AD7228KR

Product Overview

Category

AD7228KR belongs to the category of digital-to-analog converters (DACs).

Use

It is primarily used for converting digital signals into analog voltages.

Characteristics

• High resolution and accuracy
• Low power consumption
• Wide operating temperature range
• Fast settling time

Package

AD7228KR comes in a 20-pin ceramic dual in-line package (CDIP).

Essence

The essence of AD7228KR lies in its ability to convert digital data into precise analog voltages, making it suitable for various applications.

Packaging/Quantity

AD7228KR is typically packaged in tubes or trays, with a quantity of 25 units per tube/tray.

Specifications

• Resolution: 8 bits
• Number of Channels: 8
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Conversion Rate: 100 kSPS (samples per second)
• DNL (Differential Non-Linearity): ±0.5 LSB (Least Significant Bit)
• INL (Integral Non-Linearity): ±1 LSB

Detailed Pin Configuration

1. VREFH: High reference voltage input
2. VOUTA: Analog output channel A
3. VOUTB: Analog output channel B
4. VOUTC: Analog output channel C
5. VOUTD: Analog output channel D
6. VOUTE: Analog output channel E
7. VOUTF: Analog output channel F
8. VOUTG: Analog output channel G
9. VOUTH: Analog output channel H
10. AGND: Analog ground
11. WR: Write control input
12. CS: Chip select input
13. CLK: Clock input
14. DB0: Data bit 0
15. DB1: Data bit 1
16. DB2: Data bit 2
17. DB3: Data bit 3
18. DB4: Data bit 4
19. DB5: Data bit 5
20. DB6: Data bit 6

Functional Features

• High-resolution digital-to-analog conversion
• Simultaneous update of all channels
• Serial interface for easy integration with microcontrollers
• Low glitch energy for improved accuracy
• Power-down mode for reduced power consumption

Advantages and Disadvantages

Advantages

• High accuracy and resolution
• Wide operating temperature range
• Fast settling time
• Low power consumption

Disadvantages

• Limited number of channels (8)
• Requires an external reference voltage

Working Principles

AD7228KR utilizes a successive approximation register (SAR) architecture to convert digital data into analog voltages. It employs a combination of resistors, switches, and capacitors to generate precise analog outputs corresponding to the input digital values.

Detailed Application Field Plans

AD7228KR finds applications in various fields, including: - Industrial automation - Test and measurement equipment - Audio processing - Instrumentation - Communication systems

Alternative Models

Some alternative models to AD7228KR include: - AD7303: 8-bit DAC with serial interface - AD5628: 12-bit DAC with simultaneous update - AD5668: 16-bit DAC with low power consumption - AD5754: 16-bit DAC with current output

These alternative models offer different resolutions, features, and performance characteristics, allowing users to choose the most suitable option for their specific requirements.

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