GND Output of RF AGC circuit Pin 17 outputs DC voltage to control the gain of external RF amplifier. V+ 2k 17 RF AGC OUT 0.08V 17 120k GND Ver.2007-10-24 -9- NJM2552 Pin No. SYMBOL EQUIVARENT CIRCUIT VOLTAGE Gain Control of AGC Circuit for AM Signal Pin 18 is connected with pin 14 through the external ripple filter of R and C. V+ AM AGC IN 18 FUNCTION 1.46V 18 1k 25u 25u 1.51 GND Supply Voltage V+ 19 - Mixer Input The mixer is designed to work up to 100MHz with the typical input impedance of RinM = 3.6kΩ and CinM = 3.2pF(at 10.7MHz). V+ 20 MIX IN 0.94V 3.6k 3.6k 20 50 25p GND 1k 0.94 1k Note : 1. ESD protection diodes exist between each of the following pins and V+. Pin 1,2,3,5,6,7,8,9,10,11,12,13,14,16,17,18,20 2. ESD protection diodes also exist between each of the following pins and ground. Pin 1,2,3,5,6,7,8,9,10,11,12,13,14,15,16,17,18,20 Ver.2007-10-24 - 10 - NJM2552 ! 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 AM AGC RF AGC IN OUT MIX IN V+ R2 51 AMP OUT 10u 0.1u C16 10u 18 AMP IN FM AF OUT C10 20k C14 1000p 20 19 AM AF OUT V+ R3 C15 C2 RSSI OUT R8 C9 8.2k 1u R5 C8 C7 C11 R4 1000p 17 1000p 16 0.01u 270k 15 14 13 AM DET 1u 1k 12 -A R9 C12 10k 0.01u 11 AMP RSSI MIXER OSC AMP 1 2 AGC AM AMP + - 3 4 5 FM AMP + - 6 7 8 9 10 C1 C3 C4 C5 C6 C13 1000p 68n 68n 0.1u 0.1u 18p R10 LOCAL IN CERAMIC FM DET 1.5k V+ CD C17 10u FILTER Note: 1. External Components R1=R6=R7=0Ω R2=51Ω R3=20kΩ R4=270kΩ R5=1kΩ R8=8.2kΩ R9=10kΩ R10=1.5kΩ C1=C2=C7=1000pF C3=C4=68nF C5=C6=C14=0.1uF C9=C10=1uF C11=C12=0.01uF C13=18pF C15=C16=C17=10uF CF=CFWCA450KEFA-R0 (Murata manufacturing Co., Ltd.) CD=CDBCB450KCAY72-R0 (Murata manufacturing Co., Ltd.) Ver.2007-10-24 - 11 - NJM2552 # Circuit Side View LOCAL IN (OSC(B)) RF IN (MIX IN) R1 C2 R2 R3 C4 C7 NJM2552 C3 RF AGC OUT C8 C1 RSSI OUT R4 C9 C6 R5 C5 R6 C10 R8 C13 R7 R9 R10 CD HIGH OFF AM SW ON C11 LOW C12 AM AF OUT NJM2552 + GND # V+ V FM AF OUT AMP IN AMP OUT Ground Side View C16 C14 + + CF C15 C17 Ver.2007-10-24 + - 12 - NJM2552 ! Description # AM AGC Line 1. Example of external circuit FM AF OUT AM AF OUT R3 20k AM AGC Line C16 10u + 20 19 18 17 16 15 14 13 AM DET AGC IN 12 11 AMP -A RSSI MIXER OSC AMP AGC + - AM AMP FM AMP + - FM DET AM IF 1 2 3 4 5 6 7 8 9 10 CERAMIC FILTER 2. # Explanation AM AGC IN terminal (pin18) is usually connected with the AM DET terminal (pin 14) through the ripple filter of R3 and C16. This filter has the time constant of R3xC16 and this value of time constant is generally selected to be 5 to 10 times larger than the lowest cycle of the AM modulation signal (, not AM demodulated signal). AGC IN terminal (pin 18) can also be controlled by an external DC source instead of DC output of AM DET terminal. RF AGC Line RF AGC Line + + V+ V+ V 1. Example of external