AA88349 Datasheet, PDF (1/8 Pages) Agamem Microelectronic Inc. – 8-BIT DAC

AA88349 _{Agamem Microelectronics Inc.}
PRELIMINARY
8-BIT DAC
■ DESCRIPTION
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℃.
■ 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
■ 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
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NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. AGAMEM DOES NOT
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HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.