Description
The 5X1503 is a series of small form factor programmable clock
generators intended for low-power, consumer, battery powered
applications, wearable and smart devices.
The device is a 1 PLL + DCO architecture design with one
embedded crystal. The device is OTP programmable, allowing for
up to 3 unique frequency outputs. The 5X1503 has built-in unique
features such as Proactive Power Saving (PPS) and a low power
DCO to support system date/time keeping clock at 32.768kHz.
Dynamic Frequency Control (DFC) supports dynamically changing
between four different PLL frequencies via external requests with
controlled frequency changes, reducing frequency overshoot and
undershoot (ORT). The 5X1503S device can also support a
spread clock for EMI reduction. For a description of terms and
their functions, see Glossary of Features.
An internal OTP memory allows the user to store up to four
independent configurations that can be loaded on power-up
without programming. It can then be reprogrammed again through
the I2
C interface.
The 5X1503 supports three LVCMOS type outputs. Two outputs
have programmable amplitude. A low-power 32.768kHz clock is
supported with only less than 1.5μA current consumption for
system RTC reference clock needs.

Typical Applications
▪ SmartDevice
▪ Handheld
▪ Wearable applications
▪ Portable Consumer applications

Features
▪ Proactive Power Saving (PPS) features save power during the
end device power-down mode
▪ Dynamic Frequency Control (DFC) feature allows programming
up to 4 difference frequencies that switch dynamically
▪ Programmable output clock amplitude (1V, 1.1V, 1.2V and
1.8V) to support low swing clock requirement
▪ Dedicated 32kHz output with 6 clock amplitude options
(5X1503L)
▪ Integrated crystal; no external input source requirement
▪ Configurable through I2C or OTP programming
▪ Spread spectrum clock support (5X1503S)
▪ 1.8V operating supply voltage
▪ 2 × 2 mm 10-VFQFPN package