AD7829BRWZ-1RL7

Overview

The AD7829BRWZ-1RL7 is an 8-bit, 8-channel analog-to-digital converter with a maximum throughput of 2 MSPS and a conversion time of 420 ns. It operates from a single 3 V or 5 V supply and features an on-chip 2.5 V reference. The device includes an integrated track-and-hold amplifier and a half-flash ADC architecture. It supports flexible parallel interfacing with microprocessors and DSPs via address decoding logic. Key specifications include a Signal-to-(Noise + Distortion) Ratio of 48 dB min at 30 kHz input frequency and ±0.75 LSB max Integral Nonlinearity.

Feature Summary

• Integrated 8-channel multiplexer with automatic channel selection via address inputs without requiring write commands.
• On-chip 2.5 V voltage reference with low temperature coefficient for stable operation.
• Automatic power-down mode triggered by the CONVST pin state at the end of conversion to minimize power consumption.
• VMID pin allows adjustment of the analog input span center point to accommodate system offsets or bipolar signals.

Applications

• Data acquisition systems
• DSP front ends
• Disk drives
• Mobile communication systems subsampling applications

Procurement Notes

Verify the specific ordering suffix RL7 corresponds to the reel packaging configuration as defined in the manufacturer's official ordering guide. Confirm that the B version grade meets the required industrial temperature range specifications for the intended application environment before finalizing procurement.

Selection Notes

Select this component when an 8-bit resolution with high-speed multi-channel sampling is required. Ensure the system can accommodate the 420 ns conversion latency and the specific parallel interface timing requirements. Verify that the available supply voltage aligns with the 3 V or 5 V operational ranges specified in the datasheet.

Part Context

This part belongs to the AD7829 family of high-speed, multi-channel ADCs from Analog Devices. It shares architectural similarities with other members but is distinguished by its specific package type and revision level. The BRWZ designation indicates a wide-body SOIC package suitable for surface-mount assembly.

Replacement Considerations

Consult the official Analog Devices replacement matrix for verified cross-reference part numbers. Do not assume functional compatibility with other 8-bit ADCs without verifying pinout, timing, and electrical specification alignment.