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| GL3361 GL3361 Low Power Narrow Band FM IF Pin Configurations Description The GL3361 is designed for use in FM dual conversion communications equipment. This device contains an Oscillator, Mixer, Limiting Amplifier, Filter Amplifier and OSC1 1 Squelch circuitry. OSC2 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 MIXIN GND MUTE SCAN SQIN FLTOUT FLTIN AFOUT Features MIXOUT * Operating Voltage : 2.0 ~ 8.0 V * Low Power Consumption (2.6mA typical @ Vcc=4.0Vdc) VCC * Excellent Input Sensitivity (-3dB limiting=2.6 A typical) LIMIN * Minimum Number of External Parts Required DEC1 * Full ESD Protection * Package Type : 16 DIP/SOP DEC2 QUAD Block Diagram IF input 16 GND 15 Mute 14 Scan control 13 Squelch Filter input output 12 11 Filter Amp Filter input 10 + Audio output 9 AF Amp Squelch Trigger with Hysteresis Demodulator Mixer Limiter Amp Oscillator 1 2 3 Mixer output 4 Vcc 5 Limiter input 6 7 8 Crystal OSC Decoupling Quad coil The information in this document is subject to change without notice. 1 GL3361 Absolute Maximum Ratings (Ta=25 Characteristics Power Supply Voltage Operating Supply Voltage Range Operating Temperature Range Storage Temperature Range , E unless otherwise noted) Pin 4 4 - Symbol Vcc(max) Vcc Ta Tstg Value 10 2.0 to 8.0 0 to +70 -65 to +150 Unit Vdc Vdc E E * Notice : Absolute maximum ratings are values beyond which permanent damage to the device may occur. Electrical Characteristics ( Vcc=4.0Vdc, fo=10.7MHz, a= 3/4 kHz,fmod=1.0kHz,Ta=25 E unless otherwise noted ) f 3 , Spec. Characteristics Symbol Test conditions Min Icc_off Operating Current ( No signal ) Icc_on Recovered Audio Output Voltage Input Limiting Voltage Total Harmonic Distortion Drop Voltage AF Gain Loss Detector Output Impedance Filter Gain Filter Output Voltage Mute Function Low Mute Function High Scan Function Low Scan Function High Trigger Hysteresis Mixer Conversion Gain Mixer Input Resistance Mixer Input Capacitance Vout Vin(lim) THD av G Zout Gflt Vflt Rmute_L Squelch on ( V12 = GND ) Rmute_H Vscan_L Squelch off ( V12 = 1V ) Squelch off ( V12 = 1V ) Vin = 0.3mVrms Vcc = 4V -> 2V Squelch off ( V12=1V ) Vin = 10mVrms -3dB limiting 4.2 120 -3.0 40 0.5 3.0 5.2 160 2.6 0.86 -0.6 550 50 0.7 45 11 0 3.8 50 26 3.3 9.0 6.2 6.0 0.9 0.4 mA AEms r Ams r % dB U dB Vdc U U V V mV dB U pF Squelch on ( V12=GND ) 2.0 Typ 2.5 Max 3.5 mA Units Vscan_H Squelch on ( V12 = GND ) VTH Gmix Ri Ci Squelch on/off 2 GL3361 Pin Descriptions No. 1 2 3 4 5 6 7 8 Symbol OSC1 OSC2 MIXOUT VCC LIMIN DEC1 DEC2 QUAD Function The base of the colpitts oscillator The emitter of the colpitts oscillator Output of the Mixer Supply voltage Input to the IF amplifier IF decoupling IF decoupling Quadrature tuning coil No. 9 10 11 12 13 14 15 16 Symbol AFOUT FLTIN FLTOUT SQIN SCAN MUTE GND MIXIN Function Recovered audio output Filter amplifier input Filter amplifier output Squelch input Scan control output Mute output Ground Input of the Mixer Test Circuit Mixer input 10.7MHz Audio Mute Scan Control Squelch SW Input Filter Amp Output Filter Amp Input AF Output 0.01 1.0 510 1.0 51 10k 0.01 470k 16 15 14 13 12 11 10 9 GL3361 1 68pF 10.245MHz 2 3 4 5 6 7 8 FLT 0.1 220pF 20k 0.1 8.2k Quad Coil 0.1 Vcc C - unless noted , FLT - muRata Erie North America Type CFU455D2 or equivalent Quadrature Coil - Toko America Type 7MC-8128Z or equivalent 3 GL3361 Application Circuit Vcc SCAN control 100k RF input 4.7 1.0k 4.7k 10 3.3k 0.1 0.001 6.8k 3.3k 10k 470k 0.01 0.001 0.022 0.047 AUDIO output 51 16 15 14 13 12 11 10 9 GL3361 1 68pF 10.245MHz 2 3 4 5 6 7 8 FLT 0.1 220pF 20k 0.1 Quad Coil 0.1 FLT - muRata Erie North America Type CFU455D2 or equivalent Quadrature Coil - Toko America Type 7MC-8128Z or equivalent Units : R = U C = unless noted , 4 22k 18k |
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