GENERAL DESCRIPTION

The AK9844 includes 4 channel, 8-bit D/A converters with on-chip output buffer amps and it is capable to store the input digital data of each D/A converter by on-chip non-volatile CMOS EEPROM. The AK9844 is optimally designed for various circuit adjustments for consumer and industrial equipments and it is ideally suited for replacing mechanical trimmers.

FEATURES

□ EEPROM SECTION

• 4 word x 8-bit organization (Dedicated for DAC data)

• 256 word x 16-bit organization (General purpose memory)

• Serial data interface

• Sequential register read

• Automatic write cycle

• 100K write cycles

• 10 year data retention

□ D/A SECTION

• 4 channels

• Resolution : 8-bits

• Differential Non-Linearity : ±1.0 LSB

• Linearity Error : ±2.0 LSB

• Output Voltage Range : GND ∼ VCC

□ AUTO READ Function

□ Power down mode