UMC 55nm ULP 3.3V Temperature Sensor

The OT6021 is a high accuracy die temperature to digital sensor for the UMC 55nm ULP process. It samples the die temperature from an asynchronous start signal and delivers a 12 bit temperature result in 2ms. It can run with an internal oscillator or with an external 8MHz clock. There is a 6 bit optional trim input. The IP can operate without trimming at a reduced accuracy.

• 2.4 to 3.6V + core voltage operation.
• 12-bit two’s complement output, 0.0625°C/LSB (LM75/TMP102 format).
• Better than ±1°C (3σ) accuracy from -40°C to 125°C after single-point trim.
• 3σ untrimmed accuracy of ±2.3°C.
• 6 bit single point trimming.
• Selectable external 8MHz clock or internally clocked.
• First-order delta-sigma conversion with sinc² decimation over 2048 cycles.
• Trimmed IPTAT output currents can be provided.
• 0.11µA average current at one reading per second.
• Small cell area: 0.04mm².

• Die temperature monitoring and thermal shutdown.
• Power path and charger temperature management.
• Low duty-cycle system temperature sensing.

• Verilog model and test bench.
• CDL netlist for LVS.
• Design review spice files.
• GDS format layout.
• LEF file.
• Timing files.
• Integration notes.
• Production test notes.

Service

• $22K multi-use pricing.
• 6 months support included.
• Available detailed design review.
• 4 Weeks lead time for process ports to similar technologies.