CMX602A 查看數據表（PDF） - MX-COM Inc

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CMX602A

Calling Line Identifier/Calling Line Identifier on Call Waiting

MX-COM Inc  

Calling Line Identifier/Calling Line Identifier on Call Waiting 7

CMX602A PRELIMINARY INFORMATION

The Input Signal Amplifier may also be used to allow the CMX602A to operate from an unbalanced signal

source as shown in Figure 4. In this unbalanced signal configuration, the values of R6 and R8 are the same

as used for the balanced input configuration.

C6 R6

A

AMPOUT

R8 IN-

IN+

VSS

-

+

Input Signal

Amplifier

VBIAS

C9

Figure 4: Input Signal Amplifier, unbalanced input configuration

1000

900

800

700

600

R8

500

400

300

200

R9

100

0

3

3.5

4

4.5

5

5.5

VDD (Volts)

Figure 5: Input Signal Amplifier, Optimum Values of R8 and R9 vs. VDD

4.3 Bandpass Filter

The Bandpass Filter is used to attenuate out of band noise and interfering signals from reaching the FSK

Demodulator, Tone Alert Detector and Level Detector circuits. The characteristics of this filter differ between

FSK and Tone Alert modes. Switched Capacitor filter stages clocked at 57.7kHz provide primary filtering. If

the input signal is band limited to below 28.85kHz then external anti-aliasing filtering is not required.

¤1999 MX-COM, Inc

www.mxcom.com Tel: 800 638 5577 336 744 5050 Fax: 336 744 5054

Doc. # 20480169.004

4800 Bethania Station Road, Winston-Salem, NC 27105-1201, USA All trademarks and service marks are held by their respective companies.

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