U289, U2891B, U2891BAFS Selling Leads, Datasheet
MFG:SILICONI ? Package Cooled:09+ D/C:09+
U289, U2891B, U2891BAFS Datasheet download
Part Number: U289
MFG: SILICONI ?
Package Cooled: 09+
D/C: 09+
U289, U2891B, U2891BAFS
- Table of contents:
Info of U289
Info of U2891B
Info of U2891BAFS
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About U2891B
PDF/DataSheet Download
Datasheet: U2891B
File Size: 50610 KB
Manufacturer: Atmel
Download : Click here to Download
About U2891B
PDF/DataSheet Download
Datasheet: U2891B
File Size: 50610 KB
Manufacturer: Atmel
Download : Click here to Download
About U2825DW
PDF/DataSheet Download
Datasheet: U2825DW
File Size: 936503 KB
Manufacturer: TI [Texas Instruments]
Download : Click here to Download
U2891B General Description
The U2891B is a silicon monolithic IC made with TEMIC Semiconductors' advanced UHF process.
The IC consists of a 500-MHz I/Q quadrature modulator and a 2.5-GHz mixer. Both parts can be connected via an external filter in order to suppress harmonics and spurious products. The device features 3-V operation, low-current consumption and furthermore two separate power-down functions for modulator and mixer. The RF ports are single-ended and the device can be operated adjustment free. These features and the double-conversion concept of U2891B make this device perfectly suited for all digital radio applications from 900 MHz up to 2.5 GHz (e.g., GSM, DCS 1800, JDC, PHP and WLAN).
Electrostatic sensitive device. Observe precautions for handling.
The IC consists of a 500-MHz I/Q quadrature modulator and a 2.5-GHz mixer. Both parts can be connected via an external filter in order to suppress harmonics and spurious products. The device features 3-V operation, low-current consumption and furthermore two separate power-down functions for modulator and mixer. The RF ports are single-ended and the device can be operated adjustment free. These features and the double-conversion concept of U2891B make this device perfectly suited for all digital radio applications from 900 MHz up to 2.5 GHz (e.g., GSM, DCS 1800, JDC, PHP and WLAN).
Electrostatic sensitive device. Observe precautions for handling.
U2891B Maximum Ratings
| Parameters | Symbol | Value | Unit |
| Supply voltage Pins 8, 20 and 21 | VS, VScp | 6 | V |
| Input voltage Pins 2, 3, 4, 5, 9, 11, 12, 22 and 23 | Vi | 0 to VS | V |
| Junction temperature | Tj | 125 | °C |
| Storage-temperature range | Tstg | 40 to +125 | °C |
U2891B Features
Low power consumption: 25 mA / 3 V (typical at 8 dBm output level)
2.5 GHz output frequency
Excellent sideband suppression by means of duty cycle regeneration and 90° phase control
Separate power-down mode for modulator and mixer
Low LO input level: 10 dBm (typical)
LO and RF port 50- single-ended
2.5 GHz output frequency
Excellent sideband suppression by means of duty cycle regeneration and 90° phase control
Separate power-down mode for modulator and mixer
Low LO input level: 10 dBm (typical)
LO and RF port 50- single-ended
U2891B Connection Diagram
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