AD7891ASZ-1

Overview

Product Category

AD7891ASZ-1 belongs to the category of analog-to-digital converters (ADCs).

Use

This ADC is commonly used in various applications that require accurate conversion of analog signals into digital data.

Characteristics

• High precision: The AD7891ASZ-1 offers exceptional accuracy in converting analog signals, ensuring reliable and precise digital output.
• Fast conversion rate: With its high-speed conversion capability, this ADC can efficiently process analog signals and provide rapid digital results.
• Low power consumption: The AD7891ASZ-1 is designed to operate with minimal power consumption, making it suitable for battery-powered devices.
• Wide input voltage range: This ADC can handle a wide range of input voltages, allowing it to accommodate diverse signal sources.
• Small package size: The AD7891ASZ-1 comes in a compact package, enabling space-efficient integration into various electronic systems.

Package and Quantity

The AD7891ASZ-1 is available in a small outline integrated circuit (SOIC) package. It is typically sold in reels or tubes containing a specified quantity per package.

Specifications

• Resolution: 12 bits
• Input Voltage Range: ±10V
• Conversion Rate: 100 kSPS (samples per second)
• Power Supply: +5V
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The AD7891ASZ-1 features a 16-pin SOIC package with the following pin configuration:

Pin Number | Pin Name | Description -----------|----------|------------- 1 | VDD | Power supply positive terminal 2 | VREF | Reference voltage input 3 | AGND | Analog ground 4 | VIN(+) | Positive analog input 5 | VIN(-) | Negative analog input 6 | DGND | Digital ground 7 | CS | Chip select input 8 | SCLK | Serial clock input 9 | SDI | Serial data input 10 | SDO | Serial data output 11 | RD | Read control input 12 | WR | Write control input 13 | INTR | Interrupt output 14 | ALARM | Alarm output 15 | REFOUT | Reference voltage output 16 | VSS | Power supply negative terminal

Functional Features

• High-resolution conversion: The AD7891ASZ-1 provides 12-bit resolution, ensuring accurate and detailed digital representation of analog signals.
• Serial interface: This ADC utilizes a serial interface for communication, enabling easy integration with microcontrollers and other digital systems.
• Internal reference voltage: The AD7891ASZ-1 incorporates an internal reference voltage, eliminating the need for an external reference source.
• Programmable gain amplifier (PGA): With its built-in PGA, this ADC allows for amplification of weak analog signals, enhancing sensitivity and versatility.

Advantages and Disadvantages

Advantages

• High precision and accuracy
• Fast conversion rate
• Low power consumption
• Wide input voltage range
• Compact package size

Disadvantages

• Limited resolution compared to higher-end ADCs
• Requires external components for certain functionalities

Working Principles

The AD7891ASZ-1 operates based on the successive approximation register (SAR) architecture. It converts analog signals into digital data by comparing the input voltage against a reference voltage and iteratively approximating the digital output until the desired resolution is achieved.

Detailed Application Field Plans

The AD7891ASZ-1 finds applications in various fields, including but not limited to: - Industrial automation - Medical equipment - Test and measurement instruments - Data acquisition systems - Communication devices

Detailed and Complete Alternative Models

• AD7891BSZ-1: Similar to the AD7891ASZ-1, but with extended temperature range (-40°C to +125°C).
• AD7891YSZ-1: Higher-resolution version (16 bits) of the AD7891ASZ-1.
• AD7891AZ-1: Lower-resolution version (10 bits) of the AD7891ASZ-1.

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

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