ADS826E/1KG4

Analog To Digital Converters (ADC) Overview

The ADS826E/1KG4 is a 10-bit, 60MHz sampling pipeline Analog-to-Digital Converter (ADC) manufactured by Texas Instruments. It operates from a single +5V supply and features a high-bandwidth track-and-hold circuit with an internal reference or external reference option. The device supports both single-ended and differential analog inputs, offering a programmable input range of 1Vp-p or 2Vp-p via the RSEL pin. Key electrical specifications include a Signal-to-Noise Ratio (SNR) of 60dB at 1MHz input frequency, a Spurious-Free Dynamic Range (SFDR) of 74dBFS, and a typical power dissipation of 265mW in normal operation, reducing to 20mW in power-down mode. It utilizes digital error correction for excellent linearity.

Analog To Digital Converters (ADC) Feature Summary

• High performance: 60dB SNR and 74dBFS SFDR at 1MHz input frequency.
• Flexible input configuration: Supports single-ended or differential analog inputs with programmable 1Vp-p or 2Vp-p full-scale ranges.
• Reference options: Includes an internal reference or allows for external reference connection for improved multi-channel matching.
• Low power consumption: 265mW typical power dissipation; 20mW in power-down mode.
• +3V/+5V logic I/O compatible: Dedicated VDRV pin allows selection of 3V or 5V logic levels for output drivers.

Analog To Digital Converters (ADC) Applications

• Medical imaging systems
• Communications equipment
• CCD imaging applications
• Video digitizing circuits
• Test and measurement instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify that the ordering suffix '/1K' corresponds to the Tape and Reel packaging containing 1000 devices per reel, as specified in the manufacturer's ordering information. Confirm the package type is SSOP-28 (DB designator) and the operating temperature range is -40°C to +85°C. Ensure compatibility with single +5V supply requirements and check for any specific handling precautions regarding electrostatic discharge sensitivity during installation.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS826E/1KG4 when a 10-bit resolution and 60MHz sampling rate are required for high-speed data acquisition. Choose this model over the ADS823 if +3V logic level compatibility on the clock input is necessary, as the ADS826 accepts a +3V clock while the ADS823 does not. Consider the external reference capability if precise gain and offset matching across multiple channels is critical for the application. Ensure the driving amplifier can support the required common-mode voltage and bandwidth for the selected input configuration.

Analog To Digital Converters (ADC) Part Context

The ADS826E/1KG4 belongs to the ADS82x family of high-speed CMOS pipeline ADCs from Texas Instruments. It is pin-compatible with the 10-bit, 40MHz ADS822/ADS825 and the 10-bit, 75MHz ADS828. The 'E' suffix indicates the extended industrial temperature range (-40°C to +85°C), and the '/1KG4' suffix denotes the tape and reel quantity of 1000 units with lead-free/RoHS compliance. It shares architectural similarities with the ADS823 but offers specific logic interface flexibility.

Analog To Digital Converters (ADC) Replacement Considerations

The ADS823E is a pin-compatible alternative within the same family, differing primarily in clock input voltage requirements. For higher speed, the ADS828 (75MHz) is available. For lower speed, the ADS822/ADS825 (40MHz) are options. Verify that any replacement maintains the required 10-bit resolution, sampling rate, and SSOP-28 package form factor.

Analog To Digital Converters (ADC) FAQ

What is the difference between the ADS826 and ADS823 regarding logic inputs?

The ADS826 accepts a +3V clock input, making it compatible with +3V/+5V logic families, whereas the ADS823 requires a different logic level specification for its clock input.

How is the analog input range programmed?

The input range is selected using the RSEL pin. Connecting RSEL HIGH sets the full-scale range to 2Vp-p, while connecting it LOW sets the range to 1Vp-p.

Can the internal reference be disabled?

Yes, the internal reference can be disabled by connecting the INT/EXT pin HIGH, allowing the use of an external reference voltage applied to the REFT and REFB pins.

What is the data latency of the ADS826?

The ADS826 has a data latency of 5 clock cycles due to its 9-stage pipelined architecture with digital error correction.