ADS7820UB

Analog To Digital Converters (ADC) Overview

The ADS7820UB is a 12-bit successive approximation analog-to-digital converter (ADC) manufactured by Burr-Brown. It features a single-ended input channel and utilizes a parallel access interface for data output. The device operates within an extended industrial temperature range of -40°C to +85°C and is housed in a 28-pin plastic small outline (PDSO) package. Key electrical specifications include a maximum conversion time of 1.02 µs, supporting sampling rates up to 800 kHz. The ADC accepts analog input voltages ranging from -10 V to +10 V and exhibits a maximum linear error of 0.0183%. It is RoHS compliant.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 800 kHz sampling rate capability
• Wide dual supply operation supporting ±10 V analog inputs
• Parallel digital interface for high-speed data transfer
• Extended operating temperature range (-40°C to +85°C)

Analog To Digital Converters (ADC) Applications

• High-speed data acquisition systems
• Industrial process control monitoring
• Portable instrumentation requiring wide dynamic range

Analog To Digital Converters (ADC) Procurement Notes

Verify the manufacturer designation, as Texas Instruments acquired Burr-Brown. Confirm RoHS compliance status, as some legacy listings may indicate non-compliance while others specify it. Ensure the specific suffix 'UB' corresponds to the correct tape-and-reel or tube packaging variant required for the assembly process.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-channel, high-speed 12-bit conversion is required with wide bipolar input ranges. The parallel interface necessitates more GPIO pins compared to serial alternatives but offers lower latency. Verify that the system power supplies can provide the necessary negative voltage rail for the ±10 V input range.

Analog To Digital Converters (ADC) Part Context

This part belongs to the ADS78xx series of sampling ADCs designed for medium-to-high speed applications. While the ADS7844N provides multi-channel serial access, the ADS7820UB focuses on single-channel performance with parallel throughput. The transition from Burr-Brown to Texas Instruments branding is common in datasheets for this family.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements are not explicitly confirmed in the provided documentation. Consider the ADS7816 or ADS7817 for similar SAR architectures, though interface differences (serial vs. parallel) must be addressed.