Wearable devices include traditional portable devices such as watches, and also include various types of sensors on accessories in non-device wearable products, such as clothes and shoes. Most wearable devices currently focus on health monitoring or health monitoring. Mainstream mobile operating systems (such as iOS and Android) also promote health as an important application. Wearable medical electronics is undoubtedly the hot wearer in the future. . “However, in terms of current market applications and technological developments, there is still room for improvement in the rapid and accurate monitoring of relevant vital signs in motion.†From the world's leading supply of high-performance signal processing solutions Mr. Wang Sheng, Marketing Manager, Asia Pacific, ADI, said.
Figure 1: Wang Sheng, Marketing Manager, Asia Pacific, Analog Devices
As a leading supplier of mixed signals for sensors and analogs, ADI will also keep abreast of customer and market trends in the field of wearable devices, and use a dedicated healthcare team to provide a full range of solutions, including system-level software. In addition, Mr. Wang Sheng also said, “The low power consumption, small size and low cost requirements of power management in the wearable devices, such as ADP150 and ADP160, are very good in the wearable market. â€
For the ADP16x family, the ADP160/ADP161/ADP162/ADP163 are ultra-low quiescent current, low dropout linear regulators that operate from 2.2 V to 5.5 V and output currents up to 150 mA. With a dropout voltage of only 195 mV at 150 mA, it not only increases efficiency, but also allows the device to operate over a wide input voltage range.
Figure 2: ADP16X
The ADP16x is designed to operate with 1 μF ± 30% small ceramic input and output capacitors for high performance, space-constrained applications. The ADP160 offers 15 fixed output voltage options from 1.2 V to 4.2 V. The ADP160/ADP161 also includes a switching resistor that automatically discharges the output when the LDO is disabled. The ADP162 does not include an output discharge function, and the rest is identical to the ADP160. The ADP161 and ADP163 can be used as adjustable output voltage regulators in a 5-lead TSOT package. The ADP163 does not include an output discharge function, and the rest is identical to the ADP161. Short circuit and thermal overload protection circuits protect the device from damage under adverse conditions.
Available in 5-pin TSOT and 4-lead, 0.5 mm pitch WLCSP packages, the ADP160 and ADP162 are the smallest footprint solutions for a variety of portable power applications, and can be used in mobile phones, digital cameras and audio equipment, portable and Battery-powered devices, rear DC-DC conditioning, and portable medical devices
Figure 3: ADP160 internal block diagram, fixed output, with output discharge function
Also with regard to the ADP150, it is an ultra-low noise (9 μV), low dropout linear regulator that operates from a 2.2 V to 5.5 V supply with a maximum output current of 150 mA. Driving a 150 mA load with a dropout voltage of only 105 mV, this low dropout feature not only improves efficiency, but also allows the device to operate over a wide input voltage range. The ADP150's novel circuit topology enables ultra-low noise performance without the need for additional noise bypass capacitors, making it ideal for noise-sensitive analog and RF applications. The ADP150 provides ultra-low noise performance without compromising its power supply rejection (PSRR) or line and load transient response performance. It combines ultra-low noise with low static power to maximize battery life in portable applications.
The ADP150 is designed to operate stably with 1 μF ± 30% small ceramic input and output capacitors for high performance, space-constrained applications. It offers 14 fixed output voltage options from 1.8 V to 3.3 V. Short circuit and thermal overload protection circuits protect the device from damage under adverse conditions. Available in 5-lead TSOT and 4-lead, 0.4 mm pitch WLCSP packages, the ADP150 is the industry's smallest footprint solution for a variety of portable power applications. The product can be used in mobile phones, digital cameras and audio equipment, portable and battery powered devices, rear DC-DC regulation, portable medical devices, and RF, PLL, VCO and clock power supplies.
The introduction of the ADP series makes ADI closer to the latest trends in wearable devices in the market, and keeps pace with market changes in product design and production, which have laid the foundation for the popularization of future wearable devices.
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