INTRODUCTION
The KA8513B is designed for FM IF Detection on the pager set. It includes a voltage regulator, low battery detection circuitry, Mixer, Oscillator, FSK comparator and limiting IF Amplifier.

FEATURES
• Operating voltage range: 1.0 ~ 4.0V
• Typical supply current: 1.1mA at 1.4V
• Low battery detection circuit (alarm function): 1.05V
• Voltage regulator: Vreg = 1.0V (Typ.)
• Mixer operating frequency: 10 ~ 50MHz
• High transmitting rate: 1200bps / 2400bps
• FSK Data reception
• Package type: 20-SSOP (0.65mm)