Overview
The AD7829BR from Analog Devices Inc. is a high-speed, 8-bit analog-to-digital converter (ADC) designed for a variety of applications requiring fast and accurate analog-to-digital conversion. This component is part of the AD7822/AD7825/AD7829 family, which offers microprocessor-compatible ADCs with multiple analog input channels. The AD7829BR is particularly suited for systems that need to handle multiple single-ended analog inputs efficiently.
Key Specifications
| Parameter | Value |
|---|---|
| Type | Analog to Digital Converter (ADC) |
| Package / Case | SOIC (Surface Mount) |
| Number of Pins | 28 |
| Number of Bits | 8 |
| Converter Type | ADC, Half-Flash Method |
| Resolution | 8 bits |
| Sampling Rate | Up to 2 MSPS |
| Number of Analog In Channels | 8 single-ended |
| Supply Voltage | 3 V ± 10%, 5 V ± 10% |
| Operating Temperature | -40°C to +85°C |
| Conversion Time | 420 ns |
| Analog Input Voltage-Max | 5.5 V |
| Linearity Error-Max (EL) | ±0.75 LSB |
Key Features
- High-speed conversion time of 420 ns, allowing for fast data acquisition and processing.
- On-chip track-and-hold amplifier and 2.5 V reference voltage.
- Flexible parallel interface with End-of-Conversion (EOC) pulse for standalone operation.
- Automatic power-down at the end of conversion to reduce power consumption.
- Input span adjustment via the VMID pin to offset the input span.
- Wide operating supply range: 3 V ± 10% and 5 V ± 10%.
Applications
- Data acquisition systems.
- DSP (Digital Signal Processing) front ends.
- Disk drives.
- Mobile communication systems, including subsampling applications.
Q & A
- What is the conversion time of the AD7829BR?
The conversion time of the AD7829BR is 420 ns. - How many analog input channels does the AD7829BR have?
The AD7829BR has 8 single-ended analog input channels. - What is the operating temperature range of the AD7829BR?
The operating temperature range is -40°C to +85°C. - Does the AD7829BR have an on-chip reference voltage?
Yes, the AD7829BR has an on-chip 2.5 V reference voltage. - What is the maximum sampling rate of the AD7829BR?
The maximum sampling rate is up to 2 MSPS. - What type of package is the AD7829BR available in?
The AD7829BR is available in a 28-lead SOIC package. - Does the AD7829BR support automatic power-down?
Yes, the AD7829BR supports automatic power-down at the end of conversion. - What is the maximum analog input voltage for the AD7829BR?
The maximum analog input voltage is 5.5 V. - Can the input span be adjusted on the AD7829BR?
Yes, the input span can be adjusted via the VMID pin. - What are some common applications of the AD7829BR?
Common applications include data acquisition systems, DSP front ends, disk drives, and mobile communication systems.
