Datasheet > ELM403P

ELM403P

更新时间： 2024-11-23 11:46:03

品牌	Logo	应用领域
ELM		解码器
页数	文件大小	规格书
9页	54K
描述
Rotary Decoder - 2 wire 4x Interface

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ELM403P 数据手册

ELM403

Rotary Decoder - 2 wire 4x Interface

Description

Features

The ELM403 is an 8 pin integrated circuit that is

• Low power CMOS design

• Wide supply range – 2.0 to 5.5 volts

• Complete debouncing of the encoder inputs

• No external filtering needed

• 4x decoding

used to convert the signals from a rotary encoder

into a series of up and down output pulses. The low

power CMOS technology used ensures that only a

very small current is required over the entire 2.0 to

5.5 volt operating range.

There is no need for external filtering or

debounce circuits with the ELM403, as this is all

performed within the integrated circuit. After

debouncing the encoder signals, the ELM403 then

determines the direction of shaft rotation, and

generates the appropriate pulses at the Up or Down

output pins. The duration of these pulses can be

selected for either 0.2 or 2.0 msec.

• Startup delay timer

• High current drive outputs

Connection Diagram

PDIP and SOIC

(top view)

The ELM403 provides 4x decoding of a rotary

encoder signal. If your application requires 2x

decoding, please see the ELM402 (it is identical to

the ELM403 in every respect, except that it provides

2x decoding).

VDD

VSS

Applications

Down

• Digital audio potentiometer controls

• Variable voltage or temperature circuits

• Positioning controls

Pulse

Width

Output

Invert

• Tuning circuits

Block Diagram

VDD

Debounce

Circuit

Direction

Decoding

Output

Logic

VDD

Debounce

Down

Circuit

Rotary

Encoder

Pulse

Width

Output

Invert

ELM403DSA

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