AK9844 Datasheet, PDF (1/17 Pages) Asahi Kasei Microsystems – 4Kbit EEPROM with 4ch 8bit D/A Converter

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