The U2895B is a monolithic integrated circuit designed for cellular phones such as GSM900, DCS1800, and PCS1900, applying a transmitter architecture at which the VCO operates at the TX output frequency. It has low power consumption, high flexibility and small package.
The U2895B 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 device is designed for cellular phones such as GSM900, DCS1800, and PCS1900, applying a transmitter architecture where the VCO operates at the TX output frequency, eliminating the need for a duplexer.
| Supply voltage range | 2.7 V to 5.5 V |
|---|---|
| Current consumption | 50 mA |
| Package type | SSO28 |
| Operating temperature | -20 to +85 °C |
| Storage temperature | -40 to +125 °C |
| N:1 divider frequency | 100 to 600 MHz |
| R:1 divider frequency | 100 to 600 MHz |
The U2895B is designed for cellular phones such as GSM900, DCS1800, and PCS1900.
The maximum permissible voltage difference is 200 mV.