ADS7809UB

Analog To Digital Converters (ADC) Overview

The ADS7809UB is a 16-bit resolution, single-channel successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It operates within an analog and digital supply voltage range of 4.75 V to 5.25 V. The device supports a sampling rate of 100 kS/s with single-ended input configuration. Key performance metrics include a signal-to-noise ratio (SNR) of 88 dB and a SINAD of 88 dB. Integral nonlinearity is specified at +/- 2 LSB, while differential nonlinearity is +/- 1 LSB. Power consumption is typically 81.5 mW. It features both external and internal reference options and utilizes a serial interface. The component is housed in a SOIC-20 package and functions across a temperature range of -40°C to +85°C.

Analog To Digital Converters (ADC) Feature Summary

• High-resolution 16-bit data conversion capability for precision applications
• Integrated serial interface simplifies connection to microprocessors
• Flexible reference architecture supporting both internal and external voltage references
• Low power consumption suitable for battery-operated systems

Analog To Digital Converters (ADC) Applications

• Industrial process control systems requiring high accuracy
• Portable instrumentation and measurement devices
• Data acquisition systems with single-channel requirements
• Medical equipment needing precise analog signal digitization

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'UB' against the manufacturer's official datasheet to confirm pinout compatibility and package dimensions. Ensure that the required operating temperature range aligns with the industrial grade specification. Confirm whether the design requires the internal reference or if an external reference circuit is necessary, as this impacts board layout and component selection. Check for moisture sensitivity level requirements during assembly.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS7809UB when a single-channel, 16-bit resolution is required with a sampling rate up to 100 kS/s. Consider this part over higher-speed alternatives if power consumption is a critical constraint, given its low typical power dissipation. Evaluate the need for internal versus external reference stability based on system noise requirements. Compare with other SAR ADCs if differential inputs or multiple channels are needed, as this model is single-ended and single-channel.

Analog To Digital Converters (ADC) Part Context

The ADS7809 belongs to the ADS7809 series of 16-bit CMOS sampling analog-to-digital converters from Texas Instruments. This series is designed for applications demanding high accuracy and low power. The UB suffix indicates a specific package variant, typically the SOIC-28 or similar small outline package depending on the exact revision, distinct from other packaging options like the DIP or TSSOP found in related models.

Analog To Digital Converters (ADC) Replacement Considerations

Direct replacements may include other 16-bit SAR ADCs from Texas Instruments such as the ADS7816 or ADS7822, provided pinouts and interface protocols match. Verify that substitute parts offer comparable SNR and INL specifications. Cross-reference with industry-standard equivalents if available, ensuring voltage ranges and sampling rates meet the original design constraints.