U2790B
| Model | U2790B |
| Description | 1000-MHz QUADRATURE MODULATOR |
| PDF file | Total 15 pages (File size: 227K) |
| Chip Manufacturer | ATMEL |
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
•
•
•
•
•
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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
1000-MHz
Quadrature
Modulator
U2790B
Electrostatic sensitive device.
Observe precautions for handling.
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
S
PU
BB
AI
BB
AI
8
7
6
Power
up
PU
1
V
S
5,4
LO
i
Ph
adj
BB
Bi
BB
BI
12
15
16
9
10
Duty cycle
regenerator
Frequency
doubler
0°
90°
90°/control
loop
S
RF
O
3
2,11,13,14
GND
Rev. 4583A–CELL–01/03
1
Related PDFs
| Model | Description | Manufacturer | Operation |
|---|---|---|---|
 U2790B-BFP
|
Modulator, Quadraphase, 0MHz Min, 250MHz Max, SO-16, 16 PIN | TEMIC | Preview |
