AS3940U-3.3, AS3955SB, AS3977 Selling Leads, Datasheet
MFG:ALPHA D/C:99
AS3940U-3.3, AS3955SB, AS3977 Datasheet download
Part Number: AS3940U-3.3
MFG: ALPHA
Package Cooled:
D/C: 99
AS3940U-3.3, AS3955SB, AS3977
- Table of contents:
Info of AS3940U-3.3
Info of AS3955SB
Info of AS3977
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About AS300
PDF/DataSheet Download
Datasheet: AS300
File Size: 69720 KB
Manufacturer: ETC [ETC]
Download : Click here to Download
About AS300
PDF/DataSheet Download
Datasheet: AS300
File Size: 69720 KB
Manufacturer: ETC [ETC]
Download : Click here to Download
About AS300
PDF/DataSheet Download
Datasheet: AS300
File Size: 69720 KB
Manufacturer: ETC [ETC]
Download : Click here to Download
AS3977 General Description
The AS3977 is a low-power fully integrated ETSI, FCC and ARIB compliant FSK transmitter capable of operating at any ISM frequency in the range of 300 to 928 MHz. It is based on a sigma-delta controlled fractional-N synthesiser phase locked loop with fully integrated voltage controlled oscillator. The power amplifier output is programmable and can deliver output power ranging from 20dBm up to +10dBm. An on-chip low drop-out regulator is available in case an accurate output power independent of voltage supply variation is required.
The output signal can be shaped using a programmable Gaussian filter to minimise the occupied bandwidth and adjacent channel power. The maximum data rate can be up to 100 kb/s depending on the required filtering.
The FSK frequency deviation is programmable up to a maximum of 64kHz.
The crystal oscillator can handle a wide range of frequencies. For narrow-band applications a temperature sensor with digital read-out is included that allows compensation of the crystal frequency drift due to temperature variation.
The AS3977 is connected to an external microcontroller via a bi-directional digital interface. The device operates at very low current consumption with a power supply range from 2.0V to 3.6V and can be powered down when not in use.
The device is fabricated in austriamicroystems advanced 0.35um SiGe-BiCMOS technology.
AS3977 Connection Diagram
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