The U2893B is a monolithic integrated circuit realized using TEMIC's advanced silicon bipolar UHF5S technology. It integrates a mixer, an I/Q modulator, a phase-frequency detector (PFD) with two synchronous-programmable dividers, and a charge pump. The U2893B 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 exhibits low power consumption, and the power-down function extends battery life.
The TEMIC U2893B is a monolithic integrated circuit realized using advanced silicon bipolar technology. It integrates an I/Q modulator, a mixer, and a phase-frequency detector with synchronous-programmable dividers and a charge pump. The device is specifically designed for cellular phone applications including GSM, DCS1800, and PCS1900.
| Supply voltage range | 2.7 to 5.5 V |
|---|---|
| Operating ambient temperature | -20 to +85 °C |
| N:1 divider frequency range | 100 to 650 MHz |
| R:1 divider frequency range | 100 to 400 MHz |
| Package type | SSO28 (shrinked small-outline 28-pin) |
It is designed for cellular phones such as GSM, DCS1800, and PCS1900.
The device is designed for cellular phones such as GSM, DCS1800, and PCS1900.