32KHz Low Power Oscillator

Overview

The OT3913t180 is low power, low frequency, multivibrator oscillator for the TSMC 0.18µ CMOS processes.

Resistorless, bipolarless design results in low area.

No external components are required. After a simple trim process a frequency stability of better than 3% is achieved over voltage and temperature ranges.

Key Features

  • 850nW typical power @32KHz.
  • Available frequencies 10KHz – 100KHz.
  • No external components.
  • 60ppm/°C temperature sensitivity.
  • 0.3%/100mV vdd sensitivity.
  • Base cell area 0.005mm2.
  • ±2.5% frequency error after trim.
  • Simple trim at test.
  • Supplied with full source code.
  • Also available for TSMC 150nm, VIS 150nm, UMC 130nm.

Benefits

  • Wide crystal range.
  • Controllable max crystal current.
  • Low power. Oscillator amplitude based current loop ensures minimum power.
  • Low cost. Silicon proven multi-use license available at $8K.

Block Diagram

32KHz Low Power Oscillator Block Diagram

Applications

  • Power down / sleep mode clock for core logic.
  • Power sensitive mixed signal chip clocking / time delays.

Deliverables

  • GDS layout.
  • Verilog model.
  • LVS netlist.
  • Basic SPICE testbench. Allows for verification of basic function.
  • Integration notes, and integration consulting support.
  • Test implementation notes.

Technical Specifications

Foundry, Node
TSMC 180nm, UMC 130nm, VIS 150nm
Maturity
Silicon proven
Availability
Now
TSMC
In Production: 180nm
Silicon Proven: 180nm , 180nm G , 180nm LP
UMC
In Production: 130nm
Silicon Proven: 130nm
VIS
Pre-Silicon: 150nm
Silicon Proven: 150nm
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Semiconductor IP