AD790SQ

Product Overview

• Category: Integrated Circuit
• Use: Analog-to-Digital Converter (ADC)
• Characteristics: High-speed, high-resolution ADC with low power consumption
• Package: Small Outline Package (SOP)
• Essence: Converts analog signals into digital data for processing and analysis
• Packaging/Quantity: Available in reels of 250 units

Specifications

• Resolution: 12 bits
• Sampling Rate: 1 Mega-sample per second (MSPS)
• Input Voltage Range: ±5 volts
• Power Supply: +5 volts DC
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The AD790SQ has a total of 20 pins. The pin configuration is as follows:

1. VREF-
2. VREF+
3. AGND
4. VIN-
5. VIN+
6. REFOUT
7. DGND
8. CLK
9. CS
10. SDATA
11. SCLK
12. DOUT
13. PD
14. PDWN
15. VDD
16. VSS
17. VLOGIC
18. VIO
19. NC
20. NC

Functional Features

• High-speed conversion: The AD790SQ can convert analog signals into digital data at a rate of 1 MSPS.
• High resolution: With a 12-bit resolution, it provides accurate representation of the input signal.
• Low power consumption: The ADC operates on a low power supply voltage of +5 volts, making it energy-efficient.
• Wide input voltage range: It can handle input voltages ranging from -5 volts to +5 volts.

Advantages and Disadvantages

Advantages

• High-speed conversion allows for real-time data acquisition.
• High resolution ensures accurate measurement and analysis.
• Low power consumption reduces energy costs.
• Wide input voltage range provides flexibility in signal processing.

Disadvantages

• Limited to a 12-bit resolution, which may not be sufficient for certain applications requiring higher precision.
• Requires an external clock signal for operation.

Working Principles

The AD790SQ utilizes successive approximation register (SAR) architecture to convert analog signals into digital data. It samples the input voltage at a high rate and compares it to a reference voltage. By iteratively adjusting the digital code, it converges towards the closest representation of the analog input.

Application Field Plans

The AD790SQ is commonly used in various applications that require high-speed and high-resolution analog-to-digital conversion. Some potential application fields include:

1. Data acquisition systems
2. Instrumentation and measurement equipment
3. Communication systems
4. Industrial automation
5. Medical devices

Alternative Models

For those seeking alternative options, the following ADC models can be considered:

1. AD7910: 10-bit, 1 MSPS ADC with similar characteristics to the AD790SQ.
2. AD7982: 16-bit, 500 kSPS ADC for applications requiring higher resolution.
3. AD7091R: 12-bit, 250 kSPS ADC with lower power consumption.

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

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