Overview
The AD7829BRW-1 is a high-speed, 8-channel, 8-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. This device is designed for high-throughput applications, offering a maximum sampling rate of 2 million samples per second (MSPS). It is particularly suited for use in data acquisition systems, DSP front ends, disk drives, and mobile communication systems. The AD7829BRW-1 features an on-chip reference, a track-and-hold amplifier, and a pipelined 8-bit half-flash ADC architecture, making it a versatile and reliable component for various digital signal processing tasks.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Package | 28-SOIC (0.295", 7.50mm Width), 28-TSSOP |
| Number of Bits | 8 |
| Sampling Rate (Per Second) | 2 MSPS |
| 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 | Pipelined |
| Reference Type | External, Internal (2.5 V) |
| Voltage - Supply, Analog | 2.7 V ~ 3.3 V, 5 V |
| Voltage - Supply, Digital | 2.7 V ~ 3.3 V, 5 V |
| Operating Temperature | -40°C ~ 85°C |
| Conversion Time | 420 ns |
Key Features
- High-Speed Conversion: The AD7829BRW-1 offers a fast conversion time of 420 ns, making it suitable for high-throughput applications.
- On-Chip Reference: The device includes an on-chip reference of 2.5 V with a 2% tolerance.
- Track-and-Hold Amplifier: An on-chip track-and-hold amplifier ensures accurate sampling of the analog input signals.
- Flexible Power Supply: The ADC can operate from a single 3 V ± 10% and 5 V ± 10% supply.
- Automatic Power-Down: The device features automatic power-down at the end of a conversion, reducing power consumption.
- Parallel Interface: A flexible parallel interface allows easy interfacing to microprocessors and DSPs, with an EOC (end of conversion) pulse for stand-alone operation.
- Input Range Flexibility: The input range can be centered anywhere in the range AGND to VDD using the VMID pin.
Applications
- Data Acquisition Systems: Ideal for high-speed data acquisition in various industrial and medical applications.
- DSP Front Ends: Suitable for use in digital signal processing systems requiring high-speed analog-to-digital conversion.
- Disk Drives: Used in disk drive systems for precise and fast data conversion.
- Mobile Communication Systems: Applicable in mobile communication systems, especially in subsampling applications.
Q & A
- What is the maximum sampling rate of the AD7829BRW-1?
The maximum sampling rate of the AD7829BRW-1 is 2 million samples per second (MSPS).
- What is the architecture of the AD7829BRW-1 ADC?
The AD7829BRW-1 uses a pipelined 8-bit half-flash ADC architecture.
- What are the available package types for the AD7829BRW-1?
The AD7829BRW-1 is available in 28-lead SOIC and 28-lead TSSOP packages.
- What is the operating temperature range of the AD7829BRW-1?
The operating temperature range is -40°C to 85°C.
- Does the AD7829BRW-1 have an on-chip reference?
Yes, the AD7829BRW-1 includes an on-chip reference of 2.5 V with a 2% tolerance.
- How does the AD7829BRW-1 manage power consumption during idle periods?
The device features automatic power-down at the end of a conversion to reduce power consumption.
- What type of data interface does the AD7829BRW-1 use?
The AD7829BRW-1 uses a parallel data interface.
- Can the AD7829BRW-1 operate with different supply voltages?
Yes, it can operate from a single 3 V ± 10% and 5 V ± 10% supply.
- What is the conversion time of the AD7829BRW-1?
The conversion time is 420 ns.
- How many analog input channels does the AD7829BRW-1 have?
The AD7829BRW-1 has eight analog input channels.
