WM8232 datasheet(9/15 Pages) WOLFSON

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WM8232

Product Brief

Product Brief, Rev 3.0, February 2012

GENERAL CHARACTERISTICS

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

1.2

Diff. Reference voltage (VREF1C-

VREF3C)

VREF1C3C

ADCFS=0

ADCFS=1

0.8

1.2

Output resistance VREF1C,

VREF3C, VREF2C



VRLC/Reset-Level Clamp (RLC)

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

VRLCSTEP

VRLC_TOP_SEL=1

0.048

V/step

RLCDAC output voltage at

code 0(hex)

VRLCBOT

VRLC_TOP_SEL=0,

VRLC_VSEL[4:0]=00000

0.2

VRLCBOT

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

VRLCTOP

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

0.1

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



AVDD

Low level input voltage

VIL

0.2



AVDD

High level input current

IIH

A

Low level input current

IIL

A

Input capacitance

WM8232 Datasheet(PDF) 9 Page - Wolfson Microelectronics plc

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