Lowest-current temp-compensated, I²C real-time clock; 240 nA

April 22, 2015 // By Graham Prophet
RV-8803-C7 is the first Temperature Compensated RTC optimised for ultra-low power consumption enabling replacement of expensive batteries and super caps with low cost MLCC capacitors for battery backup operation.

Current consumption of 240 nA and operation down to 1.5V increases the operational life of backup supplies and allows for potential use of low cost MLCC capacitors as a short term backup solution. All this while providing accuracy of ±3.0 ppm (±0.26 seconds/day) over a temperature range of -40° to +85°C. In addition to the lowest current and best accuracy of all temperature-compensated RTCs, the RV-8803-C7 also has the smallest ceramic package available with an integrated 32.768 kHz quartz crystal.

The RTC’s accurate timekeeping together with reliability of a power failure backup suits it for a wide range of applications such as metering, embedded modules, data loggers, white goods, automotive, portable/wearable medical equipment and all types of POS systems.

Features include;

Ultra-miniature ceramic SMD package: 3.2 x 1.5 x 0.8 mm

Integrated 32.768 kHz Quartz Crystal

I²C interface

low current consumption of only 240 nA

Very high accuracy from -40° to +85°C

AEC-Q200 qualified

Specification

Value

Unit

Comment

Output frequency

32.768

kHz

 

Frequency tolerance @ 25°C

±20

ppm

 

Accuracy, compensated

±3.0

ppm

-40°C - +85°C

Ageing, 1st year max.

±3

ppm

 

Operating temperature range

-40 to +85

°C

 

Operating voltage range

1.5 - 5.5

Vdd

temperature-compensated

Current consumption

240

nA

Vdd = 3.0V

Package dimensions

3.2 x 1.5 x 0.8

mm

 

Micro Crystal AG: www.microcrystal.com