Precision ADCs for In-Vitro Diagnostics
Example: Optical Signal Chain Block DiagramPrecision Optical Receiver Discrete Design
In-Vitro Diagnostics (IVD) utilizes blood, fluids, and tissue to detect diseases or medical conditions in patients. IVD equipment has many different uses throughout the healthcare industry, spanning hundreds of different equipment types such as: Immunoassay, polymerase chain reaction (PCR) and quantitative PCR (qPCR) analyzers, and Fluorescence Flow Cytometer. Despite this wide range of clinical uses, the electrical subsystems of many equipment use the analysis of light for measurements.
Design Considerations
- qPCR tests require a sensitive limit of detection (LoD) to maintain that the patient is being properly diagnosed.
- Higher channel count ADCs with smaller packages achieve more samples per reaction increasing the throughput and multiplexing capabilities.
What are the Key Specifications for Analog-to-Digital Converters (ADCs) in IVD?
- High Precision and Resolution: Highly accurate ADCs with a wide bandwidth are crucial to capture the subtle variations being measured during IVD test.
- High Sampling Rate: The ADC must have enough speed to capture the real-time fluctuations in the output signal.
- Low Noise: IVD systems require minimization of noise to maintain accuracy of the measurements.
Need additional assistance? Ask our engineers a question on the TI E2E™ Data Converters Support Forum.
Recommended Parts
| Part Number | Channel Count | Resolution | Sampling Rate (kSPS) | Input Type | Features |
|---|---|---|---|---|---|
Optical Signal Chain | |||||
| ADS9217 | 2 | 18 | 5000 | Differential | Integrated ADC Driver, Precision Reference, Common-mode Voltage Output Buffer, Wide Bandwidth |
| ADS9110 | 1 | 2000 | Differential | Daisy Chainable, Internal Oscillator | |
| ADS8900B | 1 | 20 | 1000 | Differential | Internal Oscillator |
| ADS7066 | 8 | 16 | 250 | Single-ended | GPIOs, Programmable Averaging Filters, Low Leakage MUX with Channel Sequencer |
| ADS7067 | 800 | ||||
| ADS127L11 | 1 | 24 | 400 | Differential Pseudo-differential Single-ended | Internal Oscillator, Wide Bandwidth |
Temperature Sensing | |||||
| ADS124S08 | 12 | 24 | 4 | Differential Single-ended | Integrated PGA, Integrated IDACs, Internal Reference and Temperature Sensor |
| ADS1220 | 4 | 2 | |||
For more devices, browse through the online parametric tool where you can sort by desired sampling rate, channel count, and other features.
