Agamem Microelectronics Inc. AA88349 8-BIT DAC DESCRIPTION The AA88349 is a CMOS processed digital to analog converter (DAC) with 8-bit resolution, 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. 100ȝs setting 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 potentiometers for adjustment due to its high stability on the capacitive load. 8 pins TSSOP package type are available for AA88349. Its operational tempernature 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 BLOCK DIAGRAM ©Copyright Agamem Microelectronics Inc. 1 www.agamem.com.tw 2010/02/04 Ver 2.0 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 DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.