XR2211 View Datasheet(PDF) - Exar Corporation

Part Name

Description

MFG CO.

XR2211

FSK Demodulator Tone Decoder

Exar Corporation 

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XR-2211

Input

Signal

2

0.1µF

VCC

Loop 11

Phase

Detect

C1

2.7nF

5%

VCO

12

14

13

CO

27nF 5%

RF 178K

5%

1nF

R1

35.2K

1% 0.1µF

R0

20K

1%

VCO

Fine

Rx Tune

20K

RB

8 1.8m 5%

7

1C0F%

FSK

Comp.

10

Internal

Reference

RL

5.1K

5%

Data

Output

Quad

Phase

Detect

6

+

LDOQ

LDOQN

Lock 5

Detect

Comp.

Figure 10. Circuit Connection for FSK Decoding of Caller Identification Signals

(Bell 202 Format)

Input

Signal

2

0.1µF

Loop 11

Phase

Detect

C1

12

VCO

14

13

C0

RB

RF

8

CF

R1

10

0.1µF

R0

7

+

FSK

Comp.

Internal

Reference

Rx

VCC

RL

5.1k

Quad

Phase

Detect

Between 400K and 600K

3

RD

CD

6 LDOQ

Lock 5 LDOQN

Detect

Comp.

Rev. 3.01

Figure 11. External Connectors for FSK Demodulation with Carrier

Detect Capability

14

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