Overview
The AD7824TQ is a high-speed, multichannel, 8-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. This component is part of the AD7824 series, which offers a choice of four multiplexed analog input channels. The AD7824TQ is designed for applications requiring fast and accurate analog-to-digital conversion with minimal power consumption.
The device operates from a single +5 V supply and features a built-in track-and-hold function, enabling it to handle signals up to 10 kHz bandwidth with a slew rate of 157 mV/µs. The half-flash conversion technique used in the AD7824TQ provides a fast conversion rate of 2.5 µs per channel, making it suitable for high-speed data acquisition systems.
Key Specifications
| Parameter | Value | Unit | Conditions/Comments |
|---|---|---|---|
| Resolution | 8 | Bits | |
| Total Unadjusted Error | ±1/2 LSB max | TMIN to TMAX | |
| Conversion Rate | 2.5 µs/channel | ||
| Sampling Frequency | 100 kHz | Per channel | |
| Analog Input Range | 0 V to +5 V | Using external +5 V reference | |
| Supply Voltage | +5 V | ||
| Power Dissipation | 40 mW (typ) | ||
| Operating Temperature Range | –55°C to +125°C | ||
| Package Type | 0.3" wide, 24-pin DIP |
Key Features
- 4-channel input multiplexer, providing a cost-effective and space-saving multichannel ADC system.
- Fast conversion rate of 2.5 µs per channel with a per-channel sampling frequency of 100 kHz.
- Built-in track-and-hold function capable of handling signals up to 10 kHz bandwidth with a slew rate of 157 mV/µs.
- Tight total unadjusted error specification and channel-to-channel matching, eliminating the need for user trims.
- Single +5 V supply simplifying system power requirements.
- Fast and easy-to-use digital interface allowing connection to most popular microprocessors with minimal external components. No clock signal is required for the ADC.
Applications
The AD7824TQ is suitable for various high-speed data acquisition applications, including:
- Industrial control systems requiring fast and accurate analog-to-digital conversion.
- Medical devices that need to process multiple analog signals quickly and precisely.
- Aerospace and defense systems where high-speed data acquisition is critical.
- Automotive systems that require robust and fast ADCs for various sensor readings.
- Test and measurement equipment where high-speed data acquisition is essential.
Q & A
- What is the resolution of the AD7824TQ?
The AD7824TQ has an 8-bit resolution.
- What is the conversion rate of the AD7824TQ?
The conversion rate is 2.5 µs per channel.
- How many analog input channels does the AD7824TQ have?
The AD7824TQ has four multiplexed analog input channels.
- What is the operating supply voltage of the AD7824TQ?
The operating supply voltage is +5 V.
- What is the typical power dissipation of the AD7824TQ?
The typical power dissipation is 40 mW.
- Does the AD7824TQ require an external clock signal?
No, the AD7824TQ does not require an external clock signal due to its half-flash conversion technique.
- What is the maximum sampling frequency per channel for the AD7824TQ?
The maximum sampling frequency per channel is 100 kHz.
- What is the slew rate of the signals that the AD7824TQ can handle?
The AD7824TQ can handle signals with a slew rate of 157 mV/µs.
- What type of package is the AD7824TQ available in?
The AD7824TQ is available in a 0.3" wide, 24-pin DIP package.
- What is the operating temperature range of the AD7824TQ?
The operating temperature range is –55°C to +125°C.
