Product Summary

The U2893B-AFSG3 is a monolithic integrated circuit. It is realized using TEMIC advanced silicon bipolar UHF5S technology. The device integrates a mixer, an I/Q modulator, a phase-frequency detector (PFD) with two synchronous-programmable dividers, and a charge pump. The U2893B-AFSG3 is designed for cellular phones such as GSM, DCS1800, and PCS1900, applying a transmitter-architecture where the VCO is operated at the TX output frequency. The U2893B-AFSG3 exhibits low power consumption, and the powerdown function extends battery life. The IC is available in a shrinked small-outline 28–pin package (SSO28).

Parametrics

U2893B-AFSG3 absolute maximum ratings: (1)Supply voltage VS1,VS2,VS3: ≤ Vysp V; (2)Supply voltage charge pump VSP: 5.5 V; (3)Voltage at any input: -0.5 ≤ Vvs +0.5 ± 5.5 V; (4)Current at any input / output pin except CPC: 2 mA; (5)CPC output currents: 5 mA; (6)Ambient temperature: -20 to +85 ℃; (7)Storage temperature: -40 to +125 ℃.

Features

U2893B-AFSG3 features: (1)Supply voltage down to 2.7 V; (2)Current consumption 40 mA; (3)Power-down function; (4)Low-current standby mode; (5)High-speed PFD and charge pump; (6)Integrated dividers.

Diagrams

U2893B-AFSG3 pin connection