ADS7817U/2K5G4

Product Overview

Category

The ADS7817U/2K5G4 belongs to the category of analog-to-digital converters (ADCs).

Use

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

Characteristics

• High-resolution: The ADS7817U/2K5G4 offers a resolution of 12 bits, allowing for precise conversion of analog signals.
• Low power consumption: It operates at a low power supply voltage, making it suitable for battery-powered applications.
• Fast conversion rate: With a maximum conversion rate of 200 kilosamples per second (ksps), it can quickly process analog signals.
• Wide input voltage range: The ADC accepts input voltages ranging from 0 to Vref, providing flexibility in signal acquisition.
• Small package size: It comes in a compact package, enabling space-efficient integration into electronic systems.

Package and Quantity

The ADS7817U/2K5G4 is available in a small outline integrated circuit (SOIC) package. It is typically sold in reels containing 2500 units.

Specifications

• Resolution: 12 bits
• Conversion Rate: Up to 200 ksps
• Input Voltage Range: 0 to Vref
• Power Supply Voltage: 2.7V to 5.25V
• Operating Temperature Range: -40°C to +85°C
• Package Type: SOIC
• Package Quantity: 2500 units per reel

Pin Configuration

The ADS7817U/2K5G4 has a total of 8 pins. Here is the detailed pin configuration:

1. VDD: Power supply voltage input
2. REF: Reference voltage input
3. AGND: Analog ground
4. VIN: Analog input voltage
5. CS: Chip select input
6. SCLK: Serial clock input
7. DOUT: Digital output data
8. DGND: Digital ground

Functional Features

• High-resolution conversion: The ADS7817U/2K5G4 provides accurate 12-bit analog-to-digital conversion.
• Serial interface: It utilizes a serial interface for communication with microcontrollers or other digital devices.
• Internal reference voltage: The ADC includes an internal reference voltage, simplifying the external circuitry required for operation.
• Low power consumption: With its low power supply voltage and efficient design, it minimizes power consumption in electronic systems.

Advantages and Disadvantages

Advantages

• High resolution enables precise measurement of analog signals.
• Compact package size allows for space-efficient integration.
• Wide input voltage range provides flexibility in signal acquisition.
• Low power consumption makes it suitable for battery-powered applications.

Disadvantages

• Limited maximum conversion rate compared to some other ADCs.
• Lack of built-in features for signal conditioning or filtering.

Working Principles

The ADS7817U/2K5G4 operates based on the successive approximation register (SAR) architecture. It samples the analog input voltage, performs a series of comparisons, and generates a digital representation of the input signal. The internal circuitry ensures accurate conversion by utilizing a reference voltage and precise timing.

Detailed Application Field Plans

The ADS7817U/2K5G4 finds applications in various fields, including:

1. Industrial automation: It can be used for monitoring and controlling analog signals in industrial processes.
2. Medical devices: The ADC is suitable for medical instruments that require accurate conversion of physiological signals.
3. Data acquisition systems: It can be integrated into data acquisition systems for converting analog sensor outputs into digital data.
4. Communication equipment: The ADC plays a role in signal processing and modulation/demodulation in communication devices.

Detailed and Complete Alternative Models

1. ADS7816: Similar to the ADS7817U/2K5G4 but with a lower resolution of 10 bits.
2. ADS7818: A higher-resolution alternative with 16-bit conversion capability.
3. ADS7822: Offers similar features but operates at a higher maximum conversion rate of 500 ksps.

These alternative models provide options with varying resolutions and conversion rates to suit different application requirements.

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