Agamem Microelectronics Inc.
PRELIMINARY
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DESCRIPTION
AA88349
8-BIT DAC
The AA88349 is a CMOS processed digital to analog converter (DAC) with 8-bit reso-
lotion, low leakage and operating current. The AA88349 has 3 channels with build in
operational amplifier output buffers which could operate in the full-swing voltage range
from VCC to GND and enhance the Drive/Sink ability up to max. 1mA. Digital data (DI)
input serially in a max. 2.5MHz clock (CLK) rate. The latched 12-bit digital data is
converted into an analog DC voltage in the range from GND to VCC with 8-bit resolution
in one of the 3 channels by the D/A converter in a max. 100μs settling time. AA88349 is a
single 5V power DAC. Analog DC output could be full voltage swing as the analog power
is equal to the system power. In addition to normal D/A converter applications, AA88349 is
also available for electronic volume and instead of potentio- meters for adjustment due to
its high stability on the capacitive load. 8 pins TSSOP package type are available for
AA88349. Its operational temper- nature range is specified over –20℃ to 85℃.
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FEATURES
• 12 bits serial data input (3 wire serial data transfer method, DI, CLK, LD)
• R-2R resistor ladder used for D/A conversion
• 3 channels with 8-bit resolution monotonic D/A converter
• 3 channels buffer operational amplifiers operating in the full voltage range from VCC to
GND
• Max. 2.5 MHz serial digital data input
• Serial I/O for cascade application
• Max. 1.0 mA output drive/sink current
• Single +5 V system power supply
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APPLICATION
DVD, CD-R, CD-RW, DVC, digital camera, and other industrial equipments
©Copyright
Agamem Microelectronics Inc.
1
www.agamem.com.tw
2008/10/31
AGAMEM MICROELECTRONICS INCOPERATION RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER
NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT
ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCTS OR CIRCUIT DESRIBED
HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
AGAMEM [ AGAMEM MICROELECTRONIC INC. ]
