ADS1254E/2K5G4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Analog-to-Digital Converter (ADC)
• Characteristics: High-resolution, low-power consumption
• Package: 32-pin QFN package
• Essence: Converts analog signals into digital data
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Resolution: 24 bits
• Input Voltage Range: ±Vref
• Sampling Rate: Up to 30 kSPS
• Power Supply: 2.7V to 5.25V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The ADS1254E/2K5G4 has a total of 32 pins. The pin configuration is as follows:

1. AVDD: Analog power supply
2. DVDD: Digital power supply
3. AGND: Analog ground
4. DGND: Digital ground
5. REFOUT: Reference voltage output
6. REFIN1(+): Positive reference input
7. REFIN1(-): Negative reference input
8. REFIN2(+): Positive reference input
9. REFIN2(-): Negative reference input
10. AINP0: Positive analog input channel 0
11. AINN0: Negative analog input channel 0
12. AINP1: Positive analog input channel 1
13. AINN1: Negative analog input channel 1
14. AINP2: Positive analog input channel 2
15. AINN2: Negative analog input channel 2
16. AINP3: Positive analog input channel 3
17. AINN3: Negative analog input channel 3
18. CLK: Clock input
19. DRDY: Data ready output
20. CS: Chip select input
21. DIN: Serial data input
22. DOUT: Serial data output
23. SCLK: Serial clock input
24. PDWN: Power-down mode control input 25-32. NC: No connection

Functional Features

• High-resolution ADC with 24-bit resolution
• Low-power consumption for energy-efficient applications
• Wide input voltage range allows for versatile signal conversion
• Fast sampling rate of up to 30 kSPS enables real-time data acquisition
• Integrated reference voltage output for convenient system integration
• Serial interface for easy communication with microcontrollers

Advantages and Disadvantages

Advantages

• High resolution provides accurate and precise digital conversion
• Low power consumption extends battery life in portable devices
• Wide input voltage range accommodates various analog signals
• Fast sampling rate enables real-time data processing
• Compact package size saves board space in electronic designs

Disadvantages

• Limited number of analog input channels (4 channels)
• Requires external components for voltage reference and filtering
• Higher cost compared to lower-resolution ADCs

Working Principles

The ADS1254E/2K5G4 is an analog-to-digital converter that converts analog signals into digital data. It utilizes a sigma-delta modulation technique to achieve high resolution. The analog input signal is sampled and quantized, and the resulting digital data is transmitted serially to a microcontroller or other digital device.

The device operates by comparing the input signal with a reference voltage and generating a digital code proportional to the difference between the two. This digital code represents the amplitude of the input signal with high precision. The ADS1254E/2K5G4 also incorporates a programmable gain amplifier (PGA) to amplify weak signals before digitization.

Detailed Application Field Plans

The ADS1254E/2K5G4 is widely used in various applications that require high-resolution analog-to-digital conversion. Some of the common application fields include:

1. Industrial Automation: Measurement and control systems, data acquisition
2. Medical Instruments: Patient monitoring, biomedical research
3. Test and Measurement Equipment: Oscilloscopes, spectrum analyzers
4. Energy Management: Smart grid monitoring, power quality analysis
5. Scientific Research: Data acquisition in physics, chemistry, and biology experiments

Detailed and Complete Alternative Models

• ADS1256: 24-bit ADC with 8-channel input and higher sampling rate
• ADS124S08: 24-bit ADC with integrated PGA and SPI interface
• ADS1115: 16-bit ADC with I2C interface and programmable gain

These alternative models offer different features and specifications to suit specific application requirements.

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