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.
●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.
