XR2211ACDTR-F View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR2211ACDTR-F

FSK Demodulator/ Tone Decoder

Exar Corporation 

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XR-2211A

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ φ Det

Loop

Filter

Data

Filter

FSK

Output

FSK

Comp

ÎÎÎÎÎÎ Input φ ÎÎÎÎVCOÎÎ

Preamp

ÎÎÎÎÎÎφφDeÎÎÎt ÎÎÎÎÎÎÎÎÎ

Lock Detect

Filter

ÎÎ Lock Detect

ÎÎÎÎÎ Outputs

Lock Detect

Comp

Figure 2. Functional Block Diagram of a Tone and FSK Decoding System Using

XR-2211A

Input

Signal

2

0.1mF

VCC

Loop

11

Phase

RF

Detect

C1

14

Quad

Phase

Detect

VCO 12

13

C0

3

R1

0.1mF

R0

RD

CD

8

CF

10

RB

Rl

7

FSK

Comp.

Internal

Reference

6

Lock 5

Detect

Comp.

LDOQ

LDOQN

Rev. 1.04

Figure 3. Generalized Circuit Connection for

FSK and Tone Detection

7

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