PCF8591P NXP Semiconductors, PCF8591P Datasheet - Page 6

• Manufacturer Part Number: PCF8591P
• Description: IC, A/D AND D/A CONVERTER, 8BIT, 16-DIP
• Manufacturer: NXP Semiconductors
• Type: General Purposer

Specifications of PCF8591P

• Number Of Channels: 1
• Number Of Adc's: 1
• Number Of Dac's: 1
• Adc/dac Resolution: 8b
• Interface Type: Serial (I2C)
• Operating Supply Voltage (typ): 3.3/5V
• Sample Rate: 11.1KSPS
• Number Of Adc Inputs: 4
• Number Of Dac Outputs: 1
• Operating Supply Voltage (max): 6V
• Operating Supply Voltage (min): 2.5V
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Pin Count: 16
• Mounting: Through Hole
• Supply Voltage Range: 2.5V To 6V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: DIP
• No. Of Pins: 16
• Linearity Error -: 1.5LSB
• Termination Type: DIP
• Supply Voltage Max: 8V
• Input Channels Per Adc: 1
• Rohs Compliant: Yes
• Filter Terminals: DIP
• Conversion Time: 90µs
• Data Interface: I2C, Serial
• Lead Free Status / RoHS Status: Compliant

Philips Semiconductors
7
7.1
Each PCF8591 device in an I
sending a valid address to the device. The address
consists of a fixed part and a programmable part.
The programmable part must be set according to the
address pins A0, A1 and A2. The address always has to
be sent as the first byte after the start condition in the
I
read/write-bit which sets the direction of the following data
transfer (see Figs 3, 15 and 16).
1998 Jul 02
2
C-bus protocol. The last bit of the address byte is the
8-bit A/D and D/A converter
FUNCTIONAL DESCRIPTION
Addressing
Fig.3 Address byte.
2
C-bus system is activated by
6
7.2
The second byte sent to a PCF8591 device will be stored
in its control register and is required to control the device
function.
The upper nibble of the control register is used for enabling
the analog output, and for programming the analog inputs
as single-ended or differential inputs. The lower nibble
selects one of the analog input channels defined by the
upper nibble (see Fig.4). If the auto-increment flag is set
the channel number is incremented automatically after
each A/D conversion.
If the auto-increment mode is desired in applications
where the internal oscillator is used, the analog output
enable flag in the control byte (bit 6) should be set. This
allows the internal oscillator to run continuously, thereby
preventing conversion errors resulting from oscillator
start-up delay. The analog output enable flag may be reset
at other times to reduce quiescent power consumption.
The selection of a non-existing input channel results in the
highest available channel number being allocated.
Therefore, if the auto-increment flag is set, the next
selected channel will be always channel 0. The most
significant bits of both nibbles are reserved for future
functions and have to be set to 0. After a Power-on reset
condition all bits of the control register are reset to 0.
The D/A converter and the oscillator are disabled for power
saving. The analog output is switched to a high-impedance
state.
Control byte
Product specification
PCF8591