PCF8591 datasheet(18/28 Pages) PHILIPS

18 / 28 page

1998 Jul 02

Philips Semiconductors

Product speciﬁcation

8-bit A/D and D/A converter

PCF8591

12 D/A CHARACTERISTICS

VDD = 5.0 V; VSS =0V; VREF = 5.0 V; VAGND =0V; RL =10kΩ; CL = 100 pF; Tamb = −40 °C to +85 °C unless otherwise

speciﬁed.

13 A/D CHARACTERISTICS

VDD = 5.0 V; VSS =0V; VREF = 5.0 V; VAGND =0V; RS =10kΩ; Tamb = −40 °C to +85 °C unless otherwise speciﬁed.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Analog output

VOA

output voltage

no resistive load

VSS

−

VDD

RL =10kΩ

VSS

−

0.9

× VDD V

ILO

output leakage current

AOUT disabled

−−

250

Accuracy

OSe

offset error

Tamb =25 °C

−−

linearity error

−−±1.5

LSB

gain error

no resistive load

−−

tDAC

settling time

to 1

⁄2 LSB full scale step

−−

µs

fDAC

conversion rate

−−

11.1

kHz

SNRR

supply noise rejection ratio

f = 100 Hz;

VDDN = 0.1 × VPP

−

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

Analog inputs

VIA

analog input voltage

VSS

−

VDD

ILIA

analog input leakage current

−−

100

CIA

analog input capacitance

−

CID

differential input capacitance

−

VIS

single-ended voltage

measuring range

VAGND

−

VREF

VID

differential voltage

measuring range;

VFS =VREF − VAGND

−

Accuracy

OSe

offset error

Tamb =25 °C

−−

linearity error

−−±1.5

LSB

gain error

−−

GSe

small-signal gain error

∆V

i = 16 LSB

−−

CMRR

common-mode rejection

ratio

−

SNRR

supply noise rejection ratio

f = 100 Hz;

VDDN = 0.1 × VPP

−

tADC

conversion time

−−

µs

fADC

sampling/conversion rate

−−

11.1

kHz

–

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