IF AMPLIFIER IC WITH ON-CHIP MIXER FOR DIGITAL CELLULAR PHONES

The µPC8001 is a 3-volt IF amplifier IC with an on-chip mixer developed for digital cellular phones. The µPC8001 consists of a high-sensitivity limiter amplifier with an input frequency of 455 kHz, a high-speed and high-precision linear RSSI (received signal strength indicator ), and a second mixer with an input frequency of 80 to 150 MHz.
The µPC8001 features a low 3 mA (TYP.) and 2.2 µA (TYP.) current consumption at normal operation and power-OFF, respectively. Its high-speed charge/discharge circuit enables fast power-ON/OFF switching.
The µPC8001 boasts an extremely small size packaged in a 14-pin plastic shrink SOP, and low external capacitances of less than 0.01 µF, in addition to an on-chip RSSI output resistor, and is most suitable for high-density mounting.

FEATURES
• Low-voltage operation…3 V ±10%
• Low power consumption…(VCC = 3 V)
• High limiting sensitivity…–91 dBm (TYP.)
• High-precision RSSI linearity…±0.5 dB (TYP.) (VIF IN = –86 to –6 dBm)
• High-speed RSSI response time
• High-speed power-ON/OFF switching time
• External capacitors of less than 0.01 µF
• On-chip RSSI output resistor (34 kΩ)
• Ultra-compact package…14-pin plastic shrink SOP