DDC114 Texas Instruments Integrated Circuit (Quad Flat No-Lead) In Stock
Texas Instruments DDC114 is a quad-channel current-input 20-bit analog-to-digital converter designed for precision charge measurement and photodiode readout, offering simultaneous 4-channel conversion in a compact QFN package for scientific instrumentation and imaging applications.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat No-Lead
- Pin Count
- 49
- Lifecycle
- ACTIVE
- Datasheet
- DDC114 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4 simultaneous current-input channels with 20-bit resolution for high-precision charge and current measurement without external transimpedance amplifiers
- Programmable integration time and dual integration capacitor banks enable dynamic range adjustment from picoamperes to microamperes in a single device
- Compact QFN package minimizes parasitic capacitance on current input nodes, preserving sub-picoampere noise performance in photodetector array readout circuits
Applications
The DDC114 is optimized for high-sensitivity photodiode array readout in scientific instruments such as spectrophotometers, X-ray detectors, and fluorescence imaging systems where 4 channels of simultaneous 20-bit current digitization are required. Its programmable integration capacitors allow dynamic range scaling from femtoampere background currents to microampere peak signals without changing hardware, making it valuable in astronomy sensors and particle physics detector front ends. The current-input architecture eliminates external transimpedance amplifiers, simplifying PCB layout and reducing noise in charge-integrating detector applications.
Specifications
| YTEOL | EYTEOL |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Country of Origin |
Frequently Asked Questions
How does the DDC114 achieve 20-bit resolution from photodiode current inputs without external amplifiers?
The DDC114 integrates a charge-integration front end that accumulates photodiode current directly onto a precision on-chip capacitor, then converts the resulting voltage with a 20-bit ADC. This eliminates the transimpedance amplifier stage that would otherwise add thermal noise and bandwidth limitations. At full-scale integration, the device resolves charge differences as small as 1 fC from input currents ranging from 10 pA to 1 µA, depending on the selected integration capacitance.
In a 4-channel optical spectrometer design, how does simultaneous conversion in the DDC114 improve measurement accuracy compared to multiplexed ADCs?
The DDC114 converts all 4 current input channels simultaneously during the same integration period, eliminating the time-skew error that occurs when a multiplexed ADC samples channels sequentially. In spectroscopy applications where 4 photodiodes measure overlapping spectral bands, simultaneous 20-bit sampling ensures that transient light fluctuations affect all channels identically, preserving spectral ratio accuracy to better than 0.01% — an improvement of roughly 10x over sequential architectures sampling at 1 kHz with 100 µs integration windows.
What input current range and integration time settings does the DDC114 support for X-ray detector readout?
The DDC114 supports input currents from below 10 pA up to approximately 1 µA per channel by selecting from four programmable integration capacitor settings ranging from 12.5 pF to 200 pF. Integration times are externally controlled from sub-microsecond to multi-millisecond windows, allowing adaptation to X-ray pulse widths from 1 µs to 10 ms. The 20-bit resolution provides over 1,000,000:1 dynamic range within a single integration window, sufficient for both low-dose diagnostic and high-flux industrial X-ray imaging.
Related Guides
ECMF02-4CMX8 Common-Mode Filter with ESD Protection: Selection Guide
Compare ECMF02-4CMX8 vs ECMF02-2AMX6, ECMF04-4HSM10, and other ST ECMF filters. Choose the right 4-channel common-mode filter with ESD protection for USB 2.0.
Jun 20, 2026
AD5204 Quad Digital Potentiometer Selection Guide (2026)
How to choose the right AD5204 quad digital potentiometer: compare 10kΩ vs 100kΩ variants, TSSOP vs SOIC packages, and SPI interface options for your design.
Jun 20, 2026
0402 10uF X5R Decoupling Design Guide for Compact Digital Rails
Application note for using CL05A106MP5NUNC-class 0402 10uF X5R MLCCs in compact digital rail decoupling designs.
Jun 19, 2026
How to Choose an 0805 10uF MLCC for Decoupling and Bulk Capacitance
Selection guide for choosing 0805 10uF MLCCs around CL21A106KOQNNNE, covering derating, dielectric, package, and sourcing checks.
Jun 19, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”