PCF8591 datasheet(3/28 Pages) PHILIPS

3 / 28 page

2003 Jan 27

Philips Semiconductors

Product speciﬁcation

8-bit A/D and D/A converter

PCF8591

FEATURES

• Single power supply

• Operating supply voltage 2.5 V to 6 V

• Low standby current

• Serial input/output via I2C-bus

• Address by 3 hardware address pins

• Sampling rate given by I2C-bus speed

• 4 analog inputs programmable as single-ended or

differential inputs

• Auto-incremented channel selection

• Analog voltage range from VSS to VDD

• On-chip track and hold circuit

• 8-bit successive approximation A/D conversion

• Multiplying DAC with one analog output.

APPLICATIONS

• Closed loop control systems

• Low power converter for remote data acquisition

• Battery operated equipment

• Acquisition of analog values in automotive, audio and

TV applications.

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 I2C-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 I2C-bus without

additional hardware. Address, control and data to and from

the device are transferred serially via the two-line

bidirectional I2C-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 I2C-bus.

ORDERING INFORMATION

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

PCF8591P

DIP16

plastic dual in-line package; 16 leads (300 mil)

SOT38-4

PCF8591T

SO16

plastic small outline package; 16 leads; body width 7.5 mm

SOT162-1

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