The AFE4400 is a fully-integrated analog front-end (AFE) ideally suited for pulse oximeter applications. The device consists of a low-noise receiver channel with an integrated analog-to-digital converter (ADC), an LED transmit section, and diagnostics for sensor and LED fault detection. The device is a very configurable timing controller. This flexibility enables the user to have complete control of the device timing characteristics. To ease clocking requirements and provide a low-jitter clock to the AFE4400, an oscillator is also integrated that functions from an external crystal. The device communicates to an external microcontroller or host processor using an SPI™ interface.
The device is a complete AFE solution packaged in a single, compact VQFN-40 package (6 mm × 6 mm) and is specified over the operating temperature range of 0°C to 70°C.
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | AFE4400 Integrated Analog Front-End for Heart Rate Monitors and Low-Cost Pulse Oximeters datasheet (Rev. H) | PDF | HTML | Jul 24, 2014 |
| White paper | Evolving Semiconductor Technologies for Modern Telehealth Applications | Oct 26, 2020 |
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The AFE44x0SPO2EVM is intended for evaluating AFE4400 and AFE4490 devices. The family of devices are fully integrated AFE ideally suited for Pulse Oximeter applications and consist of low noise receive channel, the LED transmit section and diagnostics for sensor and LED fault detection. The (...)
The AFE44x0SPO2EVM is intended for evaluating AFE4400 and AFE4490 devices. The family of devices are fully integrated AFE ideally suited for Pulse Oximeter applications and consist of low noise receive channel, the LED transmit section and diagnostics for sensor and LED fault detection. The (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VQFN (RHA) | 40 | Ultra Librarian |
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