circuit V RF IN Tr2 Tr3 RF Amplifier 20 19 MIX IN 18 17 + V V+ 2k from IF Am p 16 RF AGC OUT Tr1 127k 120k 2. Ver.2007-10-24 Explanation RF AGC OUT terminal (pin17) can be connected to the bias circuit of the external RF amplifier to control its gain. RF AGC characteristics are shown on following page. - 13 - NJM2552 ! TYPICAL CHARACTERISTICS + Ta=25°C, V =2.7V, fMIX=10.7MHz, fLO=10.25MHz, fIF=450kHz FM: fdev=±3kHz, fmod=1kHz, AM SW=LOW AM: AM=30%, fmod=1kHz, AM SW=HIGH, unless otherwise noted. [DC Characteristics] Current Consumption versus Supply Voltage circuit 1, no signal 8 Current Consumption Iqq(mA) Current Consumption Iqq(mA) 8 Current Consumption versus Temperature 7 Iccq1 6 5 4 Iccq2 3 2 1 circuit 1, no signal 7 6 Iccq1 5 4 Iccq2 3 2 1 0 0 0 2 4 6 8 10 12 + -50 -25 0 25 50 75 100 125 Ambient Temperature Ta(°C) Supply Voltage V (V) Current Consumption versus AM SW Voltage Current Consumption Iccq(mA) 8 circuit 1, no signal 7 6 5 AM SW : High 4 3 2 Low 1 0 0 0.5 1 1.5 2 2.5 3 AM SW Control Voltage (V) Ver.2007-10-24 - 14 - NJM2552 [Mixer Characteristics] Mixer Conversion Gain versus Frequency and Temperature Mixer Conversion Gain versus Frequency and Supply Voltage circuit 5, VinMIX=40dBuV, VinLO=100dBuV 30 Mixer Conversion Gain Gmix(dB) Mixer Conversion Gain Gmix(dB) 30 V+=9V 25 V+=2.7V 20 + V =2.2V 15 10 10 100 circuit 5 , VinMIX=40dBuV , VinLO=100dBuV 25 Ta=25°C Ta=- 40°C 20 Ta=85°C 15 10 1000 10 Mixer Input Frequency fMIX(MHz) Mixer Conversion Gain vesus Local Input Level circuit 5, VinLO=100dBuV Mixer Conversion Gain Gmix(dB) 25 Mixer Output Level (dBuV) 1dB Comp.Pt. 100 80 IIP3 Desired Products 60 40 3rd Order Intermod. Products 20 circuit 5, VinMIX=40dBuV 20 15 Ta=- 40°C 10 Ta= 25°C 5 Ta=85°C 0 0 0 20 40 60 80 100 Mixer Input Level VinMIX(dBuV) Ver.2007-10-24 1000 Mixer Input Frequency fMIX(MHz) Mixer 3rd Order Intermodulation 120 100 120 40 60 80 100 120 Local Input Level VinLO(dBuV) - 15 - NJM2552 [RSSI Characteristics] RSSi Output versus IF Input and Ambient Temperature RSSI Output versus IF Input and Supply Voltage circuit 4 3 + V = 9V 2.5 2.7V 2 2.2V 1.5 1 0.5 RSSI Output Voltage Vrssi(V) RSSI Output Voltage Vrssi(V) 3 circuit 4 2.5 Ta=85°C, 25°C 2 - 40°C 1.5 1 0.5 0 0 -20 0 20 40 60 80 100 -20 120 0 IF Input Level VinIF(dBuV) 3 + RSSI Output Voltage Vrssi(V) RSSI Output Voltage Vrssi(dB) 60 80 100 120 RSSI Output versus Mixer Input and Ambient Temperature V = 9V 2.5 40 IF Input Level VinIF(dBuV) RSSI Output versus Mixer Input and Supply Voltage 3 circuit 2 , VinLO=100dBuV 20 + V =2.7V 2 V+=2.2V 1.5 1 0.5 circuit 2 , VinLO=100dBuV 2.5 Ta=85°C, 25°C 2 - 40°C 1.5 1 0.5 0 0 -20 0 20 40 60 80 100 120 -20 0 20 40 60 80 100 120 Mixer Input Level VinMIX(dBuV) Mixer Input Level VinMIX(dBuV) RSSI Output versus