UMC 55nm ULP Bandgap / Current Reference

Overview

Key Features

• 3σ 4% untrimmed voltage reference accuracy.
• 1% variation over -40ºC to 125ºC after trimming.
• 70dB low frequency PSRR.
• Trimmed, temperature compensated, 10µA reference current outputs with 3% accuracy.
• Trimmed IPTAT output currents can be provided.
• Less than 8µV noise from 0.1Hz to 10KHz.
• 3 bit voltage trimming.
• 4 bit current trimming.
• -40°C to 140°C temperature operation.
• Small cell area: 0.02mm2 in 55nm CMOS.
• <0.1mW typical power dissipation.
• Level shifters for core logic inputs.
• Can be customize for specific requirements.

Block Diagram

Applications

• Works with a 2 port Obsidian PD IP.
• MPU system reference.
• ADC/ DAC reference.
• Sensor reference.

Deliverables

• Trimming algorithms for room temperature and full temperature characterization.
• Verilog model.
• Metal outline.
• Spice netlist for LVS.
• Design review spice files.
• GDS format layout.
• Timing files.
• Integration notes.
• Production test notes.

Technical Specifications