NJM2294 FM IF IC FOR PAGER GENERAL DESCRIPTION PACKAGE OUTLINE NJM2294 is a super low current FM IF IC for pagers. It includes almost all functions of the paging IF system. In those functions, the RSSI function can be used for automatic gain control. When the electric field strength is high, the RSSI output signal can control the NJM2294V attenuation of an RF amplifier to improve the received condition. FEATURES + Low Operating Voltage (V =1.1 to 4.0V) + Super low Operating Current (600A, V =1.4V) RSSI (Received Signal Strength Indicator) FSK wave shaper Battery check alarm function (Alarm Voltage=1.1V typ.) Battery saving function A high output current voltage regurator with an external transistor (Vreg=1.0V typ.) A ceramic discriminator is available. Package Outline SSOP16 Bipolar Technology RECOMMENDED OPERATIONAL CONDITION + Operating Voltage V 1.1 to 4.0V PIN CONFIGURATION NJM2294V Ver.2018-03-09 - 1 - NJM2294 ABSOLUTE MAXIMUM RATINGS (T =25C) a PARAMETER SYMBOL RATINGS UNIT Supply Voltage V+ 5 V Power Dissipation P 300 mW D Operating Temperature Range T -20 to +75 C opr Storage Temperature Range T -40 to +125 C stg + ELECTRICAL CHARACTERISTICS (V =14V, f=455kHz, fmod=600Hz, fdev=4kHz,T =25C) i a TEST PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT CIRCUIT + No signal Operating Current I 11 V=0, 10pin=V - 600 900 A CCq I Battery saving Operating Current I 12 V=0, 10pin=GND - 0 5 A CCs I IF amplifier input resistance R - - 2 - k IN S / N 1 S / N 1 1 V=60dBEMF - 62 - dB I S / N 2 S / N 2 1 V=25dBEMF - 35 - dB I -3dB limitting sensitivity V (lim) 1 - 22 27 dBEMF IN Demodulated output level V 1 V=60dBEMF 30 46 65 mVrms OD I AM rejection ratio AMR 1 V=60dBEMF, AM=30% - 50 - dB I Duty ratio of wave shaped output DR 2 V=60dBEMF 40 50 60 % I RSSI output voltage V 10 V=80dBEMF 0.48 0.62 0.76 V RSSI I RSSI output resistance R - - 62 - k RSSI Quick charge / discharge current Ich 13 4pin=GND, 8pin=0.18V 35 65 110 A Alarm voltage V 3 1.05 1.10 1.15 V alm Regulator output voltage Vreg 8 RL=430 0.95 1.00 1.05 V Low level output voltage of VALM V L 4 IL=100A - 0.1 0.4 V alm terminal High level leak current of VALM terminal I H 5 - 0 2 A alm Low level output voltage of FSK-OUT V L 6 IL=100A - 0.1 0.4 V fsk terminal High level leak current of FSK-OUT I H 7 - 0 2 A fsk terminal Low level output voltage of REG-CONT V L 9 IL=100A - - 0.6 V reg terminal Ver.2018-03-09 - 2 -