DDC112UK

Analog To Digital Converters (ADC) Overview

The DDC112UK is a dual-channel, 20-bit analog-to-digital converter (ADC) manufactured by Texas Instruments. It utilizes a sigma-delta architecture and features two single-ended current inputs. The device operates on a single supply voltage ranging from 4.75 V to 5.25 V for both analog and digital domains. Communication with the host system is handled via an SPI interface. The component is housed in a 28-pin SOIC package and is rated for an operating temperature range of 0°C to +70°C.

Analog To Digital Converters (ADC) Feature Summary

• Dual-channel input capability designed for high-resolution charge integration applications
• Sigma-delta modulation structure providing 20-bit resolution
• Integrated charge amplifier with external feedback capacitor configuration

Analog To Digital Converters (ADC) Applications

• Computed Tomography (CT) systems
• Capacitance measurement circuits
• Weak current signal acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific suffix 'U' indicates tube packaging when ordering. Confirm the industrial temperature grade (0°C to +70°C) matches the target environment requirements. Ensure the design supports the required 4.75 V to 5.25 V power supply rails for both analog and digital sections. Check for RoHS compliance documentation corresponding to the KG4 variant if lead-free specifications are mandatory.

Analog To Digital Converters (ADC) Selection Notes

Select this component when high-resolution measurement of small currents or capacitances is required. The dual-channel design allows simultaneous sampling of two signals. Consider the external feedback capacitor dependency for setting the input range. Verify that the SPI interface timing meets the microcontroller's clock speed limitations. Evaluate the thermal performance within the specified operating temperature range.

Analog To Digital Converters (ADC) Part Context

The DDC112 belongs to the DDC112 family of precision ADCs from Texas Instruments. This series is optimized for applications requiring high accuracy in measuring low-level signals. The UK variant specifically denotes the commercial temperature range and tube packaging format, distinguishing it from other tape-and-reel options like the U/1K or Y/2K.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible substitutes within the same family include the DDC112U and DDC112Y variants, which differ primarily in packaging and temperature rating. Cross-family replacements require careful evaluation of interface compatibility and resolution differences.