AD7829BRW-1RL7

Overview

The AD7829BRW-1RL7 is an 8-channel, 8-bit analog-to-digital converter (ADC) from Analog Devices. It features a half-flash architecture with a maximum throughput of 2 MSPS and a conversion time of 420 ns. The device operates on a single supply voltage of either 3 V ± 10% or 5 V ± 10%. Key specifications include a Signal-to-(Noise + Distortion) Ratio of 48 dB min, Integral Nonlinearity (INL) of ±0.75 LSB max, and Differential Nonlinearity (DNL) of ±0.75 LSB max. It includes an on-chip 2.5 V reference, a track-and-hold amplifier with 10 MHz full power bandwidth, and flexible parallel interface logic.

Feature Summary

• Integrates an on-chip 2.5 V reference voltage to simplify external circuit design.
• Features a VMID pin for analog input span adjustment to accommodate system offsets.
• Supports automatic power-down at the end of conversion to minimize power consumption.
• Provides channel selection via address inputs without requiring internal register writes.

Applications

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

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and reel specifications. Ensure compatibility with existing board layouts by checking pin configurations. Confirm RoHS compliance status through official datasheets before finalizing procurement decisions.

Selection Notes

Select this component when high-speed multi-channel sampling is required within a low-power constraint. The integrated reference and adjustable input span reduce external component count. Verify that the microprocessor interface timing requirements align with the specified access times and pulse widths.

Part Context

This part belongs to the AD7829-1 series, which offers eight single-ended analog input channels. It is designed for microprocessor-compatible applications requiring fast conversion rates. The device combines speed and low power consumption using a half-flash conversion technique suitable for real-time signal processing tasks.

Replacement Considerations

Check the AD7829BRUZ variant for TSSOP packaging if SOIC_W is unavailable. Verify functional equivalence regarding pinout and electrical parameters before substitution.