Precision temp sensor targets DDR5 memory modules

By Gina Roos, editor-in-chief

Renesas Electronics Corp. has launched a JEDEC-compliant precision temperature sensor, targeting DDR5 memory modules. The TS5111  can also be used in a variety of other applications, including solid-state disks (SSDs), computing motherboards, and communications equipment that require accurate, real-time temperature monitoring.

Aimed at helping memory modules and other temperature-sensitive systems to run at peak efficiency and reliability with real-time, closed-loop thermal management algorithms, the TS5111 with programmable warning flags enables systems to leverage thermal control loop mechanisms such as memory refresh rates, fan speeds, and bandwidth throttling.

The TS5111 provides a typical temperature accuracy of 0.5°C from 75°C to 95°C, 1.0°C from 40°C to 125°C, and 2.0°C from –40°C to 125°C. Other key specs include a transfer rate of up to 12.5 MHz and 1.8-V and (optional) 1.1-V power supply inputs.

The TS5111 temperature sensor’s small size, measuring 0.8 × 1.3 mm, makes it well-suited for small-form-factor systems. It supports I²C, SMBUS, and the new I3C Basic protocol for data rates up to 12.5 MHz, as well as advanced features like in-band interrupts, parity check, and packet error checks. It complies with the JEDEC JESD302-1 serial bus thermal sensor device specification.

The TS5111 joins a complete family of DDR5 solutions  that includes the 5RCD0148HC1 registered clock driver, P8900 power management IC, and SPD5118  SPD Hub.

The TS5111-Z1AHRI8 temperature sensor is available now in a six-ball WLCSP package and is sampling to qualified customers.