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AK9844

4Kbit EEPROM with 4ch 8bit D/A Converter

Asahi Kasei Microdevices 

ASAHI KASEI

[AK9844]

AK9844

4Kbit EEPROM with 4ch 8bit D/A Converter

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 Õ 8-bit organization (Dedicated for DAC data)

• 256 word Õ 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

• Differential Non-Linearity

• Linearity Error

• Output Voltage Range

: 8-bits

: ‘ 1.0 LSB

: ‘ 2.0 LSB

: GND ∼ VCC

† AUTO READ Function

† Power down mode

DAD02E-00

Block Diagram

-1-

1999/05

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