MCP4821T-E/P MICROCHIP [Microchip Technology], MCP4821T-E/P Datasheet

MCP4821T-E/P

Manufacturer Part Number

MCP4821T-E/P

Description

Manufacturer

MICROCHIP [Microchip Technology]

Datasheet

1.MCP4821T-EP.pdf (36 pages)

Current page: 1 of 36
Download datasheet (2Mb)

Features

• 12-Bit Resolution

• ±0.2 LSb DNL (typ.)

• ±2 LSb INL (typ.)

• Single or Dual Channel

• Rail-to-Rail Output

• SPI™ Interface with 20 MHz Clock Support

• Simultaneous Latching of the Dual DACs

• Fast Settling Time of 4.5 µs

• Selectable Unity or 2x Gain Output

• 2.048V Internal Band Gap Voltage Reference

• 50 ppm/°C V

• 2.7V to 5.5V Single-Supply Operation

• Extended Temperature Range: -40°C to +125°C

Applications

• Set Point or Offset Trimming

• Sensor Calibration

• Precision Selectable Voltage Reference

• Portable Instrumentation (Battery-Powered)

• Calibration of Optical Communication Devices

Block Diagram

with LDAC pin

12-Bit DACs with Internal V

Logic

Gain

REF

OUTA

DAC

String

Input

Temperature Coefficient

Interface Logic

Op Amps

SDI

Output

SHDN

Output

Logic

DAC

String

DAC

Input

SCK

OUTB

LDAC

Power-on

2.048V

Logic

Reset

Gain

REF

MCP4821/MCP4822

REF

Description

The Microchip Technology Inc. MCP482X devices are

2.7V–5.5V, low-power, low DNL, 12-bit Digital-to-Analog

Converters (DACs) with internal band gap voltage

reference, optional 2x-buffered output and Serial

Peripheral Interface (SPI™).

The MCP482X family of DACs provide high accuracy

and low noise performance for industrial applications

where calibration or compensation of signals (such as

temperature, pressure and humidity) are required.

The MCP482X devices are available in the extended

temperature range and PDIP, SOIC and MSOP

packages.

The MCP482X devices utilize a resistive string

architecture, with its inherent advantages of low DNL

error, low ratio metric temperature coefficient and fast

settling time. These devices are specified over the

extended temperature range. The MCP482X family

includes double-buffered registers, allowing simulta-

neous updates using the LDAC pin. These devices also

incorporate a Power-On Reset (POR) circuit to ensure

reliable power-up.

Package Types

and SPI™ Interface

SCK

8-Pin PDIP, SOIC, MSOP

SCK

SDI

SHDN

LDAC

OUTA

OUTB

DS21953A-page 1

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