ADS7835E/2K5

Product Overview

• Category: Analog-to-Digital Converter (ADC)
• Use: Converts analog signals into digital data
• Characteristics: High resolution, low power consumption
• Package: Integrated circuit (IC)
• Essence: Provides accurate and reliable conversion of analog signals
• Packaging/Quantity: Typically sold in reels or tubes containing multiple units

Specifications

• Resolution: 12 bits
• Input Voltage Range: 0V to Vref
• Sampling Rate: Up to 200 kilosamples per second (ksps)
• Power Supply: 2.7V to 5.25V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The ADS7835E/2K5 has a total of 16 pins, which are assigned specific functions as follows:

1. VDD: Power supply voltage input
2. REF: Reference voltage input
3. AGND: Analog ground
4. VREF: Buffered reference voltage output
5. AIN0: Analog input channel 0
6. AIN1: Analog input channel 1
7. AIN2: Analog input channel 2
8. AIN3: Analog input channel 3
9. AIN4: Analog input channel 4
10. AIN5: Analog input channel 5
11. AIN6: Analog input channel 6
12. AIN7: Analog input channel 7
13. CS: Chip select input
14. SCLK: Serial clock input
15. DOUT: Serial data output
16. DGND: Digital ground

Functional Features

• High-resolution conversion: The 12-bit resolution ensures accurate representation of analog signals.
• Low power consumption: The ADC operates with low power requirements, making it suitable for battery-powered devices.
• Serial interface: The ADS7835E/2K5 utilizes a serial interface for communication with microcontrollers or other digital devices.
• Multiple input channels: It provides eight analog input channels, allowing for the conversion of multiple signals simultaneously.

Advantages and Disadvantages

Advantages: - High resolution ensures precise measurement of analog signals. - Low power consumption extends battery life in portable applications. - Serial interface simplifies integration with digital systems. - Multiple input channels enable versatile signal conversion.

Disadvantages: - Limited to 12-bit resolution, which may not be sufficient for certain high-precision applications. - Requires an external reference voltage source for accurate conversions.

Working Principles

The ADS7835E/2K5 operates by sampling the analog input voltage and converting it into a digital representation using its internal ADC circuitry. The analog input voltage is compared to a reference voltage, and the resulting digital value is transmitted through the serial interface. The device's internal circuitry ensures accurate and reliable conversion of the analog signal.

Detailed Application Field Plans

The ADS7835E/2K5 finds application in various fields, including:

1. Industrial automation: Used for monitoring and control of analog signals in industrial processes.
2. Medical devices: Enables precise measurement of physiological signals for diagnostic purposes.
3. Data acquisition systems: Converts analog sensor outputs into digital data for further processing and analysis.
4. Instrumentation: Provides accurate measurement of physical quantities such as temperature, pressure, and voltage.
5. Audio equipment: Used in audio interfaces and recording devices for analog-to-digital conversion of audio signals.

Alternative Models

1. ADS7835: Similar to ADS7835E/2K5 but without the extended temperature range.
2. ADS7835E/2K5R: RoHS-compliant version of ADS7835E/2K5.
3. ADS7835E/2K5G4: Grade 4 automotive-qualified version of ADS7835E/2K5.

These alternative models offer similar functionality but may have slight differences in specifications or package options.

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