ADS826E

Analog To Digital Converters (ADC) Overview

The Texas Instruments ADS826E is a 10-bit, 60MHz sampling pipeline analog-to-digital converter (ADC) designed for single +5V operation. It features a high-bandwidth track-and-hold amplifier and supports both single-ended and differential analog inputs. The device includes an internal reference but allows for external reference configuration via the INT/EXT pin to optimize gain and offset matching in multi-channel systems. Key performance metrics include a Signal-to-Noise Ratio (SNR) of 60dB at 1MHz input frequency and a Spurious-Free Dynamic Range (SFDR) of 74dBFS. Power consumption is 265mW during normal operation, reducing to 20mW in power-down mode. The ADS826E distinguishes itself from the ADS823E by supporting +3V/+5V logic I/O compatibility.

Analog To Digital Converters (ADC) Feature Summary

• 60MHz Sampling Rate with Pipelined Architecture
• 10-Bit Resolution with Low DNL of 0.25LSB
• +3V/+5V Logic I/O Compatibility on Digital Outputs
• Internal or External Reference Selection Capability

Analog To Digital Converters (ADC) Applications

• Medical Imaging Systems
• CCD Imaging Applications
• Video Digitizing Equipment
• Communications Infrastructure
• Test and Measurement Instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix when purchasing. The base part number ADS826E indicates rail packaging, while the suffix /1K denotes tape and reel quantities of 1000 units. Confirm that the required logic voltage levels match the +3V/+5V compatible specifications of the ADS826E variant rather than the ADS823E if low-voltage interfacing is necessary.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS826E over the ADS823E when the system requires digital interface compatibility with +3V logic families, as the ADS826E supports this range while the ADS823E does not. Both devices share identical analog performance characteristics, including the 60MHz sampling rate and 10-bit resolution. Ensure the application can accommodate the SSOP-28 package form factor and the single +5V supply requirement for optimal operation.

Analog To Digital Converters (ADC) Part Context

The ADS826E belongs to the ADS82x family of high-speed CMOS ADCs from Texas Instruments. It is pin-compatible with the 40MHz ADS822/ADS825 and the 75MHz ADS828, facilitating design upgrades within the same package footprint. The device utilizes digital error correction techniques to ensure excellent differential linearity and no missing codes, making it suitable for demanding imaging applications requiring high accuracy.

Analog To Digital Converters (ADC) Replacement Considerations

Public confirmed substitute part numbers: ADS823E (identical analog performance, lacks +3V logic support), ADS828 (higher 75MHz speed, similar architecture).

Analog To Digital Converters (ADC) FAQ

What is the difference between the ADS826E and ADS823E?

The primary difference is digital interface compatibility. The ADS826E supports +3V/+5V logic I/O, allowing it to interface directly with lower voltage logic families, whereas the ADS823E is typically optimized for +5V logic.

Can the ADS826E operate with an external reference?

Yes, the ADS826E allows disabling the internal reference by setting the INT/EXT pin HIGH. This enables the use of external references for improved temperature performance or full-scale range adjustment in multi-channel applications.

What is the data latency of the ADS826E?

The ADS826E has a data latency of 5 clock cycles due to its pipelined architecture. Output data becomes valid on the rising edge of the convert clock.