WM8224 datasheet(9/50 Pages) CIRRUS

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WM8224

Production Data

PD, Rev 4.2, September 2013

GENERAL CHARACTERISTICS

Test Conditions

AVDD = DVDD = 3.3V, AGND = DGND = 0V, TA = 25C

PARAMETER

SYMBOL

TEST

CONDITIONS

MIN

TYP

MAX

UNIT

References

Upper reference voltage

VRT

LOWREFS=0

LOWREFS=1

2.05

1.85

Lower reference voltage

VRB

LOWREFS=0

LOWREFS=1

1.05

1.25

Input return bias voltage

VRX

1.25

Diff. Reference voltage (VRT-

VRB)

VRTB

LOWREFS=0

LOWREFS=1

1.0

0.6

Output resistance VRT, VRB, VRX



VRLC/Reset-Level Clamp (RLC)

RLC switching impedance



VRLC short-circuit current

VRLC output resistance



VRLC Hi-Z leakage current

VRLC = 0 to AVDD

A

RLCDAC resolution

bits

RLCDAC step size

VRLCSTEP

RLCDACRNG=0,

0.173

V/step

VRLCSTEP

RLCDACRNG=1,

LOWREFS=0

0.11

V/step

VRLCSTEP

RLCDACRNG=1,

LOWREFS=1

0.097

V/step

RLCDAC output voltage at

code 0(hex)

VRLCBOT

RLCDACRNG=0,

RLCDAC[3:0]=0000,

0.4

VRLCBOT

RLCDACRNG=1,

RLCDAC[3:0]=0000,

0.4

RLCDAC output voltage at

code F(hex)

VRLCTOP

RLCDACRNG=0,

RLCDAC[3:0]=1111,

3.0

VRLCTOP

RLCDACRNG=1,

RLCDAC[3:0]=1111,

LOWREFS = 0

2.05

VRLCTOP

RLCDACRNG=1,

RLCDAC[3:0]=1111,

LOWREFS = 1

1.85

VRLC DNL

-0.5

+0.5

LSB

VRLC INL

-0.5

+0.5

LSB

Offset DAC, Monotonicity Guaranteed

Resolution

bits

Differential non-linearity

DNL

0.1

0.5

LSB

Integral non-linearity

INL

0.75

LSB

Step size

2.04

mV/step

Output voltage

Code 00(hex)

Code FF(hex)

-250

+250

DIGITAL SPECIFICATIONS

Digital Inputs

High level input voltage

VIH

0.7



DVDD

Low level input voltage

VIL

0.2



DVDD

High level input current

IIH

A

Low level input current

IIL

A

Input capacitance

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