NJM2552 JRC, NJM2552 Datasheet
NJM2552
Related parts for NJM2552
NJM2552 Summary of contents
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... GENERAL DESCRIPTION The NJM2552 demodulator IC with 450kHz (standard) IF input, which operates from 2. 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. FEATURES Wide Operating Voltage Low Operating Current ...
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... SW=LOW Mixer input, Circuit input, Circuit VinIF =80dBuV FM IF input, Cricuit4 VinIF =80dBuV FM IF input, Circuit4 VinIF=80dBuV IF input, Circuit4 AM=30%, VinIF=80dBuV NJM2552 (Ta=25°C) UNIT V mW °C °C (Ta=25°C) MIN. TYP. MAX. UNIT 2.2 2.7 9.0 V MIN ...
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... VinIF =60dBuV,AM80% AGC input, Circutit4 VinIF =80dBuV AGC input, Cricuit4 VinIF =80 to 90dBuV AGC value G v 31kHz, Circuit 3 FM section AM section On Off On On NJM2552 MIN. 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 ...
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... AM DET -A AMP FM AMP FM + DET - 0.1u 0.1u 68n R10 1. AMP AMP FM AF OUT OUT IN OUT BPF 0.1k to 30k R9 C12 10k 0.01u DET -A AMP FM AMP FM + DET - C13 0.1u 18p 68n 0.1u R10 CD 1.5k NJM2552 SINAD C17 10u - 4 - ...
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... THD2 S/N2 BPF THD3 0.1k to 30k FM AF AMP AMP OUT OUT OUT R8 8.2k R9 C11 10k 0.01u DET -A AMP RSSI FM AMP FM + DET - C13 C4 C6 0.1u 18p 68n 0.1u R10 CD 1.5k FMIFGv NJM2552 31kHz Vod1 THD1 S/N1 AMR C12 0.01u V + C17 10u - 5 - ...
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... RSSI RF AGC IN OUT OUT + RSSI MIXER OSC AGC AM AMP + - AMP 10001p 10001p LOCAL IN CERAMIC FILTER AMP AMP OUT OUT OUT DET -A AMP FM AMP FM + DET - Gmix 1.8k NJM2552 - 6 - ...
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... GND V+ 51k 0.9k 0. 80u GND NJM2552 VOLTAGE FUNCTION Oscillator Base / Oscillator Emitter Colpitts - type oscillator is formed 2.66V 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 Mixer Output An external 450kHz ceramic filter is connected ...
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... GND V+ 95u 100k 11 10p GND V+ 20u 12 13 7.3k GND NJM2552 VOLTAGE FUNCTION FM IF Output This is an output signal passing though the internal FM amplifier. An external phase - shifting capacitor is connected between pin9 and pin10. 1.8V Quadrature Detector Input An external phase - shifting coil or ceramic discriminator is connected ...
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... GND 55k GND 2k 17 120k GND NJM2552 VOLTAGE FUNCTION AM Demodulated Signal Output An external RC filter may be connected to reduce undesired signal. 1.46V 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. ...
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... GND - V+ 3.6k 3.6k 50 25p 1k 1k GND NJM2552 VOLTAGE FUNCTION Gain Control of AGC Circuit for AM Signal Pin 18 is connected with pin 14 through the external ripple filter of R and C. 1.46V Supply Voltage - Mixer Input The mixer is designed to work up to 100MHz with the typical input impedance of RinM = 3.6kΩ ...
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... CERAMIC FILTER C3=C4=68nF C5=C6=C14=0.1uF C13=18pF C15=C16=C17=10uF FM AF AMP AMP OUT OUT IN C10 8. C11 R4 1k 10k 0.01u 270k DET -A AMP FM AMP FM + DET - C13 C6 0.1u 18p 0.1u R10 CD 1.5k C9=C10=1uF NJM2552 C12 0.01u V + C17 10u - 11 - ...
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... Circuit Side View NJM2552 GND Ground Side View C16 + Ver.2006-11-06 LOCAL (OSC(B)) (MIX IN C13 CD C12 FM AF AMP V+ OUT + C15 + C17 NJM2552 R3 RF AGC OUT RSSI OUT R6 C11 AM AF OUT AMP IN OUT CF OFF ...
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... AM AGC Line C16 10u + AGC IN MIXER OSC AGC AM AMP + - AMP CERAMIC FILTER RF AGC Line RF IN Tr3 RF Amplifier NJM2552 OUT OUT DET -A AMP RSSI FM AMP + - MIX IN ...
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... Low 0 Control Voltage (V) Ver.2006-11-06 Iccq1 Iccq2 High 1.5 2 2.5 3 NJM2552 Current Consumption versus Temperature circuit 1, no signal Iccq1 5 4 Iccq2 -50 - 100 125 Ambient Temperature Ta(° ...
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... Mixer Input Level VinMIX(dBuV) Ver.2006-11-06 V+=9V V+=2.7V V+=2.2V 100 1000 IIP3 3rd Order Intermod. Products 60 80 100 120 NJM2552 Mixer Conversion Gain versus Frequency and Temperature circuit 5, VinMIX=40dBuV, VinLO=100dBuV 30 25 Ta=25°C Ta=- 40°C 20 Ta=85° 100 Mixer Input Frequency fmix(MHz) Mixer Conversion Gain vesus ...
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... V+=2. 100 120 100dBuV 90dBuV 80dBuV 70dBuV 60dBuV 50dBuV 40dBuV - 20dBuV 100 125 NJM2552 RSSi Output versus IF Input and Ambient Temperature circuit 4 3 2.5 Ta=85°C, 25°C 2 1.5 1 0 Input Level VinIF(dBuV) RSSI Output versus IF Input and Ambient Temperature ...
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... V+=9.0V 2.7V 2. 100 120 90dBuV 85dBuV 80dBuV 75dBuV 70dBuV - 20dBuV 100 125 NJM2552 RF AGC Output versus IF Input and Ambient Temperature circuit 4 2.4 2.2 2 Ta=85°C, 25°C, - 40°C 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0 Input Level VinIF(dBuV) RF AGC Output versus Mixer Input and Ambient Temperature VinLO=100dBuV 2 ...
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... S SINAD 40 30 AMR THD1 100 120 NJM2552 FM AF OUT Voltage versus Frequency and Ambient Temperature (S-Curve) circuit 4, VinIF=80dBuV 2.5 Ta= 25°C 2 Ta=85°C 1.5 Ta=- 40°C 1 0.5 0 420 430 440 450 460 IF Input Frequency fif(kHz) FM Demod.Output and Distortion ...
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... Vod2 100 10 1 THD2 0 100 120 S 100 120 NJM2552 AM30% : Demod. Output and Distortion versus IF Input Level circuit4, AM=30% 1000 Vod2 100 10 1 THD2 0.1 - 100 120 IF Input Level VinIF(dBuV) AM30% : S+N, N versus IF Input Level ...
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... Ver.2006-11-06 1000 Vod2 100 10 1 THD3 0 100 120 S 100 120 10 100 NJM2552 AM80% : Demod. Output and Distortion versus IF Input Level circuit4, AM=80% 1000 Vod2 100 10 1 THD3 0.1 - 100 120 IF Input Level VinIF(dBuV) AM80% : S+N, N versus IF Input Level ...
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... Ver.2006-11-06 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 ...