UTC MC3361BP LINEAR INTEGRATED CIRCUIT LOW VOLTAGE/POWER NARROW BAND FM IF DESCRIPTION The UTC MC3361BP is designed for use in FM dual conversion communication. It contains a complete narrow band FM demodulation system operable to less than 2.5V supply voltage. This low-power narrow-band FM IF system provides the second converter, second IF, demodulator. Filter Amp and squelch circuitry for communications and scanning receivers. SOP-16 FEATURES DIP-16 *Low power consumption (4.0mA typ. at Vcc=4.0V) *Excellent input sensitivity (-3dB limiting, 2.0µVrms typ.) *Minimum number of external components required. *Operating Voltage:2.5~7.0V APPLICATIONS *Cordless phone (for home use) *FM dual conversion communications equipment PIN CONFIGURATION UTC OSC 1 16 RF INPUT OSC 2 15 GND MIXER OUTPUT 3 14 MUTE Vcc 4 SCAN 13 CONTROL LIMITER INPUT 5 12 SQUELCH INPUT DECOUPLING 6 11 FILTER OUTPUT DECOUPLING 7 10 FILTER INPUT QUADRATURE INPUT 8 9 AUDIO OUTPUT UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R108-010,A UTC MC3361BP LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS(TA=25°C) PARAMETER SYMBOL VALUE UNIT Max. Supply Voltage Vcc(max) 10 V Supply Voltage Range Vcc 2.5 to 7.0 V Detector Input voltage VI(DET) 1.0 Vp-p RF Input Voltage (Vcc>=4.0V) VI(RF) 1.0 Vrms Mute Function VMUTE -0.5 ~ + 5.0 Vpeak Operating Temperature TOPR -20 to +70 °C Storage Temperature TSTG -65 to +150 °C Note: Absolute maximum ratings are those values beyond which permanent damage to the device may occur. These are stress ratings only and functional operation of the device at or beyond them is not implied. Long exposure to these conditions may affect device reliability. ELECTRICAL CHARACTERISTICS (Vcc=4.0V, fo=10.7MHz,∆f=+-3KHz,Ta=25°C, unless otherwise specified) PARAMETER SYMBOL TEST CONDITIONS Operating Current Icc Input Limiting voltage Detector Output voltage Detector Output Impedance Audio Output Voltage Filter Gain Filter Output DC Voltage Trigger Hysteresis of filter Mute Switch-on Resistance Mute Switch-off Resistance Scan Control “Low” Output Scan Control “High” Output Mixer Conversion Gain Mixer Input Resistance Mixer Input Capacitance UTC VI(LIM) VO(DET) ZO(DET) VO GV VO(DC) VTH RON(MUTE) ROFF(MUTE) VL(SCAN) VH(SCAN) GV(MIXER) RI(MIXER) CI(MIXER) MIN Squelch off (V12=2V) Squelch on (V12=GND) -3.0dB limiting Vin=10mV f=10KHz,Vin=5mV 100 40 Mute “ Low” Mute “ High” Mute off (V12=2V) Mute on (V12=GND) 3.0 TYP MAX 4.0 6.0 2.0 2.0 400 160 48 1.5 50 10 10 UNIT mA 0.5 24 3.3 2.2 UNISONIC TECHNOLOGIES CO., LTD. µV Vdc Ω mVrms dB Vdc mV Ω MΩ Vdc Vdc dB KΩ pF 2 QW-R108-010,A UTC MC3361BP LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT Vcc 10.245MHz 0.01µ 1 2 15 3 14 4 13 Vcc SCAN CONTROL MC3361BP 50K 12 0.1µ 0.1µF 6 11 0.1µ 20K 51K 7 10 8 9 102 470K 0.1µF 1N4148 68K 3.3µF 750 8.2K 0.01µF 10K 0.01µF 0.1µ SQUELCH SENSITIVITY AUDIO VOLUME 5 120K MURATA CFU 455D 455KHz FILTER 68p RF INPUT 51K 510Ω 220p 16 0.01µF AUDIO OUT QUAD COIL TOKO TYPE RMC-2A6597HM In the above typical application, the audio signal is recovered using a conventional quadrature FM detector. The absence of an input signal is indicated by the presence of noise above the desired audio frequencies. This “noise band: is monitored by an active filter and a detector. A squelch trigger circuit indicates the presence of noise (or a tone) by an output which can be used to control scanning. At the same time, an internal switch is operated which can be used to mute the audio. UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R108-010,A