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
• FSK Data Reception
• Package Type: 20 ssop (0.65mm)