pcf8591 NXP Semiconductors, pcf8591 Datasheet - Page 20

• Manufacturer Part Number: pcf8591
• Description: 8-bit A/d And D/a Converter
• Manufacturer: NXP Semiconductors

Philips Semiconductors
15 APPLICATION INFORMATION
Inputs must be connected to V
In order to prevent excessive ground and supply noise and to minimize cross-talk of the digital to analog signal paths the
user has to design the printed-circuit board layout very carefully. Supply lines common to a PCF8591 device and noisy
digital circuits and ground loops should be avoided. Decoupling capacitors (>10 F) are recommended for power supply
and reference voltage inputs.
2003 Jan 27
handbook, full pagewidth
8-bit A/D and D/A converter
V DD
SS
V 0
V 0
or V
ANALOGUE GROUND
DIGITAL GROUND
DD
V 1
when not in use. Analog inputs may also be connected to AGND or V
V DD
Fig.21 Application diagram.
V DD
AIN0
AIN1
AIN2
AIN3
A0
A1
A2
AIN0
AIN1
AIN2
AIN3
A0
A1
A2
TRANSMITTER
20
PCF8591
PCF8591
MASTER
V DD
V DD
V SS
V DD
V DD
V SS
V DD
AGND
AGND
AOUT
AOUT
V REF
V REF
OSC
OSC
SDA
SDA
EXT
SCL
EXT
SCL
V OUT
V OUT
MBL839
V 2
V DD
I
2
C bus
Product specification
PCF8591
REF
.