Ai88347
8-BIT DAC
Feature
♦
12 bits serial data input(3 wire serial data
transfer method, DI, CLK, LD)
♦
R-2R resistor ladder used for D/A conversion
♦
8 channels with 8-bit resolution monotonic D/A
converted
♦
8 channel buffer operational amplifiers operating in
the full voltage range from V
CC
to GND only if
V
DD
=V
CC
and V
SS
=GND
♦Max.
2.5 MHz serial digital data input
♦
Serial I/O for cascade application
♦
Max. 1.0 mA output drive/sink current
♦
Two separate power supply/ground lines for
system and analog power supply
♦
Dual 3.3/5V system power supply
Pin Assignment
(Top View)
Description
The Ai88347 is a CMOS processed digital to analog
converter (DAC) with 8-bit resolution, low leakage
current and low operating current. The Ai88347 has 8
channels with build in operational amplifier output
buffers which could operate in the full-swing voltage
range from V
CC
to GND and enhance the Drive/Sink
ability up to max.1mA.
Digital data (DI) input serially in a max. 2.5 MHz
clock (CLK) rate. The latched 12-bit digital data is
converted into an analog DC voltage in the range from
V
SS
to V
DD
with 8-bit resolution in one of the eight
channels by the D/A converter in a max. 100μs
settling time.
Dual 3.3V/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,
Ai88347 is also available for electronic volume and
instead of potentiometers for adjustment due to its
high stability on the capacitive load. .
16 pins TSSOP package type are available
for Ai88347. Its operational temperature range is
specified over –20℃ to 85℃.
P1/12
April 2008
A1PROS [ A1 PROS CO., LTD. ]
