AA88349 Datasheet, PDF (2/8 Pages) Agamem Microelectronic Inc. – 8-BIT DAC

AA88349 _{Agamem Microelectronics Inc.}
PRELIMINARY
8-BIT DAC
■ BLOCK DIAGRAM
(Clock) CLK
DI
(Serial digital Input)
VCC
(System Power)
Digital Block
12-bit Shift Register
D0 D1 D2 D3 D4 D5 D6 D7
D8 D9 D10 D11
------
-----------------
4
4-bit Address Decoder
1 2 3 4 ---- 6 7 8
8
---------------------
8
8-bit
- - - - - - - - - - - - - - - - - - - - - ^8-bit
Data Latch #8
Data Latch #8
8
8
Analog Block
R-2R
D/A Converter #1
---------------------
R-2R
D/A Converter #8
DO
(Serial digital Ouput)
LD (Strobe)
GND
(System Ground)
OP-B
OP-B
#1 _{- - - - - - - - - - - - - - - - - - - - - - - - -} #8
Analog Output
AO1 ········································
AO3
■ PIN DESCRIPTIONS
PIN NO.
4
8
6
5
PIN NAME PIN FUNCTION
VCC +5V system power supply pin
.
GND System ground pin
Serial clock input pin. At its rising edge, DI data shift into the
CLK _{Shift-Register.}
Data Strobe pin. When it’s on high, upper 4-bit and lower 8-bit of
LD
the 12-bit in the Shift-Register be latched into the Address
Decoder and the Data-Latch, respectively
©Copyright Agamem Microelectronics Inc.
2
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.