Philips Semiconductors
Product specification
8-bit A/D and D/A converter
1
FEATURES
PCF8591
•
Single power supply
•
Operating supply voltage 2.5 V to 6 V
•
Low standby current
•
Serial input/output via I
2
C-bus
•
Address by 3 hardware address pins
•
Sampling rate given by I
2
C-bus speed
•
4 analog inputs programmable as single-ended or
differential inputs
•
Auto-incremented channel selection
•
Analog voltage range from V
SS
to V
DD
•
On-chip track and hold circuit
•
8-bit successive approximation A/D conversion
•
Multiplying DAC with one analog output.
2
APPLICATIONS
3
GENERAL DESCRIPTION
The PCF8591 is a single-chip, single-supply low power
8-bit CMOS data acquisition device with four analog
inputs, one analog output and a serial I
2
C-bus interface.
Three address pins A0, A1 and A2 are used for
programming the hardware address, allowing the use of
up to eight devices connected to the I
2
C-bus without
additional hardware. Address, control and data to and from
the device are transferred serially via the two-line
bidirectional I
2
C-bus.
The functions of the device include analog input
multiplexing, on-chip track and hold function, 8-bit
analog-to-digital conversion and an 8-bit digital-to-analog
conversion. The maximum conversion rate is given by the
maximum speed of the I
2
C-bus.
•
Closed loop control systems
•
Low power converter for remote data acquisition
•
Battery operated equipment
•
Acquisition of analog values in automotive, audio and
TV applications.
4
ORDERING INFORMATION
TYPE
NUMBER
PCF8591P
PCF8591T
PACKAGE
NAME
DIP16
SO16
DESCRIPTION
plastic dual in-line package; 16 leads (300 mil)
plastic small outline package; 16 leads; body width 7.5 mm
VERSION
SOT38-4
SOT162-1
2003 Jan 27
3
PHILIPS [ NXP SEMICONDUCTORS ]
