PCF8591

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.

Features and benefits

• 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 V_SS to V_DD
• 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.

Parametrics/similar products

Similar products
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Block diagrams

Pricing/ordering/availability

Products/packages

The variants in the table below are discontinued. See the table Discontinued information for more information and replacement product(s).

Quality/reliability/chemical content

The variants in the table below are discontinued. See the table Discontinued information for more information and replacement product(s).

Quality and reliability disclaimer

Discontinued information

Design support

Application note

Level shifting techniques in I2C-bus design (v.1.0, 2007-06-20)

P83CE258 for High-End RDS/EON Car Radio System CCR520S V2.5 (v.1.0, 1996-02-01)

High-End RDS/EON Car Radio System CCR520S (V2.6) (v.1.0, 1996-03-15)

Brochure

Create smarter, more efficient white goods; An industry-leading portfolio of cost-effective, power-saving solutions for major home appliances (v.1.0, 2008-06-01)

Leaflet

1-MHz I2C-bus analog-to-digital and digital-to-analog converter; NXP Fast-mode Plus 8-bit A/D and D/A converter PCA9691 (v.1.0, 2006-11-01)

User manual

I2C-bus specification and user manual (v.3.0, 2007-06-26)

I2C Demonstration Board 2005-1 Quick Start Guide (v.1.0, 2006-06-13)

Support Links

IBIS and HSPICE Model

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Disclaimers

• General product disclaimer
• Quality and reliability disclaimer