Temperature and IF Input Level RSSI Output Voltage Vrssi(V) 3 circuit 4 100dBuV 2.5 VinMIX=120dBuV 90dBuV 2 80dBuV 70dBuV 1.5 60dBuV 1 50dBuV 40dBuV 0.5 - 20dBuV 0 -50 -25 0 25 50 75 100 125 Ambient Temperature Ta(°C) Ver.2007-10-24 - 16 - NJM2552 [RF AGC Characteristics] RF AGC Output versus IF Input and Ambient Temperature circuit 4 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 V+=9.0V RF AGC Output Voltage VAGC(V) RF AGC Output Voltage VAGC(V) RF AGC Output versus IF Input and Supply Voltage 2.7V 2.2V 0 20 40 60 80 100 circuit 4 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 Ta=85°C, 25°C, - 40°C -20 120 0 circuit 2 , VinLO=100dBuV V+=9.0V 2.7V 2.2V 0 20 40 60 80 100 60 80 100 120 RF AGC Output versus Mixer Input and Ambient Temperature RF AGC Output Voltage (V) RF AGC Output Voltage (V) RF AGC Output versus Mixer Input and Supply Voltage -20 40 IF Input Level VinIF(dBuV) IF Input Level VinIF(dBuV) 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 20 120 2.4 2.2 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 circuit 2 , VinLO=100dBuV Ta=85°C, 25°C, - 40°C -20 0 20 40 60 80 100 120 Mixer Input Level VinMIX(dBuV) Mixer Input Level VinMIX(dBuV) RF AGC Output versus Temperature and IF Input Level RF AGC Output Voltage VAGC(V) 2 circuit 4 1.8 VinMIX=120dBuV 1.6 90dBuV 1.4 85dBuV 1.2 80dBuV 1 0.8 0.6 75dBuV 0.4 70dBuV 0.2 - 20dBuV 0 -50 -25 0 25 50 75 100 125 Ambient Temperature Ta(°C) Ver.2007-10-24 - 17 - NJM2552 [FM Demodulation Characteristics] FM AF OUT Voltage versus Frequency and Supply Voltage (S-Curve) FM AF OUT Voltage versus Frequency and Ambient Temperature (S-Curve) circuit 4 , VinIF=80dBuV 2.5 circuit 4 , VinIF=80dBuV 2.5 2 FM AF OUT Voltage(V) FM AF OUT Voltage(V) V+=9.0V 1.5 V+=2.7V 2.2V 1 0.5 0 Ta= 25°C 2 Ta=85°C 1.5 Ta=- 40°C 1 0.5 0 420 430 440 450 460 470 480 420 430 IF Input Frequency fIF(kHz) 450 460 470 480 IF Input Frequency fIF(kHz) FM Demod.Output and Distortion -IF Detuning Characteristics- FM Demod. Output versus FM Modulation Frequency 200 440 circuit 4, VinIF=80dBuV 1000 circuit 4 , VinIF=80dBuV 1000 160 140 120 100 80 60 40 Vod1 100 100 10 10 THD1 1 1 Distortion THD1(%) FM Demodulated Output Level1 Vod1(mVrms) FM Demodulated Output Level1 Vod1(mVrms) 180 20 0 0.1 1 10 430 100 70 60 -20 50 SINAD -30 40 30 AMR -50 20 N -60 10 80 S+N 0 -20 0 20 40 60 80 100 120 Mixer Input Level VinMIX(dBuV) Ver.2007-10-24 70 -10 60 SINAD -20 50 -30 40 -40 30 AMR -50 20 N -60 10 THD1 -70 470 circuit4 0 S+N, N, AMR (dB) -10 -40 10 SINAD(dB), THD1(%) 0 S+N, N, AMR (dB) 80 S+N 460 FM : S+N, N, AMR, SINAD, THD1 versus IF Input Level FM : S+N, N, AMR, SINAD, THD1 versus Mixer Input Level circuit 2 , VinLO=100dBuV 450 IF Input Frequency fIF(kHz) FM Modulation Frequency fmod(kHz) 10 440 