ASCELL3912 データシートの表示（PDF） - austriamicrosystems AG

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ASCELL3912

ISM 868 MHz, 433 MHz and 315 MHz FSK Receiver Cell

austriamicrosystems AG 

ISM 868 MHz, 433 MHz and 315 MHz FSK Receiver Cell – Preliminary Data Sheet

ASCell3912

Pin Name

17 D_EN

18 D_CLK

19 DATA

20 DVDD

Type

O

I

I/O

P

Description

Enable data bus

Clock for serial interface

Data Input / Output for serial interface

Digital positive supply

4 Application Schematic

Austria Mikro Systeme International AG

f =868.300 MHz

RF

IRF

RF+

Pre Filter

RF-

Implementation

Example

RFGND

RF_LO = f

RF

LC+

PRA

Optional

DC to 100 kHz

LC-

QDC 2*BBF

GMC

2*BBA

2*ACC

2*CMP

DEM

Data

Preamp.

Quadrature

Down Converter

0° 90°

+/-45°

Baseband

Filters

Baseband

Amplifiers

Switchable

AC-Coupling

Compe-

rators

LNA

DC-0

Bandwidth

Clock

Sync

Demodulator,

Synchronizer

VCO LPF

Local

Oscillator

AVDD

Loop-filter

AGND

AVDD

DIV PHD

f/64

Divider Phase Detector

XTAL+

AFC

XTO

XTAL

Oscillator

XTAL-

G. Schultes, ISM868_RX

Revision: 0, 99 07 16

Protocol

Decoder

Receiver

Timing

TEST

AGND

D_EN

D_CLK

DATA

RE_INT

WAKEUP

µC_CLK

DVCC

DVCC

DGND

DGND

Figure 6: Basic application schematic of the ASCell3912.

Rev. A, February 2000

Page 12 of 14

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