Datasheet

Page 44 of 161
nRF8001 Product Specification
Revision 1.2
13.3.2 Estimated lifetime for heart rate profile
The heart rate profile typically has the following connection parameters:
• 1 hour per day connected.
• 1 second connection interval when connected.
• Data indicated every second, 4 bytes.
• Peripheral device is a server and indicates data.
• Pipe used: TX-Ack pipe.
• No encryption used.
• Total system sleep clock accuracy ± 300 ppm.
• 220 mAh coin cell battery.
Table 17. Average current consumption and battery lifetime with and without the DC/DC converter
enabled for heart rate profile
DC/DC converter disabled DC/DC converter enabled Unit
Average current
consumption
3.3 2.7 µA
Calculated battery
lifetime
7.5 9 years