![]() The device communicates to an external microcontroller or host processor using an SPI™ interface. To ease clocking requirements and provide a low-jitter clock to the device, an oscillator is also integrated that functions from an external crystal. This flexibility enables the user to have complete control of the device timing characteristics. The device is a very configurable timing controller. The device consists of a low-noise receiver channel with a 22-bit analog-to-digital converter (ADC), an LED transmit section, and diagnostics for sensor and LED fault detection. The AFE4490 is a fully-integrated analog front-end (AFE) that is ideally suited for pulse-oximeter applications. Specified Temperature Range: –40☌ to 85☌.Integrated Digital Ambient Estimation and Subtraction.I-V Amplifier with Seven Separate LED2 and LED1 Programmable Feedback R and C Settings.Analog Ambient Cancellation Scheme with Selectable 1-♚ to 10-♚ Ambient Current. ![]()
0 Comments
Leave a Reply. |