器件名称: U2790B-NFPG3H
功能描述: 1000-MHz Quadrature Modulator
文件大小: 322.56KB 共16页
简 介:Features
Supply Voltage 5V (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- Single-ended LO and RF Port LO Frequency from 100 MHz to 1 GHz SO16 Package
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.
1. Description
The U2790B is a 1000-MHz quadrature modulator using Atmel’s advanced UHF process. 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 1-1. Block Diagram
SPU BBAI BBAI
8 7 6 Power up
PU
1
VS
5,4
LO i Phadj BBBi BBBI
12 15 16 9 10
Duty cycle regenerator
Frequency doubler
0° 90°
90°/control loop
Σ 3
RFO
2,11,13,14
GND
4583D–CELL–07/06
2. Pin Configuration
Figure 2-1. Pinning SO16
PU
GND RFO VS VS SPD BBAi BBAi
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
Phadj Phadj GND GND LOi GND BBBi BBBi
Table 2-1.
Pin 1 2, 11, 13, 14 3 4, 5 6 7 8 9 10 12 15, 16
Pin Description……