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.
Application:
Supply Monitoring
Reference Setting
Analog Control Loops
Features:
Single Power Supply
Operating Supply Voltage 2.5 V to 6.0 V
Low Standby Current
Serial Input and Output Via I2C-Bus
I2C Address Selection by 3 Hardware Address Pins
Max sampling rate is given by I2C-bus speed
4 Analog inputs Configurable 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.