Overview
The AD7828LN, produced by Analog Devices Inc., is a high-speed, 8-channel, 8-bit analog-to-digital converter (ADC). This device is part of the AD7828 series, which offers a cost-effective and space-saving solution for multichannel ADC systems. The AD7828LN operates on a single 5 V supply and features a built-in track-and-hold function, allowing it to handle signals up to 10 kHz bandwidth with a slew rate of 157 mV/µs. The converter uses a half-flash conversion technique, which eliminates the need for an external clock signal, making it easy to interface with most popular microprocessors.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | 8 |
| Resolution | 8-bit |
| Conversion Rate | 2.5 µs/channel |
| Sampling Frequency | 50 kHz |
| Analog Input Range | 0 V to 5 V |
| Supply Voltage | 5 V |
| Power Dissipation | 40 mW (typ) |
| Operating Temperature Range | 0°C to +70°C |
| Package Type | 28-lead PDIP, 28-terminal surface mount |
Key Features
- 4 or 8 analog input channels (AD7828 has 8 channels)
- Built-in track-and-hold function capable of handling signals up to 10 kHz bandwidth
- Fast conversion rate of 2.5 µs per channel
- Single 5 V supply simplifies system power requirements
- Low power dissipation of 40 mW (typ)
- Tight total unadjusted error specification and channel-to-channel matching
- Easy-to-use digital interface with standard Chip Select (CS) and Read (RD) signals
- No external clock signal required for the ADC
- Fabricated in advanced, all ion-implanted, linear compatible CMOS process (LC2MOS)
Applications
- Industrial control systems
- Medical devices requiring multiple analog inputs
- Aerospace and defense systems
- Automotive systems needing high-speed ADCs
- Data acquisition systems
- Embedded systems requiring efficient and accurate analog-to-digital conversion
Q & A
- What is the resolution of the AD7828LN ADC?
The AD7828LN has an 8-bit resolution.
- How many analog input channels does the AD7828LN have?
The AD7828LN has 8 analog input channels.
- What is the conversion rate of the AD7828LN?
The conversion rate is 2.5 µs per channel.
- What is the operating supply voltage for the AD7828LN?
The operating supply voltage is 5 V.
- Does the AD7828LN require an external clock signal?
No, the AD7828LN does not require an external clock signal due to its half-flash conversion technique.
- What is the typical power dissipation of the AD7828LN?
The typical power dissipation is 40 mW.
- What is the temperature range for the AD7828LN?
The operating temperature range is 0°C to +70°C.
- What types of packages are available for the AD7828LN?
The AD7828LN is available in 28-lead PDIP and 28-terminal surface mount packages.
- How does the AD7828LN handle high-frequency signals?
The AD7828LN has a built-in track-and-hold function capable of handling signals up to 10 kHz bandwidth with a slew rate of 157 mV/µs.
- Is the AD7828LN easy to interface with microprocessors?
