ADS7834EB/250

Product Overview

Category

The ADS7834EB/250 belongs to the category of analog-to-digital converters (ADCs).

Use

This product is used to convert analog signals into digital data for processing and analysis in various electronic systems.

Characteristics

• High-resolution: The ADS7834EB/250 offers a resolution of 16 bits, ensuring accurate conversion of analog signals.
• Low power consumption: It operates at low power levels, making it suitable for battery-powered devices.
• Wide input voltage range: The ADC can handle input voltages ranging from 0V to Vref, providing flexibility in signal acquisition.
• Multiple channels: It features four input channels, allowing simultaneous conversion of multiple analog signals.
• Fast conversion rate: With a maximum sampling rate of 100 kilosamples per second (ksps), it enables real-time data acquisition.

Package and Quantity

The ADS7834EB/250 is available in an SOIC-16 package. Each package contains one unit of the ADC.

Specifications

• Resolution: 16 bits
• Input Voltage Range: 0V to Vref
• Sampling Rate: Up to 100 ksps
• Number of Channels: 4
• Power Supply: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The ADS7834EB/250 has a total of 16 pins, which are assigned as follows:

1. VDD: Power supply positive terminal
2. VREF: Reference voltage input
3. AGND: Analog ground
4. VIN1: Analog input channel 1
5. VIN2: Analog input channel 2
6. VIN3: Analog input channel 3
7. VIN4: Analog input channel 4
8. CS: Chip select input
9. SCLK: Serial clock input
10. DOUT: Digital output
11. DIN: Serial data input
12. RDY: Ready output
13. PD: Power-down input
14. DGND: Digital ground
15. NC: No connection
16. VSS: Power supply negative terminal

Functional Features

• High accuracy: The ADS7834EB/250 provides precise conversion of analog signals, ensuring reliable data acquisition.
• Serial interface: It utilizes a serial interface for communication with microcontrollers or other digital devices.
• Power-down mode: The ADC can be put into a low-power standby mode when not in use, conserving energy.
• Ready output: The RDY pin indicates when the conversion is complete, allowing synchronization with other system components.

Advantages and Disadvantages

Advantages

• High resolution enables accurate signal conversion.
• Low power consumption makes it suitable for portable and battery-powered applications.
• Multiple channels allow simultaneous conversion of multiple signals.
• Wide input voltage range provides flexibility in signal acquisition.

Disadvantages

• Limited to 16-bit resolution, which may not be sufficient for certain high-precision applications.
• Requires an external reference voltage source for accurate conversions.

Working Principles

The ADS7834EB/250 operates based on the successive approximation register (SAR) architecture. It samples the analog input voltage and compares it to a reference voltage. By iteratively adjusting the digital code, it converges to the closest digital representation of the analog signal.

Application Field Plans

The ADS7834EB/250 finds applications in various fields, including: 1. Industrial automation: Used for monitoring and control systems in manufacturing processes. 2. Medical devices: Enables accurate measurement and analysis of physiological signals. 3. Data acquisition systems: Converts analog sensor outputs into digital data for further processing. 4. Instrumentation: Provides precise measurement capabilities in scientific and engineering instruments.

Alternative Models

1. ADS7832EB/250: Similar to ADS7834EB/250 but with two input channels instead of four.
2. ADS7835EB/250: Offers higher resolution (18 bits) for enhanced accuracy.
3. ADS7844EB/250: Provides eight input channels for increased flexibility in signal acquisition.

In conclusion, the ADS7834EB/250 is a 16-bit analog-to-digital converter with multiple channels, high resolution, and low power consumption. It finds applications in various fields, offering accurate signal conversion and reliable data acquisition.