TWO MODULUS PRESCALER WITH STAND-BY MODE

The Fujitsu MB509 is a low power, two modulus prescaler equipped with the standby mode. The MB509 is used in conjunction with a frequency synthesizer to form a Phase Locked Loop (PLL) and will divide the input frequency by the modulus of 65/65 or 128/129.

Power consumption is typically 11.5mA at 5.0V. under normal operation, with the current reduced to180µA in standby mode. By using MB509 with the MB87076, intermittent operating mode can be achieved.

FEATURES

• High Frequency Operation: fmax = 1.1GHz max. (PIN = –4dBm min.)

• Pulse Swallow Function: 64/65, 128/129

• Power Supply Consumption: 58mW typ.

• Stand-by Current: 180µA typ.

• Stable Output Amplitude: VO = 1.6Vp–p typ.

• Complete PLL synthesizer circuit with the Fujitsu MB87076, PLL frequency synthesizer IC

• Plastic 8-pin Dual-In-Line Package (Suffix: –P)

Plastic 8-pin Mini Flat Package (Suffix: –PF)

• Built-in a Termination Resistor

Stable output amplitude is obtained up to output load capacitance of 8pF