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