Overview

Smart rings offer a compelling opportunity for health tracking in a miniaturized format, serving as daily companions and fashion accessories. Equipped with NFC charging, payment, and authentication services, they bring convenience and functionality to the user experience. The Bluetooth® Low Energy SoC facilitates optimized performance, lowest-in-class power consumption, and a reduced BOM, making it ideal for highly integrated devices. Its advanced cryptographic block secures sensitive data before transmission, while the large internal memory logs data when the phone is out of reach.

System Benefits:

  • Shared NFC antenna for battery charging, payment, and authentication applications
  • Buck-boost architecture enables stable power output regardless of the battery charge state
  • Advanced cryptography, BLE 5.x support, and embedded flash memory at the lowest-in-class power consumption

Applications

  • Smart rings
  • Smart bands

Winning Combinations Interactive Diagram

Select a block to discover products for your design

4:3 ratio Sheet.1 Sheet.2 Sheet.3 Sheet.4 US275 US275 US275 Accelerometer & Gyroscope Accelerometer & Gyroscope Accelerometer & Gyroscope Heart Rate Sensor and Pulse Oximeter Heart Rate Sensor and Pulse Oximeter Heart Rate Sensor and Pulse Oximeter Fingerprint Sensor Fingerprint Sensor Fingerprint Sensor Temperature Sensor Temperature Sensor Temperature Sensor Inductor Coreless (Air conductor) Sheet.43 Sheet.44 Sheet.45 Sheet.46 Sheet.47 Sheet.48 Sheet.49 Sheet.50 Sheet.51 Antenna Sheet.54 Sheet.55 Sheet.56 Sheet.57 Sheet.58 Capacitor Non-polarized Sheet.60 Sheet.61 Sheet.62 Sheet.63 Capacitor Non-polarized .64 Sheet.65 Sheet.66 Sheet.67 Sheet.68 Battery Li-ion.158 Sheet.70 Sheet.71 Sheet.72 Sheet.73 Sheet.74 Sheet.75 Sheet.76 Sheet.77 Antenna.81 Sheet.82 Sheet.83 Sheet.84 Sheet.85 Sheet.86 Sheet.87 Sheet.88 Sheet.89 Sheet.90 Sheet.91 Sheet.92 Sheet.93 Inductor Coreless (Air conductor).94 Sheet.95 Sheet.96 Sheet.97 Sheet.98 Sheet.99 Sheet.100 Sheet.101 Sheet.102 Sheet.103 Sheet.104 Sheet.105 1.8V 1.8V 1.8V 3.3V 3.3V 3.3V Sheet.109 Sheet.111 NFC Antenna NFC Antenna NFC Antenna 1.8V 1.8V 1.8V Sheet.114 Li-Ion Rechargeable Battery Li-Ion Rechargeable Battery Li-Ion Rechargeable Battery Sheet.118 Sheet.119 Sheet.120 Sheet.121 Sheet.122 Sheet.124 Sheet.125 Sheet.127 Sheet.133 Sheet.134 Sheet.135 3.3V 3.3V 3.3V L1 L1 L1 3.0V-5.2V 3.0V-5.2V 3.0V-5.2V Sheet.139 Sheet.140 3.3V 3.3V 3.3V Sheet.142 Connector 1.162 Sheet.144 Sheet.145 Sheet.146 Sheet.147 Sheet.148 Sheet.150 Sheet.151 Sheet.152 Sheet.153 Sheet.154 Sheet.155 Sheet.156 1.8V 1.8V 1.8V 3.3V 3.3V 3.3V 3.3V 3.3V 3.3V Sheet.160 Sheet.161 L2 L2 L2 Sheet.163 Sheet.164 32M 32M 32M Sheet.166 Load Switch Load Switch Load Switch NFC WLC NFC WLC Listener NFC WLC Listener NFC WLC Listener VDMCU VDMCU VDMCU VDDC VDDC VDDC RF RF RF GPO GPO GPO VBAT VBAT VBAT I2C I2C I2C Sheet.172 Buck-boost Buck-Boost Buck-Boost Vin Vin Vin Vout Vout Vout NFC Payment/identification Tag NFC Payment/identification Tag NFC Payment/identification Tag Sheet.173 SmartBond ™ Multi-Core Bluetooth ® LE 5.2 SoC with Embedded Flash VBAT VBAT VBAT ISO7816 ISO7816 ISO7816 I2C I2C I2C SPI SPI SPI BLE BLE BLE DCDC DC/DC DC/DC SmartBond ™ Multi-Core Bluetooth ® LE 5.2 SoC with Embedded Flash SmartBond™ Multi-Core Bluetooth® LE 5.2 SoC with Embedded Flash SmartBond™ Multi-CoreBluetooth® LE 5.2 SoC with Embedded Flash

Recommended Products

Buck-Boost
Buck-boost Regulators (Integrated FETs)

Recommended Products

NFC WLC Listener
NFC

Recommended Products

Load Switch
Load Switches

Recommended Products

SmartBond Multi-Core Bluetooth LE 5.2 SoC with Embedded Flash
Bluetooth® Low Energy

Videos & Training

Smart Ring Wireless Charging with NFC: Renesas PTX130W and PTX30W

Join Sudhan Puranik, Technical Support Engineer at Renesas Electronics, as he demonstrates the innovative capabilities of our smart ring demo board. In this video, we highlight the wireless charging application using Renesas PTX130W and PTX30W products. Smart devices are increasingly integral to tracking and monitoring our lives. Our smart ring, equipped with NFC for contactless payments and wireless charging, offers a compact yet powerful solution for health and activity monitoring. The PTX30W provides a complete single-chip solution for the listener side, while the PTX130W ensures maximum power transfer and fast charging with DiRAC® technology, simplifying design and reducing production costs. Discover how Renesas' technology can revolutionize the way you interact with wearable devices. For more information, visit the Smart Ring page.

Video List
Smart Ring Wireless Charging with NFC: Renesas PTX130W and PTX30W

News & Blog Posts

Blog Post Jul 25, 2024