SINAD(dB), THD1(%) 0.1 0.1 THD1 -70 -20 0 20 40 60 80 0 100 120 IF Input Level VinIF(dBuV) - 18 - NJM2552 [AM Demodulation Characteristics] AM30% : Demod. Output and Distortion versus IF Input Level circuit 2 , VinLO=100dBuV , AM=30% 100 10 10 1 1 THD2 0.1 AM Demodulated Output Level Vod2(mVrms) Vod2 100 0.1 -20 0 20 40 60 80 circuit4, AM=30% 1000 1000 Distortion THD2(%) Level Vod2(mVrms) AM Demodulated Output 1000 Vod2 100 10 1 1 THD2 0.1 100 120 0.1 -20 0 20 40 circuit4 , AM=30% 10 S+N 0 -10 -10 S+N, N (dB) S+N, N (dB) S+N 0 -20 N -40 -20 -30 N -40 -50 -50 -60 -60 -70 -70 0 20 40 60 80 100 -20 120 AM30% : Demodulated Output Level versus Supply Voltage circuit 4 , VinIF=80dBuV , AM=30% 85 40 60 80 100 120 circuit4, VinIF=80dBuV, AM=30% 80 AM Demodulated Output Level Vod2(mVrms) AM Demodulated Output Level Vod2(mVrms) 20 AM30% : Demodulated Output Level versus Ambient Temperature 80 75 70 65 60 55 50 75 70 65 60 55 50 45 45 40 40 2 4 6 8 10 + Supply Voltage V (V) Ver.2007-10-24 0 IF Input Level VinIF(dBuV) Mixer Input Level VinMIX(dBuV) 85 80 100 120 AM30% : S+N, N versus IF Input Level circuit 2 , VinLO=100dBuV , AM=30% -20 60 IF Input Level VinIF(dBuV) AM30% : S+N, N versus Mixer Input Level -30 100 10 Mixer Input Level VinMIX(dBuV) 10 1000 Distortion THD2(%) AM30% : Demod. Output and Distortion versus Mixer Input Level 12 -50 -25 0 25 50 75 100 125 Ambient Temperature Ta(°C) - 19 - NJM2552 AM80% : Demod. Output and Distortion versus IF Input Level AM80% : Demod. Output and Distortion versus Mixer Input Level 10 1 1 100 100 10 10 1 1 THD3 THD3 0.1 0.1 -20 0 20 40 60 80 0.1 100 120 0.1 -20 Mixer Input Level VinMIX(dBuV) 10 80 100 120 circui4 , AM=80% -10 S+N, N (dB) S+N, N (dB) 60 0 -20 -30 -40 -20 -30 -40 N N -50 -50 -60 -60 -70 -70 -20 0 20 40 60 80 100 120 -20 0 Mixer Input Level VinMIX(dBuV) 100 20 40 60 80 100 120 IF Input Level VinIF(dBuV) AM Demodulated Output versus AM Modulation Frequency AM Demodulated Output versus IF Input Frequency circuit4(BPF less), VinIF=80dBuV, AM=30% 100 90 circuit4, VinIF=80dBuV, AM=30% 90 AM Demodulated Output Level Vod2(mVrms) AM Demodulated Output Level Vod2(mVrms) 40 S+N S+N -10 80 70 60 50 40 30 20 10 80 fif=450kHz 70 60 50 40 30 20 10 0 0 0.1 1 10 100 AM Modulation Frequency fmod(kHz) Ver.2007-10-24 20 AM80% : S+N, N versus IF Input Level circuit 2 , VinLO=100dBuV, AM=80% 0 0 IF Input Level VinIF(dBuV) AM80% : S+N, N versus Mixer Input Level 10 1000 Vod2 Level Vod2(mVrms) 10 AM Demodulated Output 100 Distortion THD3(%) AM Demodulated Output Level Vod2(mVrms) Vod2 100 circuit4, AM=80% 1000 1000 Distortion THD3(%) circuit 2 , VinLO=100dBuV , AM=80% 1000 0.1 1 10 100 IF Input Frequency fIF(MHz) - 20 - NJM2552 [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.2007-10-24 - 21 -