. . . 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 comparator for enhancing FSK (Frequency Shift Keyed) data reception to 1200 baud.

? Low Supply Voltage: VCC = 1.1 to 3.0 Vdc

? Low Power Consumption: PD = 1.5 to 5.0 mW

? Input Bandwidth 75 MHz

? Excellent Sensitivity: 0.5 μVrms for 12 dB SINAD

? Voltage Regulator Available (Source Capability 3.0 mA)

? Receiver Enable to Allow Active/Standby Operation

? Low Battery Detection Circuitry

? Self Biasing Audio Buffer

? Data Buffer

? FSK Data Shaping Comparator

? Standard 32–Lead QFP Surface Mount Package