PCF8591
8-bit A/D and D/A converter
Rev. 7 27 June 2013 Product data sheet
1. General description
The PCF8591 is a single-chip, single-supply low-power 8-bit CMOS data acquisition
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device with four analog inputs, one analog output and a serial I C-bus interface. Three
address pins A0, A1 and A2 are used for programming the hardware address, allowing
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the use of up to eight devices connected to the I C-bus without additional hardware.
Address, control and data to and from the device are transferred serially via the two-line
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bidirectional I C-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
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maximum conversion rate is given by the maximum speed of the I C-bus.
2. Features and benefits
Single power supply
Operating supply voltage 2.5 V to 6.0 V
Low standby current
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Serial input and output via I C-bus
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I C address selection by 3 hardware address pins
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Max sampling rate given by I C-bus speed
4 analog inputs configurable as single ended or differential inputs
Auto-incremented channel selection
Analog voltage range from V to V
SS DD
On-chip track and hold circuit
8-bit successive approximation A/D conversion
Multiplying DAC with one analog output.
3. Applications
Supply monitoring
Reference setting
Analog control loopsPCF8591
NXP Semiconductors
8-bit A/D and D/A converter
4. Ordering information
Table 1. Ordering information
Type number Package
Name Description Version
PCF8591P DIP16 plastic dual in-line package; 16 leads SOT38-4
(300 mil)
PCF8591T SO16 plastic small outline package; 16 leads; SOT162-1
body width 7.5 mm
4.1 Ordering options
Table 2. Ordering options
Product type number Sales item (12NC) Orderable part IC Delivery form
number revision
PCF8591P 933768130112 PCF8591P,112 1 tube
PCF8591T/2 935276541512 PCF8591T/2,512 1 tube, dry pack
935276541518 PCF8591T/2,518 1 tape and reel, dry pack, 13 inch
5. Marking
Table 3. Marking codes
Type number Marking code
PCF8591P PCF8591P
PCF8591T PCF8591T
PCF8591 All information provided in this document is subject to legal disclaimers. NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 7 27 June 2013 2 of 31