NJM2591

NJM2591 www.DataSheet4U.com 100MHz INPUT 450kHz FM IF DEMODULATOR IC FOR VOICE GENERAL DESCRIPTION The NJM2591 is a wide - operating 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. PACKAGE OUTLINE NJM2591V FEATURES Wide Operating Voltage Low Operating Current Maximum Input Frequency IF Frequency Bipolar Technology Package Outline 1.8V to 9.0V 2.5mA type. at V+ =2.0V 100MHz ( reference value ) 450kHz ( standard ) SSOP16 BLOCK DIAGRAM MIX IN 16 NOISE NOISE REC DET 14 13 IF OUT 11 AF OUT 9 LPF NOISE COMP BUFFER NOISE DET IF AMP OSC NOISE AMP FILTER AMP RSSI QUAD DET GND 15 MIXER RSSI 12 QUAD 10 1 OSC IN 2 OSC OUT 3 MIX OUT 4 V+ 5 IF IN 6 DEC 7 FIL OUT 8 FIL IN Ver.2004-08-25 -1- NJM2591 www.DataSheet4U.com 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=25°C) UNIT V mW °C °C (Ta=25°C) MIN. 1.8 TYP. 2.5 MAX. 9.0 UNIT V RECOMMENDED OPERATING CONDITION PARAMETER Supply Voltage SYMBOL V+ TEST CONDITIONS ELECTRICAL CHARACTERISTICS (Ta=25°C, V+=2.0V, fmix=21.7MHz, flo=21.25MHz, fif=450kHz, fmod=1kHz, fdev=±1.5kHz, unless otherwise noted.) PARAMETER Current Consumption Mixer Conversion Gain Mixer 3 rd Order Intercept Mixer Input Resistance Mix...