Overview
The AD7828BQ is a high-speed, 8-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component features an 8-channel input multiplexer, making it a cost-effective and space-saving solution for multichannel ADC systems. The AD7828BQ operates on a single 5 V supply and includes a built-in track-and-hold function, enabling it to handle signals with high slew rates up to 157 mV/µs and frequencies up to 10 kHz without the need for an external sample-and-hold circuit. The device is fabricated using an advanced, all ion-implanted, linear-compatible CMOS process (LC2MOS), ensuring low power dissipation and high performance.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 8 |
| Resolution | 8-bit |
| Conversion Rate | 2.5 µs/channel |
| Analog Input Range | 0 V to 5 V |
| Reference Voltage | 5 V (external) |
| Supply Voltage | 5 V |
| Power Dissipation | 40 mW (typ) |
| Operating Temperature Range | -40°C to +85°C (B, C Versions) |
| Package Type | 28-lead DIP, 28-terminal surface mount |
Key Features
- 4 or 8 analog input channels with built-in track-and-hold function
- Fast conversion rate of 2.5 µs per channel
- Single 5 V supply simplifies system power requirements
- Low power dissipation: 40 mW (typ)
- Tight error specification: ±1/2 LSB
- Easy-to-use digital interface compatible with most microprocessors
- No clock signal required for the ADC
- High slew rate handling: up to 157 mV/µs
Applications
The AD7828BQ is suitable for a variety of applications requiring high-speed, multichannel analog-to-digital conversion. These include:
- Industrial control systems
- Medical devices
- Aerospace and defense systems
- Automotive systems
- Data acquisition systems
Q & A
- What is the resolution of the AD7828BQ?
The AD7828BQ has an 8-bit resolution. - How many analog input channels does the AD7828BQ have?
The AD7828BQ has 8 analog input channels. - What is the conversion rate of the AD7828BQ?
The conversion rate of the AD7828BQ is 2.5 µs per channel. - What is the operating temperature range of the AD7828BQ?
The operating temperature range of the AD7828BQ is -40°C to +85°C for B and C versions. - Does the AD7828BQ require an external sample-and-hold circuit?
No, the AD7828BQ has a built-in track-and-hold function. - What is the power dissipation of the AD7828BQ?
The power dissipation of the AD7828BQ is typically 40 mW. - What type of supply voltage does the AD7828BQ require?
The AD7828BQ requires a single 5 V supply. - Is the AD7828BQ compatible with most microprocessors?
Yes, the AD7828BQ has a fast, easy-to-use digital interface compatible with most microprocessors. - Does the AD7828BQ require a clock signal for operation?
No, the AD7828BQ does not require a clock signal for operation. - What is the slew rate handling capability of the AD7828BQ?
The AD7828BQ can handle signals with slew rates up to 157 mV/µs.
