CALIFORNIA MICRO <CAMD>, GRUMMAN <GQ> SET PACT California Micro Devices Corp said it has signed an agreement with Grumman Corp's Tachonics Corp unit to develop and product gallium arsenide seminconductor chips. Under the pact, California Micro Devices will design the chips and Tachonics will manufacture them. Initial products to be developed will be gate arrays with 500 to 2,500 gate complexity and radiation hardening capabilities, the company said.