MC3374 Datasheet | Motorola Semiconductor

Order this document by MC3374/D Low Voltage FM Narrowband Receiver . . . with single conversion circuitry including oscillator, mixer, IF amplifiers, limiting IF circuitry, and quadrature discriminator. The MC3374 is perfect for narrowband audio and data applications up to 75 MHz which require extremely low power consumption. Battery powered applications down to VCC = 1.1 V are possible. The MC3374 also includes an on- board voltage regulator, low battery detection circuitry, a receiver enable allowing a power down Sleep- Mode ™ , two undedicated buffer amplifiers to allow simultaneous audio and data reception, and a parator for enhancing FSK (Frequency Shift Keyed) data reception to 1200 baud. - Low Supply Voltage: VCC = 1.1 to 3.0 Vdc LOW VOLTAGE SINGLE CONVERSION FM RECEIVER SEMICONDUCTOR TECHNICAL DATA - - - - - - - - - - Low Power Consumption: PD = 1.5 to 5.0 m W Input Bandwidth 75 MHz Excellent Sensitivity: 0.5 µVrms for 12 d B SINAD Voltage Regulator Available (Source Capability 3.0 m A) Receiver Enable to Allow Active/Standby Operation Low Battery Detection Circuitry Self Biasing Audio Buffer Data Buffer FSK Data Shaping parator Standard 32- Lead QFP Surface Mount Package ORDERING INFORMATION Device Tested Operating Temperature Range Package TQFP- 32 FTB SUFFIX PLASTIC PACKAGE CASE 873 (Thin QFP) 32 1 Sleep- Mode is a trademark of Motorola, Inc. MC3374FTB TA = - 10° to +70°C Simplified Block Diagram Data Data Osc Mixer Mixer Mixer 2nd IF Buffer Buffer 1st IF Dcpl In Out Dcpl In Out In Out 32 31 30 29 28 27 26 25 Osc Base Osc Emit Isrc Dcpl IF Gnd VCC2 Rec Audio 1 2 3 4 5 6 Low Pass Filter Quadrature Demodulator Mixer 2nd IF Data Buffer 24 VCC3 1st IF 23 1st IF In Audio Buffer 22 Audio Buffer Out 21 Audio Buffer In Low Battery Detector 20 Low Battery Detector 19 1.2 V Select 18 VCC Voltage Reference Output Demodulator Decoupling 7 Buffer Quad Tank 8 Main Current Reference p. Receiver Enable Voltage Reference 17 Vreg - Internal Connection, do...