ADS7817UB/2K5

Analog To Digital Converters (ADC) Overview

The ADS7817UB/2K5 is a 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Texas Instruments. It features a high-impedance fully differential analog input and operates with a single +5V supply, consuming 2.3mW at a 200kHz sampling rate. The device utilizes an external reference voltage ranging from 100mV to 2.5V to define the input span. Data is transferred via a synchronous 3-wire serial interface compatible with SPI. The component is housed in an SOIC-8 package and is supplied in tape and reel format.

Analog To Digital Converters (ADC) Feature Summary

• 12-Bit Resolution with Differential Input
• 200kHz Sampling Rate
• Micro Power Consumption: 2.3mW at full speed
• External Reference Voltage Range: 100mV to 2.5V

Analog To Digital Converters (ADC) Applications

• Transducer Interface
• Battery Operated Systems
• Remote Data Acquisition
• Isolated Data Acquisition
• AC Motor Control

Analog To Digital Converters (ADC) Procurement Notes

Verify that the specific ordering suffix /2K5 corresponds to the tape and reel packaging configuration containing 2500 devices per reel. Confirm the package type is SOIC-8 and the performance grade matches the required linearity specifications for the application.

Analog To Digital Converters (ADC) Selection Notes

Select this part when a differential input architecture is required to reject common-mode noise. Ensure the system can provide an external reference voltage between 100mV and 2.5V, as no internal reference is present. Verify that the power supply remains within the 4.75V to 5.25V range for specified performance.

Analog To Digital Converters (ADC) Part Context

This component belongs to the ADS7817 family of micro-power sampling ADCs. The 'UB' designation indicates the SOIC-8 package variant with specific linearity grades, while '/2K5' specifies the tape and reel shipping quantity. Other variants in the series include PDIP-8 and MSOP-8 packages.

Analog To Digital Converters (ADC) Replacement Considerations

ADS7817U/2K5

Analog To Digital Converters (ADC) FAQ

What is the data format output by the ADS7817?

The digital output is provided in Binary Two’s Complement format.

How does the reference voltage affect the input range?

The reference voltage sets the analog input range; the full-scale input span is equal to two times the reference voltage (2 • VREF).

What is the maximum operating temperature?

The specified performance temperature range extends up to +85°C.