AD7828TQ

Overview

The AD7828TQ is an 8-bit, high-speed analog-to-digital converter featuring eight multiplexed single-ended analog inputs. It utilizes a half-flash architecture to achieve a sampling rate of 400 kS/s. The device operates on a single 5V supply and includes an internal sample-and-hold circuit. Data output is available via a parallel interface. It is housed in a 28-lead plastic small outline package (SOIC) and supports operation within a commercial temperature range of 0°C to +70°C.

Feature Summary

• Integrates eight multiplexed analog input channels with an internal sample-and-hold function
• Employs a half-flash conversion architecture for rapid data acquisition
• Provides parallel digital output interface for direct system connection

Applications

• High-speed data acquisition systems
• Industrial process control monitoring
• Medical instrumentation signal processing

Procurement Notes

Verify the specific suffix 'TQ' corresponds to the SOIC-28 package variant when sourcing. Confirm that the external reference voltage requirement aligns with system design constraints. Ensure compatibility with the 5V logic levels for the parallel data bus. Check current availability status as this component may be subject to lifecycle changes or limited distribution.

Selection Notes

Select the AD7828TQ when eight independent analog channels require simultaneous or sequential digitization at high speeds. This part is suitable for designs needing a parallel interface rather than serial alternatives like SPI. Consider the half-flash architecture for speed requirements where resolution beyond 8 bits is not necessary. Evaluate power consumption against thermal management capabilities in the target enclosure.

Part Context

This component belongs to the AD7824/AD7828 family of high-speed multichannel ADCs. The AD7828 variant specifically provides eight channels, whereas the AD7824 offers four. Both share identical architectural features including the half-flash core and sample-and-hold functionality. The TQ suffix denotes the specific surface-mount packaging configuration used for board integration.

Replacement Considerations

The MX7828 series represents a related product line from Maxim Integrated, now part of Analog Devices. While sharing similar functional specifications, differences exist in pinout compatibility and interface types. Verify electrical characteristics and package dimensions before substituting.