12/05/2023 | Press release | Distributed by Public on 12/05/2023 00:53
The new AS7058 also provides a new means for differentiating wearable products, introducing the capability to perform body impedance measurement, for analysis of body composition.
The AS7058's ultra-low noise characteristics produce a very high optical signal-to-noise ratio of 120dB. This enables substantial improvements, compared to competing products, in PPG measurement performance in the parameters of heart rate, respiration rate, blood oxygen saturation (SpO2), and blood pressure. The outstanding optical noise performance of the AS7058 is the result of developments including the integration of two low-noise, 20-bit analog-to-digital converters (ADCs), the provision of integrated low-noise LED drivers, and the introduction of new automatic ambient light offset correction technology.
The signal-to-noise ratio of the AS7058 also enables wearable device manufacturers to reduce power consumption by driving the device's LEDs at lower current while maintaining high signal integrity.
High integration of optical and electrical measurement functions
The AS7058 incorporates a comprehensive set of capabilities for optical and electrical measurement of vital signs. It includes:
The two PPG ADCs perform simultaneous photodiode data acquisition. Measurements of PPG and ECG signals can also be synchronized to enable measurement of blood pressure.
The rich set of features in the AS7058 is integrated into a compact WLCSP chip which has dimensions of 2.8 mm x 2.5 mm x 0.5 mm.