MCP4014-502E/CH View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

MCP4014-502E/CH

Low-Cost 64-Step Volatile Digital POT

Microchip Technology 

MCP4011/2/3/4

3.0 PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1: PIN FUNCTION TABLE

Pin Number

MCP4011

(SOIC-8)

MCP4012

MCP4013

(SOT-23-6)

MCP4014

(SOT-23-5)

Symbol

1

1

1

VDD

2

2

2

VSS

3

6

—

A

4

5

5

W

5

4

4

CS

6

—

—

B

7

—

—

NC

8

3

3

U/D

Legend: TTL = TTL compatible input

I = Input

P = Power

Pin

Type

Buffer

Type

Function

P

— Positive Power Supply Input

P

— Ground

I/O

A Potentiometer Terminal A

I/O

A Potentiometer Wiper Terminal

I

TTL Chip Select Input

I/O

A Potentiometer Terminal B

—

— No Connection

I

TTL Increment/Decrement Input

A = Analog input

O = Output

3.1 Positive Power Supply Input (VDD)

The VDD pin is the device’s positive power supply input.

The input power supply is relative to VSS and can range

from 1.8V to 5.5V. A decoupling capacitor on VDD (to

VSS) is recommended to achieve maximum

performance.

3.2 Ground (VSS)

The VSS pin is the device ground reference.

3.3 Potentiometer Terminal A

The terminal A pin is connected to the internal potenti-

ometer’s terminal A (available on some devices). The

potentiometer’s terminal A is the fixed connection to the

0x3F terminal of the digital potentiometer.

The terminal A pin is available on the MCP4011,

MCP4012 and MCP4013 devices. The terminal A pin

does not have a polarity relative to the terminal W or B

pins. The terminal A pin can support both positive and

negative current. The voltage on terminal A must be

between VSS and VDD.

The terminal A pin is not available on the MCP4014.

The potentiometer’s terminal A is internally floating.

3.4 Potentiometer Wiper (W) Terminal

The terminal W pin is connected to the internal potenti-

ometer’s terminal W (the wiper). The wiper terminal is

the adjustable terminal of the digital potentiometer. The

terminal W pin does not have a polarity relative to

terminals A or B pins. The terminal W pin can support

both positive and negative current. The voltage on

terminal W must be between VSS and VDD.

3.5 Potentiometer Terminal B

The terminal B pin is connected to the internal potenti-

ometer’s terminal B (available on some devices). The

potentiometer’s terminal B is the fixed connection to the

0x00 terminal of the digital potentiometer.

The terminal B pin is available on the MCP4011 device.

The terminal B pin does not have a polarity relative to

the terminal W or A pins. The terminal B pin can

support both positive and negative current. The voltage

on terminal B must be between VSS and VDD.

The terminal B pin is not available on the MCP4012,

MCP4013 and MCP4014 devices.

For the MCP4013 and MCP4014, the internal potenti-

ometer’s terminal B is internally connected to VSS.

Terminal B does not have a polarity relative to

terminals W or A. Terminal B can support both positive

and negative current.

For the MCP4012, terminal B is internally floating.

© 2006 Microchip Technology Inc.

DS21978C-page 25

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