U2790B-MFP Datasheet, PDF (1/15 Pages) ATMEL Corporation – Supply Voltage 5 V (Typically)

Features
• Supply Voltage 5 V (Typically)
• Very Low Power Consumption: 150 mW (Typically) for -1 dBm Output Level
• Very Good Sideband Suppression by Means of Duty Cycle Regeneration of the LO
Input Signal
• Phase Control Loop for Precise 90° Phase Shifting
• Power-down Mode
• Low LO Input Level: -10 dBm (Typically)
• 50-W Single-ended LO and RF Port
• LO Frequency from 100 MHz to 1 GHz
• SO16 Package01/03
Benefits
• No External Components Required for Phase Shifting
• Adjustment Free, Hence Saves Manufacturing Time
• Only Three External Components Necessary, this Results in Cost and Board Space
Saving
Electrostatic sensitive device.
Observe precautions for handling.
1000-MHz
Quadrature
Modulator
U2790B
Description
The U2790B is a 1000-MHz quadrature modulator using Atmel´s advanced UHF pro-
cess. It features a frequency range from 100 MHz up to 1000 MHz, low current
consumption, and single-ended RF and LO ports. Adjustment-free application makes
the direct converter suitable for all digital radio systems up to 1000 MHz, e.g., GSM,
ADC, JDC.
Figure 1. Block Diagram
8
BB_AI
7
BB_AI
S_{PU PU}
6
1
Power
V
up
S
5,4
LO _i
12
Duty cycle
regenerator
15
Ph_adj ¹⁶
BB_Bi ⁹
BB ¹⁰
BI
Frequency
doubler
0°
90°
90°/control
loop
S
RF
O
3
2,11,13,14
GND
Rev. 4583A–CELL–01/03
1