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Block diagram, Synthesizer – Rainbow Electronics AT86RF211 User Manual

Page 5

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5

AT86RF211

1942C–WIRE–06/02

Block Diagram

Figure 4. AT86RF211 Block Diagram

SYNTHESIZER

FREQUENCY

CTRL

CONTROL LOGIC

WAKE-UP

DATA SLICER

BANDWIDTH CTRL

RSSI LEVEL

FM DISCRIMINATOR

OPTIONAL

FILTER

IF2

FILTER

455 kHz

PWR
CTRL

TX

PA

Optional

These are the only blocks that depend
on the selected ISM band (433, 868
or 915 MHz): dual band applications
can be done by only switching them.
Synthesizer, loop filter, IF filter(s),
power supply decoupling are identical.

GAIN MIN/MAX

Rx

AERIAL

MATCHING

CIRCUIT

DATA

MSG

DATA

CLK

SDATA

WAKE-UP

SLE

SCK

IF2

AMP

IF1

AMP

MIXER2

IF1

FILTER

10.7 MHz

or

21.4 MHz

LNA

MIXER1

TX/RX

RF

FILTER

RPOWER

OSC

10.245 MHz

or

20.945 MHz

See also other documents in the category Rainbow Electronics Wireless Headsets: