100MHz INPUT 450kHz FM IF DEMODULATOR IC
NJM2591
www.DataSheet4U.com
100MHz INPUT 450kHz FM IF DEMODULATOR IC FOR VOICE
GENERAL DESCRIPTION
The NJM2591 is a wid...
Description
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...
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