器件名称: U2793B
功能描述: 300 MHZ QUADRATURE MODULATOR
文件大小: 255.55KB 共12页
简 介:Features
Supply Voltage: 5 V Low Power Consumption: 15 mA/5 V Output Level and Spurious Products Adjustable (Optional) Excellent 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: -15 dBm 50- Single-ended LO and RF Port LO Frequency Range of 30 MHz to 300 MHz
Benefits
Low Current Consumption Few External Components Result in Cost and Board Space Saving Adjustment Free Hence Saves Time
300-MHz Quadrature Modulator U2793B
Electrostatic sensitive device. Observe precautions for handling.
Description
The IC U2793B is a 300-MHz quadrature modulator that uses Atmel‘s advanced UHF process. It features low current consumption, single-ended RF ports and adjustmentfree application, which makes the device suitable for all digital radio systems, e.g., GSM, PCN, JDC and WLAN. As an option, output level and spurious products are adjustable at pins 19 and 20. In conjunction with Atmel’s U2795B mixer, an up-converter up to 2 GHz can be realized. Figure 1. Block Diagram
SPD BBAi BBAi 10 9 8 PU 1
LOi LOi
14 Duty cycle 15 regenerator Frequency doubler 0° 90° 90° control loop Σ
Power 6,7 VS up VRef 13 19 LP2 LP1 20 RFo 4
BBBi BBBi
11 12 3,16,17,18 GND
2 5
ACGND ACGND
Rev. 4651C–CELL–07/04
Pin Configuration
Figure 2. Pinning SSO20
PU ACGND GND RFO ACGND VS VS SPU BBAI BBAI 1 2 3 4 5 U2793B 6 7 8 9 10 15 14 13 12 11 LOI LOI VREF BBBI BBBI 20 19 18 17 16 LP1 L……
