Overview
The AD7828BR is a high-speed, 8-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This component is part of the AD7824/AD7828 series, which offers a choice of four or eight multiplexed analog input channels. The AD7828BR specifically features eight analog input channels, making it a cost-effective and space-saving solution for multichannel ADC systems. It operates from a single 5 V supply and includes a built-in track-and-hold function, enabling the digitization of full-scale signals up to 10 kHz on all channels.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Category | Integrated Circuits (ICs) - Data Acquisition - Analog to Digital Converters (ADC) |
| Package | 28-SOIC (0.295", 7.50mm Width) |
| Number of Bits | 8 |
| Sampling Rate (Per Second) | 50k |
| Number of Inputs | 8 |
| Input Type | Single Ended |
| Data Interface | Parallel |
| Configuration | MUX-S/H-ADC |
| Ratio - S/H:ADC | 1:1 |
| Number of A/D Converters | 1 |
| Architecture | Flash |
| Reference Type | External |
| Voltage - Supply, Analog | 5V |
| Voltage - Supply, Digital | 5V |
| Operating Temperature | -40°C ~ 85°C |
Key Features
- High-speed conversion rate of 2.5 µs per channel using a half-flash conversion technique.
- Built-in track-and-hold function capable of digitizing full-scale signals of 10 kHz.
- Eight multiplexed analog input channels, providing a cost-effective and space-saving solution.
- Single 5 V supply with low power dissipation of 40 mW (typical).
- Easy microprocessor interfacing using standard Chip Select (CS) and Read (RD) signals.
- No need to generate a clock signal for the ADC due to the half-flash conversion technique.
- Fully differential reference inputs defining the zero to full-scale input range of the ADC.
- Tight error specification: 1/2 LSB.
Applications
- Multichannel data acquisition systems.
- Industrial control and automation.
- Medical devices requiring multiple analog input channels.
- Aerospace and defense applications where high-speed and low power consumption are critical.
- Automotive systems needing robust and reliable ADCs.
Q & A
- What is the conversion rate of the AD7828BR?
The AD7828BR has a conversion rate of 2.5 µs per channel.
- How many analog input channels does the AD7828BR have?
The AD7828BR features eight multiplexed analog input channels.
- What is the operating voltage of the AD7828BR?
The AD7828BR operates from a single 5 V supply for both analog and digital sections.
- What is the operating temperature range of the AD7828BR?
The operating temperature range is -40°C to 85°C.
- Does the AD7828BR require an external clock signal?
No, the AD7828BR does not require an external clock signal due to its half-flash conversion technique.
- How does the AD7828BR interface with microprocessors?
The AD7828BR interfaces easily with microprocessors using standard Chip Select (CS) and Read (RD) signals.
- What is the power dissipation of the AD7828BR?
The typical power dissipation is 40 mW.
- What type of reference inputs does the AD7828BR have?
The AD7828BR has fully differential reference inputs.
- What is the error specification of the AD7828BR?
The error specification is 1/2 LSB.
- In what package is the AD7828BR available?
The AD7828BR is available in a 28-SOIC package.
