DDC112U

Analog To Digital Converters (ADC) Overview

The DDC112U is a dual current input, 20-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. It utilizes delta-sigma architecture and features two single-ended current inputs with an external reference type. The device operates on a single supply voltage ranging from 4.75 V to 5.25 V for both analog and digital domains. It communicates via an SPI interface and is housed in a 28-pin SOIC package. The component supports a maximum conversion time of 220 µs and functions within an operating temperature range of 0°C to +70°C.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel capability for simultaneous measurement of two independent current signals
• High-resolution 20-bit delta-sigma conversion architecture for precision data acquisition
• Integrated charge amplifier structure optimized for low-level current sensing applications

Analog To Digital Converters (ADC) Applications

• Computed Tomography (CT) systems
• X-ray detector readout electronics
• Medical imaging sensor interfaces

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'U' against the manufacturer's official documentation to confirm the package type and commercial grade specifications. Ensure that the required external components, such as the feedback capacitor and reference voltage source, are compatible with the design requirements before procurement. Confirm RoHS compliance status through the latest datasheet revision.

Analog To Digital Converters (ADC) Selection Notes

Select this component when designing systems requiring high-precision digitization of small currents, such as those found in medical imaging detectors. Consider the 20-bit resolution and dual-input configuration if simultaneous channel sampling is necessary. Evaluate the need for an external reference voltage and ensure the system can accommodate the required feedback capacitance for optimal performance.

Analog To Digital Converters (ADC) Part Context

The DDC112U belongs to the DDC112 family of integrated circuits designed specifically for charge-sensitive applications. This series is engineered to interface directly with photodiode arrays and other current-output sensors. The U suffix denotes the standard 28-pin SOIC package variant, distinguishing it from other packaging options available within the same functional family.

Analog To Digital Converters (ADC) Replacement Considerations

Consult the Texas Instruments product selection guide for alternative devices within the DDC112 family or comparable high-resolution current-input ADCs. Verify pin compatibility and electrical specifications before substituting any other part number.