CMX641A データシートの表示（PDF） - MX-COM Inc

部品番号

コンポーネント説明

一致するリスト

CMX641A

Dual SPM/Security Detector/Generator

MX-COM Inc  

Dual SPM/Security Detector/Generator

13

13 ENHANCED FEATURES

14

14

15

15

16

16

17

17

18

18

CH2 AMP IN (+)

CH2 AMP IN (-)

CH2 AMP OP

OP SELECT

PRESET LEVEL

TONE ASK

19

19

20

20

21

21

CHIPSELECTN

SERIAL CLOCK

SERIAL DATA

5 of 23

CMX641A Advance Information

I/P This pin selects the device application. When

(logic ‘0’) the CMX641A is in Fixed Bandwidth

Operating state. When (logic ‘1’) it is in

Enhanced Features Operating state.

This pin has an internal pulldown resistor on-chip

so that when unconnected, the default state is

Fixed Bandwidth Operating state.

I/P The positive input to the Channel 2 input

amplifier. See Figure 2 and Figure 3.

I/P The negative input to the Channel 2 input

amplifier. See Figure 2 and Figure 3.

O/P The output of the Channel 2 input amplifier. See

Figure 2 and Figure 3.

I/P A logic input to set the Channel 1 and Channel 2

output format. When high (logic ‘1’), the outputs

are in the Tone Follower mode; when low (logic

‘0’), the outputs are in Packet mode.

This is a dual function pin differing between

Fixed Bandwidth Operating state and Enhanced

Features Operating state.

This input has an internal pullup resistor on chip

so that the default (open circuit) modes are Fixed

Sensitivity (Fixed Bandwidth Operating state)

and No Tone (Enhanced Features Operating

state).

(Fixed Bandwidth Operating state).

A logic input to set the sensitivity mode of the

CMX641A. When high (logic ‘1’), both channels

are in the Fixed Sensitivity mode. The external

components govern the input sensitivity; the

SYSTEM SELECT pin selects 12kHz or 16kHz

operation.

When low logic (logic ‘0’), the system frequency

and sensitivity of both channels are in the

Controlled Sensitivity mode. Device sensitivities

and system selection are via the CHIP

SELECTN/SERIAL DATA/SERIAL CLOCK

inputs.

(Enhanced Features Operating state).

A logic input used to ASK modulate the TONE

OP pin. A logic high corresponds to no tone and

a logic low to tone.

I/P The serial data pins for use in data loading when

I/P using the CMX641A in Controlled Sensitivity

I/P

mode (Fixed Bandwidth Operating state) or in

Enhanced Features Operating state (See Figure

7 and Figure 8). When the device is in Fixed

Sensitivity mode (Fixed Bandwidth Operating

state), these pins should be connected to VSS or

VDD.

ã2001 MX-COM, Inc.

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

Doc. # 20480227.002

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

Share Link: