WM8232 datasheet(9/141 Pages) CIRRUS

9 / 141 page

WM8232

Rev 4.6

Test Conditions

AVDD = LDOVDD = DBVDD = 3.3V, AGND = LDOGND = DBGND= 0V, TA = 25C, MCLK= 35MHz unless otherwise stated.

PARAMETER

SYMBOL

TEST

CONDITIONS

MIN

TYP

MAX

UNIT

References

Upper reference voltage

VREF1C

ADCFS=0

ADCFS=1

2.05

2.25

Lower reference voltage

VREF3C

ADCFS=0

ADCFS=1

1.25

1.05

Input return bias voltage

VREF2C

1.14

1.2

1.26

Diff. Reference voltage

(VREF1C-VREF3C)

VREF1C3C

ADCFS=0

0.72

0.8

0.88

ADCFS=1

1.00

1.2

1.35

Output resistance

VREF1C, VREF3C, VREF2C



VRLC/Reset-Level Clamp (RLC)

VRLC input voltage range

(see Note 2)

VRLC

SF_INP=0

0.11

3.0

SF_INP=1

0.11

1.2

RLC switching impedance



RLC short-circuit current

RLC output resistance



RLC Hi-Z leakage current

VRLC = 0 to AVDD

A

RLCDAC resolution

bits

RLCDAC step size

VRLCSTEP

VRLC_TOP_SEL=0

0.09

V/step

VRLC_TOP_SEL=1

0.048

RLCDAC output voltage at

code 0(hex)

VRLCBOT

VRLC_TOP_SEL=0,

VRLC_VSEL[4:0]=00000

0.2

VRLC_TOP_SEL=1,

VRLC_VSEL[4:0]=00000

0.11

RLCDAC output voltage at

code 1F(hex)

VRLCTOP

VRLC_TOP_SEL=0,

VRLC_VSEL[4:0]=11111

3.0

VRLC_TOP_SEL=1,

VRLC_VSEL[4:0]=11111

1.6

VRLC DNL

0.5

LSB

VRLC INL

0.5

LSB

Offset DAC, Monotonicity Guaranteed

Resolution

bits

Differential non-linearity

DNL

0.5

LSB

Integral non-linearity

INL

0.5

LSB

Step size

2.04

mV/step

Output voltage

Code 00(hex)

-400

-250

-100

Code FF(hex)

+100

+250

+400

DIGITAL SPECIFICATIONS

Digital Inputs

High level input voltage

VIH

0.7



AVDD

Low level input voltage

VIL

0.2



AVDD

High level input current

IIH

A

Low level input current

IIL

A

Input capacitance

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