Nisshinbo Micro Devices Inc. NJM2593V-TE1

The NJM2593 is an FM IF demodulator IC with 450kHz (standard) IF frequency, which operates from 1.8V to 9V supply, low-current. It includes an oscillator, mixer, limiting amplifier, quadrature detector, active filter, and FSK comparator. The NJM2593 also has a RSSI circuit and RSSI comparator for carrier sense.

• Wide Operating Voltage 1.8V to 9.0V
• Low Operating Current 1.2mA type. at V⁺ = 2.0V, external local oscillator input
• Maximum Mixer Input Signal Frequency 50MHz (reference value)
• Mixer Input Resistance 4.5kΩ (reference value)
• IF Frequency 450kHz (standard)
• Conventional Quadrature Detector
• External Phase-shifting Capacitor
• External Discriminator or LC Resonant Circuit
• RSSI Comparator with Open-Collector Output
• Quick Charge/Discharge Circuit for FSK Reference Voltage
• Bipolar Technology
• Package Outline SSOP20