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| NJM2591 Under Development 100MHz INPUT 450kHz FM IF DEMODULATOR FOR VOICE GENERAL DESCRIPTION The NJM2591 is a low-voltage, low-current FM IF demodulator IC for voice application. It includes an oscillator, mixer, limiting amplifier, quadrature detector, and active filter. The NJM2591 also has a noise detector and noise comparator with hysteresis range. NJM2591V PACKAGE OUTLINE FEATURES Low operating Voltage 1.8V to 9.0V Low Operating Current 2.5mA at V+ =2.0V Operating Frequency up to 100MHz (reference value) IF Input Frequency 450kHz (standard) Noise detector, noise comparator Bipolar Technology Package Outline SSOP16 BLOCK DIAGRAM MIX IN 16 GND 15 NOISE NOISE REC DET 14 13 RSSI 12 IF OUT 11 QUAD 10 AF OUT 9 LPF MIXER RSSI NOISE COMP QUAD DET BUFFER DETECTOR OSC IF AMP NOISE AMP FILTER AMP 1 OSC IN 2 OSC OUT 3 MIX OUT 4 V+ 5 IF IN 6 DEC 7 FIL OUT 8 FIL IN Ver.2003-05-15 -1- NJM2591 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Power Dissipation Operating Temperature Storage Temperature SYMBOL V+ PD Topr Tstg RATINGS 10.0 300 - 30 to +85 - 40 to +125 (Ta=25C) UNIT V mW C C RECOMMENDED OPERATIONAL CONDITION PARAMETER Supply Voltage SYMBOL V+ TEST CONDITIONS MIN. 1.8 TYP. 2.0 MAX. 9.0 (Ta=25C) UNIT V ELECTRICAL CHARACTERISTICS PARAMETER Current Consumption Mixer Conversion Gain Mixer 3rd Order Intercept Mixer Input Resistance Mixer Input Capacitance Mixer Output Resistance 12dB S/N Sensitivity Audio Output Level Signal to Noise Ratio AM Rejection Raito IF Amplifier Input Resistance (Ta=25C, V+=2V, fmix=21.7MHz, fif=450KHz, fmod=1kHz, fdev=1.5KHz, unless otherwise noted.) SYMBOL Iccq Gmix IP RinM CinM R oM 12dBS/N V od S/N AMR RinIF IF input Vi=80dBuVEMF IF input Vi=80dBuVEMF IF input, AM=30% Vi=80dBuVEMF TEST CONDITIONS No signal Without ceramic filter MIN. 21 1.2 70 43 1.2 TYP. 2.5 24 96 TBD TBD 1.8 11 100 65 40 1.8 MAX. 27 2.4 130 2.4 UNIT mA dB dBuV k pF k dBuV mVrms dB dB k [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. -2- Ver.2003-05-15 |
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