ADS802E

Analog To Digital Converters (ADC) Overview

The ADS802E is a monolithic 12-bit, 10MHz Analog-to-Digital Converter (ADC) utilizing a pipeline architecture with digital error correction. It operates from a single +5V supply and features a wideband track-and-hold circuit with a 65MHz bandwidth. The device accepts differential or single-ended input signals and includes an internal reference. Key electrical specifications include a typical Signal-to-Noise Ratio (SNR) of 67dB at 500kHz input, a Spurious-Free Dynamic Range (SFDR) of 77dBFS, and power consumption of 250mW. It is housed in a 28-pin SSOP package.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with 10MHz sampling rate and pipeline architecture
• Wideband track-and-hold with 65MHz -3dB bandwidth
• Internal reference providing a differential full-scale input range of +1.25V to +3.25V
• Digital error correction ensuring no missing codes and excellent linearity

Analog To Digital Converters (ADC) Applications

• IF and baseband digitization
• CCD imaging systems
• Video digitizing
• Gamma cameras
• Test instrumentation

Analog To Digital Converters (ADC) Procurement Notes

Verify the current marketing status of the ADS802E before procurement. The datasheet indicates this specific part number may be obsolete. Confirm availability through authorized distributors and check for active replacement options if new designs are required.

Analog To Digital Converters (ADC) Selection Notes

Select the ADS802E for applications requiring high-speed 12-bit conversion with low power consumption. Ensure the driving circuit can provide the required common-mode voltage of +2.25V for differential inputs. Verify that the clock source meets the 50% duty cycle and low jitter requirements to maintain dynamic performance.

Analog To Digital Converters (ADC) Part Context

The ADS802E is the SSOP-28 packaged variant of the ADS802 family. It shares identical electrical characteristics with the ADS802U (SOIC-28). The 'E' suffix denotes the extended temperature range operation from -40°C to +85°C.

Analog To Digital Converters (ADC) Replacement Considerations

The datasheet lists the ADS802E as obsolete. No direct functional replacements are specified within the provided documentation. Designers should evaluate newer Texas Instruments ADC families for equivalent performance specifications.

Analog To Digital Converters (ADC) FAQ

What is the data latency of the ADS802E?

The data latency is 6.5 convert clock cycles from the start of the conversion to valid output data.

How is the output coding configured?

The output coding is selectable between Straight Offset Binary (SOB) and Binary Two’s Complement (BTC) by controlling the MSBI pin (Pin 19).

Can the ADS802E accept single-ended inputs?

Yes, the ADS802E can be configured for single-ended inputs by tying the complementary input to the common-mode reference voltage, resulting in a full-scale range of +0.25V to +4.25V.