AD7228KR
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Analog Devices Inc. AD7228KR

Manufacturer No:
AD7228KR
Manufacturer:
Analog Devices Inc.
Package:
Tube
Description:
IC DAC 8BIT V-OUT 24SOIC
Delivery:
Payment:
iso14001
iso45001
iso9001
iso13485

Product Introduction

Overview

The AD7228KR, produced by Analog Devices Inc., is a highly integrated digital-to-analog converter (DAC) chip. It contains eight 8-bit voltage mode DACs, each with output buffer amplifiers and interface logic, all on a single monolithic chip. This device is fabricated using an all ion implanted, high speed, linear-compatible CMOS (LC2MOS) process, which allows for the integration of high speed digital logic and precision analog circuits. The AD7228KR is designed to operate with either single or dual supplies, with specified performance guaranteed for input reference voltages from 2 V to 10 V. It features a common 8-bit data bus with individual DAC latches, making it versatile for interfacing with microprocessors.

Key Specifications

Parameter Specification
Number of DACs Eight 8-bit DACs
Output Type Voltage mode
Reference Voltage Range 2 V to 10 V (dual supplies), 10 V (single supply)
Output Buffer Amplifier Capability 10 V across a 2 kΩ load
Interface Compatibility TTL/CMOS-compatible input port (5 V)
Address Inputs A0, A1, A2
Package Options 24-Lead PDIP, CERDIP, SOIC; 28-Lead PLCC
Operating Temperature Typically -40°C to +85°C

Key Features

  • Eight 8-bit DACs with output buffer amplifiers on a single chip, reducing board space and increasing reliability.
  • No external trims required to achieve full specified performance.
  • Operates with single or dual supplies, enhancing flexibility in system design.
  • Common 8-bit data bus with individual DAC latches, providing a versatile control architecture compatible with most 8-bit microprocessors.
  • Highly stable, thin film, R-2R ladder and high speed NMOS switches in each DAC.
  • Compact packaging options including 24-Lead PDIP, CERDIP, SOIC, and 28-Lead PLCC.

Applications

  • Digital Potentiometer Emulation: DACs can emulate digital potentiometers, providing digitally controlled variable resistances in circuits.
  • Video Processing: Converts digital video signals into analog signals for display and transmission.
  • Test and Measurement: Used in various test and measurement equipment where digital-to-analog conversion is necessary.

Q & A

  1. What is the AD7228KR?

    The AD7228KR is an octal 8-bit digital-to-analog converter (DAC) chip produced by Analog Devices Inc.

  2. How many DACs does the AD7228KR contain?

    The AD7228KR contains eight 8-bit DACs.

  3. What is the reference voltage range for the AD7228KR?

    The reference voltage range is from 2 V to 10 V for dual supplies and 10 V for single supply operation.

  4. What types of packages are available for the AD7228KR?

    The device is available in 24-Lead PDIP, CERDIP, SOIC, and 28-Lead PLCC packages.

  5. Is the AD7228KR compatible with microprocessors?

    Yes, it is compatible with most 8-bit microprocessors due to its TTL/CMOS-compatible input port and speed-compatible control logic.

  6. What is the output capability of each DAC's buffer amplifier?

    Each output buffer amplifier can develop 10 V across a 2 kΩ load.

  7. Does the AD7228KR require external trims?

    No, external trims are not required to achieve the full specified performance.

  8. What are some common applications of the AD7228KR?

    Common applications include digital potentiometer emulation, video processing, and test and measurement equipment.

  9. What is the fabrication process of the AD7228KR?

    The device is fabricated using an all ion implanted, high speed, linear-compatible CMOS (LC2MOS) process.

  10. What is the typical operating temperature range of the AD7228KR?

    The typical operating temperature range is -40°C to +85°C.

Product Attributes

Number of Bits:8
Number of D/A Converters:8
Settling Time:5µs, 7µs
Output Type:Voltage - Buffered
Differential Output:No
Data Interface:Parallel
Reference Type:External
Voltage - Supply, Analog:10.8V ~ 16.5V, -5V
Voltage - Supply, Digital:13.5V ~ 16.5V
INL/DNL (LSB):±1 (Max), ±1 (Max)
Architecture:R-2R
Operating Temperature:-40°C ~ 85°C
Package / Case:24-SOIC (0.295", 7.50mm Width)
Supplier Device Package:24-SOIC
Mounting Type:Surface Mount
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Similar Products

Part Number AD7228KR AD7228KRZ AD7225KR AD7226KR AD7228KN AD7228KP
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Product Status Obsolete Active Obsolete Obsolete Obsolete Obsolete
Number of Bits 8 8 8 8 8 8
Number of D/A Converters 8 8 4 4 8 8
Settling Time 5µs, 7µs 5µs, 7µs 4µs 4µs 5µs, 7µs 5µs, 7µs
Output Type Voltage - Buffered Voltage - Buffered Voltage - Buffered Voltage - Buffered Voltage - Buffered Voltage - Buffered
Differential Output No No No No No No
Data Interface Parallel Parallel Parallel Parallel Parallel Parallel
Reference Type External External External External External External
Voltage - Supply, Analog 10.8V ~ 16.5V, -5V 10.8V ~ 16.5V, -5V 11.4V ~ 16.5V, -5V 11.4V ~ 16.5V, -5V 10.8V ~ 16.5V, -5V 10.8V ~ 16.5V, -5V
Voltage - Supply, Digital 13.5V ~ 16.5V 13.5V ~ 16.5V 14.25V ~ 15.75V 14.25V ~ 15.75V 13.5V ~ 16.5V 13.5V ~ 16.5V
INL/DNL (LSB) ±1 (Max), ±1 (Max) ±1 (Max), ±1 (Max) ±1 (Max), ±1 (Max) ±0.5 (Max), ±1 (Max) ±1 (Max), ±1 (Max) ± 1 (Max), 1 (Max)
Architecture R-2R R-2R R-2R R-2R R-2R R-2R
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Package / Case 24-SOIC (0.295", 7.50mm Width) 24-SOIC (0.295", 7.50mm Width) 24-SOIC (0.295", 7.50mm Width) 20-SOIC (0.295", 7.50mm Width) 24-DIP (0.300", 7.62mm) 28-LCC (J-Lead)
Supplier Device Package 24-SOIC 24-SOIC 24-SOIC 20-SOIC 24-PDIP 28-PLCC (11.51x11.51)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Through Hole Surface Mount

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