| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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20 pcs
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20 pcs | On Request | 1 | On Request | On Request | N/A | On Request | On Request |
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The AFE4490RHAT from Texas Instruments is a fully integrated Analog Front-End (AFE) specifically designed for clinical fingertip pulse oximetry and SpO2 measurements. This component offers a 22-bit resolution and a single input channel, communicating via an SPI interface.
Key electrical features include a dynamic range of 110 dB, programmable LED current ranges from 50 mA to 200 mA with 8-bit resolution, and low power consumption. The receive channel boasts low input-referred noise of 50 pA RMS and 13.5 noise-free bits. It supports flexible pulse sequencing and timing control, with LED on-time programmability from 50 μs to 4 ms.
The device operates within a temperature range of -40°C to 85°C and is housed in a compact 40-VQFN (6 mm x 6 mm) package, suitable for surface mounting. It includes integrated fault diagnostics for photodiode and LED status, as well as cable detection.
This AFE is ideal for applications requiring precise measurement of blood oxygen saturation and pulse rate, offering a robust solution for medical device design.
| Qty | Low | High |
|---|---|---|
| 1+ | $11.80 | $11.80 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The AFE4490RHAT has a resolution of 22 bits.
The AFE4490RHAT uses an SPI interface.
The operating temperature range for the AFE4490RHAT is -40°C to 85°C.
The AFE4490RHAT is available in a 40-VQFN (6x6) package.
The supply voltage for Rx is 2.0 V to 3.6 V, and for Tx is 3.0 V or 5.25 V.