Overview
The AD7863ARZ-2REEL7, produced by Analog Devices, Inc., is a high-performance 14-bit dual analog-to-digital converter (ADC) designed for simultaneous sampling and conversion of two analog input channels. This IC is part of the AD7863 series and is housed in a 28-lead SOIC package. It operates from a single 5V supply and is suitable for a wide range of applications requiring precise and simultaneous analog-to-digital conversion.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ADI (Analog Devices, Inc.) |
| Description | IC ADC 14BIT DUAL 2CHAN 28SOIC |
| Voltage - Supply, Digital | 5V |
| Voltage - Supply, Analog | 5V |
| Supplier Device Package | 28-SOIC |
| Sampling Rate (Per Second) | 175k |
| Reference Type | External, Internal |
| Ratio - S/H:ADC | 1:1 |
| Packaging | Tape & Reel (TR) |
| Package / Case | 28-SOIC (0.295", 7.50mm Width) |
| Operating Temperature | -40°C ~ 85°C |
| Number of Inputs | 4 |
| Number of Bits | 14 |
| Number of A/D Converters | 2 |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| Lead Free Status / RoHS Status | Lead free / RoHS Compliant |
| Input Type | Single Ended |
| Data Interface | Parallel |
| Configuration | MUX-S/H-ADC |
| Architecture | SAR (Successive Approximation Register) |
Key Features
- Simultaneous Sampling: The AD7863 allows for simultaneous sampling and conversion of two analog input channels, preserving the relative phase information of the signals.
- High-Speed Conversion: The ADC operates at a sampling rate of 175 kSPS and provides conversion results 5.2 μs after initiating conversion.
- Low Power Consumption: The device consumes 70 mW typical and features an automatic power-down mode, making it ideal for battery-powered or portable applications.
- High-Speed Parallel Interface: Easy connection to microprocessors, microcontrollers, and digital signal processors via a high-speed parallel interface.
- Overvoltage Protection: The analog inputs are protected against overvoltage, allowing input voltages up to ±17 V without causing damage.
- Flexible Input Range: The ADC accepts analog input ranges of 0 V to 2.5 V, ±2.5 V, and ±10 V, depending on the specific model variant.
Applications
- Industrial Automation: Used in control systems and data acquisition for precise measurement and control.
- Medical Devices: Suitable for medical equipment requiring high accuracy and simultaneous sampling of multiple channels.
- Aerospace and Defense: Employed in various military and aerospace applications where high reliability and precision are critical.
- Portable and Battery-Powered Devices: Ideal due to its low power consumption and automatic power-down mode.
- Test and Measurement Equipment: Used in oscilloscopes, multimeters, and other test equipment requiring high-speed and accurate analog-to-digital conversion.
Q & A
- What is the sampling rate of the AD7863ARZ-2REEL7?
The sampling rate of the AD7863ARZ-2REEL7 is 175 kSPS (kilosamples per second).
- What is the resolution of the AD7863ARZ-2REEL7?
The AD7863ARZ-2REEL7 has a resolution of 14 bits.
- How many analog input channels does the AD7863ARZ-2REEL7 support?
The AD7863ARZ-2REEL7 supports 4 analog input channels, with two channels being sampled and converted simultaneously.
- What is the operating temperature range of the AD7863ARZ-2REEL7?
The operating temperature range of the AD7863ARZ-2REEL7 is -40°C to 85°C.
- Is the AD7863ARZ-2REEL7 RoHS compliant?
Yes, the AD7863ARZ-2REEL7 is lead-free and RoHS compliant.
- What type of data interface does the AD7863ARZ-2REEL7 use?
The AD7863ARZ-2REEL7 uses a parallel data interface.
- What is the power consumption of the AD7863ARZ-2REEL7?
The AD7863ARZ-2REEL7 consumes 70 mW typical.
- Does the AD7863ARZ-2REEL7 have overvoltage protection?
Yes, the AD7863ARZ-2REEL7 has overvoltage protection on its analog inputs, allowing input voltages up to ±17 V without causing damage.
- What is the architecture of the AD7863ARZ-2REEL7?
The AD7863ARZ-2REEL7 uses a Successive Approximation Register (SAR) architecture.
- How is the conversion initiated on the AD7863ARZ-2REEL7?
Conversion is initiated on the AD7863ARZ-2REEL7 by pulsing the CONVST input. On the falling edge of CONVST, both on-chip track-and-holds are simultaneously placed into hold and the conversion sequence is started on both channels.
