ADS8885IDGSR

Product Overview

Category: Analog-to-Digital Converter (ADC)

Use: The ADS8885IDGSR is a high-performance, 18-bit ADC designed for precision measurement applications. It provides accurate conversion of analog signals into digital data.

Characteristics: - High resolution: 18 bits - Low noise: Signal-to-Noise Ratio (SNR) of 100 dB - Wide input voltage range: ±10V - Fast conversion rate: Up to 1 MSPS (Mega Samples Per Second) - Low power consumption: 10 mW (typical) - Integrated reference and temperature sensor

Package: The ADS8885IDGSR comes in a small form factor, 16-pin TSSOP (Thin Shrink Small Outline Package), which allows for easy integration into various electronic systems.

Essence: This ADC is designed to provide precise and reliable conversion of analog signals, making it suitable for applications that require high accuracy and low noise.

Packaging/Quantity: The ADS8885IDGSR is typically sold in reels containing 250 units per reel.

Specifications

• Resolution: 18 bits
• Input Voltage Range: ±10V
• Conversion Rate: Up to 1 MSPS
• Power Supply: 2.7V to 5.5V
• Operating Temperature Range: -40°C to +125°C
• Interface: Serial Peripheral Interface (SPI)

Pin Configuration

The ADS8885IDGSR has the following pin configuration:

1. VREFP: Positive Reference Voltage Input
2. VREFN: Negative Reference Voltage Input
3. AGND: Analog Ground
4. VIN: Analog Input Voltage
5. VDD: Power Supply
6. SCLK: Serial Clock Input
7. DIN: Serial Data Input
8. DOUT: Serial Data Output
9. CS: Chip Select Input
10. DRDY: Data Ready Output
11. DGND: Digital Ground
12. CLKSEL: Clock Select Input
13. PD: Power-Down Input
14. SDI: Serial Data Input/Output
15. SDO: Serial Data Output/Input
16. SCLK: Serial Clock Input

Functional Features

1. High Resolution: The 18-bit resolution allows for precise measurement and conversion of analog signals.
2. Low Noise: The ADC offers a high Signal-to-Noise Ratio (SNR) of 100 dB, ensuring accurate data acquisition even in noisy environments.
3. Wide Input Voltage Range: The ±10V input voltage range enables the conversion of a wide variety of analog signals.
4. Fast Conversion Rate: With a maximum conversion rate of 1 MSPS, the ADC can handle rapid signal changes.
5. Integrated Reference and Temperature Sensor: The built-in reference and temperature sensor enhance accuracy and simplify system design.

Advantages and Disadvantages

Advantages: - High resolution and low noise for accurate measurements - Wide input voltage range for versatile applications - Fast conversion rate for capturing dynamic signals - Integrated reference and temperature sensor for improved accuracy - Small form factor for easy integration into electronic systems

Disadvantages: - Higher cost compared to lower-resolution ADCs - Requires external components for proper operation (reference voltage, clock source)

Working Principles

The ADS8885IDGSR operates based on the successive approximation register (SAR) architecture. It samples the analog input voltage and converts it into a digital representation using an internal SAR algorithm. The converted digital data is then output through the serial interface.

Detailed Application Field Plans

The ADS8885IDGSR is suitable for various precision measurement applications, including but not limited to: - Industrial automation - Medical equipment - Test and measurement instruments - Data acquisition systems - Audio signal processing

Detailed and Complete Alternative Models

1. ADS8881IDGSR: 16-bit ADC with similar features and package.
2. ADS8865IDGSR: 14-bit ADC with lower resolution but similar characteristics.
3. ADS8900B: 20-bit ADC with higher resolution and additional features.

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

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